From 0d90cbb9d04d465e925ccc49d820f2210a8e80dd Mon Sep 17 00:00:00 2001 From: Mackinnon Buck Date: Fri, 17 Jul 2020 18:56:44 -0700 Subject: [PATCH 01/21] Basic virtualization prototype. --- AspNetCore.sln | 8 ++ .../src/Virtualization/VirtualizeBase.cs | 93 +++++++++++++++++++ src/Components/Web.JS/src/GlobalExports.ts | 2 + src/Components/Web.JS/src/Virtualize.ts | 54 +++++++++++ .../Web/src/Virtualization/Virtualize.cs | 40 ++++++++ .../test/testassets/BasicTestApp/Index.razor | 1 + .../VirtualizationComponent.razor | 19 ++++ 7 files changed, 217 insertions(+) create mode 100644 src/Components/Components/src/Virtualization/VirtualizeBase.cs create mode 100644 src/Components/Web.JS/src/Virtualize.ts create mode 100644 src/Components/Web/src/Virtualization/Virtualize.cs create mode 100644 src/Components/test/testassets/BasicTestApp/VirtualizationComponent.razor diff --git a/AspNetCore.sln b/AspNetCore.sln index 50068277d886..3db9d70b808e 100644 --- a/AspNetCore.sln +++ b/AspNetCore.sln @@ -1430,12 +1430,20 @@ EndProject Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "Sdk", "Sdk", "{FED4267E-E5E4-49C5-98DB-8B3F203596EE}" EndProject Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Microsoft.NET.Sdk.BlazorWebAssembly", "src\Components\WebAssembly\Sdk\src\Microsoft.NET.Sdk.BlazorWebAssembly.csproj", "{6B2734BF-C61D-4889-ABBF-456A4075D59B}" +Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "BasicTestApp", "src\Components\test\testassets\BasicTestApp\BasicTestApp.csproj", "{46FB7E93-1294-4068-B80A-D4864F78277A}" EndProject Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Microsoft.NET.Sdk.BlazorWebAssembly.Tests", "src\Components\WebAssembly\Sdk\test\Microsoft.NET.Sdk.BlazorWebAssembly.Tests.csproj", "{83371889-9A3E-4D16-AE77-EB4F83BC6374}" EndProject Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Microsoft.NET.Sdk.BlazorWebAssembly.IntegrationTests", "src\Components\WebAssembly\Sdk\integrationtests\Microsoft.NET.Sdk.BlazorWebAssembly.IntegrationTests.csproj", "{525EBCB4-A870-470B-BC90-845306C337D1}" EndProject Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Microsoft.NET.Sdk.BlazorWebAssembly.Tools", "src\Components\WebAssembly\Sdk\tools\Microsoft.NET.Sdk.BlazorWebAssembly.Tools.csproj", "{175E5CD8-92D4-46BB-882E-3A930D3302D4}" +Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "ComponentsApp.Server", "src\Components\test\testassets\ComponentsApp.Server\ComponentsApp.Server.csproj", "{19974360-4A63-425A-94DB-C2C940A3A97A}" +EndProject +Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "LazyTestContentPackage", "src\Components\test\testassets\LazyTestContentPackage\LazyTestContentPackage.csproj", "{ADF9C126-F322-4E34-AFD3-E626A4487206}" +EndProject +Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "TestContentPackage", "src\Components\test\testassets\TestContentPackage\TestContentPackage.csproj", "{3D3C7D9B-E356-4DC6-80B1-3F6D7F15EE31}" +EndProject +Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Components.TestServer", "src\Components\test\testassets\TestServer\Components.TestServer.csproj", "{8A59AF88-4A82-46ED-977D-D909001F8107}" EndProject Global GlobalSection(SolutionConfigurationPlatforms) = preSolution diff --git a/src/Components/Components/src/Virtualization/VirtualizeBase.cs b/src/Components/Components/src/Virtualization/VirtualizeBase.cs new file mode 100644 index 000000000000..1d92cb249d5e --- /dev/null +++ b/src/Components/Components/src/Virtualization/VirtualizeBase.cs @@ -0,0 +1,93 @@ +using System; +using System.Collections.Generic; +using System.Linq; +using Microsoft.AspNetCore.Components.Rendering; + +namespace Microsoft.AspNetCore.Components.Virtualization +{ + public abstract class VirtualizeBase : ComponentBase + { + private int _itemsAbove; + + private int _itemsVisible; + + private int _itemsBelow; + + protected ElementReference TopSpacer { get; private set; } + + protected ElementReference BottomSpacer { get; private set; } + + [Parameter] + public ICollection Items { get; set; } = default!; + + [Parameter] + public float ItemSize { get; set; } + + [Parameter] + public RenderFragment? ChildContent { get; set; } + + protected override void OnParametersSet() + { + if (Items == null) + { + throw new InvalidOperationException( + $"Parameter '{nameof(Items)}' must be specified and non-null."); + } + + if (ItemSize <= 0f) + { + throw new InvalidOperationException( + $"Parameter '{nameof(ItemSize)}' must be specified and greater than zero."); + } + + _itemsBelow = Items.Count; + } + + protected void UpdateTopSpacer(float spacerSize, float containerSize) + => CalculateSpacerItemDistribution(spacerSize, containerSize, out _itemsAbove, out _itemsBelow); + + protected void UpdateBottomSpacer(float spacerSize, float containerSize) + => CalculateSpacerItemDistribution(spacerSize, containerSize, out _itemsBelow, out _itemsAbove); + + private void CalculateSpacerItemDistribution(float spacerSize, float containerSize, out int itemsInThisSpacer, out int itemsInOtherSpacer) + { + _itemsVisible = (int)(containerSize / ItemSize) + 1; // TODO: Custom number of "padding" elements? + itemsInThisSpacer = (int)(spacerSize / ItemSize); + itemsInOtherSpacer = Items.Count - itemsInThisSpacer - _itemsVisible; + + StateHasChanged(); + } + + private string GetSpacerStyle(int itemsInSpacer) + { + return $"height: {itemsInSpacer * ItemSize}px;"; + } + + protected override void BuildRenderTree(RenderTreeBuilder builder) + { + builder.OpenElement(0, "div"); + builder.AddAttribute(1, "key", "top-spacer"); + builder.AddAttribute(2, "style", GetSpacerStyle(_itemsAbove)); + builder.AddElementReferenceCapture(3, elementReference => TopSpacer = elementReference); + builder.CloseElement(); + + if (ChildContent != null) + { + builder.AddContent(4, new RenderFragment(builder => + { + foreach (var item in Items.Skip(_itemsAbove).Take(_itemsVisible)) + { + ChildContent(item)?.Invoke(builder); + } + })); + } + + builder.OpenElement(5, "div"); + builder.AddAttribute(6, "key", "bottom-spacer"); + builder.AddAttribute(7, "style", GetSpacerStyle(_itemsBelow)); + builder.AddElementReferenceCapture(8, elementReference => + BottomSpacer = elementReference); + builder.CloseElement(); + } + } +} diff --git a/src/Components/Web.JS/src/GlobalExports.ts b/src/Components/Web.JS/src/GlobalExports.ts index 08f7557ba510..d09db420ae19 100644 --- a/src/Components/Web.JS/src/GlobalExports.ts +++ b/src/Components/Web.JS/src/GlobalExports.ts @@ -2,6 +2,7 @@ import { navigateTo, internalFunctions as navigationManagerInternalFunctions } f import { attachRootComponentToElement } from './Rendering/Renderer'; import { domFunctions } from './DomWrapper'; import { setProfilingEnabled } from './Platform/Profiling'; +import { Virtualize } from './Virtualize'; // Make the following APIs available in global scope for invocation from JS window['Blazor'] = { @@ -12,5 +13,6 @@ window['Blazor'] = { navigationManager: navigationManagerInternalFunctions, domWrapper: domFunctions, setProfilingEnabled: setProfilingEnabled, + Virtualize, }, }; diff --git a/src/Components/Web.JS/src/Virtualize.ts b/src/Components/Web.JS/src/Virtualize.ts new file mode 100644 index 000000000000..b4d11a771fd7 --- /dev/null +++ b/src/Components/Web.JS/src/Virtualize.ts @@ -0,0 +1,54 @@ +function findClosestScrollContainer(element: Element | null): Element | null { + if (!element) { + return null; + } + + const style = getComputedStyle(element); + + if (style.overflowY !== 'visible') { + return element; + } + + return findClosestScrollContainer(element.parentElement); +} + +function init(component: any, topSpacer: Element, bottomSpacer: Element, rootMargin = 50): void { + const intersectionObserver = new IntersectionObserver(intersectionCallback, { + root: findClosestScrollContainer(topSpacer), + rootMargin: `${rootMargin}px`, + }); + + intersectionObserver.observe(topSpacer); + intersectionObserver.observe(bottomSpacer); + + const mutationObserver = new MutationObserver((): void => { + intersectionObserver.unobserve(topSpacer); + intersectionObserver.unobserve(bottomSpacer); + intersectionObserver.observe(topSpacer); + intersectionObserver.observe(bottomSpacer); + }); + + mutationObserver.observe(topSpacer, { attributes: true }); + + function intersectionCallback(entries: IntersectionObserverEntry[]): void { + entries.forEach((entry): void => { + if (!entry.isIntersecting) { + return; + } + + const containerSize = entry.rootBounds?.height; + + if (entry.target === topSpacer) { + component.invokeMethodAsync('OnTopSpacerVisible', entry.intersectionRect.top - entry.boundingClientRect.top, containerSize); + } else if (entry.target === bottomSpacer) { + component.invokeMethodAsync('OnBottomSpacerVisible', entry.boundingClientRect.bottom - entry.intersectionRect.bottom, containerSize); + } else { + throw new Error('Unknown intersection target'); + } + }); + } +} + +export const Virtualize = { + init, +}; diff --git a/src/Components/Web/src/Virtualization/Virtualize.cs b/src/Components/Web/src/Virtualization/Virtualize.cs new file mode 100644 index 000000000000..04da2d8e7124 --- /dev/null +++ b/src/Components/Web/src/Virtualization/Virtualize.cs @@ -0,0 +1,40 @@ +using System; +using System.Threading.Tasks; +using Microsoft.JSInterop; + +namespace Microsoft.AspNetCore.Components.Virtualization +{ + public class Virtualize : VirtualizeBase, IDisposable + { + private DotNetObjectReference>? _selfReference; + + [Inject] + private IJSRuntime JSRuntime { get; set; } = default!; + + protected override async Task OnAfterRenderAsync(bool firstRender) + { + if (firstRender) + { + _selfReference = DotNetObjectReference.Create(this); + await JSRuntime.InvokeVoidAsync("Blazor._internal.Virtualize.init", _selfReference, TopSpacer, BottomSpacer); + } + } + + [JSInvokable] + public void OnTopSpacerVisible(float spacerSize, float containerSize) + { + UpdateTopSpacer(spacerSize, containerSize); + } + + [JSInvokable] + public void OnBottomSpacerVisible(float spacerSize, float containerSize) + { + UpdateBottomSpacer(spacerSize, containerSize); + } + + public void Dispose() + { + _selfReference?.Dispose(); + } + } +} diff --git a/src/Components/test/testassets/BasicTestApp/Index.razor b/src/Components/test/testassets/BasicTestApp/Index.razor index aa87700d5b8e..c9e0ccb25096 100644 --- a/src/Components/test/testassets/BasicTestApp/Index.razor +++ b/src/Components/test/testassets/BasicTestApp/Index.razor @@ -81,6 +81,7 @@ + diff --git a/src/Components/test/testassets/BasicTestApp/VirtualizationComponent.razor b/src/Components/test/testassets/BasicTestApp/VirtualizationComponent.razor new file mode 100644 index 000000000000..dcf483dc15d4 --- /dev/null +++ b/src/Components/test/testassets/BasicTestApp/VirtualizationComponent.razor @@ -0,0 +1,19 @@ +@using Microsoft.AspNetCore.Components.Virtualization + + + +
+ +
Item @context
+ + +
Item @context
+ +
+ + +@code { + int itemSize = 100; + Random rng = new Random(); + ICollection Items = Enumerable.Range(1, 1000).ToList(); +} From 8d16b794213998c4022ad868ccca27e9ed6f48c7 Mon Sep 17 00:00:00 2001 From: Mackinnon Buck Date: Mon, 20 Jul 2020 20:34:47 -0700 Subject: [PATCH 02/21] Started on asynchronous data fetching --- .../src/Virtualization/VirtualizeBase.cs | 107 ++++++++++++++---- src/Components/Web.JS/src/Virtualize.ts | 21 ++++ .../Web/src/Virtualization/Virtualize.cs | 5 +- .../VirtualizationComponent.razor | 40 ++++++- 4 files changed, 148 insertions(+), 25 deletions(-) diff --git a/src/Components/Components/src/Virtualization/VirtualizeBase.cs b/src/Components/Components/src/Virtualization/VirtualizeBase.cs index 1d92cb249d5e..09053366a639 100644 --- a/src/Components/Components/src/Virtualization/VirtualizeBase.cs +++ b/src/Components/Components/src/Virtualization/VirtualizeBase.cs @@ -1,18 +1,29 @@ using System; +using System.Collections.Concurrent; using System.Collections.Generic; using System.Linq; +using System.Threading; +using System.Threading.Tasks; using Microsoft.AspNetCore.Components.Rendering; namespace Microsoft.AspNetCore.Components.Virtualization { public abstract class VirtualizeBase : ComponentBase { + private readonly ConcurrentQueue _loadedItems = new ConcurrentQueue(); + + private readonly SemaphoreSlim _fetchSemaphore = new SemaphoreSlim(1); + private int _itemsAbove; private int _itemsVisible; private int _itemsBelow; + private IEnumerable LoadedItems => Items ?? (IEnumerable)_loadedItems; + + private int ItemCount => Items?.Count ?? _loadedItems.Count; + protected ElementReference TopSpacer { get; private set; } protected ElementReference BottomSpacer { get; private set; } @@ -20,40 +31,70 @@ public abstract class VirtualizeBase : ComponentBase [Parameter] public ICollection Items { get; set; } = default!; + [Parameter] + public Func>> ItemsProvider { get; set; } = default!; + [Parameter] public float ItemSize { get; set; } + [Parameter] + public int InitialItemsCount { get; set; } + [Parameter] public RenderFragment? ChildContent { get; set; } protected override void OnParametersSet() { - if (Items == null) + if (ItemSize <= 0f) { throw new InvalidOperationException( - $"Parameter '{nameof(Items)}' must be specified and non-null."); + $"Parameter '{nameof(ItemSize)}' must be specified and greater than zero."); } - if (ItemSize <= 0f) + if (Items != null) + { + if (ItemsProvider != null) + { + throw new InvalidOperationException( + $"{GetType()} cannot have both '{nameof(Items)}' and '{nameof(ItemsProvider)}' parameters."); + } + + _itemsBelow = Items.Count; + } + else if (ItemsProvider != null) + { + _itemsBelow = 0; + } + else { throw new InvalidOperationException( - $"Parameter '{nameof(ItemSize)}' must be specified and greater than zero."); + $"{GetType()} requires either the '{nameof(Items)}' or '{nameof(ItemsProvider)}' parameter to " + + $"be specified and non-null."); } - - _itemsBelow = Items.Count; } protected void UpdateTopSpacer(float spacerSize, float containerSize) - => CalculateSpacerItemDistribution(spacerSize, containerSize, out _itemsAbove, out _itemsBelow); + { + CalculateSpacerItemDistribution(spacerSize, containerSize, out _itemsAbove, out _itemsBelow); + Console.WriteLine($"Above: {_itemsAbove}, Visible: {_itemsVisible}"); + } protected void UpdateBottomSpacer(float spacerSize, float containerSize) - => CalculateSpacerItemDistribution(spacerSize, containerSize, out _itemsBelow, out _itemsAbove); + { + CalculateSpacerItemDistribution(spacerSize, containerSize, out _itemsBelow, out _itemsAbove); + Console.WriteLine($"Above: {_itemsAbove}, Visible: {_itemsVisible}"); + + if (ItemsProvider != null && _itemsAbove + _itemsVisible >= _loadedItems.Count) + { + FetchItems(_itemsAbove + _itemsVisible + InitialItemsCount); + } + } private void CalculateSpacerItemDistribution(float spacerSize, float containerSize, out int itemsInThisSpacer, out int itemsInOtherSpacer) { - _itemsVisible = (int)(containerSize / ItemSize) + 1; // TODO: Custom number of "padding" elements? - itemsInThisSpacer = (int)(spacerSize / ItemSize); - itemsInOtherSpacer = Items.Count - itemsInThisSpacer - _itemsVisible; + _itemsVisible = Math.Max(0, (int)Math.Ceiling(containerSize / ItemSize) + 2); + itemsInThisSpacer = Math.Max(0, (int)Math.Floor(spacerSize / ItemSize) - 1); + itemsInOtherSpacer = Math.Max(0, ItemCount - itemsInThisSpacer - _itemsVisible); StateHasChanged(); } @@ -63,30 +104,58 @@ private string GetSpacerStyle(int itemsInSpacer) return $"height: {itemsInSpacer * ItemSize}px;"; } + private void FetchItems(int newItemCount) + { + var currentScheduler = TaskScheduler.FromCurrentSynchronizationContext(); + + _fetchSemaphore.WaitAsync().ContinueWith(t => + { + if (_loadedItems.Count >= newItemCount) + { + _fetchSemaphore.Release(); + return; + } + + ItemsProvider(_loadedItems.Count..newItemCount).ContinueWith(t => + { + foreach (var item in t.Result) + { + _loadedItems.Enqueue(item); + } + + StateHasChanged(); + + _fetchSemaphore.Release(); + }, currentScheduler); + }); + } + protected override void BuildRenderTree(RenderTreeBuilder builder) { + _itemsBelow = Math.Max(1, ItemCount - (_itemsVisible + _itemsAbove)); + builder.OpenElement(0, "div"); builder.AddAttribute(1, "key", "top-spacer"); builder.AddAttribute(2, "style", GetSpacerStyle(_itemsAbove)); builder.AddElementReferenceCapture(3, elementReference => TopSpacer = elementReference); builder.CloseElement(); + builder.OpenRegion(4); + if (ChildContent != null) { - builder.AddContent(4, new RenderFragment(builder => + foreach (var item in LoadedItems.Skip(_itemsAbove).Take(_itemsVisible)) { - foreach (var item in Items.Skip(_itemsAbove).Take(_itemsVisible)) - { - ChildContent(item)?.Invoke(builder); - } - })); + ChildContent(item)?.Invoke(builder); + } } + builder.CloseRegion(); + builder.OpenElement(5, "div"); builder.AddAttribute(6, "key", "bottom-spacer"); builder.AddAttribute(7, "style", GetSpacerStyle(_itemsBelow)); - builder.AddElementReferenceCapture(8, elementReference => - BottomSpacer = elementReference); + builder.AddElementReferenceCapture(8, elementReference => BottomSpacer = elementReference); builder.CloseElement(); } } diff --git a/src/Components/Web.JS/src/Virtualize.ts b/src/Components/Web.JS/src/Virtualize.ts index b4d11a771fd7..1a8863e8ed0e 100644 --- a/src/Components/Web.JS/src/Virtualize.ts +++ b/src/Components/Web.JS/src/Virtualize.ts @@ -1,3 +1,5 @@ +const observersByDotNetId = {}; + function findClosestScrollContainer(element: Element | null): Element | null { if (!element) { return null; @@ -30,6 +32,11 @@ function init(component: any, topSpacer: Element, bottomSpacer: Element, rootMar mutationObserver.observe(topSpacer, { attributes: true }); + observersByDotNetId[component._id] = { + intersection: intersectionObserver, + mutation: mutationObserver, + }; + function intersectionCallback(entries: IntersectionObserverEntry[]): void { entries.forEach((entry): void => { if (!entry.isIntersecting) { @@ -49,6 +56,20 @@ function init(component: any, topSpacer: Element, bottomSpacer: Element, rootMar } } +function dispose(component: any): void { + const observers = observersByDotNetId[component._id]; + + if (observers) { + observers.intersection.disconnect(); + observers.mutation.disconnect(); + + component.dispose(); + + delete observersByDotNetId[component.id]; + } +} + export const Virtualize = { init, + dispose, }; diff --git a/src/Components/Web/src/Virtualization/Virtualize.cs b/src/Components/Web/src/Virtualization/Virtualize.cs index 04da2d8e7124..00080565323e 100644 --- a/src/Components/Web/src/Virtualization/Virtualize.cs +++ b/src/Components/Web/src/Virtualization/Virtualize.cs @@ -34,7 +34,10 @@ public void OnBottomSpacerVisible(float spacerSize, float containerSize) public void Dispose() { - _selfReference?.Dispose(); + if (_selfReference != null) + { + _ = JSRuntime.InvokeVoidAsync("Blazor._internal.Virtualize.dispose", _selfReference); + } } } } diff --git a/src/Components/test/testassets/BasicTestApp/VirtualizationComponent.razor b/src/Components/test/testassets/BasicTestApp/VirtualizationComponent.razor index dcf483dc15d4..2534a4c673b0 100644 --- a/src/Components/test/testassets/BasicTestApp/VirtualizationComponent.razor +++ b/src/Components/test/testassets/BasicTestApp/VirtualizationComponent.razor @@ -1,19 +1,49 @@ @using Microsoft.AspNetCore.Components.Virtualization - +

+ Item size:
+ +

-
+

+ Scrollable div:
+

+ +
Item @context
+ + +
Item @context
+ +
+

+ +

+ Async items:
+

+ +
Item @context
+ +
+

+ +

+ Viewport as root:

Item @context
Item @context
 -
- +

@code { - int itemSize = 100; + float itemSize = 100; Random rng = new Random(); ICollection Items = Enumerable.Range(1, 1000).ToList(); + + Task> GetItems(Range range) + { + return Task.Delay(500).ContinueWith>(_ => + Enumerable.Range(range.Start.Value, range.End.Value - range.Start.Value)); + } } From 202bf618bcba3bd2eca8cbd590a3e12defc6cb8a Mon Sep 17 00:00:00 2001 From: Mackinnon Buck Date: Tue, 21 Jul 2020 15:58:40 -0700 Subject: [PATCH 03/21] Restructured + infinite scroll --- ...rosoft.AspNetCore.Components.netcoreapp.cs | 646 ++++++++++++++++++ .../Virtualization/IVirtualizationHelper.cs | 32 + .../Virtualization/IVirtualizationService.cs | 17 + .../src/Virtualization/InfiniteScroll.cs | 84 +++ .../src/Virtualization/SpacerEventArgs.cs | 34 + .../src/Virtualization/Virtualize.cs | 36 + .../src/Virtualization/VirtualizeBase.cs | 182 +++-- .../ComponentServiceCollectionExtensions.cs | 2 + src/Components/Web.JS/src/Virtualize.ts | 29 +- ...ft.AspNetCore.Components.Web.netcoreapp.cs | 498 ++++++++++++++ .../Web/src/Virtualization/Virtualize.cs | 43 -- .../Virtualization/WebVirtualizationHelper.cs | 71 ++ .../WebVirtualizationService.cs | 28 + .../src/Hosting/WebAssemblyHostBuilder.cs | 2 + .../VirtualizationComponent.razor | 15 +- 15 files changed, 1553 insertions(+), 166 deletions(-) create mode 100644 src/Components/Components/ref/Microsoft.AspNetCore.Components.netcoreapp.cs create mode 100644 src/Components/Components/src/Virtualization/IVirtualizationHelper.cs create mode 100644 src/Components/Components/src/Virtualization/IVirtualizationService.cs create mode 100644 src/Components/Components/src/Virtualization/InfiniteScroll.cs create mode 100644 src/Components/Components/src/Virtualization/SpacerEventArgs.cs create mode 100644 src/Components/Components/src/Virtualization/Virtualize.cs create mode 100644 src/Components/Web/ref/Microsoft.AspNetCore.Components.Web.netcoreapp.cs delete mode 100644 src/Components/Web/src/Virtualization/Virtualize.cs create mode 100644 src/Components/Web/src/Virtualization/WebVirtualizationHelper.cs create mode 100644 src/Components/Web/src/Virtualization/WebVirtualizationService.cs diff --git a/src/Components/Components/ref/Microsoft.AspNetCore.Components.netcoreapp.cs b/src/Components/Components/ref/Microsoft.AspNetCore.Components.netcoreapp.cs new file mode 100644 index 000000000000..eacc22699a97 --- /dev/null +++ b/src/Components/Components/ref/Microsoft.AspNetCore.Components.netcoreapp.cs @@ -0,0 +1,646 @@ +// Copyright (c) .NET Foundation. All rights reserved. +// Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information. + +namespace Microsoft.AspNetCore.Components +{ + public static partial class BindConverter + { + public static bool FormatValue(bool value, System.Globalization.CultureInfo? culture = null) { throw null; } + public static string FormatValue(System.DateTime value, System.Globalization.CultureInfo? culture = null) { throw null; } + public static string FormatValue(System.DateTime value, string format, System.Globalization.CultureInfo? culture = null) { throw null; } + public static string FormatValue(System.DateTimeOffset value, System.Globalization.CultureInfo? culture = null) { throw null; } + public static string FormatValue(System.DateTimeOffset value, string format, System.Globalization.CultureInfo? culture = null) { throw null; } + public static string FormatValue(decimal value, System.Globalization.CultureInfo? culture = null) { throw null; } + public static string? FormatValue(double value, System.Globalization.CultureInfo? culture = null) { throw null; } + public static string FormatValue(short value, System.Globalization.CultureInfo? culture = null) { throw null; } + public static string? FormatValue(int value, System.Globalization.CultureInfo? culture = null) { throw null; } + public static string FormatValue(long value, System.Globalization.CultureInfo? culture = null) { throw null; } + public static bool? FormatValue(bool? value, System.Globalization.CultureInfo? culture = null) { throw null; } + public static string? FormatValue(System.DateTimeOffset? value, System.Globalization.CultureInfo? culture = null) { throw null; } + public static string? FormatValue(System.DateTimeOffset? value, string format, System.Globalization.CultureInfo? culture = null) { throw null; } + public static string? FormatValue(System.DateTime? value, System.Globalization.CultureInfo? culture = null) { throw null; } + public static string? FormatValue(System.DateTime? value, string? format, System.Globalization.CultureInfo? culture = null) { throw null; } + public static string? FormatValue(decimal? value, System.Globalization.CultureInfo? culture = null) { throw null; } + public static string? FormatValue(double? value, System.Globalization.CultureInfo? culture = null) { throw null; } + public static string? FormatValue(short? value, System.Globalization.CultureInfo? culture = null) { throw null; } + public static string? FormatValue(int? value, System.Globalization.CultureInfo? culture = null) { throw null; } + public static string? FormatValue(long? value, System.Globalization.CultureInfo? culture = null) { throw null; } + public static string? FormatValue(float? value, System.Globalization.CultureInfo? culture = null) { throw null; } + public static string FormatValue(float value, System.Globalization.CultureInfo? culture = null) { throw null; } + public static string? FormatValue(string? value, System.Globalization.CultureInfo? culture = null) { throw null; } + public static object? FormatValue(T value, System.Globalization.CultureInfo? culture = null) { throw null; } + public static bool TryConvertToBool(object? obj, System.Globalization.CultureInfo? culture, out bool value) { throw null; } + public static bool TryConvertToDateTime(object? obj, System.Globalization.CultureInfo? culture, out System.DateTime value) { throw null; } + public static bool TryConvertToDateTime(object? obj, System.Globalization.CultureInfo? culture, string format, out System.DateTime value) { throw null; } + public static bool TryConvertToDateTimeOffset(object? obj, System.Globalization.CultureInfo? culture, out System.DateTimeOffset value) { throw null; } + public static bool TryConvertToDateTimeOffset(object? obj, System.Globalization.CultureInfo? culture, string format, out System.DateTimeOffset value) { throw null; } + public static bool TryConvertToDecimal(object? obj, System.Globalization.CultureInfo? culture, out decimal value) { throw null; } + public static bool TryConvertToDouble(object? obj, System.Globalization.CultureInfo? culture, out double value) { throw null; } + public static bool TryConvertToFloat(object? obj, System.Globalization.CultureInfo? culture, out float value) { throw null; } + public static bool TryConvertToInt(object? obj, System.Globalization.CultureInfo? culture, out int value) { throw null; } + public static bool TryConvertToLong(object? obj, System.Globalization.CultureInfo? culture, out long value) { throw null; } + public static bool TryConvertToNullableBool(object? obj, System.Globalization.CultureInfo? culture, out bool? value) { throw null; } + public static bool TryConvertToNullableDateTime(object? obj, System.Globalization.CultureInfo? culture, out System.DateTime? value) { throw null; } + public static bool TryConvertToNullableDateTime(object? obj, System.Globalization.CultureInfo? culture, string format, out System.DateTime? value) { throw null; } + public static bool TryConvertToNullableDateTimeOffset(object? obj, System.Globalization.CultureInfo? culture, out System.DateTimeOffset? value) { throw null; } + public static bool TryConvertToNullableDateTimeOffset(object? obj, System.Globalization.CultureInfo? culture, string format, out System.DateTimeOffset? value) { throw null; } + public static bool TryConvertToNullableDecimal(object? obj, System.Globalization.CultureInfo? culture, out decimal? value) { throw null; } + public static bool TryConvertToNullableDouble(object? obj, System.Globalization.CultureInfo? culture, out double? value) { throw null; } + public static bool TryConvertToNullableFloat(object? obj, System.Globalization.CultureInfo? culture, out float? value) { throw null; } + public static bool TryConvertToNullableInt(object? obj, System.Globalization.CultureInfo? culture, out int? value) { throw null; } + public static bool TryConvertToNullableLong(object? obj, System.Globalization.CultureInfo? culture, out long? value) { throw null; } + public static bool TryConvertToNullableShort(object? obj, System.Globalization.CultureInfo? culture, out short? value) { throw null; } + public static bool TryConvertToShort(object? obj, System.Globalization.CultureInfo? culture, out short value) { throw null; } + public static bool TryConvertToString(object? obj, System.Globalization.CultureInfo? culture, out string? value) { throw null; } + public static bool TryConvertTo(object? obj, System.Globalization.CultureInfo? culture, out T value) { throw null; } + } + [System.AttributeUsageAttribute(System.AttributeTargets.Class, AllowMultiple=true, Inherited=true)] + public sealed partial class BindElementAttribute : System.Attribute + { + public BindElementAttribute(string element, string? suffix, string valueAttribute, string changeAttribute) { } + public string ChangeAttribute { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } } + public string Element { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } } + public string? Suffix { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } } + public string ValueAttribute { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } } + } + [System.AttributeUsageAttribute(System.AttributeTargets.Property, AllowMultiple=false, Inherited=true)] + public sealed partial class CascadingParameterAttribute : System.Attribute + { + public CascadingParameterAttribute() { } + public string? Name { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } + } + public partial class CascadingValue : Microsoft.AspNetCore.Components.IComponent + { + public CascadingValue() { } + [Microsoft.AspNetCore.Components.ParameterAttribute] + public Microsoft.AspNetCore.Components.RenderFragment ChildContent { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } + [Microsoft.AspNetCore.Components.ParameterAttribute] + public bool IsFixed { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } + [Microsoft.AspNetCore.Components.ParameterAttribute] + public string? Name { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } + [Microsoft.AspNetCore.Components.ParameterAttribute] + public TValue Value { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } + public void Attach(Microsoft.AspNetCore.Components.RenderHandle renderHandle) { } + public System.Threading.Tasks.Task SetParametersAsync(Microsoft.AspNetCore.Components.ParameterView parameters) { throw null; } + } + public partial class ChangeEventArgs : System.EventArgs + { + public ChangeEventArgs() { } + public object? Value { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } + } + public abstract partial class ComponentBase : Microsoft.AspNetCore.Components.IComponent, Microsoft.AspNetCore.Components.IHandleAfterRender, Microsoft.AspNetCore.Components.IHandleEvent + { + public ComponentBase() { } + protected virtual void BuildRenderTree(Microsoft.AspNetCore.Components.Rendering.RenderTreeBuilder builder) { } + protected System.Threading.Tasks.Task InvokeAsync(System.Action workItem) { throw null; } + protected System.Threading.Tasks.Task InvokeAsync(System.Func workItem) { throw null; } + void Microsoft.AspNetCore.Components.IComponent.Attach(Microsoft.AspNetCore.Components.RenderHandle renderHandle) { } + System.Threading.Tasks.Task Microsoft.AspNetCore.Components.IHandleAfterRender.OnAfterRenderAsync() { throw null; } + System.Threading.Tasks.Task Microsoft.AspNetCore.Components.IHandleEvent.HandleEventAsync(Microsoft.AspNetCore.Components.EventCallbackWorkItem callback, object? arg) { throw null; } + protected virtual void OnAfterRender(bool firstRender) { } + protected virtual System.Threading.Tasks.Task OnAfterRenderAsync(bool firstRender) { throw null; } + protected virtual void OnInitialized() { } + protected virtual System.Threading.Tasks.Task OnInitializedAsync() { throw null; } + protected virtual void OnParametersSet() { } + protected virtual System.Threading.Tasks.Task OnParametersSetAsync() { throw null; } + public virtual System.Threading.Tasks.Task SetParametersAsync(Microsoft.AspNetCore.Components.ParameterView parameters) { throw null; } + protected virtual bool ShouldRender() { throw null; } + protected void StateHasChanged() { } + } + public abstract partial class Dispatcher + { + protected Dispatcher() { } + public void AssertAccess() { } + public abstract bool CheckAccess(); + public static Microsoft.AspNetCore.Components.Dispatcher CreateDefault() { throw null; } + public abstract System.Threading.Tasks.Task InvokeAsync(System.Action workItem); + public abstract System.Threading.Tasks.Task InvokeAsync(System.Func workItem); + public abstract System.Threading.Tasks.Task InvokeAsync(System.Func> workItem); + public abstract System.Threading.Tasks.Task InvokeAsync(System.Func workItem); + protected void OnUnhandledException(System.UnhandledExceptionEventArgs e) { } + } + [System.Runtime.InteropServices.StructLayoutAttribute(System.Runtime.InteropServices.LayoutKind.Sequential)] + public readonly partial struct ElementReference + { + private readonly object _dummy; + private readonly int _dummyPrimitive; + public ElementReference(string id) { throw null; } + public ElementReference(string id, Microsoft.AspNetCore.Components.ElementReferenceContext? context) { throw null; } + public Microsoft.AspNetCore.Components.ElementReferenceContext? Context { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } } + public string Id { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } } + } + public abstract partial class ElementReferenceContext + { + protected ElementReferenceContext() { } + } + [System.Runtime.InteropServices.StructLayoutAttribute(System.Runtime.InteropServices.LayoutKind.Sequential)] + public readonly partial struct EventCallback + { + private readonly object _dummy; + private readonly int _dummyPrimitive; + public static readonly Microsoft.AspNetCore.Components.EventCallback Empty; + public static readonly Microsoft.AspNetCore.Components.EventCallbackFactory Factory; + public EventCallback(Microsoft.AspNetCore.Components.IHandleEvent? receiver, System.MulticastDelegate? @delegate) { throw null; } + public bool HasDelegate { get { throw null; } } + public System.Threading.Tasks.Task InvokeAsync() { throw null; } + public System.Threading.Tasks.Task InvokeAsync(object arg) { throw null; } + } + public sealed partial class EventCallbackFactory + { + public EventCallbackFactory() { } + [System.ComponentModel.EditorBrowsableAttribute(System.ComponentModel.EditorBrowsableState.Never)] + public Microsoft.AspNetCore.Components.EventCallback Create(object receiver, Microsoft.AspNetCore.Components.EventCallback callback) { throw null; } + public Microsoft.AspNetCore.Components.EventCallback Create(object receiver, System.Action callback) { throw null; } + public Microsoft.AspNetCore.Components.EventCallback Create(object receiver, System.Action callback) { throw null; } + public Microsoft.AspNetCore.Components.EventCallback Create(object receiver, System.Func callback) { throw null; } + public Microsoft.AspNetCore.Components.EventCallback Create(object receiver, System.Func callback) { throw null; } + [System.ComponentModel.EditorBrowsableAttribute(System.ComponentModel.EditorBrowsableState.Never)] + public Microsoft.AspNetCore.Components.EventCallback CreateInferred(object receiver, System.Action callback, TValue value) { throw null; } + [System.ComponentModel.EditorBrowsableAttribute(System.ComponentModel.EditorBrowsableState.Never)] + public Microsoft.AspNetCore.Components.EventCallback CreateInferred(object receiver, System.Func callback, TValue value) { throw null; } + [System.ComponentModel.EditorBrowsableAttribute(System.ComponentModel.EditorBrowsableState.Never)] + public Microsoft.AspNetCore.Components.EventCallback Create(object receiver, Microsoft.AspNetCore.Components.EventCallback callback) { throw null; } + [System.ComponentModel.EditorBrowsableAttribute(System.ComponentModel.EditorBrowsableState.Never)] + public Microsoft.AspNetCore.Components.EventCallback Create(object receiver, Microsoft.AspNetCore.Components.EventCallback callback) { throw null; } + public Microsoft.AspNetCore.Components.EventCallback Create(object receiver, System.Action callback) { throw null; } + public Microsoft.AspNetCore.Components.EventCallback Create(object receiver, System.Action callback) { throw null; } + public Microsoft.AspNetCore.Components.EventCallback Create(object receiver, System.Func callback) { throw null; } + public Microsoft.AspNetCore.Components.EventCallback Create(object receiver, System.Func callback) { throw null; } + } + public static partial class EventCallbackFactoryBinderExtensions + { + public static Microsoft.AspNetCore.Components.EventCallback CreateBinder(this Microsoft.AspNetCore.Components.EventCallbackFactory factory, object receiver, System.Action setter, bool existingValue, System.Globalization.CultureInfo? culture = null) { throw null; } + public static Microsoft.AspNetCore.Components.EventCallback CreateBinder(this Microsoft.AspNetCore.Components.EventCallbackFactory factory, object receiver, System.Action setter, System.DateTimeOffset existingValue, System.Globalization.CultureInfo? culture = null) { throw null; } + public static Microsoft.AspNetCore.Components.EventCallback CreateBinder(this Microsoft.AspNetCore.Components.EventCallbackFactory factory, object receiver, System.Action setter, System.DateTimeOffset existingValue, string format, System.Globalization.CultureInfo? culture = null) { throw null; } + public static Microsoft.AspNetCore.Components.EventCallback CreateBinder(this Microsoft.AspNetCore.Components.EventCallbackFactory factory, object receiver, System.Action setter, System.DateTime existingValue, System.Globalization.CultureInfo? culture = null) { throw null; } + public static Microsoft.AspNetCore.Components.EventCallback CreateBinder(this Microsoft.AspNetCore.Components.EventCallbackFactory factory, object receiver, System.Action setter, System.DateTime existingValue, string format, System.Globalization.CultureInfo? culture = null) { throw null; } + public static Microsoft.AspNetCore.Components.EventCallback CreateBinder(this Microsoft.AspNetCore.Components.EventCallbackFactory factory, object receiver, System.Action setter, decimal existingValue, System.Globalization.CultureInfo? culture = null) { throw null; } + public static Microsoft.AspNetCore.Components.EventCallback CreateBinder(this Microsoft.AspNetCore.Components.EventCallbackFactory factory, object receiver, System.Action setter, double existingValue, System.Globalization.CultureInfo? culture = null) { throw null; } + public static Microsoft.AspNetCore.Components.EventCallback CreateBinder(this Microsoft.AspNetCore.Components.EventCallbackFactory factory, object receiver, System.Action setter, short existingValue, System.Globalization.CultureInfo? culture = null) { throw null; } + public static Microsoft.AspNetCore.Components.EventCallback CreateBinder(this Microsoft.AspNetCore.Components.EventCallbackFactory factory, object receiver, System.Action setter, int existingValue, System.Globalization.CultureInfo? culture = null) { throw null; } + public static Microsoft.AspNetCore.Components.EventCallback CreateBinder(this Microsoft.AspNetCore.Components.EventCallbackFactory factory, object receiver, System.Action setter, long existingValue, System.Globalization.CultureInfo? culture = null) { throw null; } + public static Microsoft.AspNetCore.Components.EventCallback CreateBinder(this Microsoft.AspNetCore.Components.EventCallbackFactory factory, object receiver, System.Action setter, bool? existingValue, System.Globalization.CultureInfo? culture = null) { throw null; } + public static Microsoft.AspNetCore.Components.EventCallback CreateBinder(this Microsoft.AspNetCore.Components.EventCallbackFactory factory, object receiver, System.Action setter, System.DateTimeOffset? existingValue, System.Globalization.CultureInfo? culture = null) { throw null; } + public static Microsoft.AspNetCore.Components.EventCallback CreateBinder(this Microsoft.AspNetCore.Components.EventCallbackFactory factory, object receiver, System.Action setter, System.DateTimeOffset? existingValue, string format, System.Globalization.CultureInfo? culture = null) { throw null; } + public static Microsoft.AspNetCore.Components.EventCallback CreateBinder(this Microsoft.AspNetCore.Components.EventCallbackFactory factory, object receiver, System.Action setter, System.DateTime? existingValue, System.Globalization.CultureInfo? culture = null) { throw null; } + public static Microsoft.AspNetCore.Components.EventCallback CreateBinder(this Microsoft.AspNetCore.Components.EventCallbackFactory factory, object receiver, System.Action setter, System.DateTime? existingValue, string format, System.Globalization.CultureInfo? culture = null) { throw null; } + public static Microsoft.AspNetCore.Components.EventCallback CreateBinder(this Microsoft.AspNetCore.Components.EventCallbackFactory factory, object receiver, System.Action setter, decimal? existingValue, System.Globalization.CultureInfo? culture = null) { throw null; } + public static Microsoft.AspNetCore.Components.EventCallback CreateBinder(this Microsoft.AspNetCore.Components.EventCallbackFactory factory, object receiver, System.Action setter, double? existingValue, System.Globalization.CultureInfo? culture = null) { throw null; } + public static Microsoft.AspNetCore.Components.EventCallback CreateBinder(this Microsoft.AspNetCore.Components.EventCallbackFactory factory, object receiver, System.Action setter, short? existingValue, System.Globalization.CultureInfo? culture = null) { throw null; } + public static Microsoft.AspNetCore.Components.EventCallback CreateBinder(this Microsoft.AspNetCore.Components.EventCallbackFactory factory, object receiver, System.Action setter, int? existingValue, System.Globalization.CultureInfo? culture = null) { throw null; } + public static Microsoft.AspNetCore.Components.EventCallback CreateBinder(this Microsoft.AspNetCore.Components.EventCallbackFactory factory, object receiver, System.Action setter, long? existingValue, System.Globalization.CultureInfo? culture = null) { throw null; } + public static Microsoft.AspNetCore.Components.EventCallback CreateBinder(this Microsoft.AspNetCore.Components.EventCallbackFactory factory, object receiver, System.Action setter, float? existingValue, System.Globalization.CultureInfo? culture = null) { throw null; } + public static Microsoft.AspNetCore.Components.EventCallback CreateBinder(this Microsoft.AspNetCore.Components.EventCallbackFactory factory, object receiver, System.Action setter, float existingValue, System.Globalization.CultureInfo? culture = null) { throw null; } + public static Microsoft.AspNetCore.Components.EventCallback CreateBinder(this Microsoft.AspNetCore.Components.EventCallbackFactory factory, object receiver, System.Action setter, string existingValue, System.Globalization.CultureInfo? culture = null) { throw null; } + public static Microsoft.AspNetCore.Components.EventCallback CreateBinder(this Microsoft.AspNetCore.Components.EventCallbackFactory factory, object receiver, System.Action setter, T existingValue, System.Globalization.CultureInfo? culture = null) { throw null; } + } + public static partial class EventCallbackFactoryEventArgsExtensions + { + public static Microsoft.AspNetCore.Components.EventCallback Create(this Microsoft.AspNetCore.Components.EventCallbackFactory factory, object receiver, System.Action callback) { throw null; } + public static Microsoft.AspNetCore.Components.EventCallback Create(this Microsoft.AspNetCore.Components.EventCallbackFactory factory, object receiver, System.Action callback) { throw null; } + public static Microsoft.AspNetCore.Components.EventCallback Create(this Microsoft.AspNetCore.Components.EventCallbackFactory factory, object receiver, System.Func callback) { throw null; } + public static Microsoft.AspNetCore.Components.EventCallback Create(this Microsoft.AspNetCore.Components.EventCallbackFactory factory, object receiver, System.Func callback) { throw null; } + } + [System.Runtime.InteropServices.StructLayoutAttribute(System.Runtime.InteropServices.LayoutKind.Sequential)] + public readonly partial struct EventCallbackWorkItem + { + private readonly object _dummy; + private readonly int _dummyPrimitive; + public static readonly Microsoft.AspNetCore.Components.EventCallbackWorkItem Empty; + public EventCallbackWorkItem(System.MulticastDelegate? @delegate) { throw null; } + public System.Threading.Tasks.Task InvokeAsync(object? arg) { throw null; } + } + [System.Runtime.InteropServices.StructLayoutAttribute(System.Runtime.InteropServices.LayoutKind.Sequential)] + public readonly partial struct EventCallback + { + private readonly object _dummy; + private readonly int _dummyPrimitive; + public static readonly Microsoft.AspNetCore.Components.EventCallback Empty; + public EventCallback(Microsoft.AspNetCore.Components.IHandleEvent? receiver, System.MulticastDelegate? @delegate) { throw null; } + public bool HasDelegate { get { throw null; } } + public System.Threading.Tasks.Task InvokeAsync() { throw null; } + public System.Threading.Tasks.Task InvokeAsync(TValue arg) { throw null; } + } + [System.AttributeUsageAttribute(System.AttributeTargets.Class, AllowMultiple=true, Inherited=true)] + public sealed partial class EventHandlerAttribute : System.Attribute + { + public EventHandlerAttribute(string attributeName, System.Type eventArgsType) { } + public EventHandlerAttribute(string attributeName, System.Type eventArgsType, bool enableStopPropagation, bool enablePreventDefault) { } + public string AttributeName { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } } + public bool EnablePreventDefault { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } } + public bool EnableStopPropagation { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } } + public System.Type EventArgsType { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } } + } + public partial interface IComponent + { + void Attach(Microsoft.AspNetCore.Components.RenderHandle renderHandle); + System.Threading.Tasks.Task SetParametersAsync(Microsoft.AspNetCore.Components.ParameterView parameters); + } + public partial interface IComponentActivator + { + Microsoft.AspNetCore.Components.IComponent CreateInstance(System.Type componentType); + } + public partial interface IHandleAfterRender + { + System.Threading.Tasks.Task OnAfterRenderAsync(); + } + public partial interface IHandleEvent + { + System.Threading.Tasks.Task HandleEventAsync(Microsoft.AspNetCore.Components.EventCallbackWorkItem item, object? arg); + } + [System.AttributeUsageAttribute(System.AttributeTargets.Property, AllowMultiple=false, Inherited=true)] + public sealed partial class InjectAttribute : System.Attribute + { + public InjectAttribute() { } + } + [System.AttributeUsageAttribute(System.AttributeTargets.Class, AllowMultiple=false, Inherited=true)] + public sealed partial class LayoutAttribute : System.Attribute + { + public LayoutAttribute(System.Type layoutType) { } + public System.Type LayoutType { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } } + } + public abstract partial class LayoutComponentBase : Microsoft.AspNetCore.Components.ComponentBase + { + protected LayoutComponentBase() { } + [Microsoft.AspNetCore.Components.ParameterAttribute] + public Microsoft.AspNetCore.Components.RenderFragment? Body { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } + } + public partial class LayoutView : Microsoft.AspNetCore.Components.IComponent + { + public LayoutView() { } + [Microsoft.AspNetCore.Components.ParameterAttribute] + public Microsoft.AspNetCore.Components.RenderFragment ChildContent { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } + [Microsoft.AspNetCore.Components.ParameterAttribute] + public System.Type Layout { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } + public void Attach(Microsoft.AspNetCore.Components.RenderHandle renderHandle) { } + public System.Threading.Tasks.Task SetParametersAsync(Microsoft.AspNetCore.Components.ParameterView parameters) { throw null; } + } + public sealed partial class LocationChangeException : System.Exception + { + public LocationChangeException(string message, System.Exception innerException) { } + } + [System.Runtime.InteropServices.StructLayoutAttribute(System.Runtime.InteropServices.LayoutKind.Sequential)] + public readonly partial struct MarkupString + { + private readonly object _dummy; + private readonly int _dummyPrimitive; + public MarkupString(string value) { throw null; } + public string Value { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } } + public static explicit operator Microsoft.AspNetCore.Components.MarkupString (string value) { throw null; } + public override string ToString() { throw null; } + } + public partial class NavigationException : System.Exception + { + public NavigationException(string uri) { } + public string Location { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } } + } + public abstract partial class NavigationManager + { + protected NavigationManager() { } + public string BaseUri { get { throw null; } protected set { } } + public string Uri { get { throw null; } protected set { } } + public event System.EventHandler LocationChanged { add { } remove { } } + protected virtual void EnsureInitialized() { } + protected void Initialize(string baseUri, string uri) { } + public void NavigateTo(string uri, bool forceLoad = false) { } + protected abstract void NavigateToCore(string uri, bool forceLoad); + protected void NotifyLocationChanged(bool isInterceptedLink) { } + public System.Uri ToAbsoluteUri(string relativeUri) { throw null; } + public string ToBaseRelativePath(string uri) { throw null; } + } + public abstract partial class OwningComponentBase : Microsoft.AspNetCore.Components.ComponentBase, System.IDisposable + { + protected OwningComponentBase() { } + protected bool IsDisposed { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } } + protected System.IServiceProvider ScopedServices { get { throw null; } } + protected virtual void Dispose(bool disposing) { } + void System.IDisposable.Dispose() { } + } + public abstract partial class OwningComponentBase : Microsoft.AspNetCore.Components.OwningComponentBase, System.IDisposable where TService : notnull + { + protected OwningComponentBase() { } + protected TService Service { get { throw null; } } + } + [System.AttributeUsageAttribute(System.AttributeTargets.Property, AllowMultiple=false, Inherited=true)] + public sealed partial class ParameterAttribute : System.Attribute + { + public ParameterAttribute() { } + public bool CaptureUnmatchedValues { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } + } + [System.Runtime.InteropServices.StructLayoutAttribute(System.Runtime.InteropServices.LayoutKind.Sequential)] + public readonly partial struct ParameterValue + { + private readonly object _dummy; + private readonly int _dummyPrimitive; + public bool Cascading { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } } + public string Name { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } } + public object Value { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } } + } + [System.Runtime.InteropServices.StructLayoutAttribute(System.Runtime.InteropServices.LayoutKind.Sequential)] + public readonly partial struct ParameterView + { + private readonly object _dummy; + private readonly int _dummyPrimitive; + public static Microsoft.AspNetCore.Components.ParameterView Empty { get { throw null; } } + public static Microsoft.AspNetCore.Components.ParameterView FromDictionary(System.Collections.Generic.IDictionary parameters) { throw null; } + public Microsoft.AspNetCore.Components.ParameterView.Enumerator GetEnumerator() { throw null; } + [return: System.Diagnostics.CodeAnalysis.MaybeNullAttribute] + public TValue GetValueOrDefault(string parameterName) { throw null; } + public TValue GetValueOrDefault(string parameterName, TValue defaultValue) { throw null; } + public void SetParameterProperties(object target) { } + public System.Collections.Generic.IReadOnlyDictionary ToDictionary() { throw null; } + public bool TryGetValue(string parameterName, [System.Diagnostics.CodeAnalysis.MaybeNullWhenAttribute(false)] out TValue result) { throw null; } + [System.Runtime.InteropServices.StructLayoutAttribute(System.Runtime.InteropServices.LayoutKind.Sequential)] + public partial struct Enumerator + { + private object _dummy; + private int _dummyPrimitive; + public Microsoft.AspNetCore.Components.ParameterValue Current { get { throw null; } } + public bool MoveNext() { throw null; } + } + } + public delegate void RenderFragment(Microsoft.AspNetCore.Components.Rendering.RenderTreeBuilder builder); + public delegate Microsoft.AspNetCore.Components.RenderFragment RenderFragment(TValue value); + [System.Runtime.InteropServices.StructLayoutAttribute(System.Runtime.InteropServices.LayoutKind.Sequential)] + public readonly partial struct RenderHandle + { + private readonly object _dummy; + private readonly int _dummyPrimitive; + public Microsoft.AspNetCore.Components.Dispatcher Dispatcher { get { throw null; } } + public bool IsInitialized { get { throw null; } } + public void Render(Microsoft.AspNetCore.Components.RenderFragment renderFragment) { } + } + [System.AttributeUsageAttribute(System.AttributeTargets.Class, AllowMultiple=true, Inherited=false)] + public sealed partial class RouteAttribute : System.Attribute + { + public RouteAttribute(string template) { } + public string Template { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } } + } + public sealed partial class RouteData + { + public RouteData(System.Type pageType, System.Collections.Generic.IReadOnlyDictionary routeValues) { } + public System.Type PageType { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } } + public System.Collections.Generic.IReadOnlyDictionary RouteValues { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } } + } + public partial class RouteView : Microsoft.AspNetCore.Components.IComponent + { + public RouteView() { } + [Microsoft.AspNetCore.Components.ParameterAttribute] + public System.Type DefaultLayout { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } + [Microsoft.AspNetCore.Components.ParameterAttribute] + public Microsoft.AspNetCore.Components.RouteData RouteData { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } + public void Attach(Microsoft.AspNetCore.Components.RenderHandle renderHandle) { } + protected virtual void Render(Microsoft.AspNetCore.Components.Rendering.RenderTreeBuilder builder) { } + public System.Threading.Tasks.Task SetParametersAsync(Microsoft.AspNetCore.Components.ParameterView parameters) { throw null; } + } +} +namespace Microsoft.AspNetCore.Components.CompilerServices +{ + public static partial class RuntimeHelpers + { + public static Microsoft.AspNetCore.Components.EventCallback CreateInferredEventCallback(object receiver, System.Action callback, T value) { throw null; } + public static Microsoft.AspNetCore.Components.EventCallback CreateInferredEventCallback(object receiver, System.Func callback, T value) { throw null; } + public static T TypeCheck(T value) { throw null; } + } +} +namespace Microsoft.AspNetCore.Components.Rendering +{ + public sealed partial class RenderTreeBuilder : System.IDisposable + { + public RenderTreeBuilder() { } + public void AddAttribute(int sequence, in Microsoft.AspNetCore.Components.RenderTree.RenderTreeFrame frame) { } + public void AddAttribute(int sequence, string name) { } + public void AddAttribute(int sequence, string name, Microsoft.AspNetCore.Components.EventCallback value) { } + public void AddAttribute(int sequence, string name, bool value) { } + public void AddAttribute(int sequence, string name, System.MulticastDelegate? value) { } + public void AddAttribute(int sequence, string name, object? value) { } + public void AddAttribute(int sequence, string name, string? value) { } + public void AddAttribute(int sequence, string name, Microsoft.AspNetCore.Components.EventCallback value) { } + public void AddComponentReferenceCapture(int sequence, System.Action componentReferenceCaptureAction) { } + public void AddContent(int sequence, Microsoft.AspNetCore.Components.MarkupString markupContent) { } + public void AddContent(int sequence, Microsoft.AspNetCore.Components.RenderFragment? fragment) { } + public void AddContent(int sequence, object? textContent) { } + public void AddContent(int sequence, string? textContent) { } + public void AddContent(int sequence, Microsoft.AspNetCore.Components.RenderFragment? fragment, TValue value) { } + public void AddElementReferenceCapture(int sequence, System.Action elementReferenceCaptureAction) { } + public void AddMarkupContent(int sequence, string? markupContent) { } + public void AddMultipleAttributes(int sequence, System.Collections.Generic.IEnumerable>? attributes) { } + public void Clear() { } + public void CloseComponent() { } + public void CloseElement() { } + public void CloseRegion() { } + public Microsoft.AspNetCore.Components.RenderTree.ArrayRange GetFrames() { throw null; } + public void OpenComponent(int sequence, System.Type componentType) { } + public void OpenComponent(int sequence) where TComponent : notnull, Microsoft.AspNetCore.Components.IComponent { } + public void OpenElement(int sequence, string elementName) { } + public void OpenRegion(int sequence) { } + public void SetKey(object? value) { } + public void SetUpdatesAttributeName(string updatesAttributeName) { } + void System.IDisposable.Dispose() { } + } +} +namespace Microsoft.AspNetCore.Components.RenderTree +{ + [System.Runtime.InteropServices.StructLayoutAttribute(System.Runtime.InteropServices.LayoutKind.Sequential)] + public readonly partial struct ArrayBuilderSegment : System.Collections.Generic.IEnumerable, System.Collections.IEnumerable + { + private readonly object _dummy; + private readonly int _dummyPrimitive; + public T[] Array { get { throw null; } } + public int Count { get { throw null; } } + public T this[int index] { get { throw null; } } + public int Offset { get { throw null; } } + System.Collections.Generic.IEnumerator System.Collections.Generic.IEnumerable.GetEnumerator() { throw null; } + System.Collections.IEnumerator System.Collections.IEnumerable.GetEnumerator() { throw null; } + } + [System.Runtime.InteropServices.StructLayoutAttribute(System.Runtime.InteropServices.LayoutKind.Sequential)] + public readonly partial struct ArrayRange + { + public readonly T[] Array; + public readonly int Count; + public ArrayRange(T[] array, int count) { throw null; } + public Microsoft.AspNetCore.Components.RenderTree.ArrayRange Clone() { throw null; } + } + public partial class EventFieldInfo + { + public EventFieldInfo() { } + public int ComponentId { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } + public object FieldValue { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } + } + [System.Runtime.InteropServices.StructLayoutAttribute(System.Runtime.InteropServices.LayoutKind.Sequential)] + public readonly partial struct RenderBatch + { + private readonly object _dummy; + private readonly int _dummyPrimitive; + public Microsoft.AspNetCore.Components.RenderTree.ArrayRange DisposedComponentIDs { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } } + public Microsoft.AspNetCore.Components.RenderTree.ArrayRange DisposedEventHandlerIDs { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } } + public Microsoft.AspNetCore.Components.RenderTree.ArrayRange ReferenceFrames { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } } + public Microsoft.AspNetCore.Components.RenderTree.ArrayRange UpdatedComponents { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } } + } + public abstract partial class Renderer : System.IDisposable + { + public Renderer(System.IServiceProvider serviceProvider, Microsoft.Extensions.Logging.ILoggerFactory loggerFactory) { } + public Renderer(System.IServiceProvider serviceProvider, Microsoft.Extensions.Logging.ILoggerFactory loggerFactory, Microsoft.AspNetCore.Components.IComponentActivator componentActivator) { } + public abstract Microsoft.AspNetCore.Components.Dispatcher Dispatcher { get; } + protected internal Microsoft.AspNetCore.Components.ElementReferenceContext? ElementReferenceContext { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] protected set { } } + public event System.UnhandledExceptionEventHandler UnhandledSynchronizationException { add { } remove { } } + protected internal int AssignRootComponentId(Microsoft.AspNetCore.Components.IComponent component) { throw null; } + public virtual System.Threading.Tasks.Task DispatchEventAsync(ulong eventHandlerId, Microsoft.AspNetCore.Components.RenderTree.EventFieldInfo fieldInfo, System.EventArgs eventArgs) { throw null; } + public void Dispose() { } + protected virtual void Dispose(bool disposing) { } + protected Microsoft.AspNetCore.Components.RenderTree.ArrayRange GetCurrentRenderTreeFrames(int componentId) { throw null; } + protected abstract void HandleException(System.Exception exception); + protected Microsoft.AspNetCore.Components.IComponent InstantiateComponent(System.Type componentType) { throw null; } + protected virtual void ProcessPendingRender() { } + protected System.Threading.Tasks.Task RenderRootComponentAsync(int componentId) { throw null; } + [System.Diagnostics.DebuggerStepThroughAttribute] + protected System.Threading.Tasks.Task RenderRootComponentAsync(int componentId, Microsoft.AspNetCore.Components.ParameterView initialParameters) { throw null; } + protected abstract System.Threading.Tasks.Task UpdateDisplayAsync(in Microsoft.AspNetCore.Components.RenderTree.RenderBatch renderBatch); + } + [System.Runtime.InteropServices.StructLayoutAttribute(System.Runtime.InteropServices.LayoutKind.Sequential)] + public readonly partial struct RenderTreeDiff + { + public readonly int ComponentId; + public readonly Microsoft.AspNetCore.Components.RenderTree.ArrayBuilderSegment Edits; + } + [System.Runtime.InteropServices.StructLayoutAttribute(System.Runtime.InteropServices.LayoutKind.Explicit)] + public readonly partial struct RenderTreeEdit + { + [System.Runtime.InteropServices.FieldOffsetAttribute(8)] + public readonly int MoveToSiblingIndex; + [System.Runtime.InteropServices.FieldOffsetAttribute(8)] + public readonly int ReferenceFrameIndex; + [System.Runtime.InteropServices.FieldOffsetAttribute(16)] + public readonly string RemovedAttributeName; + [System.Runtime.InteropServices.FieldOffsetAttribute(4)] + public readonly int SiblingIndex; + [System.Runtime.InteropServices.FieldOffsetAttribute(0)] + public readonly Microsoft.AspNetCore.Components.RenderTree.RenderTreeEditType Type; + } + public enum RenderTreeEditType + { + PrependFrame = 1, + RemoveFrame = 2, + SetAttribute = 3, + RemoveAttribute = 4, + UpdateText = 5, + StepIn = 6, + StepOut = 7, + UpdateMarkup = 8, + PermutationListEntry = 9, + PermutationListEnd = 10, + } + public enum RenderTreeFrameType : short + { + None = (short)0, + Element = (short)1, + Text = (short)2, + Attribute = (short)3, + Component = (short)4, + Region = (short)5, + ElementReferenceCapture = (short)6, + ComponentReferenceCapture = (short)7, + Markup = (short)8, + } +} +namespace Microsoft.AspNetCore.Components.Routing +{ + public partial interface IHostEnvironmentNavigationManager + { + void Initialize(string baseUri, string uri); + } + public partial interface INavigationInterception + { + System.Threading.Tasks.Task EnableNavigationInterceptionAsync(); + } + public partial class LocationChangedEventArgs : System.EventArgs + { + public LocationChangedEventArgs(string location, bool isNavigationIntercepted) { } + public bool IsNavigationIntercepted { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } } + public string Location { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } } + } + public sealed partial class NavigationContext + { + internal NavigationContext() { } + public System.Threading.CancellationToken CancellationToken { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } } + public string Path { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } } + } + public partial class Router : Microsoft.AspNetCore.Components.IComponent, Microsoft.AspNetCore.Components.IHandleAfterRender, System.IDisposable + { + public Router() { } + [Microsoft.AspNetCore.Components.ParameterAttribute] + public System.Collections.Generic.IEnumerable AdditionalAssemblies { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } + [Microsoft.AspNetCore.Components.ParameterAttribute] + public System.Reflection.Assembly AppAssembly { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } + [Microsoft.AspNetCore.Components.ParameterAttribute] + public Microsoft.AspNetCore.Components.RenderFragment Found { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } + [Microsoft.AspNetCore.Components.ParameterAttribute] + public Microsoft.AspNetCore.Components.RenderFragment Navigating { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } + [Microsoft.AspNetCore.Components.ParameterAttribute] + public Microsoft.AspNetCore.Components.RenderFragment NotFound { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } + [Microsoft.AspNetCore.Components.ParameterAttribute] + public Microsoft.AspNetCore.Components.EventCallback OnNavigateAsync { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } + public void Attach(Microsoft.AspNetCore.Components.RenderHandle renderHandle) { } + public void Dispose() { } + System.Threading.Tasks.Task Microsoft.AspNetCore.Components.IHandleAfterRender.OnAfterRenderAsync() { throw null; } + [System.Diagnostics.DebuggerStepThroughAttribute] + public System.Threading.Tasks.Task SetParametersAsync(Microsoft.AspNetCore.Components.ParameterView parameters) { throw null; } + } +} +namespace Microsoft.AspNetCore.Components.Virtualization +{ + public sealed partial class InfiniteScroll : Microsoft.AspNetCore.Components.Virtualization.VirtualizeBase + { + public InfiniteScroll() { } + [Microsoft.AspNetCore.Components.ParameterAttribute] + public Microsoft.AspNetCore.Components.RenderFragment? InfiniteScrollFooter { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } + [Microsoft.AspNetCore.Components.ParameterAttribute] + public Microsoft.AspNetCore.Components.RenderFragment Item { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } + [Microsoft.AspNetCore.Components.ParameterAttribute] + public int ItemBatchSize { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } + protected override int ItemCount { get { throw null; } } + [Microsoft.AspNetCore.Components.ParameterAttribute] + public System.Func>> ItemsProvider { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } + protected override System.Collections.Generic.IEnumerable GetItems(int start, int count) { throw null; } + } + public partial interface IVirtualizationHelper : System.IAsyncDisposable + { + event System.EventHandler BottomSpacerVisible; + event System.EventHandler TopSpacerVisible; + System.Threading.Tasks.ValueTask InitAsync(Microsoft.AspNetCore.Components.ElementReference topSpacer, Microsoft.AspNetCore.Components.ElementReference bottomSpacer); + } + public partial interface IVirtualizationService + { + Microsoft.AspNetCore.Components.Virtualization.IVirtualizationHelper CreateVirtualizationHelper(); + } + public partial class SpacerEventArgs : System.EventArgs + { + public SpacerEventArgs(float spacerSize, float containerSize) { } + public float ContainerSize { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } } + public float SpacerSize { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } } + } + public abstract partial class VirtualizeBase : Microsoft.AspNetCore.Components.ComponentBase, System.IAsyncDisposable + { + protected VirtualizeBase() { } + protected abstract int ItemCount { get; } + [Microsoft.AspNetCore.Components.ParameterAttribute] + public float ItemSize { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } + protected override void BuildRenderTree(Microsoft.AspNetCore.Components.Rendering.RenderTreeBuilder builder) { } + [System.Diagnostics.DebuggerStepThroughAttribute] + public System.Threading.Tasks.ValueTask DisposeAsync() { throw null; } + protected abstract System.Collections.Generic.IEnumerable GetItems(int start, int count); + [System.Diagnostics.DebuggerStepThroughAttribute] + protected override System.Threading.Tasks.Task OnAfterRenderAsync(bool firstRender) { throw null; } + protected override void OnParametersSet() { } + } + public sealed partial class Virtualize : Microsoft.AspNetCore.Components.Virtualization.VirtualizeBase + { + public Virtualize() { } + [Microsoft.AspNetCore.Components.ParameterAttribute] + public Microsoft.AspNetCore.Components.RenderFragment? ChildContent { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } + protected override int ItemCount { get { throw null; } } + [Microsoft.AspNetCore.Components.ParameterAttribute] + public System.Collections.Generic.ICollection Items { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } + protected override System.Collections.Generic.IEnumerable GetItems(int start, int count) { throw null; } + } +} diff --git a/src/Components/Components/src/Virtualization/IVirtualizationHelper.cs b/src/Components/Components/src/Virtualization/IVirtualizationHelper.cs new file mode 100644 index 000000000000..dcf9787287e2 --- /dev/null +++ b/src/Components/Components/src/Virtualization/IVirtualizationHelper.cs @@ -0,0 +1,32 @@ +// Copyright (c) .NET Foundation. All rights reserved. +// Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information. + +using System; +using System.Threading.Tasks; + +namespace Microsoft.AspNetCore.Components.Virtualization +{ + /// + /// Describes a helper for detecting and relaying virtualization events. + /// + public interface IVirtualizationHelper : IAsyncDisposable + { + /// + /// Performs platform-specific initialization. + /// + /// The representing the top spacer. + /// The representing the bottom spacer. + /// The associated with the completion of this operation. + ValueTask InitAsync(ElementReference topSpacer, ElementReference bottomSpacer); + + /// + /// Invoked when the top spacer becomes visible. + /// + event EventHandler TopSpacerVisible; + + /// + /// Invoked when the bottom spacer becomes visible. + /// + event EventHandler BottomSpacerVisible; + } +} diff --git a/src/Components/Components/src/Virtualization/IVirtualizationService.cs b/src/Components/Components/src/Virtualization/IVirtualizationService.cs new file mode 100644 index 000000000000..4ff5e5595bdf --- /dev/null +++ b/src/Components/Components/src/Virtualization/IVirtualizationService.cs @@ -0,0 +1,17 @@ +// Copyright (c) .NET Foundation. All rights reserved. +// Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information. + +namespace Microsoft.AspNetCore.Components.Virtualization +{ + /// + /// Describes services enabling platform-specific virtualization. + /// + public interface IVirtualizationService + { + /// + /// Creates a helper used for detecting and relaying virtualization events. + /// + /// + IVirtualizationHelper CreateVirtualizationHelper(); + } +} diff --git a/src/Components/Components/src/Virtualization/InfiniteScroll.cs b/src/Components/Components/src/Virtualization/InfiniteScroll.cs new file mode 100644 index 000000000000..9223ccd034a4 --- /dev/null +++ b/src/Components/Components/src/Virtualization/InfiniteScroll.cs @@ -0,0 +1,84 @@ +// Copyright (c) .NET Foundation. All rights reserved. +// Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information. + +using System; +using System.Collections.Concurrent; +using System.Collections.Generic; +using System.Linq; +using System.Threading; +using System.Threading.Tasks; + +namespace Microsoft.AspNetCore.Components.Virtualization +{ + /// + /// Provides functionality for rendering a virtualized, infinite list of items. + /// + /// The context type for the items being rendered. + public sealed class InfiniteScroll : VirtualizeBase + { + private readonly ConcurrentQueue _loadedItems = new ConcurrentQueue(); + + private int _fetchingItems; + + protected override int ItemCount => InfiniteScrollFooter == null ? _loadedItems.Count : _loadedItems.Count + 1; + + /// + /// Gets or sets the list item template. + /// + [Parameter] + public RenderFragment Item { get; set; } = default!; + + /// + /// Gets or sets the infinite scroll footer template. + /// + [Parameter] + public RenderFragment? InfiniteScrollFooter { get; set; } + + /// + /// Gets or sets the function that provides items for the inifinite scroll. + /// + [Parameter] + public Func>> ItemsProvider { get; set; } = default!; + + /// + /// The batch size in which items are fetched. + /// + [Parameter] + public int ItemBatchSize { get; set; } + + protected override IEnumerable GetItems(int start, int count) + { + if (start + count >= _loadedItems.Count) + { + // Fetch more items if we're not already + FetchItemsAsync(); + + var items = _loadedItems.Skip(start).Select(item => Item(item)); + + return InfiniteScrollFooter == null ? items : items.Append(InfiniteScrollFooter); + } + else + { + return _loadedItems.Skip(start).Take(count).Select(item => Item(item)); + } + } + + private void FetchItemsAsync() + { + if (Interlocked.Exchange(ref _fetchingItems, 1) == 0) + { + ItemsProvider(new Range(_loadedItems.Count, _loadedItems.Count + ItemBatchSize)).ContinueWith(t => + { + foreach (var item in t.Result) + { + _loadedItems.Enqueue(item); + } + + _fetchingItems = 0; + + InvokeAsync(() => StateHasChanged()); + }); + } + } + } +} diff --git a/src/Components/Components/src/Virtualization/SpacerEventArgs.cs b/src/Components/Components/src/Virtualization/SpacerEventArgs.cs new file mode 100644 index 000000000000..de52961a4108 --- /dev/null +++ b/src/Components/Components/src/Virtualization/SpacerEventArgs.cs @@ -0,0 +1,34 @@ +// Copyright (c) .NET Foundation. All rights reserved. +// Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information. + +using System; + +namespace Microsoft.AspNetCore.Components.Virtualization +{ + /// + /// Describes an event involving a spacer in a virtualized list. + /// + public class SpacerEventArgs : EventArgs + { + /// + /// The new size of the spacer. + /// + public float SpacerSize { get; } + + /// + /// The current size of the spacer's container. + /// + public float ContainerSize { get; } + + /// + /// Instantiates a new instance. + /// + /// The new size of the spacer. + /// The current size of the spacer's container. + public SpacerEventArgs(float spacerSize, float containerSize) + { + SpacerSize = spacerSize; + ContainerSize = containerSize; + } + } +} diff --git a/src/Components/Components/src/Virtualization/Virtualize.cs b/src/Components/Components/src/Virtualization/Virtualize.cs new file mode 100644 index 000000000000..1f7dcd8f6ebb --- /dev/null +++ b/src/Components/Components/src/Virtualization/Virtualize.cs @@ -0,0 +1,36 @@ +// Copyright (c) .NET Foundation. All rights reserved. +// Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information. + +using System.Collections.Generic; +using System.Linq; + +namespace Microsoft.AspNetCore.Components.Virtualization +{ + /// + /// Provides functionality for rendering a virtualized, fixed-size list of items. + /// + /// The context type for the items being rendered. + public sealed class Virtualize : VirtualizeBase + { + protected override int ItemCount => Items.Count; + + /// + /// Gets or sets the content template for list items. + /// + [Parameter] + public RenderFragment? ChildContent { get; set; } + + /// + /// Gets or sets the collection of items used to generate the list. + /// + [Parameter] + public ICollection Items { get; set; } = default!; + + protected override IEnumerable GetItems(int start, int count) + { + return ChildContent == null ? + Enumerable.Empty() : + Items.Skip(start).Take(count).Select(item => ChildContent.Invoke(item)); + } + } +} diff --git a/src/Components/Components/src/Virtualization/VirtualizeBase.cs b/src/Components/Components/src/Virtualization/VirtualizeBase.cs index 09053366a639..7c4f18459e2b 100644 --- a/src/Components/Components/src/Virtualization/VirtualizeBase.cs +++ b/src/Components/Components/src/Virtualization/VirtualizeBase.cs @@ -1,162 +1,134 @@ +// Copyright (c) .NET Foundation. All rights reserved. +// Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information. + using System; -using System.Collections.Concurrent; using System.Collections.Generic; -using System.Linq; -using System.Threading; using System.Threading.Tasks; using Microsoft.AspNetCore.Components.Rendering; namespace Microsoft.AspNetCore.Components.Virtualization { - public abstract class VirtualizeBase : ComponentBase + /// + /// Provides common functionality for virtualized lists. + /// + /// The context type for the items being rendered. + public abstract class VirtualizeBase : ComponentBase, IAsyncDisposable { - private readonly ConcurrentQueue _loadedItems = new ConcurrentQueue(); - - private readonly SemaphoreSlim _fetchSemaphore = new SemaphoreSlim(1); - private int _itemsAbove; private int _itemsVisible; - private int _itemsBelow; - - private IEnumerable LoadedItems => Items ?? (IEnumerable)_loadedItems; + private ElementReference _topSpacer; - private int ItemCount => Items?.Count ?? _loadedItems.Count; + private ElementReference _bottomSpacer; - protected ElementReference TopSpacer { get; private set; } + private IVirtualizationHelper? _virtualizationHelper; - protected ElementReference BottomSpacer { get; private set; } + [Inject] + private IVirtualizationService VirtualizationService { get; set; } = default!; - [Parameter] - public ICollection Items { get; set; } = default!; - - [Parameter] - public Func>> ItemsProvider { get; set; } = default!; + /// + /// Gets the total number of items in the collection. + /// + protected abstract int ItemCount { get; } + /// + /// Gets the size (height) of each item in pixels. + /// [Parameter] public float ItemSize { get; set; } - [Parameter] - public int InitialItemsCount { get; set; } - - [Parameter] - public RenderFragment? ChildContent { get; set; } + /// + /// Gets the s representing a range of items. + /// + /// The start index of the range of items. + /// The number of items in the range. + /// The s representing the given range. + protected abstract IEnumerable GetItems(int start, int count); + /// protected override void OnParametersSet() { if (ItemSize <= 0f) { - throw new InvalidOperationException( - $"Parameter '{nameof(ItemSize)}' must be specified and greater than zero."); + throw new InvalidOperationException($"Parameter '{nameof(ItemSize)}' must be specified and greater than zero."); } + } - if (Items != null) + /// + protected override async Task OnAfterRenderAsync(bool firstRender) + { + if (firstRender) { - if (ItemsProvider != null) - { - throw new InvalidOperationException( - $"{GetType()} cannot have both '{nameof(Items)}' and '{nameof(ItemsProvider)}' parameters."); - } + _virtualizationHelper = VirtualizationService.CreateVirtualizationHelper(); + _virtualizationHelper.TopSpacerVisible += OnTopSpacerVisible; + _virtualizationHelper.BottomSpacerVisible += OnBottomSpacerVisible; - _itemsBelow = Items.Count; - } - else if (ItemsProvider != null) - { - _itemsBelow = 0; - } - else - { - throw new InvalidOperationException( - $"{GetType()} requires either the '{nameof(Items)}' or '{nameof(ItemsProvider)}' parameter to " + - $"be specified and non-null."); + await _virtualizationHelper.InitAsync(_topSpacer, _bottomSpacer); } } - protected void UpdateTopSpacer(float spacerSize, float containerSize) + /// + protected override void BuildRenderTree(RenderTreeBuilder builder) { - CalculateSpacerItemDistribution(spacerSize, containerSize, out _itemsAbove, out _itemsBelow); - Console.WriteLine($"Above: {_itemsAbove}, Visible: {_itemsVisible}"); - } + var itemsBelow = Math.Max(0, ItemCount - _itemsVisible - _itemsAbove); - protected void UpdateBottomSpacer(float spacerSize, float containerSize) - { - CalculateSpacerItemDistribution(spacerSize, containerSize, out _itemsBelow, out _itemsAbove); - Console.WriteLine($"Above: {_itemsAbove}, Visible: {_itemsVisible}"); + builder.OpenElement(0, "div"); + builder.AddAttribute(1, "key", "top-spacer"); + builder.AddAttribute(2, "style", GetSpacerStyle(_itemsAbove)); + builder.AddElementReferenceCapture(3, elementReference => _topSpacer = elementReference); + builder.CloseElement(); + + builder.OpenRegion(4); - if (ItemsProvider != null && _itemsAbove + _itemsVisible >= _loadedItems.Count) + foreach (var item in GetItems(_itemsAbove, _itemsVisible)) { - FetchItems(_itemsAbove + _itemsVisible + InitialItemsCount); + item.Invoke(builder); } + + builder.CloseRegion(); + + builder.OpenElement(5, "div"); + builder.AddAttribute(6, "key", "bottom-spacer"); + builder.AddAttribute(7, "style", GetSpacerStyle(itemsBelow)); + builder.AddElementReferenceCapture(8, elementReference => _bottomSpacer = elementReference); + builder.CloseElement(); } - private void CalculateSpacerItemDistribution(float spacerSize, float containerSize, out int itemsInThisSpacer, out int itemsInOtherSpacer) + private void OnTopSpacerVisible(object? sender, SpacerEventArgs e) { - _itemsVisible = Math.Max(0, (int)Math.Ceiling(containerSize / ItemSize) + 2); - itemsInThisSpacer = Math.Max(0, (int)Math.Floor(spacerSize / ItemSize) - 1); - itemsInOtherSpacer = Math.Max(0, ItemCount - itemsInThisSpacer - _itemsVisible); + CalcualteItemDistribution(e, out _itemsVisible, out _itemsAbove); StateHasChanged(); } - private string GetSpacerStyle(int itemsInSpacer) + private void OnBottomSpacerVisible(object? sender, SpacerEventArgs e) { - return $"height: {itemsInSpacer * ItemSize}px;"; - } + CalcualteItemDistribution(e, out _itemsVisible, out var itemsBelow); - private void FetchItems(int newItemCount) - { - var currentScheduler = TaskScheduler.FromCurrentSynchronizationContext(); + _itemsAbove = Math.Max(0, ItemCount - itemsBelow - _itemsVisible); - _fetchSemaphore.WaitAsync().ContinueWith(t => - { - if (_loadedItems.Count >= newItemCount) - { - _fetchSemaphore.Release(); - return; - } - - ItemsProvider(_loadedItems.Count..newItemCount).ContinueWith(t => - { - foreach (var item in t.Result) - { - _loadedItems.Enqueue(item); - } - - StateHasChanged(); - - _fetchSemaphore.Release(); - }, currentScheduler); - }); + StateHasChanged(); } - protected override void BuildRenderTree(RenderTreeBuilder builder) + private void CalcualteItemDistribution(SpacerEventArgs e, out int itemsVisible, out int itemsInSpacer) { - _itemsBelow = Math.Max(1, ItemCount - (_itemsVisible + _itemsAbove)); - - builder.OpenElement(0, "div"); - builder.AddAttribute(1, "key", "top-spacer"); - builder.AddAttribute(2, "style", GetSpacerStyle(_itemsAbove)); - builder.AddElementReferenceCapture(3, elementReference => TopSpacer = elementReference); - builder.CloseElement(); + itemsVisible = Math.Max(0, (int)Math.Ceiling(e.ContainerSize / ItemSize) + 2); + itemsInSpacer = Math.Max(0, (int)Math.Floor(e.SpacerSize / ItemSize) - 1); + } - builder.OpenRegion(4); + private string GetSpacerStyle(int itemsInSpacer) + { + return $"height: {itemsInSpacer * ItemSize}px;"; + } - if (ChildContent != null) + /// + public async ValueTask DisposeAsync() + { + if (_virtualizationHelper != null) { - foreach (var item in LoadedItems.Skip(_itemsAbove).Take(_itemsVisible)) - { - ChildContent(item)?.Invoke(builder); - } + await _virtualizationHelper.DisposeAsync(); } - - builder.CloseRegion(); - - builder.OpenElement(5, "div"); - builder.AddAttribute(6, "key", "bottom-spacer"); - builder.AddAttribute(7, "style", GetSpacerStyle(_itemsBelow)); - builder.AddElementReferenceCapture(8, elementReference => BottomSpacer = elementReference); - builder.CloseElement(); } } } diff --git a/src/Components/Server/src/DependencyInjection/ComponentServiceCollectionExtensions.cs b/src/Components/Server/src/DependencyInjection/ComponentServiceCollectionExtensions.cs index cd65b7fdc4f1..770ea66a0d00 100644 --- a/src/Components/Server/src/DependencyInjection/ComponentServiceCollectionExtensions.cs +++ b/src/Components/Server/src/DependencyInjection/ComponentServiceCollectionExtensions.cs @@ -9,6 +9,7 @@ using Microsoft.AspNetCore.Components.Server; using Microsoft.AspNetCore.Components.Server.BlazorPack; using Microsoft.AspNetCore.Components.Server.Circuits; +using Microsoft.AspNetCore.Components.Virtualization; using Microsoft.AspNetCore.SignalR.Protocol; using Microsoft.Extensions.DependencyInjection.Extensions; using Microsoft.Extensions.Options; @@ -73,6 +74,7 @@ public static IServerSideBlazorBuilder AddServerSideBlazor(this IServiceCollecti services.AddScoped(); services.AddScoped(); services.AddScoped(); + services.AddScoped(); services.AddScoped(); services.TryAddEnumerable(ServiceDescriptor.Singleton, CircuitOptionsJSInteropDetailedErrorsConfiguration>()); diff --git a/src/Components/Web.JS/src/Virtualize.ts b/src/Components/Web.JS/src/Virtualize.ts index 1a8863e8ed0e..ccc0be929281 100644 --- a/src/Components/Web.JS/src/Virtualize.ts +++ b/src/Components/Web.JS/src/Virtualize.ts @@ -1,3 +1,8 @@ +export const Virtualize = { + init, + dispose, +}; + const observersByDotNetId = {}; function findClosestScrollContainer(element: Element | null): Element | null { @@ -14,7 +19,7 @@ function findClosestScrollContainer(element: Element | null): Element | null { return findClosestScrollContainer(element.parentElement); } -function init(component: any, topSpacer: Element, bottomSpacer: Element, rootMargin = 50): void { +function init(dotNetHelper: any, topSpacer: Element, bottomSpacer: Element, rootMargin = 50): void { const intersectionObserver = new IntersectionObserver(intersectionCallback, { root: findClosestScrollContainer(topSpacer), rootMargin: `${rootMargin}px`, @@ -30,9 +35,10 @@ function init(component: any, topSpacer: Element, bottomSpacer: Element, rootMar intersectionObserver.observe(bottomSpacer); }); - mutationObserver.observe(topSpacer, { attributes: true }); + // Observe the bottom spacer to account for collections that resize. + mutationObserver.observe(bottomSpacer, { attributes: true }); - observersByDotNetId[component._id] = { + observersByDotNetId[dotNetHelper._id] = { intersection: intersectionObserver, mutation: mutationObserver, }; @@ -46,9 +52,9 @@ function init(component: any, topSpacer: Element, bottomSpacer: Element, rootMar const containerSize = entry.rootBounds?.height; if (entry.target === topSpacer) { - component.invokeMethodAsync('OnTopSpacerVisible', entry.intersectionRect.top - entry.boundingClientRect.top, containerSize); + dotNetHelper.invokeMethodAsync('OnTopSpacerVisible', entry.intersectionRect.top - entry.boundingClientRect.top, containerSize); } else if (entry.target === bottomSpacer) { - component.invokeMethodAsync('OnBottomSpacerVisible', entry.boundingClientRect.bottom - entry.intersectionRect.bottom, containerSize); + dotNetHelper.invokeMethodAsync('OnBottomSpacerVisible', entry.boundingClientRect.bottom - entry.intersectionRect.bottom, containerSize); } else { throw new Error('Unknown intersection target'); } @@ -56,20 +62,15 @@ function init(component: any, topSpacer: Element, bottomSpacer: Element, rootMar } } -function dispose(component: any): void { - const observers = observersByDotNetId[component._id]; +function dispose(dotNetHelper: any): void { + const observers = observersByDotNetId[dotNetHelper._id]; if (observers) { observers.intersection.disconnect(); observers.mutation.disconnect(); - component.dispose(); + dotNetHelper.dispose(); - delete observersByDotNetId[component.id]; + delete observersByDotNetId[dotNetHelper._id]; } } - -export const Virtualize = { - init, - dispose, -}; diff --git a/src/Components/Web/ref/Microsoft.AspNetCore.Components.Web.netcoreapp.cs b/src/Components/Web/ref/Microsoft.AspNetCore.Components.Web.netcoreapp.cs new file mode 100644 index 000000000000..052993fafaaf --- /dev/null +++ b/src/Components/Web/ref/Microsoft.AspNetCore.Components.Web.netcoreapp.cs @@ -0,0 +1,498 @@ +// Copyright (c) .NET Foundation. All rights reserved. +// Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information. + +namespace Microsoft.AspNetCore.Components +{ + [System.AttributeUsageAttribute(System.AttributeTargets.Class, AllowMultiple=true, Inherited=true)] + public sealed partial class BindInputElementAttribute : System.Attribute + { + public BindInputElementAttribute(string? type, string? suffix, string? valueAttribute, string? changeAttribute, bool isInvariantCulture, string? format) { } + public string? ChangeAttribute { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } } + public string? Format { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } } + public bool IsInvariantCulture { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } } + public string? Suffix { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } } + public string? Type { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } } + public string? ValueAttribute { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } } + } + public static partial class ElementReferenceExtensions + { + public static System.Threading.Tasks.ValueTask FocusAsync(this Microsoft.AspNetCore.Components.ElementReference elementReference) { throw null; } + } + public partial class WebElementReferenceContext : Microsoft.AspNetCore.Components.ElementReferenceContext + { + public WebElementReferenceContext(Microsoft.JSInterop.IJSRuntime jsRuntime) { } + } +} +namespace Microsoft.AspNetCore.Components.Forms +{ + public static partial class EditContextFieldClassExtensions + { + public static string FieldCssClass(this Microsoft.AspNetCore.Components.Forms.EditContext editContext, in Microsoft.AspNetCore.Components.Forms.FieldIdentifier fieldIdentifier) { throw null; } + public static string FieldCssClass(this Microsoft.AspNetCore.Components.Forms.EditContext editContext, System.Linq.Expressions.Expression> accessor) { throw null; } + } + public partial class EditForm : Microsoft.AspNetCore.Components.ComponentBase + { + public EditForm() { } + [Microsoft.AspNetCore.Components.ParameterAttribute(CaptureUnmatchedValues=true)] + public System.Collections.Generic.IReadOnlyDictionary? AdditionalAttributes { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } + [Microsoft.AspNetCore.Components.ParameterAttribute] + public Microsoft.AspNetCore.Components.RenderFragment? ChildContent { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } + [Microsoft.AspNetCore.Components.ParameterAttribute] + public Microsoft.AspNetCore.Components.Forms.EditContext? EditContext { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } + [Microsoft.AspNetCore.Components.ParameterAttribute] + public object? Model { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } + [Microsoft.AspNetCore.Components.ParameterAttribute] + public Microsoft.AspNetCore.Components.EventCallback OnInvalidSubmit { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } + [Microsoft.AspNetCore.Components.ParameterAttribute] + public Microsoft.AspNetCore.Components.EventCallback OnSubmit { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } + [Microsoft.AspNetCore.Components.ParameterAttribute] + public Microsoft.AspNetCore.Components.EventCallback OnValidSubmit { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } + protected override void BuildRenderTree(Microsoft.AspNetCore.Components.Rendering.RenderTreeBuilder builder) { } + protected override void OnParametersSet() { } + } + public abstract partial class InputBase : Microsoft.AspNetCore.Components.ComponentBase, System.IDisposable + { + protected InputBase() { } + [Microsoft.AspNetCore.Components.ParameterAttribute(CaptureUnmatchedValues=true)] + public System.Collections.Generic.IReadOnlyDictionary? AdditionalAttributes { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } + protected string CssClass { get { throw null; } } + [System.Diagnostics.CodeAnalysis.MaybeNullAttribute] + [System.Diagnostics.CodeAnalysis.AllowNullAttribute] + protected TValue CurrentValue { get { throw null; } set { } } + protected string? CurrentValueAsString { get { throw null; } set { } } + [Microsoft.AspNetCore.Components.ParameterAttribute] + public string? DisplayName { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } + protected Microsoft.AspNetCore.Components.Forms.EditContext EditContext { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } + protected internal Microsoft.AspNetCore.Components.Forms.FieldIdentifier FieldIdentifier { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } + [Microsoft.AspNetCore.Components.ParameterAttribute] + [System.Diagnostics.CodeAnalysis.MaybeNullAttribute] + [System.Diagnostics.CodeAnalysis.AllowNullAttribute] + public TValue Value { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } + [Microsoft.AspNetCore.Components.ParameterAttribute] + public Microsoft.AspNetCore.Components.EventCallback ValueChanged { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } + [Microsoft.AspNetCore.Components.ParameterAttribute] + public System.Linq.Expressions.Expression>? ValueExpression { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } + protected virtual void Dispose(bool disposing) { } + protected virtual string? FormatValueAsString([System.Diagnostics.CodeAnalysis.AllowNullAttribute] TValue value) { throw null; } + public override System.Threading.Tasks.Task SetParametersAsync(Microsoft.AspNetCore.Components.ParameterView parameters) { throw null; } + void System.IDisposable.Dispose() { } + protected abstract bool TryParseValueFromString(string? value, [System.Diagnostics.CodeAnalysis.MaybeNullAttribute] out TValue result, [System.Diagnostics.CodeAnalysis.NotNullWhenAttribute(false)] out string? validationErrorMessage); + } + public partial class InputCheckbox : Microsoft.AspNetCore.Components.Forms.InputBase + { + public InputCheckbox() { } + protected override void BuildRenderTree(Microsoft.AspNetCore.Components.Rendering.RenderTreeBuilder builder) { } + protected override bool TryParseValueFromString(string? value, out bool result, [System.Diagnostics.CodeAnalysis.NotNullWhenAttribute(false)] out string? validationErrorMessage) { throw null; } + } + public partial class InputDate : Microsoft.AspNetCore.Components.Forms.InputBase + { + public InputDate() { } + [Microsoft.AspNetCore.Components.ParameterAttribute] + public string ParsingErrorMessage { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } + protected override void BuildRenderTree(Microsoft.AspNetCore.Components.Rendering.RenderTreeBuilder builder) { } + protected override string FormatValueAsString([System.Diagnostics.CodeAnalysis.AllowNullAttribute] TValue value) { throw null; } + protected override bool TryParseValueFromString(string? value, [System.Diagnostics.CodeAnalysis.MaybeNullAttribute] out TValue result, [System.Diagnostics.CodeAnalysis.NotNullWhenAttribute(false)] out string? validationErrorMessage) { throw null; } + } + public partial class InputNumber : Microsoft.AspNetCore.Components.Forms.InputBase + { + public InputNumber() { } + [Microsoft.AspNetCore.Components.ParameterAttribute] + public string ParsingErrorMessage { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } + protected override void BuildRenderTree(Microsoft.AspNetCore.Components.Rendering.RenderTreeBuilder builder) { } + protected override string? FormatValueAsString([System.Diagnostics.CodeAnalysis.AllowNullAttribute] TValue value) { throw null; } + protected override bool TryParseValueFromString(string? value, [System.Diagnostics.CodeAnalysis.MaybeNullAttribute] out TValue result, [System.Diagnostics.CodeAnalysis.NotNullWhenAttribute(false)] out string? validationErrorMessage) { throw null; } + } + public partial class InputRadioGroup : Microsoft.AspNetCore.Components.Forms.InputBase + { + public InputRadioGroup() { } + [Microsoft.AspNetCore.Components.ParameterAttribute] + public Microsoft.AspNetCore.Components.RenderFragment? ChildContent { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } + [Microsoft.AspNetCore.Components.ParameterAttribute] + public string? Name { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } + protected override void BuildRenderTree(Microsoft.AspNetCore.Components.Rendering.RenderTreeBuilder builder) { } + protected override void OnParametersSet() { } + protected override bool TryParseValueFromString(string? value, [System.Diagnostics.CodeAnalysis.MaybeNullAttribute] out TValue result, [System.Diagnostics.CodeAnalysis.NotNullWhenAttribute(false)] out string? validationErrorMessage) { throw null; } + } + public partial class InputRadio : Microsoft.AspNetCore.Components.ComponentBase + { + public InputRadio() { } + [Microsoft.AspNetCore.Components.ParameterAttribute(CaptureUnmatchedValues=true)] + public System.Collections.Generic.IReadOnlyDictionary? AdditionalAttributes { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } + [Microsoft.AspNetCore.Components.ParameterAttribute] + public string? Name { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } + [Microsoft.AspNetCore.Components.ParameterAttribute] + [System.Diagnostics.CodeAnalysis.MaybeNullAttribute] + [System.Diagnostics.CodeAnalysis.AllowNullAttribute] + public TValue Value { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } + protected override void BuildRenderTree(Microsoft.AspNetCore.Components.Rendering.RenderTreeBuilder builder) { } + protected override void OnParametersSet() { } + } + public partial class InputSelect : Microsoft.AspNetCore.Components.Forms.InputBase + { + public InputSelect() { } + [Microsoft.AspNetCore.Components.ParameterAttribute] + public Microsoft.AspNetCore.Components.RenderFragment? ChildContent { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } + protected override void BuildRenderTree(Microsoft.AspNetCore.Components.Rendering.RenderTreeBuilder builder) { } + protected override bool TryParseValueFromString(string? value, [System.Diagnostics.CodeAnalysis.MaybeNullAttribute] out TValue result, [System.Diagnostics.CodeAnalysis.NotNullWhenAttribute(false)] out string? validationErrorMessage) { throw null; } + } + public partial class InputText : Microsoft.AspNetCore.Components.Forms.InputBase + { + public InputText() { } + protected override void BuildRenderTree(Microsoft.AspNetCore.Components.Rendering.RenderTreeBuilder builder) { } + protected override bool TryParseValueFromString(string? value, out string? result, [System.Diagnostics.CodeAnalysis.NotNullWhenAttribute(false)] out string? validationErrorMessage) { throw null; } + } + public partial class InputTextArea : Microsoft.AspNetCore.Components.Forms.InputBase + { + public InputTextArea() { } + protected override void BuildRenderTree(Microsoft.AspNetCore.Components.Rendering.RenderTreeBuilder builder) { } + protected override bool TryParseValueFromString(string? value, out string? result, [System.Diagnostics.CodeAnalysis.NotNullWhenAttribute(false)] out string? validationErrorMessage) { throw null; } + } + public partial class ValidationMessage : Microsoft.AspNetCore.Components.ComponentBase, System.IDisposable + { + public ValidationMessage() { } + [Microsoft.AspNetCore.Components.ParameterAttribute(CaptureUnmatchedValues=true)] + public System.Collections.Generic.IReadOnlyDictionary? AdditionalAttributes { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } + [Microsoft.AspNetCore.Components.ParameterAttribute] + public System.Linq.Expressions.Expression>? For { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } + protected override void BuildRenderTree(Microsoft.AspNetCore.Components.Rendering.RenderTreeBuilder builder) { } + protected virtual void Dispose(bool disposing) { } + protected override void OnParametersSet() { } + void System.IDisposable.Dispose() { } + } + public partial class ValidationSummary : Microsoft.AspNetCore.Components.ComponentBase, System.IDisposable + { + public ValidationSummary() { } + [Microsoft.AspNetCore.Components.ParameterAttribute(CaptureUnmatchedValues=true)] + public System.Collections.Generic.IReadOnlyDictionary? AdditionalAttributes { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } + [Microsoft.AspNetCore.Components.ParameterAttribute] + public object? Model { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } + protected override void BuildRenderTree(Microsoft.AspNetCore.Components.Rendering.RenderTreeBuilder builder) { } + protected virtual void Dispose(bool disposing) { } + protected override void OnParametersSet() { } + void System.IDisposable.Dispose() { } + } +} +namespace Microsoft.AspNetCore.Components.RenderTree +{ + public sealed partial class WebEventDescriptor + { + public WebEventDescriptor() { } + public int BrowserRendererId { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } + public string EventArgsType { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } + public Microsoft.AspNetCore.Components.RenderTree.EventFieldInfo? EventFieldInfo { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } + public ulong EventHandlerId { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } + } +} +namespace Microsoft.AspNetCore.Components.Routing +{ + public partial class NavLink : Microsoft.AspNetCore.Components.ComponentBase, System.IDisposable + { + public NavLink() { } + [Microsoft.AspNetCore.Components.ParameterAttribute] + public string? ActiveClass { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } + [Microsoft.AspNetCore.Components.ParameterAttribute(CaptureUnmatchedValues=true)] + public System.Collections.Generic.IReadOnlyDictionary? AdditionalAttributes { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } + [Microsoft.AspNetCore.Components.ParameterAttribute] + public Microsoft.AspNetCore.Components.RenderFragment? ChildContent { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } + protected string? CssClass { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } + [Microsoft.AspNetCore.Components.ParameterAttribute] + public Microsoft.AspNetCore.Components.Routing.NavLinkMatch Match { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } + protected override void BuildRenderTree(Microsoft.AspNetCore.Components.Rendering.RenderTreeBuilder builder) { } + public void Dispose() { } + protected override void OnInitialized() { } + protected override void OnParametersSet() { } + } + public enum NavLinkMatch + { + Prefix = 0, + All = 1, + } +} +namespace Microsoft.AspNetCore.Components.Virtualization +{ + public partial class WebVirtualizationHelper : Microsoft.AspNetCore.Components.Virtualization.IVirtualizationHelper, System.IAsyncDisposable + { + public WebVirtualizationHelper(Microsoft.JSInterop.IJSRuntime jsRuntime) { } + public event System.EventHandler? BottomSpacerVisible { add { } remove { } } + public event System.EventHandler? TopSpacerVisible { add { } remove { } } + [System.Diagnostics.DebuggerStepThroughAttribute] + public System.Threading.Tasks.ValueTask DisposeAsync() { throw null; } + [System.Diagnostics.DebuggerStepThroughAttribute] + public System.Threading.Tasks.ValueTask InitAsync(Microsoft.AspNetCore.Components.ElementReference topSpacer, Microsoft.AspNetCore.Components.ElementReference bottomSpacer) { throw null; } + [Microsoft.JSInterop.JSInvokableAttribute] + public void OnBottomSpacerVisible(float spacerSize, float containerSize) { } + [Microsoft.JSInterop.JSInvokableAttribute] + public void OnTopSpacerVisible(float spacerSize, float containerSize) { } + } + public partial class WebVirtualizationService : Microsoft.AspNetCore.Components.Virtualization.IVirtualizationService + { + public WebVirtualizationService(Microsoft.JSInterop.IJSRuntime jsRuntime) { } + public Microsoft.AspNetCore.Components.Virtualization.IVirtualizationHelper CreateVirtualizationHelper() { throw null; } + } +} +namespace Microsoft.AspNetCore.Components.Web +{ + [Microsoft.AspNetCore.Components.BindElementAttribute("select", null, "value", "onchange")] + [Microsoft.AspNetCore.Components.BindElementAttribute("textarea", null, "value", "onchange")] + [Microsoft.AspNetCore.Components.BindInputElementAttribute("checkbox", null, "checked", "onchange", false, null)] + [Microsoft.AspNetCore.Components.BindInputElementAttribute("date", "value", "value", "onchange", true, "yyyy-MM-dd")] + [Microsoft.AspNetCore.Components.BindInputElementAttribute("date", null, "value", "onchange", true, "yyyy-MM-dd")] + [Microsoft.AspNetCore.Components.BindInputElementAttribute("datetime-local", "value", "value", "onchange", true, "yyyy-MM-ddTHH:mm:ss")] + [Microsoft.AspNetCore.Components.BindInputElementAttribute("datetime-local", null, "value", "onchange", true, "yyyy-MM-ddTHH:mm:ss")] + [Microsoft.AspNetCore.Components.BindInputElementAttribute("month", "value", "value", "onchange", true, "yyyy-MM")] + [Microsoft.AspNetCore.Components.BindInputElementAttribute("month", null, "value", "onchange", true, "yyyy-MM")] + [Microsoft.AspNetCore.Components.BindInputElementAttribute("number", "value", "value", "onchange", true, null)] + [Microsoft.AspNetCore.Components.BindInputElementAttribute("number", null, "value", "onchange", true, null)] + [Microsoft.AspNetCore.Components.BindInputElementAttribute("text", null, "value", "onchange", false, null)] + [Microsoft.AspNetCore.Components.BindInputElementAttribute("time", "value", "value", "onchange", true, "HH:mm:ss")] + [Microsoft.AspNetCore.Components.BindInputElementAttribute("time", null, "value", "onchange", true, "HH:mm:ss")] + [Microsoft.AspNetCore.Components.BindInputElementAttribute(null, "value", "value", "onchange", false, null)] + [Microsoft.AspNetCore.Components.BindInputElementAttribute(null, null, "value", "onchange", false, null)] + public static partial class BindAttributes + { + } + public partial class ClipboardEventArgs : System.EventArgs + { + public ClipboardEventArgs() { } + public string Type { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } + } + public partial class DataTransfer + { + public DataTransfer() { } + public string DropEffect { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } + public string? EffectAllowed { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } + public string[] Files { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } + public Microsoft.AspNetCore.Components.Web.DataTransferItem[] Items { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } + public string[] Types { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } + } + public partial class DataTransferItem + { + public DataTransferItem() { } + public string Kind { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } + public string Type { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } + } + public partial class DragEventArgs : Microsoft.AspNetCore.Components.Web.MouseEventArgs + { + public DragEventArgs() { } + public Microsoft.AspNetCore.Components.Web.DataTransfer DataTransfer { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } + } + public partial class ErrorEventArgs : System.EventArgs + { + public ErrorEventArgs() { } + public int Colno { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } + public string? Filename { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } + public int Lineno { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } + public string? Message { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } + public string? Type { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } + } + [Microsoft.AspNetCore.Components.EventHandlerAttribute("onabort", typeof(Microsoft.AspNetCore.Components.Web.ProgressEventArgs), true, true)] + [Microsoft.AspNetCore.Components.EventHandlerAttribute("onactivate", typeof(System.EventArgs), true, true)] + [Microsoft.AspNetCore.Components.EventHandlerAttribute("onbeforeactivate", typeof(System.EventArgs), true, true)] + [Microsoft.AspNetCore.Components.EventHandlerAttribute("onbeforecopy", typeof(System.EventArgs), true, true)] + [Microsoft.AspNetCore.Components.EventHandlerAttribute("onbeforecut", typeof(System.EventArgs), true, true)] + [Microsoft.AspNetCore.Components.EventHandlerAttribute("onbeforedeactivate", typeof(System.EventArgs), true, true)] + [Microsoft.AspNetCore.Components.EventHandlerAttribute("onbeforepaste", typeof(System.EventArgs), true, true)] + [Microsoft.AspNetCore.Components.EventHandlerAttribute("onblur", typeof(Microsoft.AspNetCore.Components.Web.FocusEventArgs), true, true)] + [Microsoft.AspNetCore.Components.EventHandlerAttribute("oncanplay", typeof(System.EventArgs), true, true)] + [Microsoft.AspNetCore.Components.EventHandlerAttribute("oncanplaythrough", typeof(System.EventArgs), true, true)] + [Microsoft.AspNetCore.Components.EventHandlerAttribute("onchange", typeof(Microsoft.AspNetCore.Components.ChangeEventArgs), true, true)] + [Microsoft.AspNetCore.Components.EventHandlerAttribute("onclick", typeof(Microsoft.AspNetCore.Components.Web.MouseEventArgs), true, true)] + [Microsoft.AspNetCore.Components.EventHandlerAttribute("oncontextmenu", typeof(Microsoft.AspNetCore.Components.Web.MouseEventArgs), true, true)] + [Microsoft.AspNetCore.Components.EventHandlerAttribute("oncopy", typeof(Microsoft.AspNetCore.Components.Web.ClipboardEventArgs), true, true)] + [Microsoft.AspNetCore.Components.EventHandlerAttribute("oncuechange", typeof(System.EventArgs), true, true)] + [Microsoft.AspNetCore.Components.EventHandlerAttribute("oncut", typeof(Microsoft.AspNetCore.Components.Web.ClipboardEventArgs), true, true)] + [Microsoft.AspNetCore.Components.EventHandlerAttribute("ondblclick", typeof(Microsoft.AspNetCore.Components.Web.MouseEventArgs), true, true)] + [Microsoft.AspNetCore.Components.EventHandlerAttribute("ondeactivate", typeof(System.EventArgs), true, true)] + [Microsoft.AspNetCore.Components.EventHandlerAttribute("ondrag", typeof(Microsoft.AspNetCore.Components.Web.DragEventArgs), true, true)] + [Microsoft.AspNetCore.Components.EventHandlerAttribute("ondragend", typeof(Microsoft.AspNetCore.Components.Web.DragEventArgs), true, true)] + [Microsoft.AspNetCore.Components.EventHandlerAttribute("ondragenter", typeof(Microsoft.AspNetCore.Components.Web.DragEventArgs), true, true)] + [Microsoft.AspNetCore.Components.EventHandlerAttribute("ondragleave", typeof(Microsoft.AspNetCore.Components.Web.DragEventArgs), true, true)] + [Microsoft.AspNetCore.Components.EventHandlerAttribute("ondragover", typeof(Microsoft.AspNetCore.Components.Web.DragEventArgs), true, true)] + [Microsoft.AspNetCore.Components.EventHandlerAttribute("ondragstart", typeof(Microsoft.AspNetCore.Components.Web.DragEventArgs), true, true)] + [Microsoft.AspNetCore.Components.EventHandlerAttribute("ondrop", typeof(Microsoft.AspNetCore.Components.Web.DragEventArgs), true, true)] + [Microsoft.AspNetCore.Components.EventHandlerAttribute("ondurationchange", typeof(System.EventArgs), true, true)] + [Microsoft.AspNetCore.Components.EventHandlerAttribute("onemptied", typeof(System.EventArgs), true, true)] + [Microsoft.AspNetCore.Components.EventHandlerAttribute("onended", typeof(System.EventArgs), true, true)] + [Microsoft.AspNetCore.Components.EventHandlerAttribute("onerror", typeof(Microsoft.AspNetCore.Components.Web.ErrorEventArgs), true, true)] + [Microsoft.AspNetCore.Components.EventHandlerAttribute("onfocus", typeof(Microsoft.AspNetCore.Components.Web.FocusEventArgs), true, true)] + [Microsoft.AspNetCore.Components.EventHandlerAttribute("onfocusin", typeof(Microsoft.AspNetCore.Components.Web.FocusEventArgs), true, true)] + [Microsoft.AspNetCore.Components.EventHandlerAttribute("onfocusout", typeof(Microsoft.AspNetCore.Components.Web.FocusEventArgs), true, true)] + [Microsoft.AspNetCore.Components.EventHandlerAttribute("onfullscreenchange", typeof(System.EventArgs), true, true)] + [Microsoft.AspNetCore.Components.EventHandlerAttribute("onfullscreenerror", typeof(System.EventArgs), true, true)] + [Microsoft.AspNetCore.Components.EventHandlerAttribute("ongotpointercapture", typeof(Microsoft.AspNetCore.Components.Web.PointerEventArgs), true, true)] + [Microsoft.AspNetCore.Components.EventHandlerAttribute("oninput", typeof(Microsoft.AspNetCore.Components.ChangeEventArgs), true, true)] + [Microsoft.AspNetCore.Components.EventHandlerAttribute("oninvalid", typeof(System.EventArgs), true, true)] + [Microsoft.AspNetCore.Components.EventHandlerAttribute("onkeydown", typeof(Microsoft.AspNetCore.Components.Web.KeyboardEventArgs), true, true)] + [Microsoft.AspNetCore.Components.EventHandlerAttribute("onkeypress", typeof(Microsoft.AspNetCore.Components.Web.KeyboardEventArgs), true, true)] + [Microsoft.AspNetCore.Components.EventHandlerAttribute("onkeyup", typeof(Microsoft.AspNetCore.Components.Web.KeyboardEventArgs), true, true)] + [Microsoft.AspNetCore.Components.EventHandlerAttribute("onload", typeof(Microsoft.AspNetCore.Components.Web.ProgressEventArgs), true, true)] + [Microsoft.AspNetCore.Components.EventHandlerAttribute("onloadeddata", typeof(System.EventArgs), true, true)] + [Microsoft.AspNetCore.Components.EventHandlerAttribute("onloadedmetadata", typeof(System.EventArgs), true, true)] + [Microsoft.AspNetCore.Components.EventHandlerAttribute("onloadend", typeof(Microsoft.AspNetCore.Components.Web.ProgressEventArgs), true, true)] + [Microsoft.AspNetCore.Components.EventHandlerAttribute("onloadstart", typeof(Microsoft.AspNetCore.Components.Web.ProgressEventArgs), true, true)] + [Microsoft.AspNetCore.Components.EventHandlerAttribute("onlostpointercapture", typeof(Microsoft.AspNetCore.Components.Web.PointerEventArgs), true, true)] + [Microsoft.AspNetCore.Components.EventHandlerAttribute("onmousedown", typeof(Microsoft.AspNetCore.Components.Web.MouseEventArgs), true, true)] + [Microsoft.AspNetCore.Components.EventHandlerAttribute("onmousemove", typeof(Microsoft.AspNetCore.Components.Web.MouseEventArgs), true, true)] + [Microsoft.AspNetCore.Components.EventHandlerAttribute("onmouseout", typeof(Microsoft.AspNetCore.Components.Web.MouseEventArgs), true, true)] + [Microsoft.AspNetCore.Components.EventHandlerAttribute("onmouseover", typeof(Microsoft.AspNetCore.Components.Web.MouseEventArgs), true, true)] + [Microsoft.AspNetCore.Components.EventHandlerAttribute("onmouseup", typeof(Microsoft.AspNetCore.Components.Web.MouseEventArgs), true, true)] + [Microsoft.AspNetCore.Components.EventHandlerAttribute("onmousewheel", typeof(Microsoft.AspNetCore.Components.Web.WheelEventArgs), true, true)] + [Microsoft.AspNetCore.Components.EventHandlerAttribute("onpaste", typeof(Microsoft.AspNetCore.Components.Web.ClipboardEventArgs), true, true)] + [Microsoft.AspNetCore.Components.EventHandlerAttribute("onpause", typeof(System.EventArgs), true, true)] + [Microsoft.AspNetCore.Components.EventHandlerAttribute("onplay", typeof(System.EventArgs), true, true)] + [Microsoft.AspNetCore.Components.EventHandlerAttribute("onplaying", typeof(System.EventArgs), true, true)] + [Microsoft.AspNetCore.Components.EventHandlerAttribute("onpointercancel", typeof(Microsoft.AspNetCore.Components.Web.PointerEventArgs), true, true)] + [Microsoft.AspNetCore.Components.EventHandlerAttribute("onpointerdown", typeof(Microsoft.AspNetCore.Components.Web.PointerEventArgs), true, true)] + [Microsoft.AspNetCore.Components.EventHandlerAttribute("onpointerenter", typeof(Microsoft.AspNetCore.Components.Web.PointerEventArgs), true, true)] + [Microsoft.AspNetCore.Components.EventHandlerAttribute("onpointerleave", typeof(Microsoft.AspNetCore.Components.Web.PointerEventArgs), true, true)] + [Microsoft.AspNetCore.Components.EventHandlerAttribute("onpointerlockchange", typeof(System.EventArgs), true, true)] + [Microsoft.AspNetCore.Components.EventHandlerAttribute("onpointerlockerror", typeof(System.EventArgs), true, true)] + [Microsoft.AspNetCore.Components.EventHandlerAttribute("onpointermove", typeof(Microsoft.AspNetCore.Components.Web.PointerEventArgs), true, true)] + [Microsoft.AspNetCore.Components.EventHandlerAttribute("onpointerout", typeof(Microsoft.AspNetCore.Components.Web.PointerEventArgs), true, true)] + [Microsoft.AspNetCore.Components.EventHandlerAttribute("onpointerover", typeof(Microsoft.AspNetCore.Components.Web.PointerEventArgs), true, true)] + [Microsoft.AspNetCore.Components.EventHandlerAttribute("onpointerup", typeof(Microsoft.AspNetCore.Components.Web.PointerEventArgs), true, true)] + [Microsoft.AspNetCore.Components.EventHandlerAttribute("onprogress", typeof(Microsoft.AspNetCore.Components.Web.ProgressEventArgs), true, true)] + [Microsoft.AspNetCore.Components.EventHandlerAttribute("onratechange", typeof(System.EventArgs), true, true)] + [Microsoft.AspNetCore.Components.EventHandlerAttribute("onreadystatechange", typeof(System.EventArgs), true, true)] + [Microsoft.AspNetCore.Components.EventHandlerAttribute("onreset", typeof(System.EventArgs), true, true)] + [Microsoft.AspNetCore.Components.EventHandlerAttribute("onscroll", typeof(System.EventArgs), true, true)] + [Microsoft.AspNetCore.Components.EventHandlerAttribute("onseeked", typeof(System.EventArgs), true, true)] + [Microsoft.AspNetCore.Components.EventHandlerAttribute("onseeking", typeof(System.EventArgs), true, true)] + [Microsoft.AspNetCore.Components.EventHandlerAttribute("onselect", typeof(System.EventArgs), true, true)] + [Microsoft.AspNetCore.Components.EventHandlerAttribute("onselectionchange", typeof(System.EventArgs), true, true)] + [Microsoft.AspNetCore.Components.EventHandlerAttribute("onselectstart", typeof(System.EventArgs), true, true)] + [Microsoft.AspNetCore.Components.EventHandlerAttribute("onstalled", typeof(System.EventArgs), true, true)] + [Microsoft.AspNetCore.Components.EventHandlerAttribute("onstop", typeof(System.EventArgs), true, true)] + [Microsoft.AspNetCore.Components.EventHandlerAttribute("onsubmit", typeof(System.EventArgs), true, true)] + [Microsoft.AspNetCore.Components.EventHandlerAttribute("onsuspend", typeof(System.EventArgs), true, true)] + [Microsoft.AspNetCore.Components.EventHandlerAttribute("ontimeout", typeof(Microsoft.AspNetCore.Components.Web.ProgressEventArgs), true, true)] + [Microsoft.AspNetCore.Components.EventHandlerAttribute("ontimeupdate", typeof(System.EventArgs), true, true)] + [Microsoft.AspNetCore.Components.EventHandlerAttribute("ontouchcancel", typeof(Microsoft.AspNetCore.Components.Web.TouchEventArgs), true, true)] + [Microsoft.AspNetCore.Components.EventHandlerAttribute("ontouchend", typeof(Microsoft.AspNetCore.Components.Web.TouchEventArgs), true, true)] + [Microsoft.AspNetCore.Components.EventHandlerAttribute("ontouchenter", typeof(Microsoft.AspNetCore.Components.Web.TouchEventArgs), true, true)] + [Microsoft.AspNetCore.Components.EventHandlerAttribute("ontouchleave", typeof(Microsoft.AspNetCore.Components.Web.TouchEventArgs), true, true)] + [Microsoft.AspNetCore.Components.EventHandlerAttribute("ontouchmove", typeof(Microsoft.AspNetCore.Components.Web.TouchEventArgs), true, true)] + [Microsoft.AspNetCore.Components.EventHandlerAttribute("ontouchstart", typeof(Microsoft.AspNetCore.Components.Web.TouchEventArgs), true, true)] + [Microsoft.AspNetCore.Components.EventHandlerAttribute("onvolumechange", typeof(System.EventArgs), true, true)] + [Microsoft.AspNetCore.Components.EventHandlerAttribute("onwaiting", typeof(System.EventArgs), true, true)] + [Microsoft.AspNetCore.Components.EventHandlerAttribute("onwheel", typeof(Microsoft.AspNetCore.Components.Web.WheelEventArgs), true, true)] + public static partial class EventHandlers + { + } + public partial class FocusEventArgs : System.EventArgs + { + public FocusEventArgs() { } + public string? Type { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } + } + public partial class KeyboardEventArgs : System.EventArgs + { + public KeyboardEventArgs() { } + public bool AltKey { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } + public string Code { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } + public bool CtrlKey { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } + public string Key { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } + public float Location { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } + public bool MetaKey { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } + public bool Repeat { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } + public bool ShiftKey { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } + public string Type { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } + } + public partial class MouseEventArgs : System.EventArgs + { + public MouseEventArgs() { } + public bool AltKey { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } + public long Button { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } + public long Buttons { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } + public double ClientX { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } + public double ClientY { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } + public bool CtrlKey { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } + public long Detail { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } + public bool MetaKey { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } + public double OffsetX { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } + public double OffsetY { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } + public double ScreenX { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } + public double ScreenY { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } + public bool ShiftKey { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } + public string Type { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } + } + public partial class PointerEventArgs : Microsoft.AspNetCore.Components.Web.MouseEventArgs + { + public PointerEventArgs() { } + public float Height { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } + public bool IsPrimary { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } + public long PointerId { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } + public string PointerType { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } + public float Pressure { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } + public float TiltX { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } + public float TiltY { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } + public float Width { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } + } + public partial class ProgressEventArgs : System.EventArgs + { + public ProgressEventArgs() { } + public bool LengthComputable { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } + public long Loaded { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } + public long Total { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } + public string Type { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } + } + public partial class TouchEventArgs : System.EventArgs + { + public TouchEventArgs() { } + public bool AltKey { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } + public Microsoft.AspNetCore.Components.Web.TouchPoint[] ChangedTouches { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } + public bool CtrlKey { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } + public long Detail { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } + public bool MetaKey { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } + public bool ShiftKey { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } + public Microsoft.AspNetCore.Components.Web.TouchPoint[] TargetTouches { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } + public Microsoft.AspNetCore.Components.Web.TouchPoint[] Touches { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } + public string Type { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } + } + public partial class TouchPoint + { + public TouchPoint() { } + public double ClientX { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } + public double ClientY { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } + public long Identifier { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } + public double PageX { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } + public double PageY { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } + public double ScreenX { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } + public double ScreenY { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } + } + public static partial class WebEventCallbackFactoryEventArgsExtensions + { + public static Microsoft.AspNetCore.Components.EventCallback Create(this Microsoft.AspNetCore.Components.EventCallbackFactory factory, object receiver, System.Action callback) { throw null; } + public static Microsoft.AspNetCore.Components.EventCallback Create(this Microsoft.AspNetCore.Components.EventCallbackFactory factory, object receiver, System.Action callback) { throw null; } + public static Microsoft.AspNetCore.Components.EventCallback Create(this Microsoft.AspNetCore.Components.EventCallbackFactory factory, object receiver, System.Action callback) { throw null; } + public static Microsoft.AspNetCore.Components.EventCallback Create(this Microsoft.AspNetCore.Components.EventCallbackFactory factory, object receiver, System.Action callback) { throw null; } + public static Microsoft.AspNetCore.Components.EventCallback Create(this Microsoft.AspNetCore.Components.EventCallbackFactory factory, object receiver, System.Action callback) { throw null; } + public static Microsoft.AspNetCore.Components.EventCallback Create(this Microsoft.AspNetCore.Components.EventCallbackFactory factory, object receiver, System.Action callback) { throw null; } + public static Microsoft.AspNetCore.Components.EventCallback Create(this Microsoft.AspNetCore.Components.EventCallbackFactory factory, object receiver, System.Action callback) { throw null; } + public static Microsoft.AspNetCore.Components.EventCallback Create(this Microsoft.AspNetCore.Components.EventCallbackFactory factory, object receiver, System.Action callback) { throw null; } + public static Microsoft.AspNetCore.Components.EventCallback Create(this Microsoft.AspNetCore.Components.EventCallbackFactory factory, object receiver, System.Action callback) { throw null; } + public static Microsoft.AspNetCore.Components.EventCallback Create(this Microsoft.AspNetCore.Components.EventCallbackFactory factory, object receiver, System.Action callback) { throw null; } + public static Microsoft.AspNetCore.Components.EventCallback Create(this Microsoft.AspNetCore.Components.EventCallbackFactory factory, object receiver, System.Func callback) { throw null; } + public static Microsoft.AspNetCore.Components.EventCallback Create(this Microsoft.AspNetCore.Components.EventCallbackFactory factory, object receiver, System.Func callback) { throw null; } + public static Microsoft.AspNetCore.Components.EventCallback Create(this Microsoft.AspNetCore.Components.EventCallbackFactory factory, object receiver, System.Func callback) { throw null; } + public static Microsoft.AspNetCore.Components.EventCallback Create(this Microsoft.AspNetCore.Components.EventCallbackFactory factory, object receiver, System.Func callback) { throw null; } + public static Microsoft.AspNetCore.Components.EventCallback Create(this Microsoft.AspNetCore.Components.EventCallbackFactory factory, object receiver, System.Func callback) { throw null; } + public static Microsoft.AspNetCore.Components.EventCallback Create(this Microsoft.AspNetCore.Components.EventCallbackFactory factory, object receiver, System.Func callback) { throw null; } + public static Microsoft.AspNetCore.Components.EventCallback Create(this Microsoft.AspNetCore.Components.EventCallbackFactory factory, object receiver, System.Func callback) { throw null; } + public static Microsoft.AspNetCore.Components.EventCallback Create(this Microsoft.AspNetCore.Components.EventCallbackFactory factory, object receiver, System.Func callback) { throw null; } + public static Microsoft.AspNetCore.Components.EventCallback Create(this Microsoft.AspNetCore.Components.EventCallbackFactory factory, object receiver, System.Func callback) { throw null; } + public static Microsoft.AspNetCore.Components.EventCallback Create(this Microsoft.AspNetCore.Components.EventCallbackFactory factory, object receiver, System.Func callback) { throw null; } + } + public static partial class WebRenderTreeBuilderExtensions + { + public static void AddEventPreventDefaultAttribute(this Microsoft.AspNetCore.Components.Rendering.RenderTreeBuilder builder, int sequence, string eventName, bool value) { } + public static void AddEventStopPropagationAttribute(this Microsoft.AspNetCore.Components.Rendering.RenderTreeBuilder builder, int sequence, string eventName, bool value) { } + } + public partial class WheelEventArgs : Microsoft.AspNetCore.Components.Web.MouseEventArgs + { + public WheelEventArgs() { } + public long DeltaMode { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } + public double DeltaX { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } + public double DeltaY { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } + public double DeltaZ { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } + } +} diff --git a/src/Components/Web/src/Virtualization/Virtualize.cs b/src/Components/Web/src/Virtualization/Virtualize.cs deleted file mode 100644 index 00080565323e..000000000000 --- a/src/Components/Web/src/Virtualization/Virtualize.cs +++ /dev/null @@ -1,43 +0,0 @@ -using System; -using System.Threading.Tasks; -using Microsoft.JSInterop; - -namespace Microsoft.AspNetCore.Components.Virtualization -{ - public class Virtualize : VirtualizeBase, IDisposable - { - private DotNetObjectReference>? _selfReference; - - [Inject] - private IJSRuntime JSRuntime { get; set; } = default!; - - protected override async Task OnAfterRenderAsync(bool firstRender) - { - if (firstRender) - { - _selfReference = DotNetObjectReference.Create(this); - await JSRuntime.InvokeVoidAsync("Blazor._internal.Virtualize.init", _selfReference, TopSpacer, BottomSpacer); - } - } - - [JSInvokable] - public void OnTopSpacerVisible(float spacerSize, float containerSize) - { - UpdateTopSpacer(spacerSize, containerSize); - } - - [JSInvokable] - public void OnBottomSpacerVisible(float spacerSize, float containerSize) - { - UpdateBottomSpacer(spacerSize, containerSize); - } - - public void Dispose() - { - if (_selfReference != null) - { - _ = JSRuntime.InvokeVoidAsync("Blazor._internal.Virtualize.dispose", _selfReference); - } - } - } -} diff --git a/src/Components/Web/src/Virtualization/WebVirtualizationHelper.cs b/src/Components/Web/src/Virtualization/WebVirtualizationHelper.cs new file mode 100644 index 000000000000..8c39a4b3f634 --- /dev/null +++ b/src/Components/Web/src/Virtualization/WebVirtualizationHelper.cs @@ -0,0 +1,71 @@ +// Copyright (c) .NET Foundation. All rights reserved. +// Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information. + +using System; +using System.Threading.Tasks; +using Microsoft.JSInterop; + +namespace Microsoft.AspNetCore.Components.Virtualization +{ + /// + /// Provides functionality for detecting and relaying virtualization events on the web. + /// + public class WebVirtualizationHelper : IVirtualizationHelper + { + private readonly IJSRuntime _jsRuntime; + + private readonly DotNetObjectReference _selfReference; + + /// + public event EventHandler? TopSpacerVisible; + + /// + public event EventHandler? BottomSpacerVisible; + + /// + /// Instantiates a new instance. + /// + /// The dependency. + public WebVirtualizationHelper(IJSRuntime jsRuntime) + { + _jsRuntime = jsRuntime; + _selfReference = DotNetObjectReference.Create(this); + } + + /// + /// Called when the top spacer becomes visible, invoking . + /// This method is intended to be invoked only from JavaScript. + /// + /// The new top spacer size. + /// The top spacer's container size. + [JSInvokable] + public void OnTopSpacerVisible(float spacerSize, float containerSize) + { + TopSpacerVisible?.Invoke(this, new SpacerEventArgs(spacerSize, containerSize)); + } + + /// + /// Called when the bottom spacer becomes visible, invoking . + /// This method is intended to be invoked only from JavaScript. + /// + /// The new bottom spacer size. + /// The bottom spacer's container size. + [JSInvokable] + public void OnBottomSpacerVisible(float spacerSize, float containerSize) + { + BottomSpacerVisible?.Invoke(this, new SpacerEventArgs(spacerSize, containerSize)); + } + + /// + public async ValueTask InitAsync(ElementReference topSpacer, ElementReference bottomSpacer) + { + await _jsRuntime.InvokeVoidAsync("Blazor._internal.Virtualize.init", _selfReference, topSpacer, bottomSpacer); + } + + /// + public async ValueTask DisposeAsync() + { + await _jsRuntime.InvokeVoidAsync("Blazor._internal.Virtualize.dispose", _selfReference); + } + } +} diff --git a/src/Components/Web/src/Virtualization/WebVirtualizationService.cs b/src/Components/Web/src/Virtualization/WebVirtualizationService.cs new file mode 100644 index 000000000000..5694cac20c17 --- /dev/null +++ b/src/Components/Web/src/Virtualization/WebVirtualizationService.cs @@ -0,0 +1,28 @@ +// Copyright (c) .NET Foundation. All rights reserved. +// Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information. + +using Microsoft.JSInterop; + +namespace Microsoft.AspNetCore.Components.Virtualization +{ + /// + /// A service that provides web-specific virtualization helpers. + /// + public class WebVirtualizationService : IVirtualizationService + { + private readonly IJSRuntime _jsRuntime; + + /// + /// Instantiates a new instance. + /// + /// The dependency. + public WebVirtualizationService(IJSRuntime jsRuntime) + { + _jsRuntime = jsRuntime; + } + + /// + public IVirtualizationHelper CreateVirtualizationHelper() + => new WebVirtualizationHelper(_jsRuntime); + } +} diff --git a/src/Components/WebAssembly/WebAssembly/src/Hosting/WebAssemblyHostBuilder.cs b/src/Components/WebAssembly/WebAssembly/src/Hosting/WebAssemblyHostBuilder.cs index 02477205502c..b5a5ff4754e7 100644 --- a/src/Components/WebAssembly/WebAssembly/src/Hosting/WebAssemblyHostBuilder.cs +++ b/src/Components/WebAssembly/WebAssembly/src/Hosting/WebAssemblyHostBuilder.cs @@ -12,6 +12,7 @@ using Microsoft.Extensions.DependencyInjection; using Microsoft.Extensions.Logging; using Microsoft.JSInterop; +using Microsoft.AspNetCore.Components.Virtualization; namespace Microsoft.AspNetCore.Components.WebAssembly.Hosting { @@ -189,6 +190,7 @@ internal void InitializeDefaultServices() Services.AddSingleton(DefaultWebAssemblyJSRuntime.Instance); Services.AddSingleton(WebAssemblyNavigationManager.Instance); Services.AddSingleton(WebAssemblyNavigationInterception.Instance); + Services.AddSingleton(); Services.AddSingleton(provider => new LazyAssemblyLoader(provider)); Services.AddLogging(builder => { builder.AddProvider(new WebAssemblyConsoleLoggerProvider(DefaultWebAssemblyJSRuntime.Instance)); diff --git a/src/Components/test/testassets/BasicTestApp/VirtualizationComponent.razor b/src/Components/test/testassets/BasicTestApp/VirtualizationComponent.razor index 2534a4c673b0..07ec25088cab 100644 --- a/src/Components/test/testassets/BasicTestApp/VirtualizationComponent.razor +++ b/src/Components/test/testassets/BasicTestApp/VirtualizationComponent.razor @@ -20,9 +20,16 @@

Async items:

- -
Item @context
- + + +
Item @context
+ + +
+ Loading... +
+ +

@@ -39,7 +46,7 @@ @code { float itemSize = 100; Random rng = new Random(); - ICollection Items = Enumerable.Range(1, 1000).ToList(); + ICollection Items = Enumerable.Range(0, 1000).ToList(); Task> GetItems(Range range) { From 9d668c508915b5dcdf6903e9c36e89ab0b28e660 Mon Sep 17 00:00:00 2001 From: Mackinnon Buck Date: Tue, 21 Jul 2020 19:41:50 -0700 Subject: [PATCH 04/21] Fixed rebase issues. --- AspNetCore.sln | 101 ++- ...rosoft.AspNetCore.Components.netcoreapp.cs | 646 ------------------ .../Web.JS/dist/Release/blazor.server.js | 8 +- .../Web.JS/dist/Release/blazor.webassembly.js | 2 +- ...ft.AspNetCore.Components.Web.netcoreapp.cs | 498 -------------- 5 files changed, 98 insertions(+), 1157 deletions(-) delete mode 100644 src/Components/Components/ref/Microsoft.AspNetCore.Components.netcoreapp.cs delete mode 100644 src/Components/Web/ref/Microsoft.AspNetCore.Components.Web.netcoreapp.cs diff --git a/AspNetCore.sln b/AspNetCore.sln index 3db9d70b808e..343e8c51df43 100644 --- a/AspNetCore.sln +++ b/AspNetCore.sln @@ -1429,21 +1429,27 @@ Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Microsoft.AspNetCore.Compon EndProject Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "Sdk", "Sdk", "{FED4267E-E5E4-49C5-98DB-8B3F203596EE}" EndProject -Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Microsoft.NET.Sdk.BlazorWebAssembly", "src\Components\WebAssembly\Sdk\src\Microsoft.NET.Sdk.BlazorWebAssembly.csproj", "{6B2734BF-C61D-4889-ABBF-456A4075D59B}" -Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "BasicTestApp", "src\Components\test\testassets\BasicTestApp\BasicTestApp.csproj", "{46FB7E93-1294-4068-B80A-D4864F78277A}" +Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Microsoft.NET.Sdk.BlazorWebAssembly", "src\Components\WebAssembly\Sdk\src\Microsoft.NET.Sdk.BlazorWebAssembly.csproj", "{6B2734BF-C61D-4889-ABBF-456A4075D59B}" EndProject -Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Microsoft.NET.Sdk.BlazorWebAssembly.Tests", "src\Components\WebAssembly\Sdk\test\Microsoft.NET.Sdk.BlazorWebAssembly.Tests.csproj", "{83371889-9A3E-4D16-AE77-EB4F83BC6374}" +Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Microsoft.NET.Sdk.BlazorWebAssembly.Tests", "src\Components\WebAssembly\Sdk\test\Microsoft.NET.Sdk.BlazorWebAssembly.Tests.csproj", "{83371889-9A3E-4D16-AE77-EB4F83BC6374}" EndProject -Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Microsoft.NET.Sdk.BlazorWebAssembly.IntegrationTests", "src\Components\WebAssembly\Sdk\integrationtests\Microsoft.NET.Sdk.BlazorWebAssembly.IntegrationTests.csproj", "{525EBCB4-A870-470B-BC90-845306C337D1}" +Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Microsoft.NET.Sdk.BlazorWebAssembly.IntegrationTests", "src\Components\WebAssembly\Sdk\integrationtests\Microsoft.NET.Sdk.BlazorWebAssembly.IntegrationTests.csproj", "{525EBCB4-A870-470B-BC90-845306C337D1}" EndProject Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Microsoft.NET.Sdk.BlazorWebAssembly.Tools", "src\Components\WebAssembly\Sdk\tools\Microsoft.NET.Sdk.BlazorWebAssembly.Tools.csproj", "{175E5CD8-92D4-46BB-882E-3A930D3302D4}" -Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "ComponentsApp.Server", "src\Components\test\testassets\ComponentsApp.Server\ComponentsApp.Server.csproj", "{19974360-4A63-425A-94DB-C2C940A3A97A}" EndProject -Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "LazyTestContentPackage", "src\Components\test\testassets\LazyTestContentPackage\LazyTestContentPackage.csproj", "{ADF9C126-F322-4E34-AFD3-E626A4487206}" +Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "testassets", "testassets", "{5FC3D1F1-F568-4881-896E-D9F8A6410EA4}" EndProject -Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "TestContentPackage", "src\Components\test\testassets\TestContentPackage\TestContentPackage.csproj", "{3D3C7D9B-E356-4DC6-80B1-3F6D7F15EE31}" +Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "BasicTestApp", "src\Components\test\testassets\BasicTestApp\BasicTestApp.csproj", "{B839D6A6-D841-4867-91AD-6F88692D9904}" EndProject -Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Components.TestServer", "src\Components\test\testassets\TestServer\Components.TestServer.csproj", "{8A59AF88-4A82-46ED-977D-D909001F8107}" +Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "ComponentsApp.App", "src\Components\test\testassets\ComponentsApp.App\ComponentsApp.App.csproj", "{ED20342B-00B7-43D3-9936-0E08FA133D9A}" +EndProject +Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "ComponentsApp.Server", "src\Components\test\testassets\ComponentsApp.Server\ComponentsApp.Server.csproj", "{33DBA034-3867-4934-A84B-A7614B11C851}" +EndProject +Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "LazyTestContentPackage", "src\Components\test\testassets\LazyTestContentPackage\LazyTestContentPackage.csproj", "{1DB0FEEA-3F51-4D3E-9D06-0037C6EDD2F0}" +EndProject +Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "TestContentPackage", "src\Components\test\testassets\TestContentPackage\TestContentPackage.csproj", "{FA11F99F-F9C9-4361-B2D0-C3D98F99674A}" +EndProject +Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Components.TestServer", "src\Components\test\testassets\TestServer\Components.TestServer.csproj", "{85531045-E214-4235-A57A-C1A5752E4B10}" EndProject Global GlobalSection(SolutionConfigurationPlatforms) = preSolution @@ -6795,6 +6801,78 @@ Global {175E5CD8-92D4-46BB-882E-3A930D3302D4}.Release|x64.Build.0 = Release|Any CPU {175E5CD8-92D4-46BB-882E-3A930D3302D4}.Release|x86.ActiveCfg = Release|Any CPU {175E5CD8-92D4-46BB-882E-3A930D3302D4}.Release|x86.Build.0 = Release|Any CPU + {B839D6A6-D841-4867-91AD-6F88692D9904}.Debug|Any CPU.ActiveCfg = Debug|Any CPU + {B839D6A6-D841-4867-91AD-6F88692D9904}.Debug|Any CPU.Build.0 = Debug|Any CPU + {B839D6A6-D841-4867-91AD-6F88692D9904}.Debug|x64.ActiveCfg = Debug|Any CPU + {B839D6A6-D841-4867-91AD-6F88692D9904}.Debug|x64.Build.0 = Debug|Any CPU + {B839D6A6-D841-4867-91AD-6F88692D9904}.Debug|x86.ActiveCfg = Debug|Any CPU + {B839D6A6-D841-4867-91AD-6F88692D9904}.Debug|x86.Build.0 = Debug|Any CPU + {B839D6A6-D841-4867-91AD-6F88692D9904}.Release|Any CPU.ActiveCfg = Release|Any CPU + {B839D6A6-D841-4867-91AD-6F88692D9904}.Release|Any CPU.Build.0 = Release|Any CPU + {B839D6A6-D841-4867-91AD-6F88692D9904}.Release|x64.ActiveCfg = Release|Any CPU + {B839D6A6-D841-4867-91AD-6F88692D9904}.Release|x64.Build.0 = Release|Any CPU + {B839D6A6-D841-4867-91AD-6F88692D9904}.Release|x86.ActiveCfg = Release|Any CPU + {B839D6A6-D841-4867-91AD-6F88692D9904}.Release|x86.Build.0 = Release|Any CPU + {ED20342B-00B7-43D3-9936-0E08FA133D9A}.Debug|Any CPU.ActiveCfg = Debug|Any CPU + {ED20342B-00B7-43D3-9936-0E08FA133D9A}.Debug|Any CPU.Build.0 = Debug|Any CPU + {ED20342B-00B7-43D3-9936-0E08FA133D9A}.Debug|x64.ActiveCfg = Debug|Any CPU + {ED20342B-00B7-43D3-9936-0E08FA133D9A}.Debug|x64.Build.0 = Debug|Any CPU + {ED20342B-00B7-43D3-9936-0E08FA133D9A}.Debug|x86.ActiveCfg = Debug|Any CPU + {ED20342B-00B7-43D3-9936-0E08FA133D9A}.Debug|x86.Build.0 = Debug|Any CPU + {ED20342B-00B7-43D3-9936-0E08FA133D9A}.Release|Any CPU.ActiveCfg = Release|Any CPU + {ED20342B-00B7-43D3-9936-0E08FA133D9A}.Release|Any CPU.Build.0 = Release|Any CPU + {ED20342B-00B7-43D3-9936-0E08FA133D9A}.Release|x64.ActiveCfg = Release|Any CPU + {ED20342B-00B7-43D3-9936-0E08FA133D9A}.Release|x64.Build.0 = Release|Any CPU + {ED20342B-00B7-43D3-9936-0E08FA133D9A}.Release|x86.ActiveCfg = Release|Any CPU + {ED20342B-00B7-43D3-9936-0E08FA133D9A}.Release|x86.Build.0 = Release|Any CPU + {33DBA034-3867-4934-A84B-A7614B11C851}.Debug|Any CPU.ActiveCfg = Debug|Any CPU + {33DBA034-3867-4934-A84B-A7614B11C851}.Debug|Any CPU.Build.0 = Debug|Any CPU + {33DBA034-3867-4934-A84B-A7614B11C851}.Debug|x64.ActiveCfg = Debug|Any CPU + {33DBA034-3867-4934-A84B-A7614B11C851}.Debug|x64.Build.0 = Debug|Any CPU + {33DBA034-3867-4934-A84B-A7614B11C851}.Debug|x86.ActiveCfg = Debug|Any CPU + {33DBA034-3867-4934-A84B-A7614B11C851}.Debug|x86.Build.0 = Debug|Any CPU + {33DBA034-3867-4934-A84B-A7614B11C851}.Release|Any CPU.ActiveCfg = Release|Any CPU + {33DBA034-3867-4934-A84B-A7614B11C851}.Release|Any CPU.Build.0 = Release|Any CPU + {33DBA034-3867-4934-A84B-A7614B11C851}.Release|x64.ActiveCfg = Release|Any CPU + {33DBA034-3867-4934-A84B-A7614B11C851}.Release|x64.Build.0 = Release|Any CPU + {33DBA034-3867-4934-A84B-A7614B11C851}.Release|x86.ActiveCfg = Release|Any CPU + {33DBA034-3867-4934-A84B-A7614B11C851}.Release|x86.Build.0 = Release|Any CPU + {1DB0FEEA-3F51-4D3E-9D06-0037C6EDD2F0}.Debug|Any CPU.ActiveCfg = Debug|Any CPU + {1DB0FEEA-3F51-4D3E-9D06-0037C6EDD2F0}.Debug|Any CPU.Build.0 = Debug|Any CPU + {1DB0FEEA-3F51-4D3E-9D06-0037C6EDD2F0}.Debug|x64.ActiveCfg = Debug|Any CPU + {1DB0FEEA-3F51-4D3E-9D06-0037C6EDD2F0}.Debug|x64.Build.0 = Debug|Any CPU + {1DB0FEEA-3F51-4D3E-9D06-0037C6EDD2F0}.Debug|x86.ActiveCfg = Debug|Any CPU + {1DB0FEEA-3F51-4D3E-9D06-0037C6EDD2F0}.Debug|x86.Build.0 = Debug|Any CPU + {1DB0FEEA-3F51-4D3E-9D06-0037C6EDD2F0}.Release|Any CPU.ActiveCfg = Release|Any CPU + {1DB0FEEA-3F51-4D3E-9D06-0037C6EDD2F0}.Release|Any CPU.Build.0 = Release|Any CPU + {1DB0FEEA-3F51-4D3E-9D06-0037C6EDD2F0}.Release|x64.ActiveCfg = Release|Any CPU + {1DB0FEEA-3F51-4D3E-9D06-0037C6EDD2F0}.Release|x64.Build.0 = Release|Any CPU + {1DB0FEEA-3F51-4D3E-9D06-0037C6EDD2F0}.Release|x86.ActiveCfg = Release|Any CPU + {1DB0FEEA-3F51-4D3E-9D06-0037C6EDD2F0}.Release|x86.Build.0 = Release|Any CPU + {FA11F99F-F9C9-4361-B2D0-C3D98F99674A}.Debug|Any CPU.ActiveCfg = Debug|Any CPU + {FA11F99F-F9C9-4361-B2D0-C3D98F99674A}.Debug|Any CPU.Build.0 = Debug|Any CPU + {FA11F99F-F9C9-4361-B2D0-C3D98F99674A}.Debug|x64.ActiveCfg = Debug|Any CPU + {FA11F99F-F9C9-4361-B2D0-C3D98F99674A}.Debug|x64.Build.0 = Debug|Any CPU + {FA11F99F-F9C9-4361-B2D0-C3D98F99674A}.Debug|x86.ActiveCfg = Debug|Any CPU + {FA11F99F-F9C9-4361-B2D0-C3D98F99674A}.Debug|x86.Build.0 = Debug|Any CPU + {FA11F99F-F9C9-4361-B2D0-C3D98F99674A}.Release|Any CPU.ActiveCfg = Release|Any CPU + {FA11F99F-F9C9-4361-B2D0-C3D98F99674A}.Release|Any CPU.Build.0 = Release|Any CPU + {FA11F99F-F9C9-4361-B2D0-C3D98F99674A}.Release|x64.ActiveCfg = Release|Any CPU + {FA11F99F-F9C9-4361-B2D0-C3D98F99674A}.Release|x64.Build.0 = Release|Any CPU + {FA11F99F-F9C9-4361-B2D0-C3D98F99674A}.Release|x86.ActiveCfg = Release|Any CPU + {FA11F99F-F9C9-4361-B2D0-C3D98F99674A}.Release|x86.Build.0 = Release|Any CPU + {85531045-E214-4235-A57A-C1A5752E4B10}.Debug|Any CPU.ActiveCfg = Debug|Any CPU + {85531045-E214-4235-A57A-C1A5752E4B10}.Debug|Any CPU.Build.0 = Debug|Any CPU + {85531045-E214-4235-A57A-C1A5752E4B10}.Debug|x64.ActiveCfg = Debug|Any CPU + {85531045-E214-4235-A57A-C1A5752E4B10}.Debug|x64.Build.0 = Debug|Any CPU + {85531045-E214-4235-A57A-C1A5752E4B10}.Debug|x86.ActiveCfg = Debug|Any CPU + {85531045-E214-4235-A57A-C1A5752E4B10}.Debug|x86.Build.0 = Debug|Any CPU + {85531045-E214-4235-A57A-C1A5752E4B10}.Release|Any CPU.ActiveCfg = Release|Any CPU + {85531045-E214-4235-A57A-C1A5752E4B10}.Release|Any CPU.Build.0 = Release|Any CPU + {85531045-E214-4235-A57A-C1A5752E4B10}.Release|x64.ActiveCfg = Release|Any CPU + {85531045-E214-4235-A57A-C1A5752E4B10}.Release|x64.Build.0 = Release|Any CPU + {85531045-E214-4235-A57A-C1A5752E4B10}.Release|x86.ActiveCfg = Release|Any CPU + {85531045-E214-4235-A57A-C1A5752E4B10}.Release|x86.Build.0 = Release|Any CPU EndGlobalSection GlobalSection(SolutionProperties) = preSolution HideSolutionNode = FALSE @@ -7515,6 +7593,13 @@ Global {83371889-9A3E-4D16-AE77-EB4F83BC6374} = {FED4267E-E5E4-49C5-98DB-8B3F203596EE} {525EBCB4-A870-470B-BC90-845306C337D1} = {FED4267E-E5E4-49C5-98DB-8B3F203596EE} {175E5CD8-92D4-46BB-882E-3A930D3302D4} = {FED4267E-E5E4-49C5-98DB-8B3F203596EE} + {5FC3D1F1-F568-4881-896E-D9F8A6410EA4} = {0508E463-0269-40C9-B5C2-3B600FB2A28B} + {B839D6A6-D841-4867-91AD-6F88692D9904} = {5FC3D1F1-F568-4881-896E-D9F8A6410EA4} + {ED20342B-00B7-43D3-9936-0E08FA133D9A} = {5FC3D1F1-F568-4881-896E-D9F8A6410EA4} + {33DBA034-3867-4934-A84B-A7614B11C851} = {5FC3D1F1-F568-4881-896E-D9F8A6410EA4} + {1DB0FEEA-3F51-4D3E-9D06-0037C6EDD2F0} = {5FC3D1F1-F568-4881-896E-D9F8A6410EA4} + {FA11F99F-F9C9-4361-B2D0-C3D98F99674A} = {5FC3D1F1-F568-4881-896E-D9F8A6410EA4} + {85531045-E214-4235-A57A-C1A5752E4B10} = {5FC3D1F1-F568-4881-896E-D9F8A6410EA4} EndGlobalSection GlobalSection(ExtensibilityGlobals) = postSolution SolutionGuid = {3E8720B3-DBDD-498C-B383-2CC32A054E8F} diff --git a/src/Components/Components/ref/Microsoft.AspNetCore.Components.netcoreapp.cs b/src/Components/Components/ref/Microsoft.AspNetCore.Components.netcoreapp.cs deleted file mode 100644 index eacc22699a97..000000000000 --- a/src/Components/Components/ref/Microsoft.AspNetCore.Components.netcoreapp.cs +++ /dev/null @@ -1,646 +0,0 @@ -// Copyright (c) .NET Foundation. All rights reserved. -// Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information. - -namespace Microsoft.AspNetCore.Components -{ - public static partial class BindConverter - { - public static bool FormatValue(bool value, System.Globalization.CultureInfo? culture = null) { throw null; } - public static string FormatValue(System.DateTime value, System.Globalization.CultureInfo? culture = null) { throw null; } - public static string FormatValue(System.DateTime value, string format, System.Globalization.CultureInfo? culture = null) { throw null; } - public static string FormatValue(System.DateTimeOffset value, System.Globalization.CultureInfo? culture = null) { throw null; } - public static string FormatValue(System.DateTimeOffset value, string format, System.Globalization.CultureInfo? culture = null) { throw null; } - public static string FormatValue(decimal value, System.Globalization.CultureInfo? culture = null) { throw null; } - public static string? FormatValue(double value, System.Globalization.CultureInfo? culture = null) { throw null; } - public static string FormatValue(short value, System.Globalization.CultureInfo? culture = null) { throw null; } - public static string? FormatValue(int value, System.Globalization.CultureInfo? culture = null) { throw null; } - public static string FormatValue(long value, System.Globalization.CultureInfo? culture = null) { throw null; } - public static bool? FormatValue(bool? value, System.Globalization.CultureInfo? culture = null) { throw null; } - public static string? FormatValue(System.DateTimeOffset? value, System.Globalization.CultureInfo? culture = null) { throw null; } - public static string? FormatValue(System.DateTimeOffset? value, string format, System.Globalization.CultureInfo? culture = null) { throw null; } - public static string? FormatValue(System.DateTime? value, System.Globalization.CultureInfo? culture = null) { throw null; } - public static string? FormatValue(System.DateTime? value, string? format, System.Globalization.CultureInfo? culture = null) { throw null; } - public static string? FormatValue(decimal? value, System.Globalization.CultureInfo? culture = null) { throw null; } - public static string? FormatValue(double? value, System.Globalization.CultureInfo? culture = null) { throw null; } - public static string? FormatValue(short? value, System.Globalization.CultureInfo? culture = null) { throw null; } - public static string? FormatValue(int? value, System.Globalization.CultureInfo? culture = null) { throw null; } - public static string? FormatValue(long? value, System.Globalization.CultureInfo? culture = null) { throw null; } - public static string? FormatValue(float? value, System.Globalization.CultureInfo? culture = null) { throw null; } - public static string FormatValue(float value, System.Globalization.CultureInfo? culture = null) { throw null; } - public static string? FormatValue(string? value, System.Globalization.CultureInfo? culture = null) { throw null; } - public static object? FormatValue(T value, System.Globalization.CultureInfo? culture = null) { throw null; } - public static bool TryConvertToBool(object? obj, System.Globalization.CultureInfo? culture, out bool value) { throw null; } - public static bool TryConvertToDateTime(object? obj, System.Globalization.CultureInfo? culture, out System.DateTime value) { throw null; } - public static bool TryConvertToDateTime(object? obj, System.Globalization.CultureInfo? culture, string format, out System.DateTime value) { throw null; } - public static bool TryConvertToDateTimeOffset(object? obj, System.Globalization.CultureInfo? culture, out System.DateTimeOffset value) { throw null; } - public static bool TryConvertToDateTimeOffset(object? obj, System.Globalization.CultureInfo? culture, string format, out System.DateTimeOffset value) { throw null; } - public static bool TryConvertToDecimal(object? obj, System.Globalization.CultureInfo? culture, out decimal value) { throw null; } - public static bool TryConvertToDouble(object? obj, System.Globalization.CultureInfo? culture, out double value) { throw null; } - public static bool TryConvertToFloat(object? obj, System.Globalization.CultureInfo? culture, out float value) { throw null; } - public static bool TryConvertToInt(object? obj, System.Globalization.CultureInfo? culture, out int value) { throw null; } - public static bool TryConvertToLong(object? obj, System.Globalization.CultureInfo? culture, out long value) { throw null; } - public static bool TryConvertToNullableBool(object? obj, System.Globalization.CultureInfo? culture, out bool? value) { throw null; } - public static bool TryConvertToNullableDateTime(object? obj, System.Globalization.CultureInfo? culture, out System.DateTime? value) { throw null; } - public static bool TryConvertToNullableDateTime(object? obj, System.Globalization.CultureInfo? culture, string format, out System.DateTime? value) { throw null; } - public static bool TryConvertToNullableDateTimeOffset(object? obj, System.Globalization.CultureInfo? culture, out System.DateTimeOffset? value) { throw null; } - public static bool TryConvertToNullableDateTimeOffset(object? obj, System.Globalization.CultureInfo? culture, string format, out System.DateTimeOffset? value) { throw null; } - public static bool TryConvertToNullableDecimal(object? obj, System.Globalization.CultureInfo? culture, out decimal? value) { throw null; } - public static bool TryConvertToNullableDouble(object? obj, System.Globalization.CultureInfo? culture, out double? value) { throw null; } - public static bool TryConvertToNullableFloat(object? obj, System.Globalization.CultureInfo? culture, out float? value) { throw null; } - public static bool TryConvertToNullableInt(object? obj, System.Globalization.CultureInfo? culture, out int? value) { throw null; } - public static bool TryConvertToNullableLong(object? obj, System.Globalization.CultureInfo? culture, out long? value) { throw null; } - public static bool TryConvertToNullableShort(object? obj, System.Globalization.CultureInfo? culture, out short? value) { throw null; } - public static bool TryConvertToShort(object? obj, System.Globalization.CultureInfo? culture, out short value) { throw null; } - public static bool TryConvertToString(object? obj, System.Globalization.CultureInfo? culture, out string? value) { throw null; } - public static bool TryConvertTo(object? obj, System.Globalization.CultureInfo? culture, out T value) { throw null; } - } - [System.AttributeUsageAttribute(System.AttributeTargets.Class, AllowMultiple=true, Inherited=true)] - public sealed partial class BindElementAttribute : System.Attribute - { - public BindElementAttribute(string element, string? suffix, string valueAttribute, string changeAttribute) { } - public string ChangeAttribute { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } } - public string Element { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } } - public string? Suffix { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } } - public string ValueAttribute { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } } - } - [System.AttributeUsageAttribute(System.AttributeTargets.Property, AllowMultiple=false, Inherited=true)] - public sealed partial class CascadingParameterAttribute : System.Attribute - { - public CascadingParameterAttribute() { } - public string? Name { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } - } - public partial class CascadingValue : Microsoft.AspNetCore.Components.IComponent - { - public CascadingValue() { } - [Microsoft.AspNetCore.Components.ParameterAttribute] - public Microsoft.AspNetCore.Components.RenderFragment ChildContent { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } - [Microsoft.AspNetCore.Components.ParameterAttribute] - public bool IsFixed { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } - [Microsoft.AspNetCore.Components.ParameterAttribute] - public string? Name { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } - [Microsoft.AspNetCore.Components.ParameterAttribute] - public TValue Value { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } - public void Attach(Microsoft.AspNetCore.Components.RenderHandle renderHandle) { } - public System.Threading.Tasks.Task SetParametersAsync(Microsoft.AspNetCore.Components.ParameterView parameters) { throw null; } - } - public partial class ChangeEventArgs : System.EventArgs - { - public ChangeEventArgs() { } - public object? Value { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } - } - public abstract partial class ComponentBase : Microsoft.AspNetCore.Components.IComponent, Microsoft.AspNetCore.Components.IHandleAfterRender, Microsoft.AspNetCore.Components.IHandleEvent - { - public ComponentBase() { } - protected virtual void BuildRenderTree(Microsoft.AspNetCore.Components.Rendering.RenderTreeBuilder builder) { } - protected System.Threading.Tasks.Task InvokeAsync(System.Action workItem) { throw null; } - protected System.Threading.Tasks.Task InvokeAsync(System.Func workItem) { throw null; } - void Microsoft.AspNetCore.Components.IComponent.Attach(Microsoft.AspNetCore.Components.RenderHandle renderHandle) { } - System.Threading.Tasks.Task Microsoft.AspNetCore.Components.IHandleAfterRender.OnAfterRenderAsync() { throw null; } - System.Threading.Tasks.Task Microsoft.AspNetCore.Components.IHandleEvent.HandleEventAsync(Microsoft.AspNetCore.Components.EventCallbackWorkItem callback, object? arg) { throw null; } - protected virtual void OnAfterRender(bool firstRender) { } - protected virtual System.Threading.Tasks.Task OnAfterRenderAsync(bool firstRender) { throw null; } - protected virtual void OnInitialized() { } - protected virtual System.Threading.Tasks.Task OnInitializedAsync() { throw null; } - protected virtual void OnParametersSet() { } - protected virtual System.Threading.Tasks.Task OnParametersSetAsync() { throw null; } - public virtual System.Threading.Tasks.Task SetParametersAsync(Microsoft.AspNetCore.Components.ParameterView parameters) { throw null; } - protected virtual bool ShouldRender() { throw null; } - protected void StateHasChanged() { } - } - public abstract partial class Dispatcher - { - protected Dispatcher() { } - public void AssertAccess() { } - public abstract bool CheckAccess(); - public static Microsoft.AspNetCore.Components.Dispatcher CreateDefault() { throw null; } - public abstract System.Threading.Tasks.Task InvokeAsync(System.Action workItem); - public abstract System.Threading.Tasks.Task InvokeAsync(System.Func workItem); - public abstract System.Threading.Tasks.Task InvokeAsync(System.Func> workItem); - public abstract System.Threading.Tasks.Task InvokeAsync(System.Func workItem); - protected void OnUnhandledException(System.UnhandledExceptionEventArgs e) { } - } - [System.Runtime.InteropServices.StructLayoutAttribute(System.Runtime.InteropServices.LayoutKind.Sequential)] - public readonly partial struct ElementReference - { - private readonly object _dummy; - private readonly int _dummyPrimitive; - public ElementReference(string id) { throw null; } - public ElementReference(string id, Microsoft.AspNetCore.Components.ElementReferenceContext? context) { throw null; } - public Microsoft.AspNetCore.Components.ElementReferenceContext? Context { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } } - public string Id { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } } - } - public abstract partial class ElementReferenceContext - { - protected ElementReferenceContext() { } - } - [System.Runtime.InteropServices.StructLayoutAttribute(System.Runtime.InteropServices.LayoutKind.Sequential)] - public readonly partial struct EventCallback - { - private readonly object _dummy; - private readonly int _dummyPrimitive; - public static readonly Microsoft.AspNetCore.Components.EventCallback Empty; - public static readonly Microsoft.AspNetCore.Components.EventCallbackFactory Factory; - public EventCallback(Microsoft.AspNetCore.Components.IHandleEvent? receiver, System.MulticastDelegate? @delegate) { throw null; } - public bool HasDelegate { get { throw null; } } - public System.Threading.Tasks.Task InvokeAsync() { throw null; } - public System.Threading.Tasks.Task InvokeAsync(object arg) { throw null; } - } - public sealed partial class EventCallbackFactory - { - public EventCallbackFactory() { } - [System.ComponentModel.EditorBrowsableAttribute(System.ComponentModel.EditorBrowsableState.Never)] - public Microsoft.AspNetCore.Components.EventCallback Create(object receiver, Microsoft.AspNetCore.Components.EventCallback callback) { throw null; } - public Microsoft.AspNetCore.Components.EventCallback Create(object receiver, System.Action callback) { throw null; } - public Microsoft.AspNetCore.Components.EventCallback Create(object receiver, System.Action callback) { throw null; } - public Microsoft.AspNetCore.Components.EventCallback Create(object receiver, System.Func callback) { throw null; } - public Microsoft.AspNetCore.Components.EventCallback Create(object receiver, System.Func callback) { throw null; } - [System.ComponentModel.EditorBrowsableAttribute(System.ComponentModel.EditorBrowsableState.Never)] - public Microsoft.AspNetCore.Components.EventCallback CreateInferred(object receiver, System.Action callback, TValue value) { throw null; } - [System.ComponentModel.EditorBrowsableAttribute(System.ComponentModel.EditorBrowsableState.Never)] - public Microsoft.AspNetCore.Components.EventCallback CreateInferred(object receiver, System.Func callback, TValue value) { throw null; } - [System.ComponentModel.EditorBrowsableAttribute(System.ComponentModel.EditorBrowsableState.Never)] - public Microsoft.AspNetCore.Components.EventCallback Create(object receiver, Microsoft.AspNetCore.Components.EventCallback callback) { throw null; } - [System.ComponentModel.EditorBrowsableAttribute(System.ComponentModel.EditorBrowsableState.Never)] - public Microsoft.AspNetCore.Components.EventCallback Create(object receiver, Microsoft.AspNetCore.Components.EventCallback callback) { throw null; } - public Microsoft.AspNetCore.Components.EventCallback Create(object receiver, System.Action callback) { throw null; } - public Microsoft.AspNetCore.Components.EventCallback Create(object receiver, System.Action callback) { throw null; } - public Microsoft.AspNetCore.Components.EventCallback Create(object receiver, System.Func callback) { throw null; } - public Microsoft.AspNetCore.Components.EventCallback Create(object receiver, System.Func callback) { throw null; } - } - public static partial class EventCallbackFactoryBinderExtensions - { - public static Microsoft.AspNetCore.Components.EventCallback CreateBinder(this Microsoft.AspNetCore.Components.EventCallbackFactory factory, object receiver, System.Action setter, bool existingValue, System.Globalization.CultureInfo? culture = null) { throw null; } - public static Microsoft.AspNetCore.Components.EventCallback CreateBinder(this Microsoft.AspNetCore.Components.EventCallbackFactory factory, object receiver, System.Action setter, System.DateTimeOffset existingValue, System.Globalization.CultureInfo? culture = null) { throw null; } - public static Microsoft.AspNetCore.Components.EventCallback CreateBinder(this Microsoft.AspNetCore.Components.EventCallbackFactory factory, object receiver, System.Action setter, System.DateTimeOffset existingValue, string format, System.Globalization.CultureInfo? culture = null) { throw null; } - public static Microsoft.AspNetCore.Components.EventCallback CreateBinder(this Microsoft.AspNetCore.Components.EventCallbackFactory factory, object receiver, System.Action setter, System.DateTime existingValue, System.Globalization.CultureInfo? culture = null) { throw null; } - public static Microsoft.AspNetCore.Components.EventCallback CreateBinder(this Microsoft.AspNetCore.Components.EventCallbackFactory factory, object receiver, System.Action setter, System.DateTime existingValue, string format, System.Globalization.CultureInfo? culture = null) { throw null; } - public static Microsoft.AspNetCore.Components.EventCallback CreateBinder(this Microsoft.AspNetCore.Components.EventCallbackFactory factory, object receiver, System.Action setter, decimal existingValue, System.Globalization.CultureInfo? culture = null) { throw null; } - public static Microsoft.AspNetCore.Components.EventCallback CreateBinder(this Microsoft.AspNetCore.Components.EventCallbackFactory factory, object receiver, System.Action setter, double existingValue, System.Globalization.CultureInfo? culture = null) { throw null; } - public static Microsoft.AspNetCore.Components.EventCallback CreateBinder(this Microsoft.AspNetCore.Components.EventCallbackFactory factory, object receiver, System.Action setter, short existingValue, System.Globalization.CultureInfo? culture = null) { throw null; } - public static Microsoft.AspNetCore.Components.EventCallback CreateBinder(this Microsoft.AspNetCore.Components.EventCallbackFactory factory, object receiver, System.Action setter, int existingValue, System.Globalization.CultureInfo? culture = null) { throw null; } - public static Microsoft.AspNetCore.Components.EventCallback CreateBinder(this Microsoft.AspNetCore.Components.EventCallbackFactory factory, object receiver, System.Action setter, long existingValue, System.Globalization.CultureInfo? culture = null) { throw null; } - public static Microsoft.AspNetCore.Components.EventCallback CreateBinder(this Microsoft.AspNetCore.Components.EventCallbackFactory factory, object receiver, System.Action setter, bool? existingValue, System.Globalization.CultureInfo? culture = null) { throw null; } - public static Microsoft.AspNetCore.Components.EventCallback CreateBinder(this Microsoft.AspNetCore.Components.EventCallbackFactory factory, object receiver, System.Action setter, System.DateTimeOffset? existingValue, System.Globalization.CultureInfo? culture = null) { throw null; } - public static Microsoft.AspNetCore.Components.EventCallback CreateBinder(this Microsoft.AspNetCore.Components.EventCallbackFactory factory, object receiver, System.Action setter, System.DateTimeOffset? existingValue, string format, System.Globalization.CultureInfo? culture = null) { throw null; } - public static Microsoft.AspNetCore.Components.EventCallback CreateBinder(this Microsoft.AspNetCore.Components.EventCallbackFactory factory, object receiver, System.Action setter, System.DateTime? existingValue, System.Globalization.CultureInfo? culture = null) { throw null; } - public static Microsoft.AspNetCore.Components.EventCallback CreateBinder(this Microsoft.AspNetCore.Components.EventCallbackFactory factory, object receiver, System.Action setter, System.DateTime? existingValue, string format, System.Globalization.CultureInfo? culture = null) { throw null; } - public static Microsoft.AspNetCore.Components.EventCallback CreateBinder(this Microsoft.AspNetCore.Components.EventCallbackFactory factory, object receiver, System.Action setter, decimal? existingValue, System.Globalization.CultureInfo? culture = null) { throw null; } - public static Microsoft.AspNetCore.Components.EventCallback CreateBinder(this Microsoft.AspNetCore.Components.EventCallbackFactory factory, object receiver, System.Action setter, double? existingValue, System.Globalization.CultureInfo? culture = null) { throw null; } - public static Microsoft.AspNetCore.Components.EventCallback CreateBinder(this Microsoft.AspNetCore.Components.EventCallbackFactory factory, object receiver, System.Action setter, short? existingValue, System.Globalization.CultureInfo? culture = null) { throw null; } - public static Microsoft.AspNetCore.Components.EventCallback CreateBinder(this Microsoft.AspNetCore.Components.EventCallbackFactory factory, object receiver, System.Action setter, int? existingValue, System.Globalization.CultureInfo? culture = null) { throw null; } - public static Microsoft.AspNetCore.Components.EventCallback CreateBinder(this Microsoft.AspNetCore.Components.EventCallbackFactory factory, object receiver, System.Action setter, long? existingValue, System.Globalization.CultureInfo? culture = null) { throw null; } - public static Microsoft.AspNetCore.Components.EventCallback CreateBinder(this Microsoft.AspNetCore.Components.EventCallbackFactory factory, object receiver, System.Action setter, float? existingValue, System.Globalization.CultureInfo? culture = null) { throw null; } - public static Microsoft.AspNetCore.Components.EventCallback CreateBinder(this Microsoft.AspNetCore.Components.EventCallbackFactory factory, object receiver, System.Action setter, float existingValue, System.Globalization.CultureInfo? culture = null) { throw null; } - public static Microsoft.AspNetCore.Components.EventCallback CreateBinder(this Microsoft.AspNetCore.Components.EventCallbackFactory factory, object receiver, System.Action setter, string existingValue, System.Globalization.CultureInfo? culture = null) { throw null; } - public static Microsoft.AspNetCore.Components.EventCallback CreateBinder(this Microsoft.AspNetCore.Components.EventCallbackFactory factory, object receiver, System.Action setter, T existingValue, System.Globalization.CultureInfo? culture = null) { throw null; } - } - public static partial class EventCallbackFactoryEventArgsExtensions - { - public static Microsoft.AspNetCore.Components.EventCallback Create(this Microsoft.AspNetCore.Components.EventCallbackFactory factory, object receiver, System.Action callback) { throw null; } - public static Microsoft.AspNetCore.Components.EventCallback Create(this Microsoft.AspNetCore.Components.EventCallbackFactory factory, object receiver, System.Action callback) { throw null; } - public static Microsoft.AspNetCore.Components.EventCallback Create(this Microsoft.AspNetCore.Components.EventCallbackFactory factory, object receiver, System.Func callback) { throw null; } - public static Microsoft.AspNetCore.Components.EventCallback Create(this Microsoft.AspNetCore.Components.EventCallbackFactory factory, object receiver, System.Func callback) { throw null; } - } - [System.Runtime.InteropServices.StructLayoutAttribute(System.Runtime.InteropServices.LayoutKind.Sequential)] - public readonly partial struct EventCallbackWorkItem - { - private readonly object _dummy; - private readonly int _dummyPrimitive; - public static readonly Microsoft.AspNetCore.Components.EventCallbackWorkItem Empty; - public EventCallbackWorkItem(System.MulticastDelegate? @delegate) { throw null; } - public System.Threading.Tasks.Task InvokeAsync(object? arg) { throw null; } - } - [System.Runtime.InteropServices.StructLayoutAttribute(System.Runtime.InteropServices.LayoutKind.Sequential)] - public readonly partial struct EventCallback - { - private readonly object _dummy; - private readonly int _dummyPrimitive; - public static readonly Microsoft.AspNetCore.Components.EventCallback Empty; - public EventCallback(Microsoft.AspNetCore.Components.IHandleEvent? receiver, System.MulticastDelegate? @delegate) { throw null; } - public bool HasDelegate { get { throw null; } } - public System.Threading.Tasks.Task InvokeAsync() { throw null; } - public System.Threading.Tasks.Task InvokeAsync(TValue arg) { throw null; } - } - [System.AttributeUsageAttribute(System.AttributeTargets.Class, AllowMultiple=true, Inherited=true)] - public sealed partial class EventHandlerAttribute : System.Attribute - { - public EventHandlerAttribute(string attributeName, System.Type eventArgsType) { } - public EventHandlerAttribute(string attributeName, System.Type eventArgsType, bool enableStopPropagation, bool enablePreventDefault) { } - public string AttributeName { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } } - public bool EnablePreventDefault { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } } - public bool EnableStopPropagation { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } } - public System.Type EventArgsType { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } } - } - public partial interface IComponent - { - void Attach(Microsoft.AspNetCore.Components.RenderHandle renderHandle); - System.Threading.Tasks.Task SetParametersAsync(Microsoft.AspNetCore.Components.ParameterView parameters); - } - public partial interface IComponentActivator - { - Microsoft.AspNetCore.Components.IComponent CreateInstance(System.Type componentType); - } - public partial interface IHandleAfterRender - { - System.Threading.Tasks.Task OnAfterRenderAsync(); - } - public partial interface IHandleEvent - { - System.Threading.Tasks.Task HandleEventAsync(Microsoft.AspNetCore.Components.EventCallbackWorkItem item, object? arg); - } - [System.AttributeUsageAttribute(System.AttributeTargets.Property, AllowMultiple=false, Inherited=true)] - public sealed partial class InjectAttribute : System.Attribute - { - public InjectAttribute() { } - } - [System.AttributeUsageAttribute(System.AttributeTargets.Class, AllowMultiple=false, Inherited=true)] - public sealed partial class LayoutAttribute : System.Attribute - { - public LayoutAttribute(System.Type layoutType) { } - public System.Type LayoutType { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } } - } - public abstract partial class LayoutComponentBase : Microsoft.AspNetCore.Components.ComponentBase - { - protected LayoutComponentBase() { } - [Microsoft.AspNetCore.Components.ParameterAttribute] - public Microsoft.AspNetCore.Components.RenderFragment? Body { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } - } - public partial class LayoutView : Microsoft.AspNetCore.Components.IComponent - { - public LayoutView() { } - [Microsoft.AspNetCore.Components.ParameterAttribute] - public Microsoft.AspNetCore.Components.RenderFragment ChildContent { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } - [Microsoft.AspNetCore.Components.ParameterAttribute] - public System.Type Layout { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } - public void Attach(Microsoft.AspNetCore.Components.RenderHandle renderHandle) { } - public System.Threading.Tasks.Task SetParametersAsync(Microsoft.AspNetCore.Components.ParameterView parameters) { throw null; } - } - public sealed partial class LocationChangeException : System.Exception - { - public LocationChangeException(string message, System.Exception innerException) { } - } - [System.Runtime.InteropServices.StructLayoutAttribute(System.Runtime.InteropServices.LayoutKind.Sequential)] - public readonly partial struct MarkupString - { - private readonly object _dummy; - private readonly int _dummyPrimitive; - public MarkupString(string value) { throw null; } - public string Value { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } } - public static explicit operator Microsoft.AspNetCore.Components.MarkupString (string value) { throw null; } - public override string ToString() { throw null; } - } - public partial class NavigationException : System.Exception - { - public NavigationException(string uri) { } - public string Location { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } } - } - public abstract partial class NavigationManager - { - protected NavigationManager() { } - public string BaseUri { get { throw null; } protected set { } } - public string Uri { get { throw null; } protected set { } } - public event System.EventHandler LocationChanged { add { } remove { } } - protected virtual void EnsureInitialized() { } - protected void Initialize(string baseUri, string uri) { } - public void NavigateTo(string uri, bool forceLoad = false) { } - protected abstract void NavigateToCore(string uri, bool forceLoad); - protected void NotifyLocationChanged(bool isInterceptedLink) { } - public System.Uri ToAbsoluteUri(string relativeUri) { throw null; } - public string ToBaseRelativePath(string uri) { throw null; } - } - public abstract partial class OwningComponentBase : Microsoft.AspNetCore.Components.ComponentBase, System.IDisposable - { - protected OwningComponentBase() { } - protected bool IsDisposed { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } } - protected System.IServiceProvider ScopedServices { get { throw null; } } - protected virtual void Dispose(bool disposing) { } - void System.IDisposable.Dispose() { } - } - public abstract partial class OwningComponentBase : Microsoft.AspNetCore.Components.OwningComponentBase, System.IDisposable where TService : notnull - { - protected OwningComponentBase() { } - protected TService Service { get { throw null; } } - } - [System.AttributeUsageAttribute(System.AttributeTargets.Property, AllowMultiple=false, Inherited=true)] - public sealed partial class ParameterAttribute : System.Attribute - { - public ParameterAttribute() { } - public bool CaptureUnmatchedValues { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } - } - [System.Runtime.InteropServices.StructLayoutAttribute(System.Runtime.InteropServices.LayoutKind.Sequential)] - public readonly partial struct ParameterValue - { - private readonly object _dummy; - private readonly int _dummyPrimitive; - public bool Cascading { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } } - public string Name { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } } - public object Value { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } } - } - [System.Runtime.InteropServices.StructLayoutAttribute(System.Runtime.InteropServices.LayoutKind.Sequential)] - public readonly partial struct ParameterView - { - private readonly object _dummy; - private readonly int _dummyPrimitive; - public static Microsoft.AspNetCore.Components.ParameterView Empty { get { throw null; } } - public static Microsoft.AspNetCore.Components.ParameterView FromDictionary(System.Collections.Generic.IDictionary parameters) { throw null; } - public Microsoft.AspNetCore.Components.ParameterView.Enumerator GetEnumerator() { throw null; } - [return: System.Diagnostics.CodeAnalysis.MaybeNullAttribute] - public TValue GetValueOrDefault(string parameterName) { throw null; } - public TValue GetValueOrDefault(string parameterName, TValue defaultValue) { throw null; } - public void SetParameterProperties(object target) { } - public System.Collections.Generic.IReadOnlyDictionary ToDictionary() { throw null; } - public bool TryGetValue(string parameterName, [System.Diagnostics.CodeAnalysis.MaybeNullWhenAttribute(false)] out TValue result) { throw null; } - [System.Runtime.InteropServices.StructLayoutAttribute(System.Runtime.InteropServices.LayoutKind.Sequential)] - public partial struct Enumerator - { - private object _dummy; - private int _dummyPrimitive; - public Microsoft.AspNetCore.Components.ParameterValue Current { get { throw null; } } - public bool MoveNext() { throw null; } - } - } - public delegate void RenderFragment(Microsoft.AspNetCore.Components.Rendering.RenderTreeBuilder builder); - public delegate Microsoft.AspNetCore.Components.RenderFragment RenderFragment(TValue value); - [System.Runtime.InteropServices.StructLayoutAttribute(System.Runtime.InteropServices.LayoutKind.Sequential)] - public readonly partial struct RenderHandle - { - private readonly object _dummy; - private readonly int _dummyPrimitive; - public Microsoft.AspNetCore.Components.Dispatcher Dispatcher { get { throw null; } } - public bool IsInitialized { get { throw null; } } - public void Render(Microsoft.AspNetCore.Components.RenderFragment renderFragment) { } - } - [System.AttributeUsageAttribute(System.AttributeTargets.Class, AllowMultiple=true, Inherited=false)] - public sealed partial class RouteAttribute : System.Attribute - { - public RouteAttribute(string template) { } - public string Template { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } } - } - public sealed partial class RouteData - { - public RouteData(System.Type pageType, System.Collections.Generic.IReadOnlyDictionary routeValues) { } - public System.Type PageType { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } } - public System.Collections.Generic.IReadOnlyDictionary RouteValues { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } } - } - public partial class RouteView : Microsoft.AspNetCore.Components.IComponent - { - public RouteView() { } - [Microsoft.AspNetCore.Components.ParameterAttribute] - public System.Type DefaultLayout { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } - [Microsoft.AspNetCore.Components.ParameterAttribute] - public Microsoft.AspNetCore.Components.RouteData RouteData { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } - public void Attach(Microsoft.AspNetCore.Components.RenderHandle renderHandle) { } - protected virtual void Render(Microsoft.AspNetCore.Components.Rendering.RenderTreeBuilder builder) { } - public System.Threading.Tasks.Task SetParametersAsync(Microsoft.AspNetCore.Components.ParameterView parameters) { throw null; } - } -} -namespace Microsoft.AspNetCore.Components.CompilerServices -{ - public static partial class RuntimeHelpers - { - public static Microsoft.AspNetCore.Components.EventCallback CreateInferredEventCallback(object receiver, System.Action callback, T value) { throw null; } - public static Microsoft.AspNetCore.Components.EventCallback CreateInferredEventCallback(object receiver, System.Func callback, T value) { throw null; } - public static T TypeCheck(T value) { throw null; } - } -} -namespace Microsoft.AspNetCore.Components.Rendering -{ - public sealed partial class RenderTreeBuilder : System.IDisposable - { - public RenderTreeBuilder() { } - public void AddAttribute(int sequence, in Microsoft.AspNetCore.Components.RenderTree.RenderTreeFrame frame) { } - public void AddAttribute(int sequence, string name) { } - public void AddAttribute(int sequence, string name, Microsoft.AspNetCore.Components.EventCallback value) { } - public void AddAttribute(int sequence, string name, bool value) { } - public void AddAttribute(int sequence, string name, System.MulticastDelegate? value) { } - public void AddAttribute(int sequence, string name, object? value) { } - public void AddAttribute(int sequence, string name, string? value) { } - public void AddAttribute(int sequence, string name, Microsoft.AspNetCore.Components.EventCallback value) { } - public void AddComponentReferenceCapture(int sequence, System.Action componentReferenceCaptureAction) { } - public void AddContent(int sequence, Microsoft.AspNetCore.Components.MarkupString markupContent) { } - public void AddContent(int sequence, Microsoft.AspNetCore.Components.RenderFragment? fragment) { } - public void AddContent(int sequence, object? textContent) { } - public void AddContent(int sequence, string? textContent) { } - public void AddContent(int sequence, Microsoft.AspNetCore.Components.RenderFragment? fragment, TValue value) { } - public void AddElementReferenceCapture(int sequence, System.Action elementReferenceCaptureAction) { } - public void AddMarkupContent(int sequence, string? markupContent) { } - public void AddMultipleAttributes(int sequence, System.Collections.Generic.IEnumerable>? attributes) { } - public void Clear() { } - public void CloseComponent() { } - public void CloseElement() { } - public void CloseRegion() { } - public Microsoft.AspNetCore.Components.RenderTree.ArrayRange GetFrames() { throw null; } - public void OpenComponent(int sequence, System.Type componentType) { } - public void OpenComponent(int sequence) where TComponent : notnull, Microsoft.AspNetCore.Components.IComponent { } - public void OpenElement(int sequence, string elementName) { } - public void OpenRegion(int sequence) { } - public void SetKey(object? value) { } - public void SetUpdatesAttributeName(string updatesAttributeName) { } - void System.IDisposable.Dispose() { } - } -} -namespace Microsoft.AspNetCore.Components.RenderTree -{ - [System.Runtime.InteropServices.StructLayoutAttribute(System.Runtime.InteropServices.LayoutKind.Sequential)] - public readonly partial struct ArrayBuilderSegment : System.Collections.Generic.IEnumerable, System.Collections.IEnumerable - { - private readonly object _dummy; - private readonly int _dummyPrimitive; - public T[] Array { get { throw null; } } - public int Count { get { throw null; } } - public T this[int index] { get { throw null; } } - public int Offset { get { throw null; } } - System.Collections.Generic.IEnumerator System.Collections.Generic.IEnumerable.GetEnumerator() { throw null; } - System.Collections.IEnumerator System.Collections.IEnumerable.GetEnumerator() { throw null; } - } - [System.Runtime.InteropServices.StructLayoutAttribute(System.Runtime.InteropServices.LayoutKind.Sequential)] - public readonly partial struct ArrayRange - { - public readonly T[] Array; - public readonly int Count; - public ArrayRange(T[] array, int count) { throw null; } - public Microsoft.AspNetCore.Components.RenderTree.ArrayRange Clone() { throw null; } - } - public partial class EventFieldInfo - { - public EventFieldInfo() { } - public int ComponentId { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } - public object FieldValue { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } - } - [System.Runtime.InteropServices.StructLayoutAttribute(System.Runtime.InteropServices.LayoutKind.Sequential)] - public readonly partial struct RenderBatch - { - private readonly object _dummy; - private readonly int _dummyPrimitive; - public Microsoft.AspNetCore.Components.RenderTree.ArrayRange DisposedComponentIDs { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } } - public Microsoft.AspNetCore.Components.RenderTree.ArrayRange DisposedEventHandlerIDs { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } } - public Microsoft.AspNetCore.Components.RenderTree.ArrayRange ReferenceFrames { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } } - public Microsoft.AspNetCore.Components.RenderTree.ArrayRange UpdatedComponents { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } } - } - public abstract partial class Renderer : System.IDisposable - { - public Renderer(System.IServiceProvider serviceProvider, Microsoft.Extensions.Logging.ILoggerFactory loggerFactory) { } - public Renderer(System.IServiceProvider serviceProvider, Microsoft.Extensions.Logging.ILoggerFactory loggerFactory, Microsoft.AspNetCore.Components.IComponentActivator componentActivator) { } - public abstract Microsoft.AspNetCore.Components.Dispatcher Dispatcher { get; } - protected internal Microsoft.AspNetCore.Components.ElementReferenceContext? ElementReferenceContext { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] protected set { } } - public event System.UnhandledExceptionEventHandler UnhandledSynchronizationException { add { } remove { } } - protected internal int AssignRootComponentId(Microsoft.AspNetCore.Components.IComponent component) { throw null; } - public virtual System.Threading.Tasks.Task DispatchEventAsync(ulong eventHandlerId, Microsoft.AspNetCore.Components.RenderTree.EventFieldInfo fieldInfo, System.EventArgs eventArgs) { throw null; } - public void Dispose() { } - protected virtual void Dispose(bool disposing) { } - protected Microsoft.AspNetCore.Components.RenderTree.ArrayRange GetCurrentRenderTreeFrames(int componentId) { throw null; } - protected abstract void HandleException(System.Exception exception); - protected Microsoft.AspNetCore.Components.IComponent InstantiateComponent(System.Type componentType) { throw null; } - protected virtual void ProcessPendingRender() { } - protected System.Threading.Tasks.Task RenderRootComponentAsync(int componentId) { throw null; } - [System.Diagnostics.DebuggerStepThroughAttribute] - protected System.Threading.Tasks.Task RenderRootComponentAsync(int componentId, Microsoft.AspNetCore.Components.ParameterView initialParameters) { throw null; } - protected abstract System.Threading.Tasks.Task UpdateDisplayAsync(in Microsoft.AspNetCore.Components.RenderTree.RenderBatch renderBatch); - } - [System.Runtime.InteropServices.StructLayoutAttribute(System.Runtime.InteropServices.LayoutKind.Sequential)] - public readonly partial struct RenderTreeDiff - { - public readonly int ComponentId; - public readonly Microsoft.AspNetCore.Components.RenderTree.ArrayBuilderSegment Edits; - } - [System.Runtime.InteropServices.StructLayoutAttribute(System.Runtime.InteropServices.LayoutKind.Explicit)] - public readonly partial struct RenderTreeEdit - { - [System.Runtime.InteropServices.FieldOffsetAttribute(8)] - public readonly int MoveToSiblingIndex; - [System.Runtime.InteropServices.FieldOffsetAttribute(8)] - public readonly int ReferenceFrameIndex; - [System.Runtime.InteropServices.FieldOffsetAttribute(16)] - public readonly string RemovedAttributeName; - [System.Runtime.InteropServices.FieldOffsetAttribute(4)] - public readonly int SiblingIndex; - [System.Runtime.InteropServices.FieldOffsetAttribute(0)] - public readonly Microsoft.AspNetCore.Components.RenderTree.RenderTreeEditType Type; - } - public enum RenderTreeEditType - { - PrependFrame = 1, - RemoveFrame = 2, - SetAttribute = 3, - RemoveAttribute = 4, - UpdateText = 5, - StepIn = 6, - StepOut = 7, - UpdateMarkup = 8, - PermutationListEntry = 9, - PermutationListEnd = 10, - } - public enum RenderTreeFrameType : short - { - None = (short)0, - Element = (short)1, - Text = (short)2, - Attribute = (short)3, - Component = (short)4, - Region = (short)5, - ElementReferenceCapture = (short)6, - ComponentReferenceCapture = (short)7, - Markup = (short)8, - } -} -namespace Microsoft.AspNetCore.Components.Routing -{ - public partial interface IHostEnvironmentNavigationManager - { - void Initialize(string baseUri, string uri); - } - public partial interface INavigationInterception - { - System.Threading.Tasks.Task EnableNavigationInterceptionAsync(); - } - public partial class LocationChangedEventArgs : System.EventArgs - { - public LocationChangedEventArgs(string location, bool isNavigationIntercepted) { } - public bool IsNavigationIntercepted { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } } - public string Location { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } } - } - public sealed partial class NavigationContext - { - internal NavigationContext() { } - public System.Threading.CancellationToken CancellationToken { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } } - public string Path { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } } - } - public partial class Router : Microsoft.AspNetCore.Components.IComponent, Microsoft.AspNetCore.Components.IHandleAfterRender, System.IDisposable - { - public Router() { } - [Microsoft.AspNetCore.Components.ParameterAttribute] - public System.Collections.Generic.IEnumerable AdditionalAssemblies { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } - [Microsoft.AspNetCore.Components.ParameterAttribute] - public System.Reflection.Assembly AppAssembly { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } - [Microsoft.AspNetCore.Components.ParameterAttribute] - public Microsoft.AspNetCore.Components.RenderFragment Found { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } - [Microsoft.AspNetCore.Components.ParameterAttribute] - public Microsoft.AspNetCore.Components.RenderFragment Navigating { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } - [Microsoft.AspNetCore.Components.ParameterAttribute] - public Microsoft.AspNetCore.Components.RenderFragment NotFound { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } - [Microsoft.AspNetCore.Components.ParameterAttribute] - public Microsoft.AspNetCore.Components.EventCallback OnNavigateAsync { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } - public void Attach(Microsoft.AspNetCore.Components.RenderHandle renderHandle) { } - public void Dispose() { } - System.Threading.Tasks.Task Microsoft.AspNetCore.Components.IHandleAfterRender.OnAfterRenderAsync() { throw null; } - [System.Diagnostics.DebuggerStepThroughAttribute] - public System.Threading.Tasks.Task SetParametersAsync(Microsoft.AspNetCore.Components.ParameterView parameters) { throw null; } - } -} -namespace Microsoft.AspNetCore.Components.Virtualization -{ - public sealed partial class InfiniteScroll : Microsoft.AspNetCore.Components.Virtualization.VirtualizeBase - { - public InfiniteScroll() { } - [Microsoft.AspNetCore.Components.ParameterAttribute] - public Microsoft.AspNetCore.Components.RenderFragment? InfiniteScrollFooter { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } - [Microsoft.AspNetCore.Components.ParameterAttribute] - public Microsoft.AspNetCore.Components.RenderFragment Item { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } - [Microsoft.AspNetCore.Components.ParameterAttribute] - public int ItemBatchSize { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } - protected override int ItemCount { get { throw null; } } - [Microsoft.AspNetCore.Components.ParameterAttribute] - public System.Func>> ItemsProvider { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } - protected override System.Collections.Generic.IEnumerable GetItems(int start, int count) { throw null; } - } - public partial interface IVirtualizationHelper : System.IAsyncDisposable - { - event System.EventHandler BottomSpacerVisible; - event System.EventHandler TopSpacerVisible; - System.Threading.Tasks.ValueTask InitAsync(Microsoft.AspNetCore.Components.ElementReference topSpacer, Microsoft.AspNetCore.Components.ElementReference bottomSpacer); - } - public partial interface IVirtualizationService - { - Microsoft.AspNetCore.Components.Virtualization.IVirtualizationHelper CreateVirtualizationHelper(); - } - public partial class SpacerEventArgs : System.EventArgs - { - public SpacerEventArgs(float spacerSize, float containerSize) { } - public float ContainerSize { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } } - public float SpacerSize { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } } - } - public abstract partial class VirtualizeBase : Microsoft.AspNetCore.Components.ComponentBase, System.IAsyncDisposable - { - protected VirtualizeBase() { } - protected abstract int ItemCount { get; } - [Microsoft.AspNetCore.Components.ParameterAttribute] - public float ItemSize { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } - protected override void BuildRenderTree(Microsoft.AspNetCore.Components.Rendering.RenderTreeBuilder builder) { } - [System.Diagnostics.DebuggerStepThroughAttribute] - public System.Threading.Tasks.ValueTask DisposeAsync() { throw null; } - protected abstract System.Collections.Generic.IEnumerable GetItems(int start, int count); - [System.Diagnostics.DebuggerStepThroughAttribute] - protected override System.Threading.Tasks.Task OnAfterRenderAsync(bool firstRender) { throw null; } - protected override void OnParametersSet() { } - } - public sealed partial class Virtualize : Microsoft.AspNetCore.Components.Virtualization.VirtualizeBase - { - public Virtualize() { } - [Microsoft.AspNetCore.Components.ParameterAttribute] - public Microsoft.AspNetCore.Components.RenderFragment? 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"+x[n]+".");if(r===P.WebSockets&&!this.options.WebSocket||r===P.ServerSentEvents&&!this.options.EventSource)return this.logger.log(f.a.Debug,"Skipping transport '"+P[r]+"' because it is not supported in your environment.'"),new Error("'"+P[r]+"' is not supported in your environment.");this.logger.log(f.a.Debug,"Selecting transport '"+P[r]+"'.");try{return this.constructTransport(r)}catch(e){return e}},e.prototype.isITransport=function(e){return e&&"object"==typeof e&&"connect"in e},e.prototype.stopConnection=function(e){var t=this;if(this.logger.log(f.a.Debug,"HttpConnection.stopConnection("+e+") called while in state "+this.connectionState+"."),this.transport=void 0,e=this.stopError||e,this.stopError=void 0,"Disconnected"!==this.connectionState){if("Connecting"===this.connectionState)throw this.logger.log(f.a.Warning,"Call to HttpConnection.stopConnection("+e+") was ignored because the connection is still in the connecting state."),new Error("HttpConnection.stopConnection("+e+") was called while the connection is still in the connecting state.");if("Disconnecting"===this.connectionState&&this.stopPromiseResolver(),e?this.logger.log(f.a.Error,"Connection disconnected with error '"+e+"'."):this.logger.log(f.a.Information,"Connection disconnected."),this.sendQueue&&(this.sendQueue.stop().catch((function(e){t.logger.log(f.a.Error,"TransportSendQueue.stop() threw error '"+e+"'.")})),this.sendQueue=void 0),this.connectionId=void 0,this.connectionState="Disconnected",this.connectionStarted){this.connectionStarted=!1;try{this.onclose&&this.onclose(e)}catch(t){this.logger.log(f.a.Error,"HttpConnection.onclose("+e+") threw error '"+t+"'.")}}}else this.logger.log(f.a.Debug,"Call to HttpConnection.stopConnection("+e+") was ignored because the connection is already in the disconnected state.")},e.prototype.resolveUrl=function(e){if(0===e.lastIndexOf("https://",0)||0===e.lastIndexOf("http://",0))return e;if(!h.c.isBrowser||!window.document)throw new Error("Cannot resolve '"+e+"'.");var t=window.document.createElement("a");return t.href=e,this.logger.log(f.a.Information,"Normalizing '"+e+"' to '"+t.href+"'."),t.href},e.prototype.resolveNegotiateUrl=function(e){var t=e.indexOf("?"),n=e.substring(0,-1===t?e.length:t);return"/"!==n[n.length-1]&&(n+="/"),n+="negotiate",-1===(n+=-1===t?"":e.substring(t)).indexOf("negotiateVersion")&&(n+=-1===t?"?":"&",n+="negotiateVersion="+this.negotiateVersion),n},e}();var G=function(){function e(e){this.transport=e,this.buffer=[],this.executing=!0,this.sendBufferedData=new Q,this.transportResult=new Q,this.sendLoopPromise=this.sendLoop()}return e.prototype.send=function(e){return this.bufferData(e),this.transportResult||(this.transportResult=new Q),this.transportResult.promise},e.prototype.stop=function(){return this.executing=!1,this.sendBufferedData.resolve(),this.sendLoopPromise},e.prototype.bufferData=function(e){if(this.buffer.length&&typeof this.buffer[0]!=typeof e)throw new Error("Expected data to be of type 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l.isNode&&(e="User-Agent"),[e,b(c,m(),E(),w())]}function b(e,t,n,r){var o="Microsoft SignalR/",i=e.split(".");return o+=i[0]+"."+i[1],o+=" ("+e+"; ",o+=t&&""!==t?t+"; ":"Unknown OS; ",o+=""+n,o+=r?"; "+r:"; Unknown Runtime Version",o+=")"}function m(){if(!l.isNode)return"";switch(e.platform){case"win32":return"Windows NT";case"darwin":return"macOS";case"linux":return"Linux";default:return e.platform}}function w(){if(l.isNode)return e.versions.node}function E(){return l.isNode?"NodeJS":"Browser"}}).call(this,n(14))},function(e,t,n){"use strict";n.r(t),n.d(t,"AbortError",(function(){return s})),n.d(t,"HttpError",(function(){return i})),n.d(t,"TimeoutError",(function(){return a})),n.d(t,"HttpClient",(function(){return l})),n.d(t,"HttpResponse",(function(){return u})),n.d(t,"DefaultHttpClient",(function(){return S})),n.d(t,"HubConnection",(function(){return O})),n.d(t,"HubConnectionState",(function(){return I})),n.d(t,"HubConnectionBuilder",(function(){return re})),n.d(t,"MessageType",(function(){return b})),n.d(t,"LogLevel",(function(){return f.a})),n.d(t,"HttpTransportType",(function(){return P})),n.d(t,"TransferFormat",(function(){return x})),n.d(t,"NullLogger",(function(){return $.a})),n.d(t,"JsonHubProtocol",(function(){return ee})),n.d(t,"Subject",(function(){return _})),n.d(t,"VERSION",(function(){return h.e}));var r,o=(r=Object.setPrototypeOf||{__proto__:[]}instanceof Array&&function(e,t){e.__proto__=t}||function(e,t){for(var n in t)t.hasOwnProperty(n)&&(e[n]=t[n])},function(e,t){function n(){this.constructor=e}r(e,t),e.prototype=null===t?Object.create(t):(n.prototype=t.prototype,new n)}),i=function(e){function t(t,n){var r=this,o=this.constructor.prototype;return(r=e.call(this,t)||this).statusCode=n,r.__proto__=o,r}return o(t,e),t}(Error),a=function(e){function t(t){void 0===t&&(t="A timeout occurred.");var n=this,r=this.constructor.prototype;return(n=e.call(this,t)||this).__proto__=r,n}return 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"+o.status+": "+o.statusText+"."),r(new i(o.statusText,o.status))},o.ontimeout=function(){t.logger.log(f.a.Warning,"Timeout from HTTP request."),r(new a)},o.send(e.content||"")})):Promise.reject(new Error("No url defined.")):Promise.reject(new Error("No method defined."))},t}(l),E=function(){var e=Object.setPrototypeOf||{__proto__:[]}instanceof Array&&function(e,t){e.__proto__=t}||function(e,t){for(var n in t)t.hasOwnProperty(n)&&(e[n]=t[n])};return function(t,n){function r(){this.constructor=t}e(t,n),t.prototype=null===n?Object.create(n):(r.prototype=n.prototype,new r)}}(),S=function(e){function t(t){var n=e.call(this)||this;if("undefined"!=typeof fetch||h.c.isNode)n.httpClient=new v(t);else{if("undefined"==typeof XMLHttpRequest)throw new Error("No usable HttpClient found.");n.httpClient=new w(t)}return n}return E(t,e),t.prototype.send=function(e){return e.abortSignal&&e.abortSignal.aborted?Promise.reject(new s):e.method?e.url?this.httpClient.send(e):Promise.reject(new Error("No url defined.")):Promise.reject(new Error("No method defined."))},t.prototype.getCookieString=function(e){return this.httpClient.getCookieString(e)},t}(l),C=n(45);!function(e){e[e.Invocation=1]="Invocation",e[e.StreamItem=2]="StreamItem",e[e.Completion=3]="Completion",e[e.StreamInvocation=4]="StreamInvocation",e[e.CancelInvocation=5]="CancelInvocation",e[e.Ping=6]="Ping",e[e.Close=7]="Close"}(b||(b={}));var I,_=function(){function e(){this.observers=[]}return e.prototype.next=function(e){for(var t=0,n=this.observers;t0&&o[o.length-1])||6!==i[0]&&2!==i[0])){a=0;continue}if(3===i[0]&&(!o||i[1]>o[0]&&i[1]0&&o[o.length-1])||6!==i[0]&&2!==i[0])){a=0;continue}if(3===i[0]&&(!o||i[1]>o[0]&&i[1]0&&o[o.length-1])||6!==i[0]&&2!==i[0])){a=0;continue}if(3===i[0]&&(!o||i[1]>o[0]&&i[1]0&&o[o.length-1])||6!==i[0]&&2!==i[0])){a=0;continue}if(3===i[0]&&(!o||i[1]>o[0]&&i[1]0&&o[o.length-1])||6!==i[0]&&2!==i[0])){a=0;continue}if(3===i[0]&&(!o||i[1]>o[0]&&i[1]0?[2,Promise.reject(new Error("Unable to connect to the server with any of the available transports. 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AdditionalAttributes { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } - [Microsoft.AspNetCore.Components.ParameterAttribute] - public Microsoft.AspNetCore.Components.RenderFragment? ChildContent { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } - [Microsoft.AspNetCore.Components.ParameterAttribute] - public Microsoft.AspNetCore.Components.Forms.EditContext? EditContext { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } - [Microsoft.AspNetCore.Components.ParameterAttribute] - public object? Model { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } - [Microsoft.AspNetCore.Components.ParameterAttribute] - public Microsoft.AspNetCore.Components.EventCallback OnInvalidSubmit { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } - [Microsoft.AspNetCore.Components.ParameterAttribute] - public Microsoft.AspNetCore.Components.EventCallback OnSubmit { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } - [Microsoft.AspNetCore.Components.ParameterAttribute] - public Microsoft.AspNetCore.Components.EventCallback OnValidSubmit { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } - protected override void BuildRenderTree(Microsoft.AspNetCore.Components.Rendering.RenderTreeBuilder builder) { } - protected override void OnParametersSet() { } - } - public abstract partial class InputBase : Microsoft.AspNetCore.Components.ComponentBase, System.IDisposable - { - protected InputBase() { } - [Microsoft.AspNetCore.Components.ParameterAttribute(CaptureUnmatchedValues=true)] - public System.Collections.Generic.IReadOnlyDictionary? AdditionalAttributes { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } - protected string CssClass { get { throw null; } } - [System.Diagnostics.CodeAnalysis.MaybeNullAttribute] - [System.Diagnostics.CodeAnalysis.AllowNullAttribute] - protected TValue CurrentValue { get { throw null; } set { } } - protected string? CurrentValueAsString { get { throw null; } set { } } - [Microsoft.AspNetCore.Components.ParameterAttribute] - public string? DisplayName { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } - protected Microsoft.AspNetCore.Components.Forms.EditContext EditContext { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } - protected internal Microsoft.AspNetCore.Components.Forms.FieldIdentifier FieldIdentifier { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } - [Microsoft.AspNetCore.Components.ParameterAttribute] - [System.Diagnostics.CodeAnalysis.MaybeNullAttribute] - [System.Diagnostics.CodeAnalysis.AllowNullAttribute] - public TValue Value { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } - [Microsoft.AspNetCore.Components.ParameterAttribute] - public Microsoft.AspNetCore.Components.EventCallback ValueChanged { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } - [Microsoft.AspNetCore.Components.ParameterAttribute] - public System.Linq.Expressions.Expression>? ValueExpression { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } - protected virtual void Dispose(bool disposing) { } - protected virtual string? FormatValueAsString([System.Diagnostics.CodeAnalysis.AllowNullAttribute] TValue value) { throw null; } - public override System.Threading.Tasks.Task SetParametersAsync(Microsoft.AspNetCore.Components.ParameterView parameters) { throw null; } - void System.IDisposable.Dispose() { } - protected abstract bool TryParseValueFromString(string? value, [System.Diagnostics.CodeAnalysis.MaybeNullAttribute] out TValue result, [System.Diagnostics.CodeAnalysis.NotNullWhenAttribute(false)] out string? validationErrorMessage); - } - public partial class InputCheckbox : Microsoft.AspNetCore.Components.Forms.InputBase - { - public InputCheckbox() { } - protected override void BuildRenderTree(Microsoft.AspNetCore.Components.Rendering.RenderTreeBuilder builder) { } - protected override bool TryParseValueFromString(string? value, out bool result, [System.Diagnostics.CodeAnalysis.NotNullWhenAttribute(false)] out string? validationErrorMessage) { throw null; } - } - public partial class InputDate : Microsoft.AspNetCore.Components.Forms.InputBase - { - public InputDate() { } - [Microsoft.AspNetCore.Components.ParameterAttribute] - public string ParsingErrorMessage { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } - protected override void BuildRenderTree(Microsoft.AspNetCore.Components.Rendering.RenderTreeBuilder builder) { } - protected override string FormatValueAsString([System.Diagnostics.CodeAnalysis.AllowNullAttribute] TValue value) { throw null; } - protected override bool TryParseValueFromString(string? value, [System.Diagnostics.CodeAnalysis.MaybeNullAttribute] out TValue result, [System.Diagnostics.CodeAnalysis.NotNullWhenAttribute(false)] out string? validationErrorMessage) { throw null; } - } - public partial class InputNumber : Microsoft.AspNetCore.Components.Forms.InputBase - { - public InputNumber() { } - [Microsoft.AspNetCore.Components.ParameterAttribute] - public string ParsingErrorMessage { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } - protected override void BuildRenderTree(Microsoft.AspNetCore.Components.Rendering.RenderTreeBuilder builder) { } - protected override string? FormatValueAsString([System.Diagnostics.CodeAnalysis.AllowNullAttribute] TValue value) { throw null; } - protected override bool TryParseValueFromString(string? value, [System.Diagnostics.CodeAnalysis.MaybeNullAttribute] out TValue result, [System.Diagnostics.CodeAnalysis.NotNullWhenAttribute(false)] out string? validationErrorMessage) { throw null; } - } - public partial class InputRadioGroup : Microsoft.AspNetCore.Components.Forms.InputBase - { - public InputRadioGroup() { } - [Microsoft.AspNetCore.Components.ParameterAttribute] - public Microsoft.AspNetCore.Components.RenderFragment? ChildContent { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } - [Microsoft.AspNetCore.Components.ParameterAttribute] - public string? Name { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } - protected override void BuildRenderTree(Microsoft.AspNetCore.Components.Rendering.RenderTreeBuilder builder) { } - protected override void OnParametersSet() { } - protected override bool TryParseValueFromString(string? value, [System.Diagnostics.CodeAnalysis.MaybeNullAttribute] out TValue result, [System.Diagnostics.CodeAnalysis.NotNullWhenAttribute(false)] out string? validationErrorMessage) { throw null; } - } - public partial class InputRadio : Microsoft.AspNetCore.Components.ComponentBase - { - public InputRadio() { } - [Microsoft.AspNetCore.Components.ParameterAttribute(CaptureUnmatchedValues=true)] - public System.Collections.Generic.IReadOnlyDictionary? AdditionalAttributes { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } - [Microsoft.AspNetCore.Components.ParameterAttribute] - public string? Name { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } - [Microsoft.AspNetCore.Components.ParameterAttribute] - [System.Diagnostics.CodeAnalysis.MaybeNullAttribute] - [System.Diagnostics.CodeAnalysis.AllowNullAttribute] - public TValue Value { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } - protected override void BuildRenderTree(Microsoft.AspNetCore.Components.Rendering.RenderTreeBuilder builder) { } - protected override void OnParametersSet() { } - } - public partial class InputSelect : Microsoft.AspNetCore.Components.Forms.InputBase - { - public InputSelect() { } - [Microsoft.AspNetCore.Components.ParameterAttribute] - public Microsoft.AspNetCore.Components.RenderFragment? ChildContent { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } - protected override void BuildRenderTree(Microsoft.AspNetCore.Components.Rendering.RenderTreeBuilder builder) { } - protected override bool TryParseValueFromString(string? value, [System.Diagnostics.CodeAnalysis.MaybeNullAttribute] out TValue result, [System.Diagnostics.CodeAnalysis.NotNullWhenAttribute(false)] out string? validationErrorMessage) { throw null; } - } - public partial class InputText : Microsoft.AspNetCore.Components.Forms.InputBase - { - public InputText() { } - protected override void BuildRenderTree(Microsoft.AspNetCore.Components.Rendering.RenderTreeBuilder builder) { } - protected override bool TryParseValueFromString(string? value, out string? result, [System.Diagnostics.CodeAnalysis.NotNullWhenAttribute(false)] out string? validationErrorMessage) { throw null; } - } - public partial class InputTextArea : Microsoft.AspNetCore.Components.Forms.InputBase - { - public InputTextArea() { } - protected override void BuildRenderTree(Microsoft.AspNetCore.Components.Rendering.RenderTreeBuilder builder) { } - protected override bool TryParseValueFromString(string? value, out string? result, [System.Diagnostics.CodeAnalysis.NotNullWhenAttribute(false)] out string? validationErrorMessage) { throw null; } - } - public partial class ValidationMessage : Microsoft.AspNetCore.Components.ComponentBase, System.IDisposable - { - public ValidationMessage() { } - [Microsoft.AspNetCore.Components.ParameterAttribute(CaptureUnmatchedValues=true)] - public System.Collections.Generic.IReadOnlyDictionary? AdditionalAttributes { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } - [Microsoft.AspNetCore.Components.ParameterAttribute] - public System.Linq.Expressions.Expression>? For { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } - protected override void BuildRenderTree(Microsoft.AspNetCore.Components.Rendering.RenderTreeBuilder builder) { } - protected virtual void Dispose(bool disposing) { } - protected override void OnParametersSet() { } - void System.IDisposable.Dispose() { } - } - public partial class ValidationSummary : Microsoft.AspNetCore.Components.ComponentBase, System.IDisposable - { - public ValidationSummary() { } - [Microsoft.AspNetCore.Components.ParameterAttribute(CaptureUnmatchedValues=true)] - public System.Collections.Generic.IReadOnlyDictionary? AdditionalAttributes { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } - [Microsoft.AspNetCore.Components.ParameterAttribute] - public object? Model { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } - protected override void BuildRenderTree(Microsoft.AspNetCore.Components.Rendering.RenderTreeBuilder builder) { } - protected virtual void Dispose(bool disposing) { } - protected override void OnParametersSet() { } - void System.IDisposable.Dispose() { } - } -} -namespace Microsoft.AspNetCore.Components.RenderTree -{ - public sealed partial class WebEventDescriptor - { - public WebEventDescriptor() { } - public int BrowserRendererId { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } - public string EventArgsType { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } - public Microsoft.AspNetCore.Components.RenderTree.EventFieldInfo? EventFieldInfo { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } - public ulong EventHandlerId { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } - } -} -namespace Microsoft.AspNetCore.Components.Routing -{ - public partial class NavLink : Microsoft.AspNetCore.Components.ComponentBase, System.IDisposable - { - public NavLink() { } - [Microsoft.AspNetCore.Components.ParameterAttribute] - public string? ActiveClass { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } - [Microsoft.AspNetCore.Components.ParameterAttribute(CaptureUnmatchedValues=true)] - public System.Collections.Generic.IReadOnlyDictionary? AdditionalAttributes { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } - [Microsoft.AspNetCore.Components.ParameterAttribute] - public Microsoft.AspNetCore.Components.RenderFragment? ChildContent { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } - protected string? CssClass { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } - [Microsoft.AspNetCore.Components.ParameterAttribute] - public Microsoft.AspNetCore.Components.Routing.NavLinkMatch Match { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } - protected override void BuildRenderTree(Microsoft.AspNetCore.Components.Rendering.RenderTreeBuilder builder) { } - public void Dispose() { } - protected override void OnInitialized() { } - protected override void OnParametersSet() { } - } - public enum NavLinkMatch - { - Prefix = 0, - All = 1, - } -} -namespace Microsoft.AspNetCore.Components.Virtualization -{ - public partial class WebVirtualizationHelper : Microsoft.AspNetCore.Components.Virtualization.IVirtualizationHelper, System.IAsyncDisposable - { - public WebVirtualizationHelper(Microsoft.JSInterop.IJSRuntime jsRuntime) { } - public event System.EventHandler? BottomSpacerVisible { add { } remove { } } - public event System.EventHandler? TopSpacerVisible { add { } remove { } } - [System.Diagnostics.DebuggerStepThroughAttribute] - public System.Threading.Tasks.ValueTask DisposeAsync() { throw null; } - [System.Diagnostics.DebuggerStepThroughAttribute] - public System.Threading.Tasks.ValueTask InitAsync(Microsoft.AspNetCore.Components.ElementReference topSpacer, Microsoft.AspNetCore.Components.ElementReference bottomSpacer) { throw null; } - [Microsoft.JSInterop.JSInvokableAttribute] - public void OnBottomSpacerVisible(float spacerSize, float containerSize) { } - [Microsoft.JSInterop.JSInvokableAttribute] - public void OnTopSpacerVisible(float spacerSize, float containerSize) { } - } - public partial class WebVirtualizationService : Microsoft.AspNetCore.Components.Virtualization.IVirtualizationService - { - public WebVirtualizationService(Microsoft.JSInterop.IJSRuntime jsRuntime) { } - public Microsoft.AspNetCore.Components.Virtualization.IVirtualizationHelper CreateVirtualizationHelper() { throw null; } - } -} -namespace Microsoft.AspNetCore.Components.Web -{ - [Microsoft.AspNetCore.Components.BindElementAttribute("select", null, "value", "onchange")] - [Microsoft.AspNetCore.Components.BindElementAttribute("textarea", null, "value", "onchange")] - [Microsoft.AspNetCore.Components.BindInputElementAttribute("checkbox", null, "checked", "onchange", false, null)] - [Microsoft.AspNetCore.Components.BindInputElementAttribute("date", "value", "value", "onchange", true, "yyyy-MM-dd")] - [Microsoft.AspNetCore.Components.BindInputElementAttribute("date", null, "value", "onchange", true, "yyyy-MM-dd")] - [Microsoft.AspNetCore.Components.BindInputElementAttribute("datetime-local", "value", "value", "onchange", true, "yyyy-MM-ddTHH:mm:ss")] - [Microsoft.AspNetCore.Components.BindInputElementAttribute("datetime-local", null, "value", "onchange", true, "yyyy-MM-ddTHH:mm:ss")] - [Microsoft.AspNetCore.Components.BindInputElementAttribute("month", "value", "value", "onchange", true, "yyyy-MM")] - [Microsoft.AspNetCore.Components.BindInputElementAttribute("month", null, "value", "onchange", true, "yyyy-MM")] - [Microsoft.AspNetCore.Components.BindInputElementAttribute("number", "value", "value", "onchange", true, null)] - [Microsoft.AspNetCore.Components.BindInputElementAttribute("number", null, "value", "onchange", true, null)] - [Microsoft.AspNetCore.Components.BindInputElementAttribute("text", null, "value", "onchange", false, null)] - [Microsoft.AspNetCore.Components.BindInputElementAttribute("time", "value", "value", "onchange", true, "HH:mm:ss")] - [Microsoft.AspNetCore.Components.BindInputElementAttribute("time", null, "value", "onchange", true, "HH:mm:ss")] - [Microsoft.AspNetCore.Components.BindInputElementAttribute(null, "value", "value", "onchange", false, null)] - [Microsoft.AspNetCore.Components.BindInputElementAttribute(null, null, "value", "onchange", false, null)] - public static partial class BindAttributes - { - } - public partial class ClipboardEventArgs : System.EventArgs - { - public ClipboardEventArgs() { } - public string Type { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } - } - public partial class DataTransfer - { - public DataTransfer() { } - public string DropEffect { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } - public string? EffectAllowed { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } - public string[] Files { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } - public Microsoft.AspNetCore.Components.Web.DataTransferItem[] Items { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } - public string[] Types { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } - } - public partial class DataTransferItem - { - public DataTransferItem() { } - public string Kind { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } - public string Type { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } - } - public partial class DragEventArgs : Microsoft.AspNetCore.Components.Web.MouseEventArgs - { - public DragEventArgs() { } - public Microsoft.AspNetCore.Components.Web.DataTransfer DataTransfer { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } - } - public partial class ErrorEventArgs : System.EventArgs - { - public ErrorEventArgs() { } - public int Colno { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } - public string? Filename { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } - public int Lineno { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } - public string? Message { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } - public string? Type { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } - } - [Microsoft.AspNetCore.Components.EventHandlerAttribute("onabort", typeof(Microsoft.AspNetCore.Components.Web.ProgressEventArgs), true, true)] - [Microsoft.AspNetCore.Components.EventHandlerAttribute("onactivate", typeof(System.EventArgs), true, true)] - [Microsoft.AspNetCore.Components.EventHandlerAttribute("onbeforeactivate", typeof(System.EventArgs), true, true)] - [Microsoft.AspNetCore.Components.EventHandlerAttribute("onbeforecopy", typeof(System.EventArgs), true, true)] - [Microsoft.AspNetCore.Components.EventHandlerAttribute("onbeforecut", typeof(System.EventArgs), true, true)] - [Microsoft.AspNetCore.Components.EventHandlerAttribute("onbeforedeactivate", typeof(System.EventArgs), true, true)] - [Microsoft.AspNetCore.Components.EventHandlerAttribute("onbeforepaste", typeof(System.EventArgs), true, true)] - [Microsoft.AspNetCore.Components.EventHandlerAttribute("onblur", typeof(Microsoft.AspNetCore.Components.Web.FocusEventArgs), true, true)] - [Microsoft.AspNetCore.Components.EventHandlerAttribute("oncanplay", typeof(System.EventArgs), true, true)] - [Microsoft.AspNetCore.Components.EventHandlerAttribute("oncanplaythrough", typeof(System.EventArgs), true, true)] - [Microsoft.AspNetCore.Components.EventHandlerAttribute("onchange", typeof(Microsoft.AspNetCore.Components.ChangeEventArgs), true, true)] - [Microsoft.AspNetCore.Components.EventHandlerAttribute("onclick", typeof(Microsoft.AspNetCore.Components.Web.MouseEventArgs), true, true)] - [Microsoft.AspNetCore.Components.EventHandlerAttribute("oncontextmenu", typeof(Microsoft.AspNetCore.Components.Web.MouseEventArgs), true, true)] - [Microsoft.AspNetCore.Components.EventHandlerAttribute("oncopy", typeof(Microsoft.AspNetCore.Components.Web.ClipboardEventArgs), true, true)] - [Microsoft.AspNetCore.Components.EventHandlerAttribute("oncuechange", typeof(System.EventArgs), true, true)] - [Microsoft.AspNetCore.Components.EventHandlerAttribute("oncut", typeof(Microsoft.AspNetCore.Components.Web.ClipboardEventArgs), true, true)] - [Microsoft.AspNetCore.Components.EventHandlerAttribute("ondblclick", typeof(Microsoft.AspNetCore.Components.Web.MouseEventArgs), true, true)] - [Microsoft.AspNetCore.Components.EventHandlerAttribute("ondeactivate", typeof(System.EventArgs), true, true)] - [Microsoft.AspNetCore.Components.EventHandlerAttribute("ondrag", typeof(Microsoft.AspNetCore.Components.Web.DragEventArgs), true, true)] - [Microsoft.AspNetCore.Components.EventHandlerAttribute("ondragend", typeof(Microsoft.AspNetCore.Components.Web.DragEventArgs), true, true)] - [Microsoft.AspNetCore.Components.EventHandlerAttribute("ondragenter", typeof(Microsoft.AspNetCore.Components.Web.DragEventArgs), true, true)] - [Microsoft.AspNetCore.Components.EventHandlerAttribute("ondragleave", typeof(Microsoft.AspNetCore.Components.Web.DragEventArgs), true, true)] - [Microsoft.AspNetCore.Components.EventHandlerAttribute("ondragover", typeof(Microsoft.AspNetCore.Components.Web.DragEventArgs), true, true)] - [Microsoft.AspNetCore.Components.EventHandlerAttribute("ondragstart", typeof(Microsoft.AspNetCore.Components.Web.DragEventArgs), true, true)] - [Microsoft.AspNetCore.Components.EventHandlerAttribute("ondrop", typeof(Microsoft.AspNetCore.Components.Web.DragEventArgs), true, true)] - [Microsoft.AspNetCore.Components.EventHandlerAttribute("ondurationchange", typeof(System.EventArgs), true, true)] - [Microsoft.AspNetCore.Components.EventHandlerAttribute("onemptied", typeof(System.EventArgs), true, true)] - [Microsoft.AspNetCore.Components.EventHandlerAttribute("onended", typeof(System.EventArgs), true, true)] - [Microsoft.AspNetCore.Components.EventHandlerAttribute("onerror", typeof(Microsoft.AspNetCore.Components.Web.ErrorEventArgs), true, true)] - [Microsoft.AspNetCore.Components.EventHandlerAttribute("onfocus", typeof(Microsoft.AspNetCore.Components.Web.FocusEventArgs), true, true)] - [Microsoft.AspNetCore.Components.EventHandlerAttribute("onfocusin", typeof(Microsoft.AspNetCore.Components.Web.FocusEventArgs), true, true)] - [Microsoft.AspNetCore.Components.EventHandlerAttribute("onfocusout", typeof(Microsoft.AspNetCore.Components.Web.FocusEventArgs), true, true)] - [Microsoft.AspNetCore.Components.EventHandlerAttribute("onfullscreenchange", typeof(System.EventArgs), true, true)] - [Microsoft.AspNetCore.Components.EventHandlerAttribute("onfullscreenerror", typeof(System.EventArgs), true, true)] - [Microsoft.AspNetCore.Components.EventHandlerAttribute("ongotpointercapture", typeof(Microsoft.AspNetCore.Components.Web.PointerEventArgs), true, true)] - [Microsoft.AspNetCore.Components.EventHandlerAttribute("oninput", typeof(Microsoft.AspNetCore.Components.ChangeEventArgs), true, true)] - [Microsoft.AspNetCore.Components.EventHandlerAttribute("oninvalid", typeof(System.EventArgs), true, true)] - [Microsoft.AspNetCore.Components.EventHandlerAttribute("onkeydown", typeof(Microsoft.AspNetCore.Components.Web.KeyboardEventArgs), true, true)] - [Microsoft.AspNetCore.Components.EventHandlerAttribute("onkeypress", typeof(Microsoft.AspNetCore.Components.Web.KeyboardEventArgs), true, true)] - [Microsoft.AspNetCore.Components.EventHandlerAttribute("onkeyup", typeof(Microsoft.AspNetCore.Components.Web.KeyboardEventArgs), true, true)] - [Microsoft.AspNetCore.Components.EventHandlerAttribute("onload", typeof(Microsoft.AspNetCore.Components.Web.ProgressEventArgs), true, true)] - [Microsoft.AspNetCore.Components.EventHandlerAttribute("onloadeddata", typeof(System.EventArgs), true, true)] - [Microsoft.AspNetCore.Components.EventHandlerAttribute("onloadedmetadata", typeof(System.EventArgs), true, true)] - [Microsoft.AspNetCore.Components.EventHandlerAttribute("onloadend", typeof(Microsoft.AspNetCore.Components.Web.ProgressEventArgs), true, true)] - [Microsoft.AspNetCore.Components.EventHandlerAttribute("onloadstart", typeof(Microsoft.AspNetCore.Components.Web.ProgressEventArgs), true, true)] - [Microsoft.AspNetCore.Components.EventHandlerAttribute("onlostpointercapture", typeof(Microsoft.AspNetCore.Components.Web.PointerEventArgs), true, true)] - [Microsoft.AspNetCore.Components.EventHandlerAttribute("onmousedown", typeof(Microsoft.AspNetCore.Components.Web.MouseEventArgs), true, true)] - [Microsoft.AspNetCore.Components.EventHandlerAttribute("onmousemove", typeof(Microsoft.AspNetCore.Components.Web.MouseEventArgs), true, true)] - [Microsoft.AspNetCore.Components.EventHandlerAttribute("onmouseout", typeof(Microsoft.AspNetCore.Components.Web.MouseEventArgs), true, true)] - [Microsoft.AspNetCore.Components.EventHandlerAttribute("onmouseover", typeof(Microsoft.AspNetCore.Components.Web.MouseEventArgs), true, true)] - [Microsoft.AspNetCore.Components.EventHandlerAttribute("onmouseup", typeof(Microsoft.AspNetCore.Components.Web.MouseEventArgs), true, true)] - [Microsoft.AspNetCore.Components.EventHandlerAttribute("onmousewheel", typeof(Microsoft.AspNetCore.Components.Web.WheelEventArgs), true, true)] - [Microsoft.AspNetCore.Components.EventHandlerAttribute("onpaste", typeof(Microsoft.AspNetCore.Components.Web.ClipboardEventArgs), true, true)] - [Microsoft.AspNetCore.Components.EventHandlerAttribute("onpause", typeof(System.EventArgs), true, true)] - [Microsoft.AspNetCore.Components.EventHandlerAttribute("onplay", typeof(System.EventArgs), true, true)] - [Microsoft.AspNetCore.Components.EventHandlerAttribute("onplaying", typeof(System.EventArgs), true, true)] - [Microsoft.AspNetCore.Components.EventHandlerAttribute("onpointercancel", typeof(Microsoft.AspNetCore.Components.Web.PointerEventArgs), true, true)] - [Microsoft.AspNetCore.Components.EventHandlerAttribute("onpointerdown", typeof(Microsoft.AspNetCore.Components.Web.PointerEventArgs), true, true)] - [Microsoft.AspNetCore.Components.EventHandlerAttribute("onpointerenter", typeof(Microsoft.AspNetCore.Components.Web.PointerEventArgs), true, true)] - [Microsoft.AspNetCore.Components.EventHandlerAttribute("onpointerleave", typeof(Microsoft.AspNetCore.Components.Web.PointerEventArgs), true, true)] - [Microsoft.AspNetCore.Components.EventHandlerAttribute("onpointerlockchange", typeof(System.EventArgs), true, true)] - [Microsoft.AspNetCore.Components.EventHandlerAttribute("onpointerlockerror", typeof(System.EventArgs), true, true)] - [Microsoft.AspNetCore.Components.EventHandlerAttribute("onpointermove", typeof(Microsoft.AspNetCore.Components.Web.PointerEventArgs), true, true)] - [Microsoft.AspNetCore.Components.EventHandlerAttribute("onpointerout", typeof(Microsoft.AspNetCore.Components.Web.PointerEventArgs), true, true)] - [Microsoft.AspNetCore.Components.EventHandlerAttribute("onpointerover", typeof(Microsoft.AspNetCore.Components.Web.PointerEventArgs), true, true)] - [Microsoft.AspNetCore.Components.EventHandlerAttribute("onpointerup", typeof(Microsoft.AspNetCore.Components.Web.PointerEventArgs), true, true)] - [Microsoft.AspNetCore.Components.EventHandlerAttribute("onprogress", typeof(Microsoft.AspNetCore.Components.Web.ProgressEventArgs), true, true)] - [Microsoft.AspNetCore.Components.EventHandlerAttribute("onratechange", typeof(System.EventArgs), true, true)] - [Microsoft.AspNetCore.Components.EventHandlerAttribute("onreadystatechange", typeof(System.EventArgs), true, true)] - [Microsoft.AspNetCore.Components.EventHandlerAttribute("onreset", typeof(System.EventArgs), true, true)] - [Microsoft.AspNetCore.Components.EventHandlerAttribute("onscroll", typeof(System.EventArgs), true, true)] - [Microsoft.AspNetCore.Components.EventHandlerAttribute("onseeked", typeof(System.EventArgs), true, true)] - [Microsoft.AspNetCore.Components.EventHandlerAttribute("onseeking", typeof(System.EventArgs), true, true)] - [Microsoft.AspNetCore.Components.EventHandlerAttribute("onselect", typeof(System.EventArgs), true, true)] - [Microsoft.AspNetCore.Components.EventHandlerAttribute("onselectionchange", typeof(System.EventArgs), true, true)] - [Microsoft.AspNetCore.Components.EventHandlerAttribute("onselectstart", typeof(System.EventArgs), true, true)] - [Microsoft.AspNetCore.Components.EventHandlerAttribute("onstalled", typeof(System.EventArgs), true, true)] - [Microsoft.AspNetCore.Components.EventHandlerAttribute("onstop", typeof(System.EventArgs), true, true)] - [Microsoft.AspNetCore.Components.EventHandlerAttribute("onsubmit", typeof(System.EventArgs), true, true)] - [Microsoft.AspNetCore.Components.EventHandlerAttribute("onsuspend", typeof(System.EventArgs), true, true)] - [Microsoft.AspNetCore.Components.EventHandlerAttribute("ontimeout", typeof(Microsoft.AspNetCore.Components.Web.ProgressEventArgs), true, true)] - [Microsoft.AspNetCore.Components.EventHandlerAttribute("ontimeupdate", typeof(System.EventArgs), true, true)] - [Microsoft.AspNetCore.Components.EventHandlerAttribute("ontouchcancel", typeof(Microsoft.AspNetCore.Components.Web.TouchEventArgs), true, true)] - [Microsoft.AspNetCore.Components.EventHandlerAttribute("ontouchend", typeof(Microsoft.AspNetCore.Components.Web.TouchEventArgs), true, true)] - [Microsoft.AspNetCore.Components.EventHandlerAttribute("ontouchenter", typeof(Microsoft.AspNetCore.Components.Web.TouchEventArgs), true, true)] - [Microsoft.AspNetCore.Components.EventHandlerAttribute("ontouchleave", typeof(Microsoft.AspNetCore.Components.Web.TouchEventArgs), true, true)] - [Microsoft.AspNetCore.Components.EventHandlerAttribute("ontouchmove", typeof(Microsoft.AspNetCore.Components.Web.TouchEventArgs), true, true)] - [Microsoft.AspNetCore.Components.EventHandlerAttribute("ontouchstart", typeof(Microsoft.AspNetCore.Components.Web.TouchEventArgs), true, true)] - [Microsoft.AspNetCore.Components.EventHandlerAttribute("onvolumechange", typeof(System.EventArgs), true, true)] - [Microsoft.AspNetCore.Components.EventHandlerAttribute("onwaiting", typeof(System.EventArgs), true, true)] - [Microsoft.AspNetCore.Components.EventHandlerAttribute("onwheel", typeof(Microsoft.AspNetCore.Components.Web.WheelEventArgs), true, true)] - public static partial class EventHandlers - { - } - public partial class FocusEventArgs : System.EventArgs - { - public FocusEventArgs() { } - public string? Type { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } - } - public partial class KeyboardEventArgs : System.EventArgs - { - public KeyboardEventArgs() { } - public bool AltKey { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } - public string Code { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } - public bool CtrlKey { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } - public string Key { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } - public float Location { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } - public bool MetaKey { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } - public bool Repeat { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } - public bool ShiftKey { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } - public string Type { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } - } - public partial class MouseEventArgs : System.EventArgs - { - public MouseEventArgs() { } - public bool AltKey { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } - public long Button { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } - public long Buttons { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } - public double ClientX { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } - public double ClientY { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } - public bool CtrlKey { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } - public long Detail { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } - public bool MetaKey { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } - public double OffsetX { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } - public double OffsetY { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } - public double ScreenX { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } - public double ScreenY { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } - public bool ShiftKey { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } - public string Type { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } - } - public partial class PointerEventArgs : Microsoft.AspNetCore.Components.Web.MouseEventArgs - { - public PointerEventArgs() { } - public float Height { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } - public bool IsPrimary { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } - public long PointerId { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } - public string PointerType { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } - public float Pressure { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } - public float TiltX { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } - public float TiltY { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } - public float Width { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } - } - public partial class ProgressEventArgs : System.EventArgs - { - public ProgressEventArgs() { } - public bool LengthComputable { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } - public long Loaded { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } - public long Total { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } - public string Type { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } - } - public partial class TouchEventArgs : System.EventArgs - { - public TouchEventArgs() { } - public bool AltKey { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } - public Microsoft.AspNetCore.Components.Web.TouchPoint[] ChangedTouches { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } - public bool CtrlKey { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } - public long Detail { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } - public bool MetaKey { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } - public bool ShiftKey { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } - public Microsoft.AspNetCore.Components.Web.TouchPoint[] TargetTouches { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } - public Microsoft.AspNetCore.Components.Web.TouchPoint[] Touches { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } - public string Type { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } - } - public partial class TouchPoint - { - public TouchPoint() { } - public double ClientX { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } - public double ClientY { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } - public long Identifier { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } - public double PageX { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } - public double PageY { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } - public double ScreenX { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } - public double ScreenY { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } - } - public static partial class WebEventCallbackFactoryEventArgsExtensions - { - public static Microsoft.AspNetCore.Components.EventCallback Create(this Microsoft.AspNetCore.Components.EventCallbackFactory factory, object receiver, System.Action callback) { throw null; } - public static Microsoft.AspNetCore.Components.EventCallback Create(this Microsoft.AspNetCore.Components.EventCallbackFactory factory, object receiver, System.Action callback) { throw null; } - public static Microsoft.AspNetCore.Components.EventCallback Create(this Microsoft.AspNetCore.Components.EventCallbackFactory factory, object receiver, System.Action callback) { throw null; } - public static Microsoft.AspNetCore.Components.EventCallback Create(this Microsoft.AspNetCore.Components.EventCallbackFactory factory, object receiver, System.Action callback) { throw null; } - public static Microsoft.AspNetCore.Components.EventCallback Create(this Microsoft.AspNetCore.Components.EventCallbackFactory factory, object receiver, System.Action callback) { throw null; } - public static Microsoft.AspNetCore.Components.EventCallback Create(this Microsoft.AspNetCore.Components.EventCallbackFactory factory, object receiver, System.Action callback) { throw null; } - public static Microsoft.AspNetCore.Components.EventCallback Create(this Microsoft.AspNetCore.Components.EventCallbackFactory factory, object receiver, System.Action callback) { throw null; } - public static Microsoft.AspNetCore.Components.EventCallback Create(this Microsoft.AspNetCore.Components.EventCallbackFactory factory, object receiver, System.Action callback) { throw null; } - public static Microsoft.AspNetCore.Components.EventCallback Create(this Microsoft.AspNetCore.Components.EventCallbackFactory factory, object receiver, System.Action callback) { throw null; } - public static Microsoft.AspNetCore.Components.EventCallback Create(this Microsoft.AspNetCore.Components.EventCallbackFactory factory, object receiver, System.Action callback) { throw null; } - public static Microsoft.AspNetCore.Components.EventCallback Create(this Microsoft.AspNetCore.Components.EventCallbackFactory factory, object receiver, System.Func callback) { throw null; } - public static Microsoft.AspNetCore.Components.EventCallback Create(this Microsoft.AspNetCore.Components.EventCallbackFactory factory, object receiver, System.Func callback) { throw null; } - public static Microsoft.AspNetCore.Components.EventCallback Create(this Microsoft.AspNetCore.Components.EventCallbackFactory factory, object receiver, System.Func callback) { throw null; } - public static Microsoft.AspNetCore.Components.EventCallback Create(this Microsoft.AspNetCore.Components.EventCallbackFactory factory, object receiver, System.Func callback) { throw null; } - public static Microsoft.AspNetCore.Components.EventCallback Create(this Microsoft.AspNetCore.Components.EventCallbackFactory factory, object receiver, System.Func callback) { throw null; } - public static Microsoft.AspNetCore.Components.EventCallback Create(this Microsoft.AspNetCore.Components.EventCallbackFactory factory, object receiver, System.Func callback) { throw null; } - public static Microsoft.AspNetCore.Components.EventCallback Create(this Microsoft.AspNetCore.Components.EventCallbackFactory factory, object receiver, System.Func callback) { throw null; } - public static Microsoft.AspNetCore.Components.EventCallback Create(this Microsoft.AspNetCore.Components.EventCallbackFactory factory, object receiver, System.Func callback) { throw null; } - public static Microsoft.AspNetCore.Components.EventCallback Create(this Microsoft.AspNetCore.Components.EventCallbackFactory factory, object receiver, System.Func callback) { throw null; } - public static Microsoft.AspNetCore.Components.EventCallback Create(this Microsoft.AspNetCore.Components.EventCallbackFactory factory, object receiver, System.Func callback) { throw null; } - } - public static partial class WebRenderTreeBuilderExtensions - { - public static void AddEventPreventDefaultAttribute(this Microsoft.AspNetCore.Components.Rendering.RenderTreeBuilder builder, int sequence, string eventName, bool value) { } - public static void AddEventStopPropagationAttribute(this Microsoft.AspNetCore.Components.Rendering.RenderTreeBuilder builder, int sequence, string eventName, bool value) { } - } - public partial class WheelEventArgs : Microsoft.AspNetCore.Components.Web.MouseEventArgs - { - public WheelEventArgs() { } - public long DeltaMode { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } - public double DeltaX { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } - public double DeltaY { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } - public double DeltaZ { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } } - } -} From bed2a6bb9260b7616a7235de4e918b8d20e28e46 Mon Sep 17 00:00:00 2001 From: Mackinnon Buck Date: Thu, 23 Jul 2020 17:30:39 -0700 Subject: [PATCH 05/21] Implemented alternate approach suggested in CR. --- .../Virtualization/IVirtualizationHelper.cs | 32 ---- .../Virtualization/IVirtualizationService.cs | 17 -- .../src/Virtualization/InfiniteScroll.cs | 84 --------- .../src/Virtualization/SpacerEventArgs.cs | 34 ---- .../src/Virtualization/Virtualize.cs | 36 ---- .../src/Virtualization/VirtualizeBase.cs | 160 +++++++++--------- .../ComponentServiceCollectionExtensions.cs | 1 - .../Web.JS/dist/Release/blazor.server.js | 2 +- .../Web.JS/dist/Release/blazor.webassembly.js | 2 +- src/Components/Web.JS/src/Virtualize.ts | 25 +-- .../Web/src/Virtualization/Virtualize.cs | 146 ++++++++++++++++ .../Virtualization/WebVirtualizationHelper.cs | 71 -------- .../WebVirtualizationService.cs | 28 --- .../src/Hosting/WebAssemblyHostBuilder.cs | 1 - .../VirtualizationComponent.razor | 97 +++++++++-- 15 files changed, 320 insertions(+), 416 deletions(-) delete mode 100644 src/Components/Components/src/Virtualization/IVirtualizationHelper.cs delete mode 100644 src/Components/Components/src/Virtualization/IVirtualizationService.cs delete mode 100644 src/Components/Components/src/Virtualization/InfiniteScroll.cs delete mode 100644 src/Components/Components/src/Virtualization/SpacerEventArgs.cs delete mode 100644 src/Components/Components/src/Virtualization/Virtualize.cs create mode 100644 src/Components/Web/src/Virtualization/Virtualize.cs delete mode 100644 src/Components/Web/src/Virtualization/WebVirtualizationHelper.cs delete mode 100644 src/Components/Web/src/Virtualization/WebVirtualizationService.cs diff --git a/src/Components/Components/src/Virtualization/IVirtualizationHelper.cs b/src/Components/Components/src/Virtualization/IVirtualizationHelper.cs deleted file mode 100644 index dcf9787287e2..000000000000 --- a/src/Components/Components/src/Virtualization/IVirtualizationHelper.cs +++ /dev/null @@ -1,32 +0,0 @@ -// Copyright (c) .NET Foundation. All rights reserved. -// Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information. - -using System; -using System.Threading.Tasks; - -namespace Microsoft.AspNetCore.Components.Virtualization -{ - /// - /// Describes a helper for detecting and relaying virtualization events. - /// - public interface IVirtualizationHelper : IAsyncDisposable - { - /// - /// Performs platform-specific initialization. - /// - /// The representing the top spacer. - /// The representing the bottom spacer. - /// The associated with the completion of this operation. - ValueTask InitAsync(ElementReference topSpacer, ElementReference bottomSpacer); - - /// - /// Invoked when the top spacer becomes visible. - /// - event EventHandler TopSpacerVisible; - - /// - /// Invoked when the bottom spacer becomes visible. - /// - event EventHandler BottomSpacerVisible; - } -} diff --git a/src/Components/Components/src/Virtualization/IVirtualizationService.cs b/src/Components/Components/src/Virtualization/IVirtualizationService.cs deleted file mode 100644 index 4ff5e5595bdf..000000000000 --- a/src/Components/Components/src/Virtualization/IVirtualizationService.cs +++ /dev/null @@ -1,17 +0,0 @@ -// Copyright (c) .NET Foundation. All rights reserved. -// Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information. - -namespace Microsoft.AspNetCore.Components.Virtualization -{ - /// - /// Describes services enabling platform-specific virtualization. - /// - public interface IVirtualizationService - { - /// - /// Creates a helper used for detecting and relaying virtualization events. - /// - /// - IVirtualizationHelper CreateVirtualizationHelper(); - } -} diff --git a/src/Components/Components/src/Virtualization/InfiniteScroll.cs b/src/Components/Components/src/Virtualization/InfiniteScroll.cs deleted file mode 100644 index 9223ccd034a4..000000000000 --- a/src/Components/Components/src/Virtualization/InfiniteScroll.cs +++ /dev/null @@ -1,84 +0,0 @@ -// Copyright (c) .NET Foundation. All rights reserved. -// Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information. - -using System; -using System.Collections.Concurrent; -using System.Collections.Generic; -using System.Linq; -using System.Threading; -using System.Threading.Tasks; - -namespace Microsoft.AspNetCore.Components.Virtualization -{ - /// - /// Provides functionality for rendering a virtualized, infinite list of items. - /// - /// The context type for the items being rendered. - public sealed class InfiniteScroll : VirtualizeBase - { - private readonly ConcurrentQueue _loadedItems = new ConcurrentQueue(); - - private int _fetchingItems; - - protected override int ItemCount => InfiniteScrollFooter == null ? _loadedItems.Count : _loadedItems.Count + 1; - - /// - /// Gets or sets the list item template. - /// - [Parameter] - public RenderFragment Item { get; set; } = default!; - - /// - /// Gets or sets the infinite scroll footer template. - /// - [Parameter] - public RenderFragment? InfiniteScrollFooter { get; set; } - - /// - /// Gets or sets the function that provides items for the inifinite scroll. - /// - [Parameter] - public Func>> ItemsProvider { get; set; } = default!; - - /// - /// The batch size in which items are fetched. - /// - [Parameter] - public int ItemBatchSize { get; set; } - - protected override IEnumerable GetItems(int start, int count) - { - if (start + count >= _loadedItems.Count) - { - // Fetch more items if we're not already - FetchItemsAsync(); - - var items = _loadedItems.Skip(start).Select(item => Item(item)); - - return InfiniteScrollFooter == null ? items : items.Append(InfiniteScrollFooter); - } - else - { - return _loadedItems.Skip(start).Take(count).Select(item => Item(item)); - } - } - - private void FetchItemsAsync() - { - if (Interlocked.Exchange(ref _fetchingItems, 1) == 0) - { - ItemsProvider(new Range(_loadedItems.Count, _loadedItems.Count + ItemBatchSize)).ContinueWith(t => - { - foreach (var item in t.Result) - { - _loadedItems.Enqueue(item); - } - - _fetchingItems = 0; - - InvokeAsync(() => StateHasChanged()); - }); - } - } - } -} diff --git a/src/Components/Components/src/Virtualization/SpacerEventArgs.cs b/src/Components/Components/src/Virtualization/SpacerEventArgs.cs deleted file mode 100644 index de52961a4108..000000000000 --- a/src/Components/Components/src/Virtualization/SpacerEventArgs.cs +++ /dev/null @@ -1,34 +0,0 @@ -// Copyright (c) .NET Foundation. All rights reserved. -// Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information. - -using System; - -namespace Microsoft.AspNetCore.Components.Virtualization -{ - /// - /// Describes an event involving a spacer in a virtualized list. - /// - public class SpacerEventArgs : EventArgs - { - /// - /// The new size of the spacer. - /// - public float SpacerSize { get; } - - /// - /// The current size of the spacer's container. - /// - public float ContainerSize { get; } - - /// - /// Instantiates a new instance. - /// - /// The new size of the spacer. - /// The current size of the spacer's container. - public SpacerEventArgs(float spacerSize, float containerSize) - { - SpacerSize = spacerSize; - ContainerSize = containerSize; - } - } -} diff --git a/src/Components/Components/src/Virtualization/Virtualize.cs b/src/Components/Components/src/Virtualization/Virtualize.cs deleted file mode 100644 index 1f7dcd8f6ebb..000000000000 --- a/src/Components/Components/src/Virtualization/Virtualize.cs +++ /dev/null @@ -1,36 +0,0 @@ -// Copyright (c) .NET Foundation. All rights reserved. -// Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information. - -using System.Collections.Generic; -using System.Linq; - -namespace Microsoft.AspNetCore.Components.Virtualization -{ - /// - /// Provides functionality for rendering a virtualized, fixed-size list of items. - /// - /// The context type for the items being rendered. - public sealed class Virtualize : VirtualizeBase - { - protected override int ItemCount => Items.Count; - - /// - /// Gets or sets the content template for list items. - /// - [Parameter] - public RenderFragment? ChildContent { get; set; } - - /// - /// Gets or sets the collection of items used to generate the list. - /// - [Parameter] - public ICollection Items { get; set; } = default!; - - protected override IEnumerable GetItems(int start, int count) - { - return ChildContent == null ? - Enumerable.Empty() : - Items.Skip(start).Take(count).Select(item => ChildContent.Invoke(item)); - } - } -} diff --git a/src/Components/Components/src/Virtualization/VirtualizeBase.cs b/src/Components/Components/src/Virtualization/VirtualizeBase.cs index 7c4f18459e2b..6fab58bf665f 100644 --- a/src/Components/Components/src/Virtualization/VirtualizeBase.cs +++ b/src/Components/Components/src/Virtualization/VirtualizeBase.cs @@ -2,9 +2,10 @@ // Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information. using System; +using System.Collections.Concurrent; using System.Collections.Generic; +using System.Threading; using System.Threading.Tasks; -using Microsoft.AspNetCore.Components.Rendering; namespace Microsoft.AspNetCore.Components.Virtualization { @@ -12,122 +13,115 @@ namespace Microsoft.AspNetCore.Components.Virtualization /// Provides common functionality for virtualized lists. /// /// The context type for the items being rendered. - public abstract class VirtualizeBase : ComponentBase, IAsyncDisposable + public abstract class VirtualizeBase : ComponentBase { - private int _itemsAbove; + private readonly ConcurrentQueue _loadedItems = new ConcurrentQueue(); - private int _itemsVisible; + private int _isFetchingItems; - private ElementReference _topSpacer; + /// + /// Gets an enumerable of all list items in memory. + /// + protected IEnumerable ItemSource { get; private set; } = default!; - private ElementReference _bottomSpacer; + /// + /// Gets the template for rendering list items. + /// + protected RenderFragment? ItemTemplate { get; private set; } - private IVirtualizationHelper? _virtualizationHelper; + /// + /// Gets whether the list is virtualized. + /// + protected bool IsVirtualized => ItemSize > 0f; - [Inject] - private IVirtualizationService VirtualizationService { get; set; } = default!; + /// + /// Gets or sets the item template for the list. + /// + [Parameter] + public RenderFragment? ChildContent { get; set; } + + /// + /// Gets or sets the item template for the list. + /// + [Parameter] + public RenderFragment? Item { get; set; } /// - /// Gets the total number of items in the collection. + /// Gets or sets the template of the footer to be rendered at the end of the list. /// - protected abstract int ItemCount { get; } + [Parameter] + public RenderFragment? Footer { get; set; } /// - /// Gets the size (height) of each item in pixels. + /// Gets the size of each item in pixels. /// [Parameter] public float ItemSize { get; set; } /// - /// Gets the s representing a range of items. + /// Gets or sets the fixed item source. /// - /// The start index of the range of items. - /// The number of items in the range. - /// The s representing the given range. - protected abstract IEnumerable GetItems(int start, int count); + [Parameter] + public ICollection? Items { get; set; } - /// - protected override void OnParametersSet() - { - if (ItemSize <= 0f) - { - throw new InvalidOperationException($"Parameter '{nameof(ItemSize)}' must be specified and greater than zero."); - } - } + /// + /// Gets or sets the function retrieving items given a start index. + /// + [Parameter] + public Func>>? ItemsProvider { get; set; } /// - protected override async Task OnAfterRenderAsync(bool firstRender) + public override async Task SetParametersAsync(ParameterView parameters) { - if (firstRender) + await base.SetParametersAsync(parameters); + + if (Items != null) { - _virtualizationHelper = VirtualizationService.CreateVirtualizationHelper(); - _virtualizationHelper.TopSpacerVisible += OnTopSpacerVisible; - _virtualizationHelper.BottomSpacerVisible += OnBottomSpacerVisible; + if (ItemsProvider != null) + { + throw new InvalidOperationException($"{GetType()} cannot accept multiple item sources."); + } - await _virtualizationHelper.InitAsync(_topSpacer, _bottomSpacer); + ItemSource = Items; } - } - - /// - protected override void BuildRenderTree(RenderTreeBuilder builder) - { - var itemsBelow = Math.Max(0, ItemCount - _itemsVisible - _itemsAbove); - - builder.OpenElement(0, "div"); - builder.AddAttribute(1, "key", "top-spacer"); - builder.AddAttribute(2, "style", GetSpacerStyle(_itemsAbove)); - builder.AddElementReferenceCapture(3, elementReference => _topSpacer = elementReference); - builder.CloseElement(); - - builder.OpenRegion(4); - - foreach (var item in GetItems(_itemsAbove, _itemsVisible)) + else if (ItemsProvider != null) { - item.Invoke(builder); + ItemSource = _loadedItems; + } + else + { + throw new InvalidOperationException($"{GetType()} requires either '{nameof(Items)}' or '{nameof(ItemsProvider)}' to be specified and non-null."); } - builder.CloseRegion(); - - builder.OpenElement(5, "div"); - builder.AddAttribute(6, "key", "bottom-spacer"); - builder.AddAttribute(7, "style", GetSpacerStyle(itemsBelow)); - builder.AddElementReferenceCapture(8, elementReference => _bottomSpacer = elementReference); - builder.CloseElement(); - } - - private void OnTopSpacerVisible(object? sender, SpacerEventArgs e) - { - CalcualteItemDistribution(e, out _itemsVisible, out _itemsAbove); - - StateHasChanged(); + ItemTemplate = Item ?? ChildContent; } - private void OnBottomSpacerVisible(object? sender, SpacerEventArgs e) + /// + /// Fetches items using . + /// If is null or items are already being fetched, this method + /// performs nothing. + /// + /// The representing the completion of this operation. + protected async Task FetchItemsAsync() { - CalcualteItemDistribution(e, out _itemsVisible, out var itemsBelow); + if (ItemsProvider == null) + { + return; + } - _itemsAbove = Math.Max(0, ItemCount - itemsBelow - _itemsVisible); + if (Interlocked.Exchange(ref _isFetchingItems, 1) == 0) + { + // TODO: Handle exceptions from the items provider + var items = await ItemsProvider(_loadedItems.Count); - StateHasChanged(); - } + foreach (var item in items) + { + _loadedItems.Enqueue(item); + } - private void CalcualteItemDistribution(SpacerEventArgs e, out int itemsVisible, out int itemsInSpacer) - { - itemsVisible = Math.Max(0, (int)Math.Ceiling(e.ContainerSize / ItemSize) + 2); - itemsInSpacer = Math.Max(0, (int)Math.Floor(e.SpacerSize / ItemSize) - 1); - } + _isFetchingItems = 0; - private string GetSpacerStyle(int itemsInSpacer) - { - return $"height: {itemsInSpacer * ItemSize}px;"; - } - - /// - public async ValueTask DisposeAsync() - { - if (_virtualizationHelper != null) - { - await _virtualizationHelper.DisposeAsync(); + StateHasChanged(); } } } diff --git a/src/Components/Server/src/DependencyInjection/ComponentServiceCollectionExtensions.cs b/src/Components/Server/src/DependencyInjection/ComponentServiceCollectionExtensions.cs index 770ea66a0d00..c7cde9cc79fa 100644 --- a/src/Components/Server/src/DependencyInjection/ComponentServiceCollectionExtensions.cs +++ b/src/Components/Server/src/DependencyInjection/ComponentServiceCollectionExtensions.cs @@ -74,7 +74,6 @@ public static IServerSideBlazorBuilder AddServerSideBlazor(this IServiceCollecti services.AddScoped(); services.AddScoped(); services.AddScoped(); - services.AddScoped(); services.AddScoped(); services.TryAddEnumerable(ServiceDescriptor.Singleton, CircuitOptionsJSInteropDetailedErrorsConfiguration>()); 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a(e){try{u(r.next(e))}catch(e){i(e)}}function s(e){try{u(r.throw(e))}catch(e){i(e)}}function u(e){var t;e.done?o(e.value):(t=e.value,t instanceof n?t:new n((function(e){e(t)}))).then(a,s)}u((r=r.apply(e,t||[])).next())}))},o=this&&this.__generator||function(e,t){var n,r,o,i,a={label:0,sent:function(){if(1&o[0])throw o[1];return o[1]},trys:[],ops:[]};return i={next:s(0),throw:s(1),return:s(2)},"function"==typeof Symbol&&(i[Symbol.iterator]=function(){return this}),i;function s(i){return function(s){return function(i){if(n)throw new TypeError("Generator is already executing.");for(;a;)try{if(n=1,r&&(o=2&i[0]?r.return:i[0]?r.throw||((o=r.return)&&o.call(r),0):r.next)&&!(o=o.call(r,i[1])).done)return o;switch(r=0,o&&(i=[2&i[0],o.value]),i[0]){case 0:case 1:o=i;break;case 4:return a.label++,{value:i[1],done:!1};case 5:a.label++,r=i[1],i=[0];continue;case 7:i=a.ops.pop(),a.trys.pop();continue;default:if(!(o=a.trys,(o=o.length>0&&o[o.length-1])||6!==i[0]&&2!==i[0])){a=0;continue}if(3===i[0]&&(!o||i[1]>o[0]&&i[1]0&&o[o.length-1])||6!==i[0]&&2!==i[0])){a=0;continue}if(3===i[0]&&(!o||i[1]>o[0]&&i[1]0&&o[o.length-1])||6!==i[0]&&2!==i[0])){a=0;continue}if(3===i[0]&&(!o||i[1]>o[0]&&i[1] { - intersectionObserver.unobserve(topSpacer); - intersectionObserver.unobserve(bottomSpacer); - intersectionObserver.observe(topSpacer); - intersectionObserver.observe(bottomSpacer); + intersectionObserver.unobserve(spacerAbove); + intersectionObserver.unobserve(spacerBelow); + intersectionObserver.observe(spacerAbove); + intersectionObserver.observe(spacerBelow); }); - // Observe the bottom spacer to account for collections that resize. - mutationObserver.observe(bottomSpacer, { attributes: true }); + // Observe the spacer below to account for collections that resize. + mutationObserver.observe(spacerAbove, { attributes: true }); + mutationObserver.observe(spacerBelow, { attributes: true }); observersByDotNetId[dotNetHelper._id] = { intersection: intersectionObserver, @@ -51,9 +52,9 @@ function init(dotNetHelper: any, topSpacer: Element, bottomSpacer: Element, root const containerSize = entry.rootBounds?.height; - if (entry.target === topSpacer) { + if (entry.target === spacerAbove) { dotNetHelper.invokeMethodAsync('OnTopSpacerVisible', entry.intersectionRect.top - entry.boundingClientRect.top, containerSize); - } else if (entry.target === bottomSpacer) { + } else if (entry.target === spacerBelow) { dotNetHelper.invokeMethodAsync('OnBottomSpacerVisible', entry.boundingClientRect.bottom - entry.intersectionRect.bottom, containerSize); } else { throw new Error('Unknown intersection target'); diff --git a/src/Components/Web/src/Virtualization/Virtualize.cs b/src/Components/Web/src/Virtualization/Virtualize.cs new file mode 100644 index 000000000000..e0deebc20493 --- /dev/null +++ b/src/Components/Web/src/Virtualization/Virtualize.cs @@ -0,0 +1,146 @@ +// Copyright (c) .NET Foundation. All rights reserved. +// Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information. + +using System; +using System.Linq; +using System.Threading.Tasks; +using Microsoft.AspNetCore.Components.Rendering; +using Microsoft.JSInterop; + +namespace Microsoft.AspNetCore.Components.Virtualization +{ + /// + /// Provides functionality for rendering a virtualized, fixed-size list of items. + /// + /// The context type for the items being rendered. + public sealed class Virtualize : VirtualizeBase, IAsyncDisposable + { + private const string JsFunctionsPrefix = "Blazor._internal.Virtualize"; + + private DotNetObjectReference>? _selfReference; + + private int _itemsBefore; + + private int _itemsVisible; + + private ElementReference _spacerBefore; + + private ElementReference _spacerAfter; + + [Inject] + private IJSRuntime JSRuntime { get; set; } = default!; + + /// + protected override async Task OnAfterRenderAsync(bool firstRender) + { + if (firstRender) + { + _selfReference = DotNetObjectReference.Create>(this); + await JSRuntime.InvokeVoidAsync($"{JsFunctionsPrefix}.init", _selfReference, _spacerBefore, _spacerAfter); + } + } + + /// + protected override void BuildRenderTree(RenderTreeBuilder builder) + { + var itemsAfter = Math.Max(0, ItemSource.Count() - _itemsVisible - _itemsBefore); + + builder.OpenElement(0, "div"); + builder.AddAttribute(1, "style", GetSpacerStyle(_itemsBefore)); + builder.AddElementReferenceCapture(2, elementReference => _spacerBefore = elementReference); + builder.CloseElement(); + + builder.OpenRegion(3); + + if (ItemTemplate != null) + { + var items = IsVirtualized ? ItemSource.Skip(_itemsBefore).Take(_itemsVisible) : ItemSource; + + foreach (var item in items) + { + ItemTemplate(item)(builder); + } + } + + builder.CloseRegion(); + + builder.OpenElement(4, "div"); + builder.AddAttribute(5, "style", GetSpacerStyle(itemsAfter)); + builder.AddElementReferenceCapture(6, elementReference => _spacerAfter = elementReference); + + builder.CloseElement(); + + if (Footer != null) + { + builder.OpenRegion(7); + + Footer.Invoke(builder); + + builder.CloseRegion(); + } + } + + /// + /// Called when the top spacer becomes visible. + /// This method is intended to be invoked only from JavaScript. + /// + /// The new top spacer size. + /// The top spacer's container size. + [JSInvokable] + public void OnTopSpacerVisible(float spacerSize, float containerSize) + { + CalcualteItemDistribution(spacerSize, containerSize, out _itemsVisible, out _itemsBefore); + + StateHasChanged(); + } + + /// + /// Called when the bottom spacer becomes visible. + /// This method is intended to be invoked only from JavaScript. + /// + /// The new bottom spacer size. + /// The bottom spacer's container size. + [JSInvokable] + public void OnBottomSpacerVisible(float spacerSize, float containerSize) + { + CalcualteItemDistribution(spacerSize, containerSize, out _itemsVisible, out var itemsAfter); + + _itemsBefore = Math.Max(0, ItemSource.Count() - itemsAfter - _itemsVisible); + + if (itemsAfter == 0) + { + _ = FetchItemsAsync(); + } + + StateHasChanged(); + } + + private void CalcualteItemDistribution(float spacerSize, float containerSize, out int itemsVisible, out int itemsInSpacer) + { + if (IsVirtualized) + { + itemsVisible = Math.Clamp(ItemSource.Count(), 0, (int)Math.Ceiling(containerSize / ItemSize) + 2); + itemsInSpacer = Math.Max(0, (int)Math.Floor(spacerSize / ItemSize) - 1); + } + else + { + itemsVisible = 0; + itemsInSpacer = 0; + } + } + + private string GetSpacerStyle(int itemsInSpacer) + { + return $"height: {itemsInSpacer * ItemSize}px;"; + } + + /// + public async ValueTask DisposeAsync() + { + if (_selfReference != null) + { + await JSRuntime.InvokeVoidAsync($"{JsFunctionsPrefix}.dispose", _selfReference); + } + } + } +} diff --git a/src/Components/Web/src/Virtualization/WebVirtualizationHelper.cs b/src/Components/Web/src/Virtualization/WebVirtualizationHelper.cs deleted file mode 100644 index 8c39a4b3f634..000000000000 --- a/src/Components/Web/src/Virtualization/WebVirtualizationHelper.cs +++ /dev/null @@ -1,71 +0,0 @@ -// Copyright (c) .NET Foundation. All rights reserved. -// Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information. - -using System; -using System.Threading.Tasks; -using Microsoft.JSInterop; - -namespace Microsoft.AspNetCore.Components.Virtualization -{ - /// - /// Provides functionality for detecting and relaying virtualization events on the web. - /// - public class WebVirtualizationHelper : IVirtualizationHelper - { - private readonly IJSRuntime _jsRuntime; - - private readonly DotNetObjectReference _selfReference; - - /// - public event EventHandler? TopSpacerVisible; - - /// - public event EventHandler? BottomSpacerVisible; - - /// - /// Instantiates a new instance. - /// - /// The dependency. - public WebVirtualizationHelper(IJSRuntime jsRuntime) - { - _jsRuntime = jsRuntime; - _selfReference = DotNetObjectReference.Create(this); - } - - /// - /// Called when the top spacer becomes visible, invoking . - /// This method is intended to be invoked only from JavaScript. - /// - /// The new top spacer size. - /// The top spacer's container size. - [JSInvokable] - public void OnTopSpacerVisible(float spacerSize, float containerSize) - { - TopSpacerVisible?.Invoke(this, new SpacerEventArgs(spacerSize, containerSize)); - } - - /// - /// Called when the bottom spacer becomes visible, invoking . - /// This method is intended to be invoked only from JavaScript. - /// - /// The new bottom spacer size. - /// The bottom spacer's container size. - [JSInvokable] - public void OnBottomSpacerVisible(float spacerSize, float containerSize) - { - BottomSpacerVisible?.Invoke(this, new SpacerEventArgs(spacerSize, containerSize)); - } - - /// - public async ValueTask InitAsync(ElementReference topSpacer, ElementReference bottomSpacer) - { - await _jsRuntime.InvokeVoidAsync("Blazor._internal.Virtualize.init", _selfReference, topSpacer, bottomSpacer); - } - - /// - public async ValueTask DisposeAsync() - { - await _jsRuntime.InvokeVoidAsync("Blazor._internal.Virtualize.dispose", _selfReference); - } - } -} diff --git a/src/Components/Web/src/Virtualization/WebVirtualizationService.cs b/src/Components/Web/src/Virtualization/WebVirtualizationService.cs deleted file mode 100644 index 5694cac20c17..000000000000 --- a/src/Components/Web/src/Virtualization/WebVirtualizationService.cs +++ /dev/null @@ -1,28 +0,0 @@ -// Copyright (c) .NET Foundation. All rights reserved. -// Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information. - -using Microsoft.JSInterop; - -namespace Microsoft.AspNetCore.Components.Virtualization -{ - /// - /// A service that provides web-specific virtualization helpers. - /// - public class WebVirtualizationService : IVirtualizationService - { - private readonly IJSRuntime _jsRuntime; - - /// - /// Instantiates a new instance. - /// - /// The dependency. - public WebVirtualizationService(IJSRuntime jsRuntime) - { - _jsRuntime = jsRuntime; - } - - /// - public IVirtualizationHelper CreateVirtualizationHelper() - => new WebVirtualizationHelper(_jsRuntime); - } -} diff --git a/src/Components/WebAssembly/WebAssembly/src/Hosting/WebAssemblyHostBuilder.cs b/src/Components/WebAssembly/WebAssembly/src/Hosting/WebAssemblyHostBuilder.cs index b5a5ff4754e7..374c4e26a519 100644 --- a/src/Components/WebAssembly/WebAssembly/src/Hosting/WebAssemblyHostBuilder.cs +++ b/src/Components/WebAssembly/WebAssembly/src/Hosting/WebAssemblyHostBuilder.cs @@ -190,7 +190,6 @@ internal void InitializeDefaultServices() Services.AddSingleton(DefaultWebAssemblyJSRuntime.Instance); Services.AddSingleton(WebAssemblyNavigationManager.Instance); Services.AddSingleton(WebAssemblyNavigationInterception.Instance); - Services.AddSingleton(); Services.AddSingleton(provider => new LazyAssemblyLoader(provider)); Services.AddLogging(builder => { builder.AddProvider(new WebAssemblyConsoleLoggerProvider(DefaultWebAssemblyJSRuntime.Instance)); diff --git a/src/Components/test/testassets/BasicTestApp/VirtualizationComponent.razor b/src/Components/test/testassets/BasicTestApp/VirtualizationComponent.razor index 07ec25088cab..f4ef32591511 100644 --- a/src/Components/test/testassets/BasicTestApp/VirtualizationComponent.razor +++ b/src/Components/test/testassets/BasicTestApp/VirtualizationComponent.razor @@ -8,49 +8,116 @@

Scrollable div:

- +
Item @context
 - +
Item @context

- Async items:
+ Infinite scrolling (asynchronously loaded):

- +
Item @context
 - -
+ +
Loading...
- - + + +
+

+ +

+ Infinite scrolling (synchronously loaded):
+

+ + +
Item @context
+ + +
+

+ +

+ Variable item height (asynchronously loaded):
+

+ + +
Item @context
+ + +
+ Loading... +
+ + +
+

+ +

+ Limited items provider (asynchronously loaded):
+

+ + +
Item @context
+ + +
+ @if (itemCount >= itemCountLimit) + { + No more items :( + } + else + { + Loading... + } +
+ +

Viewport as root:
- +

Item @context
 - +
Item @context

@code { + float itemSize = 100; - Random rng = new Random(); - ICollection Items = Enumerable.Range(0, 1000).ToList(); + ICollection fixedItems = Enumerable.Range(0, 1000).ToList(); + + int itemCountLimit = 200; + int itemCount = 0; + + async Task> GetItemsAsync(int startIndex) + { + await Task.Delay(500); + + return Enumerable.Range(startIndex, 50); + } + + async Task> GetLimitedItemsAsync(int startIndex) + { + await Task.Delay(500); + + itemCount = Math.Min(startIndex + 50, itemCountLimit); + return Enumerable.Range(startIndex, itemCount - startIndex); + } - Task> GetItems(Range range) + Task> GetSingleItem(int index) { - return Task.Delay(500).ContinueWith>(_ => - Enumerable.Range(range.Start.Value, range.End.Value - range.Start.Value)); + return Task.FromResult(Enumerable.Repeat(index, 1)); } } From 1b76cff6f8dfb3d0c55419f29b0387a0780a7799 Mon Sep 17 00:00:00 2001 From: Mackinnon Buck Date: Fri, 24 Jul 2020 17:56:12 -0700 Subject: [PATCH 06/21] Improved design which now supports fixed lists of fetched items --- .../src/Virtualization/VirtualizeBase.cs | 128 ------------------ .../Web/src/Virtualization/InfiniteScroll.cs | 80 +++++++++++ .../Virtualization/ItemsProviderDelegate.cs | 19 +++ .../src/Virtualization/ItemsProviderResult.cs | 35 +++++ .../{Virtualize.cs => VirtualizeBase.cs} | 113 +++++++++------- .../src/Virtualization/VirtualizeDeferred.cs | 109 +++++++++++++++ .../Web/src/Virtualization/VirtualizeFixed.cs | 53 ++++++++ .../VirtualizationComponent.razor | 79 ++++------- 8 files changed, 385 insertions(+), 231 deletions(-) delete mode 100644 src/Components/Components/src/Virtualization/VirtualizeBase.cs create mode 100644 src/Components/Web/src/Virtualization/InfiniteScroll.cs create mode 100644 src/Components/Web/src/Virtualization/ItemsProviderDelegate.cs create mode 100644 src/Components/Web/src/Virtualization/ItemsProviderResult.cs rename src/Components/Web/src/Virtualization/{Virtualize.cs => VirtualizeBase.cs} (54%) create mode 100644 src/Components/Web/src/Virtualization/VirtualizeDeferred.cs create mode 100644 src/Components/Web/src/Virtualization/VirtualizeFixed.cs diff --git a/src/Components/Components/src/Virtualization/VirtualizeBase.cs b/src/Components/Components/src/Virtualization/VirtualizeBase.cs deleted file mode 100644 index 6fab58bf665f..000000000000 --- a/src/Components/Components/src/Virtualization/VirtualizeBase.cs +++ /dev/null @@ -1,128 +0,0 @@ -// Copyright (c) .NET Foundation. All rights reserved. -// Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information. - -using System; -using System.Collections.Concurrent; -using System.Collections.Generic; -using System.Threading; -using System.Threading.Tasks; - -namespace Microsoft.AspNetCore.Components.Virtualization -{ - /// - /// Provides common functionality for virtualized lists. - /// - /// The context type for the items being rendered. - public abstract class VirtualizeBase : ComponentBase - { - private readonly ConcurrentQueue _loadedItems = new ConcurrentQueue(); - - private int _isFetchingItems; - - /// - /// Gets an enumerable of all list items in memory. - /// - protected IEnumerable ItemSource { get; private set; } = default!; - - /// - /// Gets the template for rendering list items. - /// - protected RenderFragment? ItemTemplate { get; private set; } - - /// - /// Gets whether the list is virtualized. - /// - protected bool IsVirtualized => ItemSize > 0f; - - /// - /// Gets or sets the item template for the list. - /// - [Parameter] - public RenderFragment? ChildContent { get; set; } - - /// - /// Gets or sets the item template for the list. - /// - [Parameter] - public RenderFragment? Item { get; set; } - - /// - /// Gets or sets the template of the footer to be rendered at the end of the list. - /// - [Parameter] - public RenderFragment? Footer { get; set; } - - /// - /// Gets the size of each item in pixels. - /// - [Parameter] - public float ItemSize { get; set; } - - /// - /// Gets or sets the fixed item source. - /// - [Parameter] - public ICollection? Items { get; set; } - - /// - /// Gets or sets the function retrieving items given a start index. - /// - [Parameter] - public Func>>? ItemsProvider { get; set; } - - /// - public override async Task SetParametersAsync(ParameterView parameters) - { - await base.SetParametersAsync(parameters); - - if (Items != null) - { - if (ItemsProvider != null) - { - throw new InvalidOperationException($"{GetType()} cannot accept multiple item sources."); - } - - ItemSource = Items; - } - else if (ItemsProvider != null) - { - ItemSource = _loadedItems; - } - else - { - throw new InvalidOperationException($"{GetType()} requires either '{nameof(Items)}' or '{nameof(ItemsProvider)}' to be specified and non-null."); - } - - ItemTemplate = Item ?? ChildContent; - } - - /// - /// Fetches items using . - /// If is null or items are already being fetched, this method - /// performs nothing. - /// - /// The representing the completion of this operation. - protected async Task FetchItemsAsync() - { - if (ItemsProvider == null) - { - return; - } - - if (Interlocked.Exchange(ref _isFetchingItems, 1) == 0) - { - // TODO: Handle exceptions from the items provider - var items = await ItemsProvider(_loadedItems.Count); - - foreach (var item in items) - { - _loadedItems.Enqueue(item); - } - - _isFetchingItems = 0; - - StateHasChanged(); - } - } - } -} diff --git a/src/Components/Web/src/Virtualization/InfiniteScroll.cs b/src/Components/Web/src/Virtualization/InfiniteScroll.cs new file mode 100644 index 000000000000..c12e0adeab2b --- /dev/null +++ b/src/Components/Web/src/Virtualization/InfiniteScroll.cs @@ -0,0 +1,80 @@ +// Copyright (c) .NET Foundation. All rights reserved. +// Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information. + +using System; +using System.Collections.Generic; +using System.Linq; +using System.Threading.Tasks; +using Microsoft.AspNetCore.Components.Rendering; + +namespace Microsoft.AspNetCore.Components.Virtualization +{ + /// + /// Provides functionality for rendering a virtualized list from a source of unknown size. + /// + /// + public class InfiniteScroll : ComponentBase + { + /// + /// Gets or sets the item template for the list. + /// + [Parameter] + public RenderFragment Item { get; set; } = default!; + + /// + /// Gets or sets the template for the footer of the list. + /// + [Parameter] + public RenderFragment Footer { get; set; } = default!; + + /// + /// Gets or sets the function retrieving items given a start index. + /// + [Parameter] + public Func>> ItemsProvider { get; set; } = default!; + + /// + /// Gets the size of each item in pixels. + /// + [Parameter] + public float ItemSize { get; set; } + + private int _itemCount; + + /// + protected override void OnParametersSet() + { + if (Item == null) + { + throw new InvalidOperationException( + $"{GetType()} requires template parameter '{nameof(Item)}' to be specified and non-null."); + } + + if (Footer == null) + { + throw new InvalidOperationException( + $"{GetType()} requires template parameter '{nameof(Footer)}' to be specified and non-null."); + } + } + + /// + protected override void BuildRenderTree(RenderTreeBuilder builder) + { + builder.OpenComponent>(0); + builder.AddAttribute(1, "Item", Item); + builder.AddAttribute(2, "Placeholder", Footer); + builder.AddAttribute(3, "ItemsProvider", (ItemsProviderDelegate)FetchItems); + builder.AddAttribute(4, "ItemSize", ItemSize); + builder.CloseComponent(); + } + + private async Task> FetchItems(int start, int count) + { + var result = await ItemsProvider(start); + + _itemCount += result.Count(); + + return new ItemsProviderResult(result, _itemCount + 1); + } + } +} diff --git a/src/Components/Web/src/Virtualization/ItemsProviderDelegate.cs b/src/Components/Web/src/Virtualization/ItemsProviderDelegate.cs new file mode 100644 index 000000000000..01f6f31543ec --- /dev/null +++ b/src/Components/Web/src/Virtualization/ItemsProviderDelegate.cs @@ -0,0 +1,19 @@ +// Copyright (c) .NET Foundation. All rights reserved. +// Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information. + +using System.Threading.Tasks; + +namespace Microsoft.AspNetCore.Components.Virtualization +{ + /// + /// A function that provides items to a virtualized source. + /// + /// The type of the context for each item in the list. + /// The start index of the data segment requested. + /// + /// The requested number of items to be provided. The actual number of provided items does not need to match + /// this value. + /// + /// A whose result is a upon successful completion. + public delegate Task> ItemsProviderDelegate(int startIndex, int requestedCount); +} diff --git a/src/Components/Web/src/Virtualization/ItemsProviderResult.cs b/src/Components/Web/src/Virtualization/ItemsProviderResult.cs new file mode 100644 index 000000000000..ed8909b98fca --- /dev/null +++ b/src/Components/Web/src/Virtualization/ItemsProviderResult.cs @@ -0,0 +1,35 @@ +// Copyright (c) .NET Foundation. All rights reserved. +// Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information. + +using System.Collections.Generic; + +namespace Microsoft.AspNetCore.Components.Virtualization +{ + /// + /// Represents the result of a . + /// + /// The type of the context for each item in the list. + public readonly struct ItemsProviderResult + { + /// + /// The list of requested item contexts. + /// + public IEnumerable Items { get; } + + /// + /// The total item count in the source generating the items provided. + /// + public int TotalItemCount { get; } + + /// + /// Instantiates a new instance. + /// + /// The list of requested item contexts. + /// The total item count in the source generating the items provided. + public ItemsProviderResult(IEnumerable items, int totalItemCount) + { + Items = items; + TotalItemCount = totalItemCount; + } + } +} diff --git a/src/Components/Web/src/Virtualization/Virtualize.cs b/src/Components/Web/src/Virtualization/VirtualizeBase.cs similarity index 54% rename from src/Components/Web/src/Virtualization/Virtualize.cs rename to src/Components/Web/src/Virtualization/VirtualizeBase.cs index e0deebc20493..47eb3659388c 100644 --- a/src/Components/Web/src/Virtualization/Virtualize.cs +++ b/src/Components/Web/src/Virtualization/VirtualizeBase.cs @@ -1,8 +1,7 @@ // Copyright (c) .NET Foundation. All rights reserved. -// Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information. +// Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information. using System; -using System.Linq; using System.Threading.Tasks; using Microsoft.AspNetCore.Components.Rendering; using Microsoft.JSInterop; @@ -10,18 +9,14 @@ namespace Microsoft.AspNetCore.Components.Virtualization { /// - /// Provides functionality for rendering a virtualized, fixed-size list of items. + /// Provides common functionality for virtualized lists. /// /// The context type for the items being rendered. - public sealed class Virtualize : VirtualizeBase, IAsyncDisposable + public abstract class VirtualizeBase : ComponentBase, IAsyncDisposable { private const string JsFunctionsPrefix = "Blazor._internal.Virtualize"; - private DotNetObjectReference>? _selfReference; - - private int _itemsBefore; - - private int _itemsVisible; + private DotNetObjectReference>? _selfReference; private ElementReference _spacerBefore; @@ -30,12 +25,56 @@ public sealed class Virtualize : VirtualizeBase, IAsyncDisposable [Inject] private IJSRuntime JSRuntime { get; set; } = default!; + /// + /// Gets the number of items rendered before the visible part of the container. + /// + protected int ItemsBefore { get; private set; } + + /// + /// Gets the number of items the container can visibly fit. + /// + protected int VisibleItemCapacity { get; private set; } + + /// + /// Gets the number of items currently visible within the container. + /// + protected int ItemsVisible { get; private set; } + + /// + /// Gets the total number of items. + /// + protected abstract int ItemCount { get; } + + /// + /// Gets the size of each item in pixels. + /// + [Parameter] + public float ItemSize { get; set; } + + /// + /// Renders the visible items in the list. + /// + /// A to receive the render output. + protected abstract void RenderItems(RenderTreeBuilder builder); + + /// + public override async Task SetParametersAsync(ParameterView parameters) + { + await base.SetParametersAsync(parameters); + + if (ItemSize <= 0) + { + throw new InvalidOperationException( + $"{GetType()} requires a positive value for parameter '{nameof(ItemSize)}' to perform virtualization."); + } + } + /// protected override async Task OnAfterRenderAsync(bool firstRender) { if (firstRender) { - _selfReference = DotNetObjectReference.Create>(this); + _selfReference = DotNetObjectReference.Create>(this); await JSRuntime.InvokeVoidAsync($"{JsFunctionsPrefix}.init", _selfReference, _spacerBefore, _spacerAfter); } } @@ -43,24 +82,16 @@ protected override async Task OnAfterRenderAsync(bool firstRender) /// protected override void BuildRenderTree(RenderTreeBuilder builder) { - var itemsAfter = Math.Max(0, ItemSource.Count() - _itemsVisible - _itemsBefore); + var itemsAfter = Math.Max(0, ItemCount - ItemsVisible - ItemsBefore); builder.OpenElement(0, "div"); - builder.AddAttribute(1, "style", GetSpacerStyle(_itemsBefore)); + builder.AddAttribute(1, "style", GetSpacerStyle(ItemsBefore)); builder.AddElementReferenceCapture(2, elementReference => _spacerBefore = elementReference); builder.CloseElement(); builder.OpenRegion(3); - if (ItemTemplate != null) - { - var items = IsVirtualized ? ItemSource.Skip(_itemsBefore).Take(_itemsVisible) : ItemSource; - - foreach (var item in items) - { - ItemTemplate(item)(builder); - } - } + RenderItems(builder); builder.CloseRegion(); @@ -69,15 +100,6 @@ protected override void BuildRenderTree(RenderTreeBuilder builder) builder.AddElementReferenceCapture(6, elementReference => _spacerAfter = elementReference); builder.CloseElement(); - - if (Footer != null) - { - builder.OpenRegion(7); - - Footer.Invoke(builder); - - builder.CloseRegion(); - } } /// @@ -89,7 +111,7 @@ protected override void BuildRenderTree(RenderTreeBuilder builder) [JSInvokable] public void OnTopSpacerVisible(float spacerSize, float containerSize) { - CalcualteItemDistribution(spacerSize, containerSize, out _itemsVisible, out _itemsBefore); + ItemsBefore = CalcualteItemDistribution(spacerSize, containerSize); StateHasChanged(); } @@ -103,36 +125,23 @@ public void OnTopSpacerVisible(float spacerSize, float containerSize) [JSInvokable] public void OnBottomSpacerVisible(float spacerSize, float containerSize) { - CalcualteItemDistribution(spacerSize, containerSize, out _itemsVisible, out var itemsAfter); - - _itemsBefore = Math.Max(0, ItemSource.Count() - itemsAfter - _itemsVisible); + var itemsAfter = CalcualteItemDistribution(spacerSize, containerSize); - if (itemsAfter == 0) - { - _ = FetchItemsAsync(); - } + ItemsBefore = Math.Max(0, ItemCount - itemsAfter - ItemsVisible); StateHasChanged(); } - private void CalcualteItemDistribution(float spacerSize, float containerSize, out int itemsVisible, out int itemsInSpacer) + private int CalcualteItemDistribution(float spacerSize, float containerSize) { - if (IsVirtualized) - { - itemsVisible = Math.Clamp(ItemSource.Count(), 0, (int)Math.Ceiling(containerSize / ItemSize) + 2); - itemsInSpacer = Math.Max(0, (int)Math.Floor(spacerSize / ItemSize) - 1); - } - else - { - itemsVisible = 0; - itemsInSpacer = 0; - } + VisibleItemCapacity = (int)Math.Ceiling(containerSize / ItemSize) + 2; + ItemsVisible = Math.Clamp(ItemCount, 0, VisibleItemCapacity); + + return Math.Max(0, (int)Math.Floor(spacerSize / ItemSize) - 1); } private string GetSpacerStyle(int itemsInSpacer) - { - return $"height: {itemsInSpacer * ItemSize}px;"; - } + => $"height: {itemsInSpacer * ItemSize}px;"; /// public async ValueTask DisposeAsync() diff --git a/src/Components/Web/src/Virtualization/VirtualizeDeferred.cs b/src/Components/Web/src/Virtualization/VirtualizeDeferred.cs new file mode 100644 index 000000000000..91cb7b39dd9c --- /dev/null +++ b/src/Components/Web/src/Virtualization/VirtualizeDeferred.cs @@ -0,0 +1,109 @@ +// Copyright (c) .NET Foundation. All rights reserved. +// Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information. + +using System; +using System.Collections.Concurrent; +using System.Linq; +using System.Threading; +using System.Threading.Tasks; +using Microsoft.AspNetCore.Components.Rendering; + +namespace Microsoft.AspNetCore.Components.Virtualization +{ + /// + /// Provides functionality for rendering a virtualized list from a deferred source. + /// + /// The context type for the items being rendered. + public class VirtualizeDeferred : VirtualizeBase + { + private readonly ConcurrentQueue _loadedItems = new ConcurrentQueue(); + + private int _isFetchingItems; + + private int _itemCount; + + /// + /// Gets or sets the item template for the list. + /// + [Parameter] + public RenderFragment Item { get; set; } = default!; + + /// + /// Gets or sets the template for items that have not yet been loaded in memory. + /// + [Parameter] + public RenderFragment Placeholder { get; set; } = default!; + + /// + /// Gets or sets the function providing items to the list. + /// + [Parameter] + public ItemsProviderDelegate ItemsProvider { get; set; } = default!; + + /// + protected override int ItemCount => _itemCount; + + /// + protected override void OnParametersSet() + { + if (Item == null) + { + throw new InvalidOperationException($"{GetType()} requires the template parameter '{nameof(Item)}' to be specified."); + } + + if (Placeholder == null) + { + throw new InvalidOperationException($"{GetType()} requires the template parameter '{nameof(Placeholder)}' to be specified."); + } + + if (ItemsProvider == null) + { + throw new InvalidOperationException($"{GetType()} requires a non-null parameter '{nameof(ItemsProvider)}'."); + } + } + + /// + protected override void RenderItems(RenderTreeBuilder builder) + { + var itemsRendered = 0; + + foreach (var item in _loadedItems.Skip(ItemsBefore).Take(ItemsVisible)) + { + Item(item)(builder); + itemsRendered++; + } + + for (; itemsRendered < ItemsVisible; itemsRendered++) + { + Placeholder(ItemsBefore + ItemsVisible + itemsRendered)(builder); + } + + var itemsToFetch = ItemsBefore + VisibleItemCapacity - _loadedItems.Count; + + if (itemsToFetch > 0) + { + _ = FetchItemsAsync(itemsToFetch); + } + } + + private async Task FetchItemsAsync(int count) + { + if (Interlocked.Exchange(ref _isFetchingItems, 1) == 0) + { + // TODO: Handle exceptions from the items provider + var result = await ItemsProvider(_loadedItems.Count, count); + + _itemCount = result.TotalItemCount; + + foreach (var item in result.Items) + { + _loadedItems.Enqueue(item); + } + + _isFetchingItems = 0; + + StateHasChanged(); + } + } + } +} diff --git a/src/Components/Web/src/Virtualization/VirtualizeFixed.cs b/src/Components/Web/src/Virtualization/VirtualizeFixed.cs new file mode 100644 index 000000000000..aa23062d3677 --- /dev/null +++ b/src/Components/Web/src/Virtualization/VirtualizeFixed.cs @@ -0,0 +1,53 @@ +// Copyright (c) .NET Foundation. All rights reserved. +// Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information. + +using System; +using System.Collections.Generic; +using System.Linq; +using Microsoft.AspNetCore.Components.Rendering; + +namespace Microsoft.AspNetCore.Components.Virtualization +{ + /// + /// Provides functionality for rendering a virtualized fixed list of items. + /// + /// The context type for the items being rendered. + public sealed class VirtualizeFixed : VirtualizeBase + { + /// + /// Gets or sets the item template for the list. + /// + [Parameter] + public RenderFragment? ChildContent { get; set; } + + /// + /// Gets or sets the fixed item source. + /// + [Parameter] + public ICollection Items { get; set; } = default!; + + /// + protected override int ItemCount => Items.Count; + + /// + protected override void OnParametersSet() + { + if (Items == null) + { + throw new InvalidOperationException($"{GetType()} requires a non-null parameter '{nameof(Items)}'."); + } + } + + /// + protected override void RenderItems(RenderTreeBuilder builder) + { + if (ChildContent != null) + { + foreach (var item in Items.Skip(ItemsBefore).Take(ItemsVisible)) + { + ChildContent(item)(builder); + } + } + } + } +} diff --git a/src/Components/test/testassets/BasicTestApp/VirtualizationComponent.razor b/src/Components/test/testassets/BasicTestApp/VirtualizationComponent.razor index f4ef32591511..9291e7e0fae2 100644 --- a/src/Components/test/testassets/BasicTestApp/VirtualizationComponent.razor +++ b/src/Components/test/testassets/BasicTestApp/VirtualizationComponent.razor @@ -6,100 +6,78 @@

- Scrollable div:
+ Stacked lists (fixed):

- +
Item @context
- - + +
Item @context
- +

Infinite scrolling (asynchronously loaded):

- +
Item @context
 - -
+
+
Loading...
- - +
+

Infinite scrolling (synchronously loaded):

- +
Item @context
 - -
-

- -

- Variable item height (asynchronously loaded):
-

- - -
Item @context
- - -
+
+
Loading...
- - +
+

- Limited items provider (asynchronously loaded):
+ Deferred:

- +
Item @context
 - -
- @if (itemCount >= itemCountLimit) - { - No more items :( - } - else - { - Loading... - } -
- - + +
Loading...
+ +

- Viewport as root:
- + Viewport as root (fixed):
+

Item @context
- - + +
Item @context
- +

@code { - float itemSize = 100; ICollection fixedItems = Enumerable.Range(0, 1000).ToList(); int itemCountLimit = 200; - int itemCount = 0; async Task> GetItemsAsync(int startIndex) { @@ -108,12 +86,11 @@ return Enumerable.Range(startIndex, 50); } - async Task> GetLimitedItemsAsync(int startIndex) + async Task> GetLimitedItemsAsync(int startIndex, int count) { await Task.Delay(500); - itemCount = Math.Min(startIndex + 50, itemCountLimit); - return Enumerable.Range(startIndex, itemCount - startIndex); + return new ItemsProviderResult(Enumerable.Range(startIndex, count), itemCountLimit); } Task> GetSingleItem(int index) From dbd87e783d8093ae4f7b7478d8a7e1e2374f3e16 Mon Sep 17 00:00:00 2001 From: Mackinnon Buck Date: Mon, 27 Jul 2020 14:13:50 -0700 Subject: [PATCH 07/21] Support for bubbling exceptions thrown in ItemsProvider. --- .../Web.JS/dist/Release/blazor.server.js | 2 +- .../Web.JS/dist/Release/blazor.webassembly.js | 2 +- src/Components/Web.JS/src/Virtualize.ts | 4 +- .../Virtualization/IVirtualizeJsCallbacks.cs | 11 ++++ .../Web/src/Virtualization/InfiniteScroll.cs | 16 +++--- .../Web/src/Virtualization/VirtualizeBase.cs | 34 +++--------- .../src/Virtualization/VirtualizeDeferred.cs | 46 ++++++++++------ .../src/Virtualization/VirtualizeJsInterop.cs | 52 +++++++++++++++++++ .../VirtualizationComponent.razor | 22 +++++--- 9 files changed, 130 insertions(+), 59 deletions(-) create mode 100644 src/Components/Web/src/Virtualization/IVirtualizeJsCallbacks.cs create mode 100644 src/Components/Web/src/Virtualization/VirtualizeJsInterop.cs diff --git a/src/Components/Web.JS/dist/Release/blazor.server.js b/src/Components/Web.JS/dist/Release/blazor.server.js index 01d6c28e6174..b40823a0f35f 100644 --- a/src/Components/Web.JS/dist/Release/blazor.server.js +++ b/src/Components/Web.JS/dist/Release/blazor.server.js @@ -5,7 +5,7 @@ * @author Feross Aboukhadijeh * @license MIT */ -var r=n(55),o=n(56),i=n(57);function a(){return 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7:i=a.ops.pop(),a.trys.pop();continue;default:if(!(o=a.trys,(o=o.length>0&&o[o.length-1])||6!==i[0]&&2!==i[0])){a=0;continue}if(3===i[0]&&(!o||i[1]>o[0]&&i[1]0&&o[o.length-1])||6!==i[0]&&2!==i[0])){a=0;continue}if(3===i[0]&&(!o||i[1]>o[0]&&i[1]0&&o[o.length-1])||6!==i[0]&&2!==i[0])){a=0;continue}if(3===i[0]&&(!o||i[1]>o[0]&&i[1] /// - public class InfiniteScroll : ComponentBase + public sealed class InfiniteScroll : ComponentBase { /// /// Gets or sets the item template for the list. @@ -31,7 +30,7 @@ public class InfiniteScroll : ComponentBase /// Gets or sets the function retrieving items given a start index. /// [Parameter] - public Func>> ItemsProvider { get; set; } = default!; + public Func> ItemsProvider { get; set; } = default!; /// /// Gets the size of each item in pixels. @@ -70,11 +69,16 @@ protected override void BuildRenderTree(RenderTreeBuilder builder) private async Task> FetchItems(int start, int count) { - var result = await ItemsProvider(start); + var items = new List(); - _itemCount += result.Count(); + await foreach (var item in ItemsProvider(start)) + { + items.Add(item); + } + + _itemCount += items.Count; - return new ItemsProviderResult(result, _itemCount + 1); + return new ItemsProviderResult(items, _itemCount + 1); } } } diff --git a/src/Components/Web/src/Virtualization/VirtualizeBase.cs b/src/Components/Web/src/Virtualization/VirtualizeBase.cs index 47eb3659388c..86b21664e89d 100644 --- a/src/Components/Web/src/Virtualization/VirtualizeBase.cs +++ b/src/Components/Web/src/Virtualization/VirtualizeBase.cs @@ -12,11 +12,9 @@ namespace Microsoft.AspNetCore.Components.Virtualization /// Provides common functionality for virtualized lists. /// /// The context type for the items being rendered. - public abstract class VirtualizeBase : ComponentBase, IAsyncDisposable + public abstract class VirtualizeBase : ComponentBase, IVirtualizeJsCallbacks, IAsyncDisposable { - private const string JsFunctionsPrefix = "Blazor._internal.Virtualize"; - - private DotNetObjectReference>? _selfReference; + private VirtualizeJsInterop _jsInterop = default!; private ElementReference _spacerBefore; @@ -62,6 +60,8 @@ public override async Task SetParametersAsync(ParameterView parameters) { await base.SetParametersAsync(parameters); + _jsInterop ??= new VirtualizeJsInterop(this, JSRuntime); + if (ItemSize <= 0) { throw new InvalidOperationException( @@ -74,8 +74,7 @@ protected override async Task OnAfterRenderAsync(bool firstRender) { if (firstRender) { - _selfReference = DotNetObjectReference.Create>(this); - await JSRuntime.InvokeVoidAsync($"{JsFunctionsPrefix}.init", _selfReference, _spacerBefore, _spacerAfter); + await _jsInterop.InitAsync(_spacerBefore, _spacerAfter); } } @@ -102,28 +101,14 @@ protected override void BuildRenderTree(RenderTreeBuilder builder) builder.CloseElement(); } - /// - /// Called when the top spacer becomes visible. - /// This method is intended to be invoked only from JavaScript. - /// - /// The new top spacer size. - /// The top spacer's container size. - [JSInvokable] - public void OnTopSpacerVisible(float spacerSize, float containerSize) + void IVirtualizeJsCallbacks.OnBeforeSpacerVisible(float spacerSize, float containerSize) { ItemsBefore = CalcualteItemDistribution(spacerSize, containerSize); StateHasChanged(); } - /// - /// Called when the bottom spacer becomes visible. - /// This method is intended to be invoked only from JavaScript. - /// - /// The new bottom spacer size. - /// The bottom spacer's container size. - [JSInvokable] - public void OnBottomSpacerVisible(float spacerSize, float containerSize) + void IVirtualizeJsCallbacks.OnBottomSpacerVisible(float spacerSize, float containerSize) { var itemsAfter = CalcualteItemDistribution(spacerSize, containerSize); @@ -146,10 +131,7 @@ private string GetSpacerStyle(int itemsInSpacer) /// public async ValueTask DisposeAsync() { - if (_selfReference != null) - { - await JSRuntime.InvokeVoidAsync($"{JsFunctionsPrefix}.dispose", _selfReference); - } + await _jsInterop.DisposeAsync(); } } } diff --git a/src/Components/Web/src/Virtualization/VirtualizeDeferred.cs b/src/Components/Web/src/Virtualization/VirtualizeDeferred.cs index 91cb7b39dd9c..edf723c9b237 100644 --- a/src/Components/Web/src/Virtualization/VirtualizeDeferred.cs +++ b/src/Components/Web/src/Virtualization/VirtualizeDeferred.cs @@ -3,6 +3,7 @@ using System; using System.Collections.Concurrent; +using System.Diagnostics; using System.Linq; using System.Threading; using System.Threading.Tasks; @@ -14,14 +15,16 @@ namespace Microsoft.AspNetCore.Components.Virtualization /// Provides functionality for rendering a virtualized list from a deferred source. ///
/// The context type for the items being rendered. - public class VirtualizeDeferred : VirtualizeBase + public sealed class VirtualizeDeferred : VirtualizeBase { private readonly ConcurrentQueue _loadedItems = new ConcurrentQueue(); - private int _isFetchingItems; + private int _fetchState; private int _itemCount; + private Task? _fetchTask; + /// /// Gets or sets the item template for the list. /// @@ -62,6 +65,23 @@ protected override void OnParametersSet() } } + /// + protected override async Task OnAfterRenderAsync(bool firstRender) + { + await base.OnAfterRenderAsync(firstRender); + + if (Interlocked.CompareExchange(ref _fetchState, 2, 1) == 1) + { + Debug.Assert(_fetchTask != null); + + await _fetchTask; + + _fetchState = 0; + + StateHasChanged(); + } + } + /// protected override void RenderItems(RenderTreeBuilder builder) { @@ -80,29 +100,21 @@ protected override void RenderItems(RenderTreeBuilder builder) var itemsToFetch = ItemsBefore + VisibleItemCapacity - _loadedItems.Count; - if (itemsToFetch > 0) + if (itemsToFetch > 0 && Interlocked.CompareExchange(ref _fetchState, 1, 0) == 0) { - _ = FetchItemsAsync(itemsToFetch); + _fetchTask = FetchItemsAsync(itemsToFetch); } } private async Task FetchItemsAsync(int count) { - if (Interlocked.Exchange(ref _isFetchingItems, 1) == 0) - { - // TODO: Handle exceptions from the items provider - var result = await ItemsProvider(_loadedItems.Count, count); + var result = await ItemsProvider(_loadedItems.Count, count); - _itemCount = result.TotalItemCount; + _itemCount = result.TotalItemCount; - foreach (var item in result.Items) - { - _loadedItems.Enqueue(item); - } - - _isFetchingItems = 0; - - StateHasChanged(); + foreach (var item in result.Items) + { + _loadedItems.Enqueue(item); } } } diff --git a/src/Components/Web/src/Virtualization/VirtualizeJsInterop.cs b/src/Components/Web/src/Virtualization/VirtualizeJsInterop.cs new file mode 100644 index 000000000000..d12929390953 --- /dev/null +++ b/src/Components/Web/src/Virtualization/VirtualizeJsInterop.cs @@ -0,0 +1,52 @@ +// Copyright (c) .NET Foundation. All rights reserved. +// Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information. + +using System; +using System.Threading.Tasks; +using Microsoft.JSInterop; + +namespace Microsoft.AspNetCore.Components.Virtualization +{ + internal class VirtualizeJsInterop : IAsyncDisposable + { + private const string JsFunctionsPrefix = "Blazor._internal.Virtualize"; + + private readonly IVirtualizeJsCallbacks _owner; + + private readonly IJSRuntime _jsRuntime; + + private DotNetObjectReference? _selfReference; + + public VirtualizeJsInterop(IVirtualizeJsCallbacks owner, IJSRuntime jsRuntime) + { + _owner = owner; + _jsRuntime = jsRuntime; + } + + public async ValueTask InitAsync(ElementReference spacerBefore, ElementReference spacerAfter) + { + _selfReference = DotNetObjectReference.Create(this); + await _jsRuntime.InvokeVoidAsync($"{JsFunctionsPrefix}.init", _selfReference, spacerBefore, spacerAfter); + } + + [JSInvokable] + public void OnSpacerBeforeVisible(float spacerSize, float containerSize) + { + _owner.OnBeforeSpacerVisible(spacerSize, containerSize); + } + + [JSInvokable] + public void OnSpacerAfterVisible(float spacerSize, float containerSize) + { + _owner.OnBottomSpacerVisible(spacerSize, containerSize); + } + + public async ValueTask DisposeAsync() + { + if (_selfReference != null) + { + await _jsRuntime.InvokeVoidAsync($"{JsFunctionsPrefix}.dispose", _selfReference); + } + } + } +} diff --git a/src/Components/test/testassets/BasicTestApp/VirtualizationComponent.razor b/src/Components/test/testassets/BasicTestApp/VirtualizationComponent.razor index 9291e7e0fae2..5c3cbbfca25e 100644 --- a/src/Components/test/testassets/BasicTestApp/VirtualizationComponent.razor +++ b/src/Components/test/testassets/BasicTestApp/VirtualizationComponent.razor @@ -18,7 +18,7 @@

- Infinite scrolling (asynchronously loaded):
+ Infinite scrolling (large batch size):

@@ -34,7 +34,7 @@

- Infinite scrolling (synchronously loaded):
+ Infinite scrolling (small batch size):

@@ -79,11 +79,19 @@ int itemCountLimit = 200; - async Task> GetItemsAsync(int startIndex) + async IAsyncEnumerable GetItemsAsync(int startIndex) { await Task.Delay(500); - return Enumerable.Range(startIndex, 50); + for (int i = 0; i < 50; i++) + { + yield return startIndex + i; + } + + if (startIndex >= 300) + { + throw new InvalidOperationException("Request timed out."); + } } async Task> GetLimitedItemsAsync(int startIndex, int count) @@ -93,8 +101,10 @@ return new ItemsProviderResult(Enumerable.Range(startIndex, count), itemCountLimit); } - Task> GetSingleItem(int index) + async IAsyncEnumerable GetSingleItem(int index) { - return Task.FromResult(Enumerable.Repeat(index, 1)); + await Task.Delay(5); + + yield return index; } } From 25059f9dfc7d780453638158ded74aa0c854f9e5 Mon Sep 17 00:00:00 2001 From: Mackinnon Buck Date: Mon, 27 Jul 2020 15:34:16 -0700 Subject: [PATCH 08/21] Small improvements --- .../ComponentServiceCollectionExtensions.cs | 1 - .../Web.JS/dist/Release/blazor.server.js | 2 +- .../Web.JS/dist/Release/blazor.webassembly.js | 2 +- src/Components/Web.JS/src/Virtualize.ts | 48 +++++++++++-------- .../src/Virtualization/VirtualizeDeferred.cs | 2 +- .../VirtualizationComponent.razor | 2 +- 6 files changed, 32 insertions(+), 25 deletions(-) diff --git a/src/Components/Server/src/DependencyInjection/ComponentServiceCollectionExtensions.cs b/src/Components/Server/src/DependencyInjection/ComponentServiceCollectionExtensions.cs index c7cde9cc79fa..cd65b7fdc4f1 100644 --- a/src/Components/Server/src/DependencyInjection/ComponentServiceCollectionExtensions.cs +++ b/src/Components/Server/src/DependencyInjection/ComponentServiceCollectionExtensions.cs @@ -9,7 +9,6 @@ using Microsoft.AspNetCore.Components.Server; 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intersectionObserver, + mutationObserverBefore, + mutationObserverAfter, }; + function createSpacerMutationObserver(spacer: Element): MutationObserver { + // Without the use of thresholds, IntersectionObserver only detects binary changes in visibility, + // so if a spacer gets resized but remains visible, no additional callbacks will occur. By unobserving + // and reobserving spacers when they get resized, the intersection callback will re-run if they remain visible. + const mutationObserver = new MutationObserver((): void => { + intersectionObserver.unobserve(spacer); + intersectionObserver.observe(spacer); + }); + + mutationObserver.observe(spacer, { attributes: true }); + + return mutationObserver; + } + function intersectionCallback(entries: IntersectionObserverEntry[]): void { entries.forEach((entry): void => { if (!entry.isIntersecting) { @@ -52,9 +59,9 @@ function init(dotNetHelper: any, spacerAbove: Element, spacerBelow: Element, roo const containerSize = entry.rootBounds?.height; - if (entry.target === spacerAbove) { + if (entry.target === spacerBefore) { dotNetHelper.invokeMethodAsync('OnSpacerBeforeVisible', entry.intersectionRect.top - entry.boundingClientRect.top, containerSize); - } else if (entry.target === spacerBelow) { + } else if (entry.target === spacerAfter) { dotNetHelper.invokeMethodAsync('OnSpacerAfterVisible', entry.boundingClientRect.bottom - entry.intersectionRect.bottom, containerSize); } else { throw new Error('Unknown intersection target'); @@ -67,8 +74,9 @@ function dispose(dotNetHelper: any): void { const observers = observersByDotNetId[dotNetHelper._id]; if (observers) { - observers.intersection.disconnect(); - observers.mutation.disconnect(); + observers.intersectionObserver.disconnect(); + observers.mutationObserverBefore.disconnect(); + observers.mutationObserverAfter.disconnect(); dotNetHelper.dispose(); diff --git a/src/Components/Web/src/Virtualization/VirtualizeDeferred.cs b/src/Components/Web/src/Virtualization/VirtualizeDeferred.cs index edf723c9b237..e63b149a9b59 100644 --- a/src/Components/Web/src/Virtualization/VirtualizeDeferred.cs +++ b/src/Components/Web/src/Virtualization/VirtualizeDeferred.cs @@ -95,7 +95,7 @@ protected override void RenderItems(RenderTreeBuilder builder) for (; itemsRendered < ItemsVisible; itemsRendered++) { - Placeholder(ItemsBefore + ItemsVisible + itemsRendered)(builder); + Placeholder(ItemsBefore + itemsRendered)(builder); } var itemsToFetch = ItemsBefore + VisibleItemCapacity - _loadedItems.Count; diff --git a/src/Components/test/testassets/BasicTestApp/VirtualizationComponent.razor b/src/Components/test/testassets/BasicTestApp/VirtualizationComponent.razor index 5c3cbbfca25e..ee741cbc9e51 100644 --- a/src/Components/test/testassets/BasicTestApp/VirtualizationComponent.razor +++ b/src/Components/test/testassets/BasicTestApp/VirtualizationComponent.razor @@ -57,7 +57,7 @@
Item @context
 -
Loading...
+
Loading item @context...
From 03d97a4dd222be4d8e700f8106b93999f7da724e Mon Sep 17 00:00:00 2001 From: Mackinnon Buck Date: Mon, 27 Jul 2020 18:23:55 -0700 Subject: [PATCH 09/21] Added CancellationToken parameter to ItemsProviderDelegate. --- AspNetCore.sln | 85 +------------------ .../Web/src/Virtualization/InfiniteScroll.cs | 18 ++-- .../Virtualization/ItemsProviderDelegate.cs | 7 +- .../Web/src/Virtualization/VirtualizeBase.cs | 2 +- .../src/Virtualization/VirtualizeDeferred.cs | 32 +++++-- .../test/E2ETest/Tests/VirtualizationTest.cs | 12 +++ .../VirtualizationComponent.razor | 29 +++---- 7 files changed, 70 insertions(+), 115 deletions(-) diff --git a/AspNetCore.sln b/AspNetCore.sln index 96dd9b28880f..bd7fc769c8b8 100644 --- a/AspNetCore.sln +++ b/AspNetCore.sln @@ -1437,11 +1437,11 @@ Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Components.TestServer", "sr EndProject Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "Sdk", "Sdk", "{FED4267E-E5E4-49C5-98DB-8B3F203596EE}" EndProject -Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Microsoft.NET.Sdk.BlazorWebAssembly", "src\Components\WebAssembly\Sdk\src\Microsoft.NET.Sdk.BlazorWebAssembly.csproj", "{6B2734BF-C61D-4889-ABBF-456A4075D59B}" +Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Microsoft.NET.Sdk.BlazorWebAssembly", "src\Components\WebAssembly\Sdk\src\Microsoft.NET.Sdk.BlazorWebAssembly.csproj", "{6B2734BF-C61D-4889-ABBF-456A4075D59B}" EndProject -Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Microsoft.NET.Sdk.BlazorWebAssembly.Tests", "src\Components\WebAssembly\Sdk\test\Microsoft.NET.Sdk.BlazorWebAssembly.Tests.csproj", "{83371889-9A3E-4D16-AE77-EB4F83BC6374}" +Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Microsoft.NET.Sdk.BlazorWebAssembly.Tests", "src\Components\WebAssembly\Sdk\test\Microsoft.NET.Sdk.BlazorWebAssembly.Tests.csproj", "{83371889-9A3E-4D16-AE77-EB4F83BC6374}" EndProject -Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Microsoft.NET.Sdk.BlazorWebAssembly.IntegrationTests", "src\Components\WebAssembly\Sdk\integrationtests\Microsoft.NET.Sdk.BlazorWebAssembly.IntegrationTests.csproj", "{525EBCB4-A870-470B-BC90-845306C337D1}" +Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Microsoft.NET.Sdk.BlazorWebAssembly.IntegrationTests", "src\Components\WebAssembly\Sdk\integrationtests\Microsoft.NET.Sdk.BlazorWebAssembly.IntegrationTests.csproj", "{525EBCB4-A870-470B-BC90-845306C337D1}" EndProject Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Microsoft.NET.Sdk.BlazorWebAssembly.Tools", "src\Components\WebAssembly\Sdk\tools\Microsoft.NET.Sdk.BlazorWebAssembly.Tools.csproj", "{175E5CD8-92D4-46BB-882E-3A930D3302D4}" EndProject @@ -6843,78 +6843,6 @@ Global {175E5CD8-92D4-46BB-882E-3A930D3302D4}.Release|x64.Build.0 = Release|Any CPU {175E5CD8-92D4-46BB-882E-3A930D3302D4}.Release|x86.ActiveCfg = Release|Any CPU {175E5CD8-92D4-46BB-882E-3A930D3302D4}.Release|x86.Build.0 = Release|Any CPU - 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public Func> ItemsProvider { get; set; } = default!; + public ItemsProviderDelegate ItemsProvider { get; set; } = default!; + + /// + /// Gets or sets the item count requested to the . + /// + [Parameter] + public int RequestedItemCount { get; set; } = 50; /// /// Gets the size of each item in pixels. @@ -67,14 +74,11 @@ protected override void BuildRenderTree(RenderTreeBuilder builder) builder.CloseComponent(); } - private async Task> FetchItems(int start, int count) + private async Task> FetchItems(int start, int count, CancellationToken cancellationToken) { - var items = new List(); + var result = await ItemsProvider(start, RequestedItemCount, cancellationToken); - await foreach (var item in ItemsProvider(start)) - { - items.Add(item); - } + var items = new List(result.Items); _itemCount += items.Count; diff --git a/src/Components/Web/src/Virtualization/ItemsProviderDelegate.cs b/src/Components/Web/src/Virtualization/ItemsProviderDelegate.cs index 01f6f31543ec..a5caa345bcde 100644 --- a/src/Components/Web/src/Virtualization/ItemsProviderDelegate.cs +++ b/src/Components/Web/src/Virtualization/ItemsProviderDelegate.cs @@ -1,6 +1,7 @@ // Copyright (c) .NET Foundation. All rights reserved. // Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information. +using System.Threading; using System.Threading.Tasks; namespace Microsoft.AspNetCore.Components.Virtualization @@ -14,6 +15,10 @@ namespace Microsoft.AspNetCore.Components.Virtualization /// The requested number of items to be provided. The actual number of provided items does not need to match /// this value. /// + /// The used to relay cancellation of the operation. /// A whose result is a upon successful completion. - public delegate Task> ItemsProviderDelegate(int startIndex, int requestedCount); + public delegate Task> ItemsProviderDelegate( + int startIndex, + int requestedCount, + CancellationToken cancellationToken); } diff --git a/src/Components/Web/src/Virtualization/VirtualizeBase.cs b/src/Components/Web/src/Virtualization/VirtualizeBase.cs index 86b21664e89d..e66c7fc61cfc 100644 --- a/src/Components/Web/src/Virtualization/VirtualizeBase.cs +++ b/src/Components/Web/src/Virtualization/VirtualizeBase.cs @@ -129,7 +129,7 @@ private string GetSpacerStyle(int itemsInSpacer) => $"height: {itemsInSpacer * ItemSize}px;"; /// - public async ValueTask DisposeAsync() + public virtual async ValueTask DisposeAsync() { await _jsInterop.DisposeAsync(); } diff --git a/src/Components/Web/src/Virtualization/VirtualizeDeferred.cs b/src/Components/Web/src/Virtualization/VirtualizeDeferred.cs index 809d7188f0c6..93e29d529780 100644 --- a/src/Components/Web/src/Virtualization/VirtualizeDeferred.cs +++ b/src/Components/Web/src/Virtualization/VirtualizeDeferred.cs @@ -17,14 +17,23 @@ namespace Microsoft.AspNetCore.Components.Virtualization /// The context type for the items being rendered. public sealed class VirtualizeDeferred : VirtualizeBase { + private enum FetchState + { + Idle, + Waiting, + Busy + } + private readonly ConcurrentQueue _loadedItems = new ConcurrentQueue(); - private int _fetchState; + private FetchState _fetchState; private int _itemCount; private Task>? _fetchTask; + private CancellationTokenSource? _fetchTcs; + /// /// Gets or sets the item template for the list. /// @@ -70,10 +79,12 @@ protected override async Task OnAfterRenderAsync(bool firstRender) { await base.OnAfterRenderAsync(firstRender); - if (Interlocked.CompareExchange(ref _fetchState, 2, 1) == 1) + if (_fetchState == FetchState.Waiting) { Debug.Assert(_fetchTask != null); + _fetchState = FetchState.Busy; + var result = await _fetchTask; _itemCount = result.TotalItemCount; @@ -83,7 +94,8 @@ protected override async Task OnAfterRenderAsync(bool firstRender) _loadedItems.Enqueue(item); } - _fetchState = 0; + _fetchTcs = null; + _fetchState = FetchState.Idle; StateHasChanged(); } @@ -107,10 +119,20 @@ protected override void RenderItems(RenderTreeBuilder builder) var itemsToFetch = ItemsBefore + VisibleItemCapacity - _loadedItems.Count; - if (itemsToFetch > 0 && Interlocked.CompareExchange(ref _fetchState, 1, 0) == 0) + if (itemsToFetch > 0 && _fetchState == FetchState.Idle) { - _fetchTask = ItemsProvider(_loadedItems.Count, itemsToFetch); + _fetchState = FetchState.Waiting; + _fetchTcs = new CancellationTokenSource(); + _fetchTask = ItemsProvider(_loadedItems.Count, itemsToFetch, _fetchTcs.Token); } } + + /// + public override ValueTask DisposeAsync() + { + _fetchTcs?.Cancel(); + + return base.DisposeAsync(); + } } } diff --git a/src/Components/test/E2ETest/Tests/VirtualizationTest.cs b/src/Components/test/E2ETest/Tests/VirtualizationTest.cs index b82fee8fe110..135a960dbdcd 100644 --- a/src/Components/test/E2ETest/Tests/VirtualizationTest.cs +++ b/src/Components/test/E2ETest/Tests/VirtualizationTest.cs @@ -1,9 +1,13 @@ +// Copyright (c) .NET Foundation. All rights reserved. +// Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information. + using BasicTestApp; using Microsoft.AspNetCore.Components.E2ETest; using Microsoft.AspNetCore.Components.E2ETest.Infrastructure; using Microsoft.AspNetCore.Components.E2ETest.Infrastructure.ServerFixtures; using Microsoft.AspNetCore.E2ETesting; using OpenQA.Selenium; +using OpenQA.Selenium.Support.Extensions; using Xunit; using Xunit.Abstractions; @@ -28,8 +32,16 @@ protected override void InitializeAsyncCore() [Fact] public void VirtualizeFixed_CanRenderStacked() { + var container = Browser.FindElement(By.Id("stacked-container")); + Browser.True(() => Browser.FindElements(By.Id("stacked-top-item")).Count > 0); Browser.True(() => Browser.FindElements(By.Id("stacked-bottom-item")).Count == 0); + + Browser.ExecuteJavaScript("const container = document.getElementById('stacked-container');container.scrollTop = container.scrollHeight;"); + + Browser.True(() => Browser.FindElements(By.Id("stacked-bottom-item")).Count > 0); } + + // TODO: Complete E2E tests. } } diff --git a/src/Components/test/testassets/BasicTestApp/VirtualizationComponent.razor b/src/Components/test/testassets/BasicTestApp/VirtualizationComponent.razor index f4046dbc05b8..aad7b828c567 100644 --- a/src/Components/test/testassets/BasicTestApp/VirtualizationComponent.razor +++ b/src/Components/test/testassets/BasicTestApp/VirtualizationComponent.razor @@ -1,4 +1,5 @@ @using Microsoft.AspNetCore.Components.Virtualization +@using System.Threading

Item size:
@@ -7,7 +8,7 @@

Stacked lists (fixed):
-

+
Item @context
 @@ -20,7 +21,7 @@

Infinite scrolling (large batch size):

- +
Item @context
 @@ -36,7 +37,7 @@

Infinite scrolling (small batch size):

- +
Item @context
 @@ -76,32 +77,22 @@ int itemCountLimit = 200; - async IAsyncEnumerable GetItemsAsync(int startIndex) + async Task> GetItemsAsync(int startIndex, int count, CancellationToken cancellationToken) { - await Task.Delay(500); - - for (int i = 0; i < 50; i++) - { - yield return startIndex + i; - } + await Task.Delay(count * 10, cancellationToken); if (startIndex >= 300) { throw new InvalidOperationException("Request timed out."); } - } - async Task> GetLimitedItemsAsync(int startIndex, int count) - { - await Task.Delay(500); - - return new ItemsProviderResult(Enumerable.Range(startIndex, count), itemCountLimit); + return new ItemsProviderResult(Enumerable.Range(startIndex, count), startIndex + count); } - async IAsyncEnumerable GetSingleItem(int index) + async Task> GetLimitedItemsAsync(int startIndex, int count, CancellationToken cancellationToken) { - await Task.Delay(5); + await Task.Delay(500, cancellationToken); - yield return index; + return new ItemsProviderResult(Enumerable.Range(startIndex, count), itemCountLimit); } } From 6c2b79d5c400afe9b39bb20477b23e0c0b38ee5e Mon Sep 17 00:00:00 2001 From: Mackinnon Buck Date: Tue, 28 Jul 2020 18:14:13 -0700 Subject: [PATCH 10/21] Combined VirtualizeDeferred and VirtualizeFixed, addressed CR feedback --- .../Virtualization/IVirtualizeJsCallbacks.cs | 4 +- .../Web/src/Virtualization/InfiniteScroll.cs | 25 +- .../Virtualization/ItemsProviderDelegate.cs | 13 +- .../Virtualization/ItemsProviderRequest.cs | 44 +++ .../src/Virtualization/ItemsProviderResult.cs | 8 +- .../Web/src/Virtualization/Virtualize.cs | 264 ++++++++++++++++++ .../Web/src/Virtualization/VirtualizeBase.cs | 137 --------- .../src/Virtualization/VirtualizeDeferred.cs | 138 --------- .../Web/src/Virtualization/VirtualizeFixed.cs | 53 ---- .../src/Hosting/WebAssemblyHostBuilder.cs | 1 - .../VirtualizationComponent.razor | 39 +-- 11 files changed, 345 insertions(+), 381 deletions(-) create mode 100644 src/Components/Web/src/Virtualization/ItemsProviderRequest.cs create mode 100644 src/Components/Web/src/Virtualization/Virtualize.cs delete mode 100644 src/Components/Web/src/Virtualization/VirtualizeBase.cs delete mode 100644 src/Components/Web/src/Virtualization/VirtualizeDeferred.cs delete mode 100644 src/Components/Web/src/Virtualization/VirtualizeFixed.cs diff --git a/src/Components/Web/src/Virtualization/IVirtualizeJsCallbacks.cs b/src/Components/Web/src/Virtualization/IVirtualizeJsCallbacks.cs index a75acc7364c0..394405ae3315 100644 --- a/src/Components/Web/src/Virtualization/IVirtualizeJsCallbacks.cs +++ b/src/Components/Web/src/Virtualization/IVirtualizeJsCallbacks.cs @@ -5,7 +5,7 @@ namespace Microsoft.AspNetCore.Components.Virtualization { internal interface IVirtualizeJsCallbacks { - internal void OnBeforeSpacerVisible(float spacerSize, float containerSize); - internal void OnBottomSpacerVisible(float spacerSize, float containerSize); + void OnBeforeSpacerVisible(float spacerSize, float containerSize); + void OnBottomSpacerVisible(float spacerSize, float containerSize); } } diff --git a/src/Components/Web/src/Virtualization/InfiniteScroll.cs b/src/Components/Web/src/Virtualization/InfiniteScroll.cs index feace0e6a85f..f8cdf659a012 100644 --- a/src/Components/Web/src/Virtualization/InfiniteScroll.cs +++ b/src/Components/Web/src/Virtualization/InfiniteScroll.cs @@ -2,8 +2,6 @@ // Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information. using System; -using System.Collections.Generic; -using System.Threading; using System.Threading.Tasks; using Microsoft.AspNetCore.Components.Rendering; @@ -37,7 +35,7 @@ public sealed class InfiniteScroll : ComponentBase /// Gets or sets the item count requested to the . ///
[Parameter] - public int RequestedItemCount { get; set; } = 50; + public int RequestedItemCount { get; set; } = 10; /// /// Gets the size of each item in pixels. @@ -55,18 +53,12 @@ protected override void OnParametersSet() throw new InvalidOperationException( $"{GetType()} requires template parameter '{nameof(Item)}' to be specified and non-null."); } - - if (Footer == null) - { - throw new InvalidOperationException( - $"{GetType()} requires template parameter '{nameof(Footer)}' to be specified and non-null."); - } } /// protected override void BuildRenderTree(RenderTreeBuilder builder) { - builder.OpenComponent>(0); + builder.OpenComponent>(0); builder.AddAttribute(1, "Item", Item); builder.AddAttribute(2, "Placeholder", Footer); builder.AddAttribute(3, "ItemsProvider", (ItemsProviderDelegate)FetchItems); @@ -74,15 +66,16 @@ protected override void BuildRenderTree(RenderTreeBuilder builder) builder.CloseComponent(); } - private async Task> FetchItems(int start, int count, CancellationToken cancellationToken) + private async Task> FetchItems(ItemsProviderRequest request) { - var result = await ItemsProvider(start, RequestedItemCount, cancellationToken); - - var items = new List(result.Items); + var result = await ItemsProvider(new ItemsProviderRequest( + request.StartIndex, + RequestedItemCount, + request.CancellationToken)); - _itemCount += items.Count; + _itemCount += result.Items.Count; - return new ItemsProviderResult(items, _itemCount + 1); + return new ItemsProviderResult(result.Items, _itemCount + 1); } } } diff --git a/src/Components/Web/src/Virtualization/ItemsProviderDelegate.cs b/src/Components/Web/src/Virtualization/ItemsProviderDelegate.cs index a5caa345bcde..34b56915a34f 100644 --- a/src/Components/Web/src/Virtualization/ItemsProviderDelegate.cs +++ b/src/Components/Web/src/Virtualization/ItemsProviderDelegate.cs @@ -1,7 +1,6 @@ // Copyright (c) .NET Foundation. All rights reserved. // Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information. -using System.Threading; using System.Threading.Tasks; namespace Microsoft.AspNetCore.Components.Virtualization @@ -10,15 +9,7 @@ namespace Microsoft.AspNetCore.Components.Virtualization /// A function that provides items to a virtualized source. /// /// The type of the context for each item in the list. - /// The start index of the data segment requested. - /// - /// The requested number of items to be provided. The actual number of provided items does not need to match - /// this value. - /// - /// The used to relay cancellation of the operation. + /// The defining the request details. /// A whose result is a upon successful completion. - public delegate Task> ItemsProviderDelegate( - int startIndex, - int requestedCount, - CancellationToken cancellationToken); + public delegate Task> ItemsProviderDelegate(ItemsProviderRequest request); } diff --git a/src/Components/Web/src/Virtualization/ItemsProviderRequest.cs b/src/Components/Web/src/Virtualization/ItemsProviderRequest.cs new file mode 100644 index 000000000000..f4dfe0cb78ff --- /dev/null +++ b/src/Components/Web/src/Virtualization/ItemsProviderRequest.cs @@ -0,0 +1,44 @@ +// Copyright (c) .NET Foundation. All rights reserved. +// Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information. + +using System.Threading; + +namespace Microsoft.AspNetCore.Components.Virtualization +{ + /// + /// Represents a request to an . + /// + public readonly struct ItemsProviderRequest + { + /// + /// The start index of the data segment requested. + /// + public int StartIndex { get; } + + /// + /// The requested number of items to be provided. The actual number of provided items does not need to match + /// this value. + /// + public int Count { get; } + + /// + /// The used to relay cancellation of the request. + /// + public CancellationToken CancellationToken { get; } + + /// + /// Constructs a new instance. + /// + /// The start index of the data segment requested. + /// The requested number of items to be provided. + /// + /// The used to relay cancellation of the request. + /// + public ItemsProviderRequest(int startIndex, int requestedCount, CancellationToken cancellationToken) + { + StartIndex = startIndex; + Count = requestedCount; + CancellationToken = cancellationToken; + } + } +} diff --git a/src/Components/Web/src/Virtualization/ItemsProviderResult.cs b/src/Components/Web/src/Virtualization/ItemsProviderResult.cs index ed8909b98fca..448e218c9598 100644 --- a/src/Components/Web/src/Virtualization/ItemsProviderResult.cs +++ b/src/Components/Web/src/Virtualization/ItemsProviderResult.cs @@ -12,9 +12,9 @@ namespace Microsoft.AspNetCore.Components.Virtualization public readonly struct ItemsProviderResult { /// - /// The list of requested item contexts. + /// The items to provide. /// - public IEnumerable Items { get; } + public IReadOnlyCollection Items { get; } /// /// The total item count in the source generating the items provided. @@ -24,9 +24,9 @@ public readonly struct ItemsProviderResult /// /// Instantiates a new instance. /// - /// The list of requested item contexts. + /// The items to provide. /// The total item count in the source generating the items provided. - public ItemsProviderResult(IEnumerable items, int totalItemCount) + public ItemsProviderResult(IReadOnlyCollection items, int totalItemCount) { Items = items; TotalItemCount = totalItemCount; diff --git a/src/Components/Web/src/Virtualization/Virtualize.cs b/src/Components/Web/src/Virtualization/Virtualize.cs new file mode 100644 index 000000000000..88e77bf1be53 --- /dev/null +++ b/src/Components/Web/src/Virtualization/Virtualize.cs @@ -0,0 +1,264 @@ +// Copyright (c) .NET Foundation. All rights reserved. +// Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information. + +using System; +using System.Collections.Generic; +using System.Linq; +using System.Threading; +using System.Threading.Tasks; +using Microsoft.AspNetCore.Components.Rendering; +using Microsoft.JSInterop; + +namespace Microsoft.AspNetCore.Components.Virtualization +{ + /// + /// Provides functionality for rendering a virtualized list of items. + /// + /// The context type for the items being rendered. + public sealed class Virtualize : ComponentBase, IVirtualizeJsCallbacks, IAsyncDisposable + { + private readonly List _loadedItems = new List(); + + private VirtualizeJsInterop? _jsInterop; + + private ElementReference _spacerBefore; + + private ElementReference _spacerAfter; + + private int _itemsBefore; + + private int _visibleItemCapacity; + + private int _itemsVisible; + + private int _itemCount; + + private Task _fetchTask = Task.CompletedTask; + + private CancellationTokenSource? _fetchCts; + + private ItemsProviderDelegate _itemsProvider = default!; + + private RenderFragment? _itemTemplate; + + private RenderFragment? _placeholder; + + [Inject] + private IJSRuntime JSRuntime { get; set; } = default!; + + /// + /// Gets or sets the item template for the list. + /// + [Parameter] + public RenderFragment? ChildContent { get; set; } + + /// + /// Gets or sets the item template for the list. + /// + [Parameter] + public RenderFragment? Item { get; set; } + + /// + /// Gets or sets the template for items that have not yet been loaded in memory. + /// + [Parameter] + public RenderFragment? Placeholder { get; set; } + + /// + /// Gets the size of each item in pixels. + /// + [Parameter] + public float ItemSize { get; set; } + + /// + /// Gets or sets the function providing items to the list. + /// + [Parameter] + public ItemsProviderDelegate ItemsProvider { get; set; } = default!; + + /// + /// Gets or sets the fixed item source. + /// + [Parameter] + public ICollection Items { get; set; } = default!; + + /// + protected override void OnParametersSet() + { + if (ItemSize <= 0) + { + throw new InvalidOperationException( + $"{GetType()} requires a positive value for parameter '{nameof(ItemSize)}' to perform virtualization."); + } + + if (ItemsProvider != null) + { + if (Items != null) + { + throw new InvalidOperationException($"{GetType()} can only accept one item source from its parameters."); + } + + _itemsProvider = ItemsProvider; + } + else if (Items != null) + { + _itemsProvider = DefaultItemsProvider; + } + else + { + throw new InvalidOperationException( + $"{GetType()} requires either the '{nameof(Items)}' or '{nameof(ItemsProvider)}' parameters to be specified " + + $"and non-null."); + } + + _itemTemplate = Item ?? ChildContent; + _placeholder = Placeholder ?? DefaultPlaceholder; + } + + /// + protected override async Task OnAfterRenderAsync(bool firstRender) + { + if (firstRender) + { + _jsInterop = new VirtualizeJsInterop(this, JSRuntime); + await _jsInterop.InitAsync(_spacerBefore, _spacerAfter); + } + + if (_fetchTask != null && !_fetchTask.IsCompletedSuccessfully) + { + try + { + await _fetchTask; + + StateHasChanged(); + } + catch (OperationCanceledException) + { + // No-op. + } + } + } + + /// + protected override void BuildRenderTree(RenderTreeBuilder builder) + { + var itemsAfter = Math.Max(0, _itemCount - _itemsVisible - _itemsBefore); + + builder.OpenElement(0, "div"); + builder.AddAttribute(1, "style", GetSpacerStyle(_itemsBefore)); + builder.AddElementReferenceCapture(2, elementReference => _spacerBefore = elementReference); + builder.CloseElement(); + + builder.OpenRegion(3); + + var itemsRendered = 0; + + // Render as many items as will visibly fit. + foreach (var item in _loadedItems.Skip(_itemsBefore).Take(_itemsVisible)) + { + builder.AddContent(0, _itemTemplate, item); + itemsRendered++; + } + + // Render placholder items to fill the remaining space. + for (; itemsRendered < _itemsVisible; itemsRendered++) + { + builder.AddContent(0, _placeholder, _itemsBefore + itemsRendered); + } + + builder.CloseRegion(); + + builder.OpenElement(4, "div"); + builder.AddAttribute(5, "style", GetSpacerStyle(itemsAfter)); + builder.AddElementReferenceCapture(6, elementReference => _spacerAfter = elementReference); + + builder.CloseElement(); + } + + private string GetSpacerStyle(int itemsInSpacer) + => $"height: {itemsInSpacer * ItemSize}px;"; + + void IVirtualizeJsCallbacks.OnBeforeSpacerVisible(float spacerSize, float containerSize) + { + _itemsBefore = CalcualteItemDistribution(spacerSize, containerSize); + + StateHasChanged(); + } + + void IVirtualizeJsCallbacks.OnBottomSpacerVisible(float spacerSize, float containerSize) + { + var itemsAfter = CalcualteItemDistribution(spacerSize, containerSize); + + _itemsBefore = Math.Max(0, _itemCount - itemsAfter - _itemsVisible); + + if (_itemsBefore + _visibleItemCapacity > _loadedItems.Count) + { + _fetchTask = FetchItems(); + } + + StateHasChanged(); + } + + private int CalcualteItemDistribution(float spacerSize, float containerSize) + { + _visibleItemCapacity = (int)Math.Ceiling(containerSize / ItemSize) + 2; + _itemsVisible = Math.Clamp(_itemCount, 0, _visibleItemCapacity); + + return Math.Max(0, (int)Math.Floor(spacerSize / ItemSize) - 1); + } + + private async Task FetchItems() + { + // Cancel the previous fetch, if it exists. + _fetchCts?.Cancel(); + + // Wait for the task to complete. If it fails due to an exception, the exception will bubble-up + // through `OnAfterRenderAsync`. + if (!_fetchTask.IsCanceled) + { + await _fetchTask; + } + + var placeholderItems = _itemsBefore + _visibleItemCapacity - _loadedItems.Count; + + // There's a chance that no more items need to be fetched after the previous task completes. + if (placeholderItems <= 0) + { + return; + } + + _fetchCts = new CancellationTokenSource(); + + var result = await _itemsProvider(new ItemsProviderRequest(_loadedItems.Count, placeholderItems, _fetchCts.Token)); + + _itemCount = result.TotalItemCount; + _loadedItems.AddRange(result.Items); + } + + private Task> DefaultItemsProvider(ItemsProviderRequest request) + { + return Task.FromResult(new ItemsProviderResult( + Items.Skip(request.StartIndex).Take(request.Count).ToList(), + Items.Count)); + } + + private RenderFragment DefaultPlaceholder(int index) => (builder) => + { + builder.OpenElement(0, "div"); + builder.AddAttribute(1, "style", $"height: {ItemSize}px !important;"); + builder.SetKey(GetHashCode() ^ index); + builder.CloseElement(); + }; + + /// + public async ValueTask DisposeAsync() + { + _fetchCts?.Cancel(); + + if (_jsInterop != null) + { + await _jsInterop.DisposeAsync(); + } + } + } +} diff --git a/src/Components/Web/src/Virtualization/VirtualizeBase.cs b/src/Components/Web/src/Virtualization/VirtualizeBase.cs deleted file mode 100644 index e66c7fc61cfc..000000000000 --- a/src/Components/Web/src/Virtualization/VirtualizeBase.cs +++ /dev/null @@ -1,137 +0,0 @@ -// Copyright (c) .NET Foundation. All rights reserved. -// Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information. - -using System; -using System.Threading.Tasks; -using Microsoft.AspNetCore.Components.Rendering; -using Microsoft.JSInterop; - -namespace Microsoft.AspNetCore.Components.Virtualization -{ - /// - /// Provides common functionality for virtualized lists. - /// - /// The context type for the items being rendered. - public abstract class VirtualizeBase : ComponentBase, IVirtualizeJsCallbacks, IAsyncDisposable - { - private VirtualizeJsInterop _jsInterop = default!; - - private ElementReference _spacerBefore; - - private ElementReference _spacerAfter; - - [Inject] - private IJSRuntime JSRuntime { get; set; } = default!; - - /// - /// Gets the number of items rendered before the visible part of the container. - /// - protected int ItemsBefore { get; private set; } - - /// - /// Gets the number of items the container can visibly fit. - /// - protected int VisibleItemCapacity { get; private set; } - - /// - /// Gets the number of items currently visible within the container. - /// - protected int ItemsVisible { get; private set; } - - /// - /// Gets the total number of items. - /// - protected abstract int ItemCount { get; } - - /// - /// Gets the size of each item in pixels. - /// - [Parameter] - public float ItemSize { get; set; } - - /// - /// Renders the visible items in the list. - /// - /// A to receive the render output. - protected abstract void RenderItems(RenderTreeBuilder builder); - - /// - public override async Task SetParametersAsync(ParameterView parameters) - { - await base.SetParametersAsync(parameters); - - _jsInterop ??= new VirtualizeJsInterop(this, JSRuntime); - - if (ItemSize <= 0) - { - throw new InvalidOperationException( - $"{GetType()} requires a positive value for parameter '{nameof(ItemSize)}' to perform virtualization."); - } - } - - /// - protected override async Task OnAfterRenderAsync(bool firstRender) - { - if (firstRender) - { - await _jsInterop.InitAsync(_spacerBefore, _spacerAfter); - } - } - - /// - protected override void BuildRenderTree(RenderTreeBuilder builder) - { - var itemsAfter = Math.Max(0, ItemCount - ItemsVisible - ItemsBefore); - - builder.OpenElement(0, "div"); - builder.AddAttribute(1, "style", GetSpacerStyle(ItemsBefore)); - builder.AddElementReferenceCapture(2, elementReference => _spacerBefore = elementReference); - builder.CloseElement(); - - builder.OpenRegion(3); - - RenderItems(builder); - - builder.CloseRegion(); - - builder.OpenElement(4, "div"); - builder.AddAttribute(5, "style", GetSpacerStyle(itemsAfter)); - builder.AddElementReferenceCapture(6, elementReference => _spacerAfter = elementReference); - - builder.CloseElement(); - } - - void IVirtualizeJsCallbacks.OnBeforeSpacerVisible(float spacerSize, float containerSize) - { - ItemsBefore = CalcualteItemDistribution(spacerSize, containerSize); - - StateHasChanged(); - } - - void IVirtualizeJsCallbacks.OnBottomSpacerVisible(float spacerSize, float containerSize) - { - var itemsAfter = CalcualteItemDistribution(spacerSize, containerSize); - - ItemsBefore = Math.Max(0, ItemCount - itemsAfter - ItemsVisible); - - StateHasChanged(); - } - - private int CalcualteItemDistribution(float spacerSize, float containerSize) - { - VisibleItemCapacity = (int)Math.Ceiling(containerSize / ItemSize) + 2; - ItemsVisible = Math.Clamp(ItemCount, 0, VisibleItemCapacity); - - return Math.Max(0, (int)Math.Floor(spacerSize / ItemSize) - 1); - } - - private string GetSpacerStyle(int itemsInSpacer) - => $"height: {itemsInSpacer * ItemSize}px;"; - - /// - public virtual async ValueTask DisposeAsync() - { - await _jsInterop.DisposeAsync(); - } - } -} diff --git a/src/Components/Web/src/Virtualization/VirtualizeDeferred.cs b/src/Components/Web/src/Virtualization/VirtualizeDeferred.cs deleted file mode 100644 index 93e29d529780..000000000000 --- a/src/Components/Web/src/Virtualization/VirtualizeDeferred.cs +++ /dev/null @@ -1,138 +0,0 @@ -// Copyright (c) .NET Foundation. All rights reserved. -// Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information. - -using System; -using System.Collections.Concurrent; -using System.Diagnostics; -using System.Linq; -using System.Threading; -using System.Threading.Tasks; -using Microsoft.AspNetCore.Components.Rendering; - -namespace Microsoft.AspNetCore.Components.Virtualization -{ - /// - /// Provides functionality for rendering a virtualized list from a deferred source. - /// - /// The context type for the items being rendered. - public sealed class VirtualizeDeferred : VirtualizeBase - { - private enum FetchState - { - Idle, - Waiting, - Busy - } - - private readonly ConcurrentQueue _loadedItems = new ConcurrentQueue(); - - private FetchState _fetchState; - - private int _itemCount; - - private Task>? _fetchTask; - - private CancellationTokenSource? _fetchTcs; - - /// - /// Gets or sets the item template for the list. - /// - [Parameter] - public RenderFragment Item { get; set; } = default!; - - /// - /// Gets or sets the template for items that have not yet been loaded in memory. - /// - [Parameter] - public RenderFragment Placeholder { get; set; } = default!; - - /// - /// Gets or sets the function providing items to the list. - /// - [Parameter] - public ItemsProviderDelegate ItemsProvider { get; set; } = default!; - - /// - protected override int ItemCount => _itemCount; - - /// - protected override void OnParametersSet() - { - if (Item == null) - { - throw new InvalidOperationException($"{GetType()} requires the template parameter '{nameof(Item)}' to be specified."); - } - - if (Placeholder == null) - { - throw new InvalidOperationException($"{GetType()} requires the template parameter '{nameof(Placeholder)}' to be specified."); - } - - if (ItemsProvider == null) - { - throw new InvalidOperationException($"{GetType()} requires a non-null parameter '{nameof(ItemsProvider)}'."); - } - } - - /// - protected override async Task OnAfterRenderAsync(bool firstRender) - { - await base.OnAfterRenderAsync(firstRender); - - if (_fetchState == FetchState.Waiting) - { - Debug.Assert(_fetchTask != null); - - _fetchState = FetchState.Busy; - - var result = await _fetchTask; - - _itemCount = result.TotalItemCount; - - foreach (var item in result.Items) - { - _loadedItems.Enqueue(item); - } - - _fetchTcs = null; - _fetchState = FetchState.Idle; - - StateHasChanged(); - } - } - - /// - protected override void RenderItems(RenderTreeBuilder builder) - { - var itemsRendered = 0; - - foreach (var item in _loadedItems.Skip(ItemsBefore).Take(ItemsVisible)) - { - Item(item)(builder); - itemsRendered++; - } - - for (; itemsRendered < ItemsVisible; itemsRendered++) - { - Placeholder(ItemsBefore + itemsRendered)(builder); - } - - var itemsToFetch = ItemsBefore + VisibleItemCapacity - _loadedItems.Count; - - if (itemsToFetch > 0 && _fetchState == FetchState.Idle) - { - _fetchState = FetchState.Waiting; - _fetchTcs = new CancellationTokenSource(); - _fetchTask = ItemsProvider(_loadedItems.Count, itemsToFetch, _fetchTcs.Token); - } - } - - /// - public override ValueTask DisposeAsync() - { - _fetchTcs?.Cancel(); - - return base.DisposeAsync(); - } - } -} diff --git a/src/Components/Web/src/Virtualization/VirtualizeFixed.cs b/src/Components/Web/src/Virtualization/VirtualizeFixed.cs deleted file mode 100644 index aa23062d3677..000000000000 --- a/src/Components/Web/src/Virtualization/VirtualizeFixed.cs +++ /dev/null @@ -1,53 +0,0 @@ -// Copyright (c) .NET Foundation. All rights reserved. -// Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information. - -using System; -using System.Collections.Generic; -using System.Linq; -using Microsoft.AspNetCore.Components.Rendering; - -namespace Microsoft.AspNetCore.Components.Virtualization -{ - /// - /// Provides functionality for rendering a virtualized fixed list of items. - /// - /// The context type for the items being rendered. - public sealed class VirtualizeFixed : VirtualizeBase - { - /// - /// Gets or sets the item template for the list. - /// - [Parameter] - public RenderFragment? ChildContent { get; set; } - - /// - /// Gets or sets the fixed item source. - /// - [Parameter] - public ICollection Items { get; set; } = default!; - - /// - protected override int ItemCount => Items.Count; - - /// - protected override void OnParametersSet() - { - if (Items == null) - { - throw new InvalidOperationException($"{GetType()} requires a non-null parameter '{nameof(Items)}'."); - } - } - - /// - protected override void RenderItems(RenderTreeBuilder builder) - { - if (ChildContent != null) - { - foreach (var item in Items.Skip(ItemsBefore).Take(ItemsVisible)) - { - ChildContent(item)(builder); - } - } - } - } -} diff --git a/src/Components/WebAssembly/WebAssembly/src/Hosting/WebAssemblyHostBuilder.cs b/src/Components/WebAssembly/WebAssembly/src/Hosting/WebAssemblyHostBuilder.cs index 21f589c9dd47..a65e4117cd1c 100644 --- a/src/Components/WebAssembly/WebAssembly/src/Hosting/WebAssemblyHostBuilder.cs +++ b/src/Components/WebAssembly/WebAssembly/src/Hosting/WebAssemblyHostBuilder.cs @@ -12,7 +12,6 @@ using Microsoft.Extensions.DependencyInjection; using Microsoft.Extensions.Logging; using Microsoft.JSInterop; -using Microsoft.AspNetCore.Components.Virtualization; namespace Microsoft.AspNetCore.Components.WebAssembly.Hosting { diff --git a/src/Components/test/testassets/BasicTestApp/VirtualizationComponent.razor b/src/Components/test/testassets/BasicTestApp/VirtualizationComponent.razor index aad7b828c567..a4dd0247600a 100644 --- a/src/Components/test/testassets/BasicTestApp/VirtualizationComponent.razor +++ b/src/Components/test/testassets/BasicTestApp/VirtualizationComponent.razor @@ -1,5 +1,4 @@ @using Microsoft.AspNetCore.Components.Virtualization -@using System.Threading

Item size:
@@ -9,12 +8,12 @@

Stacked lists (fixed):

- +
Item @context
- - + +
Item @context
- +

@@ -26,7 +25,7 @@
Item @context
-
+
Loading...
@@ -42,7 +41,7 @@
Item @context
-
+
Loading...
@@ -53,22 +52,22 @@

Deferred:

- +
Item @context
 -
Loading item @context...
+
Loading item @context...
 - +

Viewport as root (fixed):
- +

Item @context
- +

@code { @@ -77,22 +76,24 @@ int itemCountLimit = 200; - async Task> GetItemsAsync(int startIndex, int count, CancellationToken cancellationToken) + async Task> GetItemsAsync(ItemsProviderRequest request) { - await Task.Delay(count * 10, cancellationToken); + await Task.Delay(request.Count * 10, request.CancellationToken); - if (startIndex >= 300) + if (request.StartIndex >= 300) { throw new InvalidOperationException("Request timed out."); } - return new ItemsProviderResult(Enumerable.Range(startIndex, count), startIndex + count); + return new ItemsProviderResult( + Enumerable.Range(request.StartIndex, request.Count).ToList(), + request.StartIndex + request.Count); } - async Task> GetLimitedItemsAsync(int startIndex, int count, CancellationToken cancellationToken) + async Task> GetLimitedItemsAsync(ItemsProviderRequest request) { - await Task.Delay(500, cancellationToken); + await Task.Delay(500, request.CancellationToken); - return new ItemsProviderResult(Enumerable.Range(startIndex, count), itemCountLimit); + return new ItemsProviderResult(Enumerable.Range(request.StartIndex, request.Count).ToList(), itemCountLimit); } } From 8d0a884f45634ea7d502794c22d4654eb3e5daa6 Mon Sep 17 00:00:00 2001 From: Mackinnon Buck Date: Wed, 29 Jul 2020 18:18:43 -0700 Subject: [PATCH 11/21] Updated Virtualize to not cache items. --- .../Virtualization/IVirtualizeJsCallbacks.cs | 4 +- .../Web/src/Virtualization/InfiniteScroll.cs | 81 --------- .../Virtualization/ItemsProviderDelegate.cs | 4 +- .../Virtualization/ItemsProviderRequest.cs | 2 +- .../src/Virtualization/ItemsProviderResult.cs | 6 +- .../Web/src/Virtualization/Virtualize.cs | 163 +++++++++++------- .../src/Virtualization/VirtualizeJsInterop.cs | 4 +- .../VirtualizationComponent.razor | 69 +++----- 8 files changed, 135 insertions(+), 198 deletions(-) delete mode 100644 src/Components/Web/src/Virtualization/InfiniteScroll.cs diff --git a/src/Components/Web/src/Virtualization/IVirtualizeJsCallbacks.cs b/src/Components/Web/src/Virtualization/IVirtualizeJsCallbacks.cs index 394405ae3315..02328675623f 100644 --- a/src/Components/Web/src/Virtualization/IVirtualizeJsCallbacks.cs +++ b/src/Components/Web/src/Virtualization/IVirtualizeJsCallbacks.cs @@ -1,11 +1,11 @@ // Copyright (c) .NET Foundation. All rights reserved. // Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information. -namespace Microsoft.AspNetCore.Components.Virtualization +namespace Microsoft.AspNetCore.Components.Web { internal interface IVirtualizeJsCallbacks { void OnBeforeSpacerVisible(float spacerSize, float containerSize); - void OnBottomSpacerVisible(float spacerSize, float containerSize); + void OnAfterSpacerVisible(float spacerSize, float containerSize); } } diff --git a/src/Components/Web/src/Virtualization/InfiniteScroll.cs b/src/Components/Web/src/Virtualization/InfiniteScroll.cs deleted file mode 100644 index f8cdf659a012..000000000000 --- a/src/Components/Web/src/Virtualization/InfiniteScroll.cs +++ /dev/null @@ -1,81 +0,0 @@ -// Copyright (c) .NET Foundation. All rights reserved. -// Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information. - -using System; -using System.Threading.Tasks; -using Microsoft.AspNetCore.Components.Rendering; - -namespace Microsoft.AspNetCore.Components.Virtualization -{ - /// - /// Provides functionality for rendering a virtualized list from a source of unknown size. - /// - /// - public sealed class InfiniteScroll : ComponentBase - { - /// - /// Gets or sets the item template for the list. - /// - [Parameter] - public RenderFragment Item { get; set; } = default!; - - /// - /// Gets or sets the template for the footer of the list. - /// - [Parameter] - public RenderFragment Footer { get; set; } = default!; - - /// - /// Gets or sets the function retrieving items given a start index. - /// - [Parameter] - public ItemsProviderDelegate ItemsProvider { get; set; } = default!; - - /// - /// Gets or sets the item count requested to the . - /// - [Parameter] - public int RequestedItemCount { get; set; } = 10; - - /// - /// Gets the size of each item in pixels. - /// - [Parameter] - public float ItemSize { get; set; } - - private int _itemCount; - - /// - protected override void OnParametersSet() - { - if (Item == null) - { - throw new InvalidOperationException( - $"{GetType()} requires template parameter '{nameof(Item)}' to be specified and non-null."); - } - } - - /// - protected override void BuildRenderTree(RenderTreeBuilder builder) - { - builder.OpenComponent>(0); - builder.AddAttribute(1, "Item", Item); - builder.AddAttribute(2, "Placeholder", Footer); - builder.AddAttribute(3, "ItemsProvider", (ItemsProviderDelegate)FetchItems); - builder.AddAttribute(4, "ItemSize", ItemSize); - builder.CloseComponent(); - } - - private async Task> FetchItems(ItemsProviderRequest request) - { - var result = await ItemsProvider(new ItemsProviderRequest( - request.StartIndex, - RequestedItemCount, - request.CancellationToken)); - - _itemCount += result.Items.Count; - - return new ItemsProviderResult(result.Items, _itemCount + 1); - } - } -} diff --git a/src/Components/Web/src/Virtualization/ItemsProviderDelegate.cs b/src/Components/Web/src/Virtualization/ItemsProviderDelegate.cs index 34b56915a34f..3bfd531c6834 100644 --- a/src/Components/Web/src/Virtualization/ItemsProviderDelegate.cs +++ b/src/Components/Web/src/Virtualization/ItemsProviderDelegate.cs @@ -3,7 +3,7 @@ using System.Threading.Tasks; -namespace Microsoft.AspNetCore.Components.Virtualization +namespace Microsoft.AspNetCore.Components.Web { /// /// A function that provides items to a virtualized source. @@ -11,5 +11,5 @@ namespace Microsoft.AspNetCore.Components.Virtualization /// The type of the context for each item in the list. /// The defining the request details. /// A whose result is a upon successful completion. - public delegate Task> ItemsProviderDelegate(ItemsProviderRequest request); + public delegate ValueTask> ItemsProviderDelegate(ItemsProviderRequest request); } diff --git a/src/Components/Web/src/Virtualization/ItemsProviderRequest.cs b/src/Components/Web/src/Virtualization/ItemsProviderRequest.cs index f4dfe0cb78ff..f9904b383631 100644 --- a/src/Components/Web/src/Virtualization/ItemsProviderRequest.cs +++ b/src/Components/Web/src/Virtualization/ItemsProviderRequest.cs @@ -3,7 +3,7 @@ using System.Threading; -namespace Microsoft.AspNetCore.Components.Virtualization +namespace Microsoft.AspNetCore.Components.Web { /// /// Represents a request to an . diff --git a/src/Components/Web/src/Virtualization/ItemsProviderResult.cs b/src/Components/Web/src/Virtualization/ItemsProviderResult.cs index 448e218c9598..30862c153b69 100644 --- a/src/Components/Web/src/Virtualization/ItemsProviderResult.cs +++ b/src/Components/Web/src/Virtualization/ItemsProviderResult.cs @@ -3,7 +3,7 @@ using System.Collections.Generic; -namespace Microsoft.AspNetCore.Components.Virtualization +namespace Microsoft.AspNetCore.Components.Web { /// /// Represents the result of a . @@ -14,7 +14,7 @@ public readonly struct ItemsProviderResult /// /// The items to provide. /// - public IReadOnlyCollection Items { get; } + public IEnumerable Items { get; } /// /// The total item count in the source generating the items provided. @@ -26,7 +26,7 @@ public readonly struct ItemsProviderResult /// /// The items to provide. /// The total item count in the source generating the items provided. - public ItemsProviderResult(IReadOnlyCollection items, int totalItemCount) + public ItemsProviderResult(IEnumerable items, int totalItemCount) { Items = items; TotalItemCount = totalItemCount; diff --git a/src/Components/Web/src/Virtualization/Virtualize.cs b/src/Components/Web/src/Virtualization/Virtualize.cs index 88e77bf1be53..7222cd6ca445 100644 --- a/src/Components/Web/src/Virtualization/Virtualize.cs +++ b/src/Components/Web/src/Virtualization/Virtualize.cs @@ -9,7 +9,7 @@ using Microsoft.AspNetCore.Components.Rendering; using Microsoft.JSInterop; -namespace Microsoft.AspNetCore.Components.Virtualization +namespace Microsoft.AspNetCore.Components.Web { /// /// Provides functionality for rendering a virtualized list of items. @@ -17,8 +17,6 @@ namespace Microsoft.AspNetCore.Components.Virtualization /// The context type for the items being rendered. public sealed class Virtualize : ComponentBase, IVirtualizeJsCallbacks, IAsyncDisposable { - private readonly List _loadedItems = new List(); - private VirtualizeJsInterop? _jsInterop; private ElementReference _spacerBefore; @@ -29,13 +27,17 @@ public sealed class Virtualize : ComponentBase, IVirtualizeJsCallbacks, I private int _visibleItemCapacity; - private int _itemsVisible; - private int _itemCount; - private Task _fetchTask = Task.CompletedTask; + private int _loadedItemsStartIndex; + + private IEnumerable? _loadedItems; - private CancellationTokenSource? _fetchCts; + private Task _refreshTask = Task.CompletedTask; + + private CancellationTokenSource? _refreshCts; + + private Exception? _refreshException; private ItemsProviderDelegate _itemsProvider = default!; @@ -123,26 +125,15 @@ protected override async Task OnAfterRenderAsync(bool firstRender) _jsInterop = new VirtualizeJsInterop(this, JSRuntime); await _jsInterop.InitAsync(_spacerBefore, _spacerAfter); } - - if (_fetchTask != null && !_fetchTask.IsCompletedSuccessfully) - { - try - { - await _fetchTask; - - StateHasChanged(); - } - catch (OperationCanceledException) - { - // No-op. - } - } } /// protected override void BuildRenderTree(RenderTreeBuilder builder) { - var itemsAfter = Math.Max(0, _itemCount - _itemsVisible - _itemsBefore); + if (_refreshException != null) + { + throw _refreshException; + } builder.OpenElement(0, "div"); builder.AddAttribute(1, "style", GetSpacerStyle(_itemsBefore)); @@ -151,23 +142,40 @@ protected override void BuildRenderTree(RenderTreeBuilder builder) builder.OpenRegion(3); - var itemsRendered = 0; + var lastItemIndex = _itemsBefore + _visibleItemCapacity; + var renderIndex = _itemsBefore; + var placeholdersBeforeCount = Math.Min(_loadedItemsStartIndex, lastItemIndex); - // Render as many items as will visibly fit. - foreach (var item in _loadedItems.Skip(_itemsBefore).Take(_itemsVisible)) + // Render before spacers. + for (; renderIndex < placeholdersBeforeCount; renderIndex++) { - builder.AddContent(0, _itemTemplate, item); - itemsRendered++; + builder.AddContent(0, _placeholder, renderIndex); } - // Render placholder items to fill the remaining space. - for (; itemsRendered < _itemsVisible; itemsRendered++) + // Render loaded items. + if (_loadedItems != null) { - builder.AddContent(0, _placeholder, _itemsBefore + itemsRendered); + var itemsToShow = _loadedItems + .Skip(_itemsBefore - _loadedItemsStartIndex) + .Take(lastItemIndex - _loadedItemsStartIndex); + + foreach (var item in itemsToShow) + { + builder.AddContent(0, _itemTemplate, item); + renderIndex++; + } + } + + // Render after spacers. + for (; renderIndex < lastItemIndex; renderIndex++) + { + builder.AddContent(0, _placeholder, renderIndex); } builder.CloseRegion(); + var itemsAfter = Math.Max(0, _itemCount - _visibleItemCapacity - _itemsBefore); + builder.OpenElement(4, "div"); builder.AddAttribute(5, "style", GetSpacerStyle(itemsAfter)); builder.AddElementReferenceCapture(6, elementReference => _spacerAfter = elementReference); @@ -180,72 +188,97 @@ private string GetSpacerStyle(int itemsInSpacer) void IVirtualizeJsCallbacks.OnBeforeSpacerVisible(float spacerSize, float containerSize) { - _itemsBefore = CalcualteItemDistribution(spacerSize, containerSize); + CalcualteItemDistribution(spacerSize, containerSize, out var itemsBefore, out var visibleItemCapacity); - StateHasChanged(); + UpdateItemDistribution(itemsBefore, visibleItemCapacity); } - void IVirtualizeJsCallbacks.OnBottomSpacerVisible(float spacerSize, float containerSize) + void IVirtualizeJsCallbacks.OnAfterSpacerVisible(float spacerSize, float containerSize) { - var itemsAfter = CalcualteItemDistribution(spacerSize, containerSize); + CalcualteItemDistribution(spacerSize, containerSize, out var itemsAfter, out var visibleItemCapacity); - _itemsBefore = Math.Max(0, _itemCount - itemsAfter - _itemsVisible); + var itemsBefore = Math.Max(0, _itemCount - itemsAfter - visibleItemCapacity); - if (_itemsBefore + _visibleItemCapacity > _loadedItems.Count) - { - _fetchTask = FetchItems(); - } + UpdateItemDistribution(itemsBefore, visibleItemCapacity); + } - StateHasChanged(); + private void CalcualteItemDistribution(float spacerSize, float containerSize, out int itemsInSpacer, out int visibleItemCapacity) + { + itemsInSpacer = Math.Max(0, (int)Math.Floor(spacerSize / ItemSize) - 1); + visibleItemCapacity = (int)Math.Ceiling(containerSize / ItemSize) + 2; } - private int CalcualteItemDistribution(float spacerSize, float containerSize) + private void UpdateItemDistribution(int itemsBefore, int visibleItemCapacity) { - _visibleItemCapacity = (int)Math.Ceiling(containerSize / ItemSize) + 2; - _itemsVisible = Math.Clamp(_itemCount, 0, _visibleItemCapacity); + if (itemsBefore != _itemsBefore || visibleItemCapacity != _visibleItemCapacity) + { + _itemsBefore = itemsBefore; + _visibleItemCapacity = visibleItemCapacity; + _refreshTask = RefreshDataAsync(); - return Math.Max(0, (int)Math.Floor(spacerSize / ItemSize) - 1); + if (!_refreshTask.IsCompleted) + { + StateHasChanged(); + } + } } - private async Task FetchItems() + private async Task RefreshDataAsync() { - // Cancel the previous fetch, if it exists. - _fetchCts?.Cancel(); + _refreshCts?.Cancel(); - // Wait for the task to complete. If it fails due to an exception, the exception will bubble-up - // through `OnAfterRenderAsync`. - if (!_fetchTask.IsCanceled) + try + { + // Wait for the previous refresh to complete so it doesn't overwrite the current refresh. + await _refreshTask; + } + catch (OperationCanceledException) { - await _fetchTask; + // No-op. If a different type of exception is thrown, we want to terminate this task. } - var placeholderItems = _itemsBefore + _visibleItemCapacity - _loadedItems.Count; + try + { + _refreshCts = new CancellationTokenSource(); + + var request = new ItemsProviderRequest(_itemsBefore, _visibleItemCapacity, _refreshCts.Token); + var result = await _itemsProvider(request); - // There's a chance that no more items need to be fetched after the previous task completes. - if (placeholderItems <= 0) + _itemCount = result.TotalItemCount; + _loadedItems = result.Items; + _loadedItemsStartIndex = request.StartIndex; + + StateHasChanged(); + } + catch (OperationCanceledException) { - return; + // Bubble-up the cancellation. + throw; } + catch (Exception e) + { + // Cache this exception so the renderer can throw it. + _refreshException = e; - _fetchCts = new CancellationTokenSource(); - - var result = await _itemsProvider(new ItemsProviderRequest(_loadedItems.Count, placeholderItems, _fetchCts.Token)); + // Re-render the component to throw the exception. + StateHasChanged(); - _itemCount = result.TotalItemCount; - _loadedItems.AddRange(result.Items); + // Bubble-up the exception so tasks waiting on this one get terminated. + throw e; + } } - private Task> DefaultItemsProvider(ItemsProviderRequest request) + private ValueTask> DefaultItemsProvider(ItemsProviderRequest request) { - return Task.FromResult(new ItemsProviderResult( - Items.Skip(request.StartIndex).Take(request.Count).ToList(), + return ValueTask.FromResult(new ItemsProviderResult( + Items.Skip(request.StartIndex).Take(request.Count), Items.Count)); } private RenderFragment DefaultPlaceholder(int index) => (builder) => { builder.OpenElement(0, "div"); - builder.AddAttribute(1, "style", $"height: {ItemSize}px !important;"); + builder.AddAttribute(1, "style", $"height: {ItemSize}px;"); builder.SetKey(GetHashCode() ^ index); builder.CloseElement(); }; @@ -253,7 +286,7 @@ private RenderFragment DefaultPlaceholder(int index) => (builder) => /// public async ValueTask DisposeAsync() { - _fetchCts?.Cancel(); + _refreshCts?.Cancel(); if (_jsInterop != null) { diff --git a/src/Components/Web/src/Virtualization/VirtualizeJsInterop.cs b/src/Components/Web/src/Virtualization/VirtualizeJsInterop.cs index d12929390953..3345d92c5b04 100644 --- a/src/Components/Web/src/Virtualization/VirtualizeJsInterop.cs +++ b/src/Components/Web/src/Virtualization/VirtualizeJsInterop.cs @@ -5,7 +5,7 @@ using System.Threading.Tasks; using Microsoft.JSInterop; -namespace Microsoft.AspNetCore.Components.Virtualization +namespace Microsoft.AspNetCore.Components.Web { internal class VirtualizeJsInterop : IAsyncDisposable { @@ -38,7 +38,7 @@ public void OnSpacerBeforeVisible(float spacerSize, float containerSize) [JSInvokable] public void OnSpacerAfterVisible(float spacerSize, float containerSize) { - _owner.OnBottomSpacerVisible(spacerSize, containerSize); + _owner.OnAfterSpacerVisible(spacerSize, containerSize); } public async ValueTask DisposeAsync() diff --git a/src/Components/test/testassets/BasicTestApp/VirtualizationComponent.razor b/src/Components/test/testassets/BasicTestApp/VirtualizationComponent.razor index a4dd0247600a..9184d3c2e977 100644 --- a/src/Components/test/testassets/BasicTestApp/VirtualizationComponent.razor +++ b/src/Components/test/testassets/BasicTestApp/VirtualizationComponent.razor @@ -1,6 +1,4 @@ -@using Microsoft.AspNetCore.Components.Virtualization - -

+

Item size:

@@ -18,41 +16,23 @@

- Infinite scrolling (large batch size):
-

- - -
Item @context
- -
-
- Loading... -
-
- -
-

- -

- Infinite scrolling (small batch size):
+ Deferred:

- +
Item @context
 -
-
- Loading... -
-
- + +
Loading item @context...
+ +

- Deferred:
+ Deferred (cached):

- +
Item @context
 @@ -74,26 +54,31 @@ float itemSize = 100; ICollection fixedItems = Enumerable.Range(0, 1000).ToList(); + HashSet cachedItems = new HashSet(); + int itemCountLimit = 200; - async Task> GetItemsAsync(ItemsProviderRequest request) + async ValueTask> GetItemsAsync(ItemsProviderRequest request) { - await Task.Delay(request.Count * 10, request.CancellationToken); - - if (request.StartIndex >= 300) - { - throw new InvalidOperationException("Request timed out."); - } + await Task.Delay(500, request.CancellationToken); - return new ItemsProviderResult( - Enumerable.Range(request.StartIndex, request.Count).ToList(), - request.StartIndex + request.Count); + return new ItemsProviderResult(Enumerable.Range(request.StartIndex, request.Count), itemCountLimit); } - async Task> GetLimitedItemsAsync(ItemsProviderRequest request) + async ValueTask> GetItemsAsyncCached(ItemsProviderRequest request) { - await Task.Delay(500, request.CancellationToken); + var items = Enumerable.Range(request.StartIndex, request.Count); + + foreach (var item in items) + { + if (!cachedItems.Contains(item)) + { + await Task.Delay(50, request.CancellationToken); + + cachedItems.Add(item); + } + } - return new ItemsProviderResult(Enumerable.Range(request.StartIndex, request.Count).ToList(), itemCountLimit); + return new ItemsProviderResult(items, itemCountLimit); } } From 1aedbe05280d9ae1266ba91e9c838a383cf5ee63 Mon Sep 17 00:00:00 2001 From: Mackinnon Buck Date: Wed, 29 Jul 2020 18:20:33 -0700 Subject: [PATCH 12/21] Updated exception message. --- src/Components/Web/src/Virtualization/Virtualize.cs | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/src/Components/Web/src/Virtualization/Virtualize.cs b/src/Components/Web/src/Virtualization/Virtualize.cs index 7222cd6ca445..d6b831b992cb 100644 --- a/src/Components/Web/src/Virtualization/Virtualize.cs +++ b/src/Components/Web/src/Virtualization/Virtualize.cs @@ -97,7 +97,9 @@ protected override void OnParametersSet() { if (Items != null) { - throw new InvalidOperationException($"{GetType()} can only accept one item source from its parameters."); + throw new InvalidOperationException( + $"{GetType()} can only accept one item source from its parameters. " + + $"Do not supply both '{nameof(Items)}' and '{nameof(ItemsProvider)}'"); } _itemsProvider = ItemsProvider; From efec5472764c186dd797dcd26afeb779ec68081a Mon Sep 17 00:00:00 2001 From: Mackinnon Buck Date: Wed, 29 Jul 2020 18:25:42 -0700 Subject: [PATCH 13/21] Fixed inaccurate comments. --- src/Components/Web/src/Virtualization/Virtualize.cs | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/src/Components/Web/src/Virtualization/Virtualize.cs b/src/Components/Web/src/Virtualization/Virtualize.cs index d6b831b992cb..15b2c671963c 100644 --- a/src/Components/Web/src/Virtualization/Virtualize.cs +++ b/src/Components/Web/src/Virtualization/Virtualize.cs @@ -148,13 +148,13 @@ protected override void BuildRenderTree(RenderTreeBuilder builder) var renderIndex = _itemsBefore; var placeholdersBeforeCount = Math.Min(_loadedItemsStartIndex, lastItemIndex); - // Render before spacers. + // Render placeholders before the loaded items. for (; renderIndex < placeholdersBeforeCount; renderIndex++) { builder.AddContent(0, _placeholder, renderIndex); } - // Render loaded items. + // Render the loaded items. if (_loadedItems != null) { var itemsToShow = _loadedItems @@ -168,7 +168,7 @@ protected override void BuildRenderTree(RenderTreeBuilder builder) } } - // Render after spacers. + // Render the placeholders after the loaded items. for (; renderIndex < lastItemIndex; renderIndex++) { builder.AddContent(0, _placeholder, renderIndex); From 978562f48a29b6490d775ea20bb107db19986e3e Mon Sep 17 00:00:00 2001 From: Mackinnon Buck Date: Thu, 30 Jul 2020 11:21:35 -0700 Subject: [PATCH 14/21] CR feedback. --- .../Web.JS/dist/Release/blazor.server.js | 2 +- .../Web.JS/dist/Release/blazor.webassembly.js | 2 +- src/Components/Web.JS/src/Virtualize.ts | 11 ++-- .../src/Virtualization/PlaceholderContext.cs | 25 ++++++++ .../Web/src/Virtualization/Virtualize.cs | 61 ++++++++++--------- .../VirtualizationComponent.razor | 14 ++--- 6 files changed, 73 insertions(+), 42 deletions(-) create mode 100644 src/Components/Web/src/Virtualization/PlaceholderContext.cs diff --git a/src/Components/Web.JS/dist/Release/blazor.server.js b/src/Components/Web.JS/dist/Release/blazor.server.js index 0504b2d42583..fdcdf00e00df 100644 --- a/src/Components/Web.JS/dist/Release/blazor.server.js +++ b/src/Components/Web.JS/dist/Release/blazor.server.js @@ -5,7 +5,7 @@ * @author Feross Aboukhadijeh * @license MIT */ -var r=n(55),o=n(56),i=n(57);function a(){return c.TYPED_ARRAY_SUPPORT?2147483647:1073741823}function s(e,t){if(a()=a())throw new RangeError("Attempt to allocate Buffer larger than maximum size: 0x"+a().toString(16)+" bytes");return 0|e}function d(e,t){if(c.isBuffer(e))return e.length;if("undefined"!=typeof ArrayBuffer&&"function"==typeof ArrayBuffer.isView&&(ArrayBuffer.isView(e)||e instanceof ArrayBuffer))return e.byteLength;"string"!=typeof e&&(e=""+e);var n=e.length;if(0===n)return 0;for(var r=!1;;)switch(t){case"ascii":case"latin1":case"binary":return n;case"utf8":case"utf-8":case void 0:return F(e).length;case"ucs2":case"ucs-2":case"utf16le":case"utf-16le":return 2*n;case"hex":return n>>>1;case"base64":return H(e).length;default:if(r)return F(e).length;t=(""+t).toLowerCase(),r=!0}}function g(e,t,n){var r=!1;if((void 0===t||t<0)&&(t=0),t>this.length)return"";if((void 0===n||n>this.length)&&(n=this.length),n<=0)return"";if((n>>>=0)<=(t>>>=0))return"";for(e||(e="utf8");;)switch(e){case"hex":return x(this,t,n);case"utf8":case"utf-8":return k(this,t,n);case"ascii":return T(this,t,n);case"latin1":case"binary":return P(this,t,n);case"base64":return _(this,t,n);case"ucs2":case"ucs-2":case"utf16le":case"utf-16le":return O(this,t,n);default:if(r)throw new TypeError("Unknown encoding: "+e);e=(e+"").toLowerCase(),r=!0}}function y(e,t,n){var r=e[t];e[t]=e[n],e[n]=r}function v(e,t,n,r,o){if(0===e.length)return-1;if("string"==typeof n?(r=n,n=0):n>2147483647?n=2147483647:n<-2147483648&&(n=-2147483648),n=+n,isNaN(n)&&(n=o?0:e.length-1),n<0&&(n=e.length+n),n>=e.length){if(o)return-1;n=e.length-1}else if(n<0){if(!o)return-1;n=0}if("string"==typeof t&&(t=c.from(t,r)),c.isBuffer(t))return 0===t.length?-1:b(e,t,n,r,o);if("number"==typeof t)return t&=255,c.TYPED_ARRAY_SUPPORT&&"function"==typeof Uint8Array.prototype.indexOf?o?Uint8Array.prototype.indexOf.call(e,t,n):Uint8Array.prototype.lastIndexOf.call(e,t,n):b(e,[t],n,r,o);throw new TypeError("val must be string, number or Buffer")}function b(e,t,n,r,o){var i,a=1,s=e.length,c=t.length;if(void 0!==r&&("ucs2"===(r=String(r).toLowerCase())||"ucs-2"===r||"utf16le"===r||"utf-16le"===r)){if(e.length<2||t.length<2)return-1;a=2,s/=2,c/=2,n/=2}function u(e,t){return 1===a?e[t]:e.readUInt16BE(t*a)}if(o){var l=-1;for(i=n;is&&(n=s-c),i=n;i>=0;i--){for(var f=!0,h=0;ho&&(r=o):r=o;var i=t.length;if(i%2!=0)throw new TypeError("Invalid hex string");r>i/2&&(r=i/2);for(var a=0;a>8,o=n%256,i.push(o),i.push(r);return i}(t,e.length-n),e,n,r)}function _(e,t,n){return 0===t&&n===e.length?r.fromByteArray(e):r.fromByteArray(e.slice(t,n))}function k(e,t,n){n=Math.min(e.length,n);for(var r=[],o=t;o239?4:u>223?3:u>191?2:1;if(o+f<=n)switch(f){case 1:u<128&&(l=u);break;case 2:128==(192&(i=e[o+1]))&&(c=(31&u)<<6|63&i)>127&&(l=c);break;case 3:i=e[o+1],a=e[o+2],128==(192&i)&&128==(192&a)&&(c=(15&u)<<12|(63&i)<<6|63&a)>2047&&(c<55296||c>57343)&&(l=c);break;case 4:i=e[o+1],a=e[o+2],s=e[o+3],128==(192&i)&&128==(192&a)&&128==(192&s)&&(c=(15&u)<<18|(63&i)<<12|(63&a)<<6|63&s)>65535&&c<1114112&&(l=c)}null===l?(l=65533,f=1):l>65535&&(l-=65536,r.push(l>>>10&1023|55296),l=56320|1023&l),r.push(l),o+=f}return function(e){var t=e.length;if(t<=4096)return String.fromCharCode.apply(String,e);var n="",r=0;for(;r0&&(e=this.toString("hex",0,n).match(/.{2}/g).join(" "),this.length>n&&(e+=" ... 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7:i=a.ops.pop(),a.trys.pop();continue;default:if(!(o=a.trys,(o=o.length>0&&o[o.length-1])||6!==i[0]&&2!==i[0])){a=0;continue}if(3===i[0]&&(!o||i[1]>o[0]&&i[1]0&&o[o.length-1])||6!==i[0]&&2!==i[0])){a=0;continue}if(3===i[0]&&(!o||i[1]>o[0]&&i[1]0&&o[o.length-1])||6!==i[0]&&2!==i[0])){a=0;continue}if(3===i[0]&&(!o||i[1]>o[0]&&i[1] 0) { + // When we first start up, both the "before" and "after" spacers will be visible, but it's only relevant to raise a + // single event to load the initial data. To avoid raising two events, skip the one for the "after" spacer if we know + // it's meaningless to talk about any overlap into it. dotNetHelper.invokeMethodAsync('OnSpacerAfterVisible', entry.boundingClientRect.bottom - entry.intersectionRect.bottom, containerSize); - } else { - throw new Error('Unknown intersection target'); } }); } diff --git a/src/Components/Web/src/Virtualization/PlaceholderContext.cs b/src/Components/Web/src/Virtualization/PlaceholderContext.cs new file mode 100644 index 000000000000..42192008f47e --- /dev/null +++ b/src/Components/Web/src/Virtualization/PlaceholderContext.cs @@ -0,0 +1,25 @@ +// Copyright (c) .NET Foundation. All rights reserved. +// Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information. + +namespace Microsoft.AspNetCore.Components.Web +{ + /// + /// Contains context for a placeholder in a virtualized list. + /// + public readonly struct PlaceholderContext + { + /// + /// The item index of the placeholder. + /// + public int Index { get; } + + /// + /// Constructs a new instance. + /// + /// The item index of the placeholder. + public PlaceholderContext(int index) + { + Index = index; + } + } +} diff --git a/src/Components/Web/src/Virtualization/Virtualize.cs b/src/Components/Web/src/Virtualization/Virtualize.cs index 15b2c671963c..fa8f02e8dc5a 100644 --- a/src/Components/Web/src/Virtualization/Virtualize.cs +++ b/src/Components/Web/src/Virtualization/Virtualize.cs @@ -43,7 +43,7 @@ public sealed class Virtualize : ComponentBase, IVirtualizeJsCallbacks, I private RenderFragment? _itemTemplate; - private RenderFragment? _placeholder; + private RenderFragment? _placeholder; [Inject] private IJSRuntime JSRuntime { get; set; } = default!; @@ -64,7 +64,7 @@ public sealed class Virtualize : ComponentBase, IVirtualizeJsCallbacks, I /// Gets or sets the template for items that have not yet been loaded in memory. ///
[Parameter] - public RenderFragment? Placeholder { get; set; } + public RenderFragment? Placeholder { get; set; } /// /// Gets the size of each item in pixels. @@ -142,18 +142,23 @@ protected override void BuildRenderTree(RenderTreeBuilder builder) builder.AddElementReferenceCapture(2, elementReference => _spacerBefore = elementReference); builder.CloseElement(); - builder.OpenRegion(3); + // This is a rare case where it's valid for the sequence number to be programmatically incremented. + // This is only true because we know for certain that no other content will be alongside it. - var lastItemIndex = _itemsBefore + _visibleItemCapacity; + var lastItemIndex = Math.Min(_itemsBefore + _visibleItemCapacity, _itemCount); var renderIndex = _itemsBefore; var placeholdersBeforeCount = Math.Min(_loadedItemsStartIndex, lastItemIndex); + builder.OpenRegion(3); + // Render placeholders before the loaded items. for (; renderIndex < placeholdersBeforeCount; renderIndex++) { - builder.AddContent(0, _placeholder, renderIndex); + builder.AddContent(renderIndex, _placeholder, new PlaceholderContext(renderIndex)); } + builder.CloseRegion(); + // Render the loaded items. if (_loadedItems != null) { @@ -161,26 +166,32 @@ protected override void BuildRenderTree(RenderTreeBuilder builder) .Skip(_itemsBefore - _loadedItemsStartIndex) .Take(lastItemIndex - _loadedItemsStartIndex); + builder.OpenRegion(4); + foreach (var item in itemsToShow) { - builder.AddContent(0, _itemTemplate, item); + builder.AddContent(renderIndex, _itemTemplate, item); renderIndex++; } + + builder.CloseRegion(); } + builder.OpenRegion(5); + // Render the placeholders after the loaded items. for (; renderIndex < lastItemIndex; renderIndex++) { - builder.AddContent(0, _placeholder, renderIndex); + builder.AddContent(renderIndex, _placeholder, new PlaceholderContext(renderIndex)); } builder.CloseRegion(); var itemsAfter = Math.Max(0, _itemCount - _visibleItemCapacity - _itemsBefore); - builder.OpenElement(4, "div"); - builder.AddAttribute(5, "style", GetSpacerStyle(itemsAfter)); - builder.AddElementReferenceCapture(6, elementReference => _spacerAfter = elementReference); + builder.OpenElement(6, "div"); + builder.AddAttribute(7, "style", GetSpacerStyle(itemsAfter)); + builder.AddElementReferenceCapture(8, elementReference => _spacerAfter = elementReference); builder.CloseElement(); } @@ -228,29 +239,24 @@ private void UpdateItemDistribution(int itemsBefore, int visibleItemCapacity) private async Task RefreshDataAsync() { _refreshCts?.Cancel(); + _refreshCts = new CancellationTokenSource(); - try - { - // Wait for the previous refresh to complete so it doesn't overwrite the current refresh. - await _refreshTask; - } - catch (OperationCanceledException) - { - // No-op. If a different type of exception is thrown, we want to terminate this task. - } + var cancellationToken = _refreshCts.Token; + var request = new ItemsProviderRequest(_itemsBefore, _visibleItemCapacity, cancellationToken); try { - _refreshCts = new CancellationTokenSource(); - - var request = new ItemsProviderRequest(_itemsBefore, _visibleItemCapacity, _refreshCts.Token); var result = await _itemsProvider(request); - _itemCount = result.TotalItemCount; - _loadedItems = result.Items; - _loadedItemsStartIndex = request.StartIndex; + // Only apply result if the task was not canceled. + if (!cancellationToken.IsCancellationRequested) + { + _itemCount = result.TotalItemCount; + _loadedItems = result.Items; + _loadedItemsStartIndex = request.StartIndex; - StateHasChanged(); + StateHasChanged(); + } } catch (OperationCanceledException) { @@ -277,11 +283,10 @@ private ValueTask> DefaultItemsProvider(ItemsProvider Items.Count)); } - private RenderFragment DefaultPlaceholder(int index) => (builder) => + private RenderFragment DefaultPlaceholder(PlaceholderContext context) => (builder) => { builder.OpenElement(0, "div"); builder.AddAttribute(1, "style", $"height: {ItemSize}px;"); - builder.SetKey(GetHashCode() ^ index); builder.CloseElement(); }; diff --git a/src/Components/test/testassets/BasicTestApp/VirtualizationComponent.razor b/src/Components/test/testassets/BasicTestApp/VirtualizationComponent.razor index 9184d3c2e977..8ae16e57f4d4 100644 --- a/src/Components/test/testassets/BasicTestApp/VirtualizationComponent.razor +++ b/src/Components/test/testassets/BasicTestApp/VirtualizationComponent.razor @@ -7,10 +7,10 @@ Stacked lists (fixed):
-
Item @context
+
Item @context
 -
Item @context
+
Item @context

@@ -20,10 +20,10 @@
-
Item @context
+
Item @context
 -
Loading item @context...
+
Loading item @context.Index...
@@ -34,10 +34,10 @@
-
Item @context
+
Item @context
 -
Loading item @context...
+
Loading item @context.Index...
@@ -46,7 +46,7 @@

Viewport as root (fixed):
-

Item @context
+
Item @context

From 02a03f45399e36167dacefc4f07b1706b93e957d Mon Sep 17 00:00:00 2001 From: Mackinnon Buck Date: Thu, 30 Jul 2020 17:52:16 -0700 Subject: [PATCH 15/21] Added E2E tests. --- .../Web/src/Virtualization/Virtualize.cs | 52 +++--- .../src/Virtualization/VirtualizeJsInterop.cs | 2 +- .../Web/test/Virtualization/VirtualizeTest.cs | 10 + .../test/E2ETest/Tests/VirtualizationTest.cs | 174 +++++++++++++++++- .../VirtualizationComponent.razor | 74 ++++---- .../TestServer/PrerenderedStartup.cs | 2 +- 6 files changed, 237 insertions(+), 77 deletions(-) create mode 100644 src/Components/Web/test/Virtualization/VirtualizeTest.cs diff --git a/src/Components/Web/src/Virtualization/Virtualize.cs b/src/Components/Web/src/Virtualization/Virtualize.cs index fa8f02e8dc5a..6e9eca2afc83 100644 --- a/src/Components/Web/src/Virtualization/Virtualize.cs +++ b/src/Components/Web/src/Virtualization/Virtualize.cs @@ -33,8 +33,6 @@ public sealed class Virtualize : ComponentBase, IVirtualizeJsCallbacks, I private IEnumerable? _loadedItems; - private Task _refreshTask = Task.CompletedTask; - private CancellationTokenSource? _refreshCts; private Exception? _refreshException; @@ -76,13 +74,13 @@ public sealed class Virtualize : ComponentBase, IVirtualizeJsCallbacks, I /// Gets or sets the function providing items to the list. /// [Parameter] - public ItemsProviderDelegate ItemsProvider { get; set; } = default!; + public ItemsProviderDelegate? ItemsProvider { get; set; } /// /// Gets or sets the fixed item source. /// [Parameter] - public ICollection Items { get; set; } = default!; + public ICollection? Items { get; set; } /// protected override void OnParametersSet() @@ -99,7 +97,7 @@ protected override void OnParametersSet() { throw new InvalidOperationException( $"{GetType()} can only accept one item source from its parameters. " + - $"Do not supply both '{nameof(Items)}' and '{nameof(ItemsProvider)}'"); + $"Do not supply both '{nameof(Items)}' and '{nameof(ItemsProvider)}'."); } _itemsProvider = ItemsProvider; @@ -125,7 +123,7 @@ protected override async Task OnAfterRenderAsync(bool firstRender) if (firstRender) { _jsInterop = new VirtualizeJsInterop(this, JSRuntime); - await _jsInterop.InitAsync(_spacerBefore, _spacerAfter); + await _jsInterop.InitializeAsync(_spacerBefore, _spacerAfter); } } @@ -134,7 +132,10 @@ protected override void BuildRenderTree(RenderTreeBuilder builder) { if (_refreshException != null) { - throw _refreshException; + var oldRefreshException = _refreshException; + _refreshException = null; + + throw oldRefreshException; } builder.OpenElement(0, "div"); @@ -142,13 +143,13 @@ protected override void BuildRenderTree(RenderTreeBuilder builder) builder.AddElementReferenceCapture(2, elementReference => _spacerBefore = elementReference); builder.CloseElement(); - // This is a rare case where it's valid for the sequence number to be programmatically incremented. - // This is only true because we know for certain that no other content will be alongside it. - var lastItemIndex = Math.Min(_itemsBefore + _visibleItemCapacity, _itemCount); var renderIndex = _itemsBefore; var placeholdersBeforeCount = Math.Min(_loadedItemsStartIndex, lastItemIndex); + // This is a rare case where it's valid for the sequence number to be programmatically incremented. + // This is only true because we know for certain that no other content will be alongside it. + builder.OpenRegion(3); // Render placeholders before the loaded items. @@ -227,9 +228,9 @@ private void UpdateItemDistribution(int itemsBefore, int visibleItemCapacity) { _itemsBefore = itemsBefore; _visibleItemCapacity = visibleItemCapacity; - _refreshTask = RefreshDataAsync(); + var refreshTask = RefreshDataAsync(); - if (!_refreshTask.IsCompleted) + if (!refreshTask.IsCompleted) { StateHasChanged(); } @@ -258,29 +259,28 @@ private async Task RefreshDataAsync() StateHasChanged(); } } - catch (OperationCanceledException) - { - // Bubble-up the cancellation. - throw; - } catch (Exception e) { - // Cache this exception so the renderer can throw it. - _refreshException = e; - - // Re-render the component to throw the exception. - StateHasChanged(); + if (e is OperationCanceledException oce && oce.CancellationToken == cancellationToken) + { + // No-op; we canceled the operation, so it's fine to suppress this exception. + } + else + { + // Cache this exception so the renderer can throw it. + _refreshException = e; - // Bubble-up the exception so tasks waiting on this one get terminated. - throw e; + // Re-render the component to throw the exception. + StateHasChanged(); + } } } private ValueTask> DefaultItemsProvider(ItemsProviderRequest request) { return ValueTask.FromResult(new ItemsProviderResult( - Items.Skip(request.StartIndex).Take(request.Count), - Items.Count)); + Items!.Skip(request.StartIndex).Take(request.Count), + Items!.Count)); } private RenderFragment DefaultPlaceholder(PlaceholderContext context) => (builder) => diff --git a/src/Components/Web/src/Virtualization/VirtualizeJsInterop.cs b/src/Components/Web/src/Virtualization/VirtualizeJsInterop.cs index 3345d92c5b04..99f5e96a9d88 100644 --- a/src/Components/Web/src/Virtualization/VirtualizeJsInterop.cs +++ b/src/Components/Web/src/Virtualization/VirtualizeJsInterop.cs @@ -23,7 +23,7 @@ public VirtualizeJsInterop(IVirtualizeJsCallbacks owner, IJSRuntime jsRuntime) _jsRuntime = jsRuntime; } - public async ValueTask InitAsync(ElementReference spacerBefore, ElementReference spacerAfter) + public async ValueTask InitializeAsync(ElementReference spacerBefore, ElementReference spacerAfter) { _selfReference = DotNetObjectReference.Create(this); await _jsRuntime.InvokeVoidAsync($"{JsFunctionsPrefix}.init", _selfReference, spacerBefore, spacerAfter); diff --git a/src/Components/Web/test/Virtualization/VirtualizeTest.cs b/src/Components/Web/test/Virtualization/VirtualizeTest.cs new file mode 100644 index 000000000000..ab37c27b8746 --- /dev/null +++ b/src/Components/Web/test/Virtualization/VirtualizeTest.cs @@ -0,0 +1,10 @@ +// Copyright (c) .NET Foundation. All rights reserved. +// Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information. + +namespace Microsoft.AspNetCore.Components.Virtualization +{ + public class VirtualizeTest + { + // TODO: Functional tests. + } +} diff --git a/src/Components/test/E2ETest/Tests/VirtualizationTest.cs b/src/Components/test/E2ETest/Tests/VirtualizationTest.cs index 135a960dbdcd..de53f4ed1f4c 100644 --- a/src/Components/test/E2ETest/Tests/VirtualizationTest.cs +++ b/src/Components/test/E2ETest/Tests/VirtualizationTest.cs @@ -30,18 +30,178 @@ protected override void InitializeAsyncCore() } [Fact] - public void VirtualizeFixed_CanRenderStacked() + public void AlwaysFillsVisibleCapacity_Sync() { - var container = Browser.FindElement(By.Id("stacked-container")); + var topSpacer = Browser.FindElement(By.Id("sync-container")).FindElement(By.TagName("div")); + var expectedInitialSpacerStyle = "height: 0px;"; - Browser.True(() => Browser.FindElements(By.Id("stacked-top-item")).Count > 0); - Browser.True(() => Browser.FindElements(By.Id("stacked-bottom-item")).Count == 0); + int initialItemCount = 0; - Browser.ExecuteJavaScript("const container = document.getElementById('stacked-container');container.scrollTop = container.scrollHeight;"); + // Wait until items have been rendered. + Browser.True(() => (initialItemCount = GetItemCount()) > 0); + Browser.Equal(expectedInitialSpacerStyle, () => topSpacer.GetAttribute("style")); - Browser.True(() => Browser.FindElements(By.Id("stacked-bottom-item")).Count > 0); + // Scroll halfway. + Browser.ExecuteJavaScript("const container = document.getElementById('sync-container');container.scrollTop = container.scrollHeight * 0.5;"); + + // Validate that we get the same item count after scrolling halfway. + Browser.Equal(initialItemCount, GetItemCount); + Browser.NotEqual(expectedInitialSpacerStyle, () => topSpacer.GetAttribute("style")); + + // Scroll to the bottom. + Browser.ExecuteJavaScript("const container = document.getElementById('sync-container');container.scrollTop = container.scrollHeight;"); + + // Validate that we get the same item count after scrolling to the bottom. + Browser.Equal(initialItemCount, GetItemCount); + Browser.NotEqual(expectedInitialSpacerStyle, () => topSpacer.GetAttribute("style")); + + int GetItemCount() => Browser.FindElements(By.Id("sync-item")).Count; + } + + [Fact] + public void AlwaysFillsVisibleCapacity_Async() + { + var finishLoadingButton = Browser.FindElement(By.Id("finish-loading-button")); + + // Check that no items or placeholders are visible. + // No data fetches have happened so we don't know how many items there are. + Browser.Equal(0, GetItemCount); + Browser.Equal(0, GetPlaceholderCount); + + // Load the initial set of items. + finishLoadingButton.Click(); + + var initialItemCount = 0; + + // Validate that items appear and placeholders aren't rendered. + Browser.True(() => (initialItemCount = GetItemCount()) > 0); + Browser.Equal(0, GetPlaceholderCount); + + // Scroll halfway. + Browser.ExecuteJavaScript("const container = document.getElementById('async-container');container.scrollTop = container.scrollHeight * 0.5;"); + + // Validate that items are replaced by the same number of placeholders. + Browser.Equal(0, GetItemCount); + Browser.Equal(initialItemCount, GetPlaceholderCount); + + // Load the new set of items. + finishLoadingButton.Click(); + + // Validate that the placeholders are replaced by the same number of items. + Browser.Equal(initialItemCount, GetItemCount); + Browser.Equal(0, GetPlaceholderCount); + + // Scroll to the bottom. + Browser.ExecuteJavaScript("const container = document.getElementById('async-container');container.scrollTop = container.scrollHeight;"); + + // Validate that items are replaced by the same number of placeholders. + Browser.Equal(0, GetItemCount); + Browser.Equal(initialItemCount, GetPlaceholderCount); + + // Load the new set of items. + finishLoadingButton.Click(); + + // Validate that the placeholders are replaced by the same number of items. + Browser.Equal(initialItemCount, GetItemCount); + Browser.Equal(0, GetPlaceholderCount); + + int GetItemCount() => Browser.FindElements(By.Id("async-item")).Count; + int GetPlaceholderCount() => Browser.FindElements(By.Id("async-placeholder")).Count; + } + + [Fact] + public void RerendersWhenItemSizeShrinks_Sync() + { + int initialItemCount = 0; + + // Wait until items have been rendered. + Browser.True(() => (initialItemCount = GetItemCount()) > 0); + + var itemSizeInput = Browser.FindElement(By.Id("item-size-input")); + + // Change the item size. + itemSizeInput.SendKeys("\b\b\b50\n"); + + // Validate that the list has been re-rendered to show more items. + Browser.True(() => GetItemCount() > initialItemCount); + + int GetItemCount() => Browser.FindElements(By.Id("sync-item")).Count; } - // TODO: Complete E2E tests. + [Fact] + public void RerendersWhenItemSizeShrinks_Async() + { + var finishLoadingButton = Browser.FindElement(By.Id("finish-loading-button")); + + // Load the initial set of items. + finishLoadingButton.Click(); + + int initialItemCount = 0; + + // Validate that items appear and placeholders aren't rendered. + Browser.True(() => (initialItemCount = GetItemCount()) > 0); + Browser.Equal(0, GetPlaceholderCount); + + var itemSizeInput = Browser.FindElement(By.Id("item-size-input")); + + // Change the item size. + itemSizeInput.SendKeys("\b\b\b50\n"); + + // Validate that the same number of loaded items is rendered. + Browser.Equal(initialItemCount, GetItemCount); + Browser.True(() => GetPlaceholderCount() > 0); + + // Load the new set of items. + finishLoadingButton.Click(); + + // Validate that the placeholders have been replaced with more loaded items. + Browser.True(() => GetItemCount() > initialItemCount); + Browser.Equal(0, GetPlaceholderCount); + + int GetItemCount() => Browser.FindElements(By.Id("async-item")).Count; + int GetPlaceholderCount() => Browser.FindElements(By.Id("async-placeholder")).Count; + } + + [Fact] + public void CancelsOutdatedRefreshes_Async() + { + var cancellationCount = Browser.FindElement(By.Id("cancellation-count")); + var finishLoadingButton = Browser.FindElement(By.Id("finish-loading-button")); + + // Load the initial set of items. + finishLoadingButton.Click(); + + // Validate that there are no initial cancellations. + Browser.Equal("0", () => cancellationCount.Text); + + // Validate that there is no initial fetch to cancel. + Browser.ExecuteJavaScript("const container = document.getElementById('async-container');container.scrollTop = 1000;"); + Browser.Equal("0", () => cancellationCount.Text); + + // Validate that scrolling again cancels the first fetch. + Browser.ExecuteJavaScript("const container = document.getElementById('async-container');container.scrollTop = 2000;"); + Browser.Equal("1", () => cancellationCount.Text); + + // Validate that scrolling again cancels the second fetch. + Browser.ExecuteJavaScript("const container = document.getElementById('async-container');container.scrollTop = 3000;"); + Browser.Equal("2", () => cancellationCount.Text); + } + + [Fact] + public void CanUseViewportAsContainer() + { + var expectedInitialSpacerStyle = "height: 0px;"; + var topSpacer = Browser.FindElement(By.Id("viewport-as-root")).FindElement(By.TagName("div")); + + Browser.ExecuteJavaScript("const element = document.getElementById('viewport-as-root'); element.scrollIntoView();"); + + // Validate that the top spacer has a height of zero. + Browser.Equal(expectedInitialSpacerStyle, () => topSpacer.GetAttribute("style")); + + Browser.ExecuteJavaScript("window.scrollTo(0, document.body.scrollHeight);"); + + // Validate that the top spacer has expanded. + Browser.NotEqual(expectedInitialSpacerStyle, () => topSpacer.GetAttribute("style")); + } } } diff --git a/src/Components/test/testassets/BasicTestApp/VirtualizationComponent.razor b/src/Components/test/testassets/BasicTestApp/VirtualizationComponent.razor index 8ae16e57f4d4..315d6537cc57 100644 --- a/src/Components/test/testassets/BasicTestApp/VirtualizationComponent.razor +++ b/src/Components/test/testassets/BasicTestApp/VirtualizationComponent.razor @@ -1,50 +1,35 @@ 

Item size:
- +

- Stacked lists (fixed):
-

+ Synchronous:
+
-
Item @context
- - -
Item @context
+
Item @context

- Deferred:
-

+ Asynchronous:
+
+ Cancellation count: @asyncCancellationCount
+
-
Item @context
- - -
Loading item @context.Index...
- - -
-

- -

- Deferred (cached):
-

- - -
Item @context
+
Item @context
 -
Loading item @context.Index...
+
Loading item @context.Index...

-

- Viewport as root (fixed):
+

+ Viewport as root:

Item @context
@@ -54,31 +39,36 @@ float itemSize = 100; ICollection fixedItems = Enumerable.Range(0, 1000).ToList(); - HashSet cachedItems = new HashSet(); + int asyncTotalItemCount = 200; + int asyncCancellationCount = 0; + TaskCompletionSource asyncTcs = new TaskCompletionSource(); - int itemCountLimit = 200; + HashSet cachedItems = new HashSet(); async ValueTask> GetItemsAsync(ItemsProviderRequest request) { - await Task.Delay(500, request.CancellationToken); + var registration = request.CancellationToken.Register(() => CancelLoadingAsync(request.CancellationToken)); - return new ItemsProviderResult(Enumerable.Range(request.StartIndex, request.Count), itemCountLimit); + await asyncTcs.Task; + + registration.Dispose(); + + return new ItemsProviderResult(Enumerable.Range(request.StartIndex, request.Count), asyncTotalItemCount); } - async ValueTask> GetItemsAsyncCached(ItemsProviderRequest request) + void FinishLoadingAsync() { - var items = Enumerable.Range(request.StartIndex, request.Count); + asyncTcs.SetResult(); + asyncTcs = new TaskCompletionSource(); + } - foreach (var item in items) - { - if (!cachedItems.Contains(item)) - { - await Task.Delay(50, request.CancellationToken); + void CancelLoadingAsync(System.Threading.CancellationToken cancellationToken) + { + asyncTcs.TrySetCanceled(cancellationToken); + asyncTcs = new TaskCompletionSource(); - cachedItems.Add(item); - } - } + asyncCancellationCount++; - return new ItemsProviderResult(items, itemCountLimit); + StateHasChanged(); } } diff --git a/src/Components/test/testassets/TestServer/PrerenderedStartup.cs b/src/Components/test/testassets/TestServer/PrerenderedStartup.cs index 961333fb6e20..4a77e18ef8dc 100644 --- a/src/Components/test/testassets/TestServer/PrerenderedStartup.cs +++ b/src/Components/test/testassets/TestServer/PrerenderedStartup.cs @@ -23,7 +23,7 @@ public void ConfigureServices(IServiceCollection services) services.AddMvc(); services.AddServerSideBlazor(); services.AddAuthentication(CookieAuthenticationDefaults.AuthenticationScheme).AddCookie(); - services.AddSingleton(); + //services.AddSingleton(); } // This method gets called by the runtime. Use this method to configure the HTTP request pipeline. From 532c22cc6da844ba815af37d1532832c575c72be Mon Sep 17 00:00:00 2001 From: Mackinnon Buck Date: Fri, 31 Jul 2020 10:09:14 -0700 Subject: [PATCH 16/21] Started on unit tests. --- .../Web/test/Virtualization/VirtualizeTest.cs | 59 +++++++++++++++++++ 1 file changed, 59 insertions(+) diff --git a/src/Components/Web/test/Virtualization/VirtualizeTest.cs b/src/Components/Web/test/Virtualization/VirtualizeTest.cs index ab37c27b8746..d651389237f4 100644 --- a/src/Components/Web/test/Virtualization/VirtualizeTest.cs +++ b/src/Components/Web/test/Virtualization/VirtualizeTest.cs @@ -1,10 +1,69 @@ // Copyright (c) .NET Foundation. All rights reserved. // Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information. +using System; +using System.Collections.Generic; +using System.Threading.Tasks; +using Microsoft.AspNetCore.Components.Rendering; +using Microsoft.AspNetCore.Components.Test.Helpers; +using Microsoft.AspNetCore.Components.Web; +using Xunit; + namespace Microsoft.AspNetCore.Components.Virtualization { public class VirtualizeTest { // TODO: Functional tests. + [Fact] + public void Virtualize_ThrowsWhenGivenNonPositiveItemSize() + { + var rootComponent = new VirtualizeTestHostcomponent + { + InnerContent = BuildVirtualize( + i => builder => { }, + null, + context => builder => { }, + 0f, + null, + new List()) + }; + + var testRenderer = new TestRenderer(); + var componentId = testRenderer.AssignRootComponentId(rootComponent); + + var ex = Assert.Throws(() => testRenderer.RenderRootComponent(componentId)); + } + + public RenderFragment BuildVirtualize( + RenderFragment childContent, + RenderFragment item, + RenderFragment placeholder, + float itemSize, + ItemsProviderDelegate itemsProvider, + ICollection items) + => builder => + { + builder.OpenComponent>(0); + builder.AddAttribute(1, "ChildContent", childContent); + builder.AddAttribute(2, "Item", item); + builder.AddAttribute(3, "Placeholder", placeholder); + builder.AddAttribute(4, "ItemSize", itemSize); + builder.AddAttribute(5, "ItemsProvider", itemsProvider); + builder.AddAttribute(6, "Items", items); + builder.CloseComponent(); + }; + + private class VirtualizeTestHostcomponent : AutoRenderComponent + { + public RenderFragment InnerContent { get; set; } + + protected override void BuildRenderTree(RenderTreeBuilder builder) + { + builder.OpenElement(0, "div"); + builder.AddAttribute(1, "style", "overflow: auto; height: 800px;"); + builder.AddAttribute(2, "ChildContent", InnerContent); + builder.CloseElement(); + } + } } } From f2791a0909232414319b4e92e2493bfc4a30280b Mon Sep 17 00:00:00 2001 From: Mackinnon Buck Date: Fri, 31 Jul 2020 11:42:33 -0700 Subject: [PATCH 17/21] Added unit tests. --- .../Web/test/Virtualization/VirtualizeTest.cs | 123 ++++++++++++++---- .../TestServer/PrerenderedStartup.cs | 2 +- 2 files changed, 101 insertions(+), 24 deletions(-) diff --git a/src/Components/Web/test/Virtualization/VirtualizeTest.cs b/src/Components/Web/test/Virtualization/VirtualizeTest.cs index d651389237f4..1b78f03fc02b 100644 --- a/src/Components/Web/test/Virtualization/VirtualizeTest.cs +++ b/src/Components/Web/test/Virtualization/VirtualizeTest.cs @@ -3,53 +3,130 @@ using System; using System.Collections.Generic; +using System.Linq; using System.Threading.Tasks; using Microsoft.AspNetCore.Components.Rendering; using Microsoft.AspNetCore.Components.Test.Helpers; using Microsoft.AspNetCore.Components.Web; +using Microsoft.Extensions.DependencyInjection; +using Microsoft.JSInterop; +using Moq; using Xunit; namespace Microsoft.AspNetCore.Components.Virtualization { public class VirtualizeTest { - // TODO: Functional tests. [Fact] - public void Virtualize_ThrowsWhenGivenNonPositiveItemSize() + public async void Virtualize_ThrowsWhenGivenNonPositiveItemSize() { var rootComponent = new VirtualizeTestHostcomponent { - InnerContent = BuildVirtualize( - i => builder => { }, - null, - context => builder => { }, - 0f, - null, - new List()) + InnerContent = BuildVirtualize(0f, EmptyItemsProvider, null) }; - var testRenderer = new TestRenderer(); + var serviceProvider = new ServiceCollection() + .AddTransient((sp) => Mock.Of()) + .BuildServiceProvider(); + + var testRenderer = new TestRenderer(serviceProvider); + var componentId = testRenderer.AssignRootComponentId(rootComponent); + + var ex = await Assert.ThrowsAsync(async () => await testRenderer.RenderRootComponentAsync(componentId)); + Assert.Contains("requires a positive value for parameter", ex.Message); + } + + [Fact] + public async void Virtualize_ThrowsWhenGivenMultipleItemSources() + { + var rootComponent = new VirtualizeTestHostcomponent + { + InnerContent = BuildVirtualize(10f, EmptyItemsProvider, new List()) + }; + + var serviceProvider = new ServiceCollection() + .AddTransient((sp) => Mock.Of()) + .BuildServiceProvider(); + + var testRenderer = new TestRenderer(serviceProvider); + var componentId = testRenderer.AssignRootComponentId(rootComponent); + + var ex = await Assert.ThrowsAsync(async () => await testRenderer.RenderRootComponentAsync(componentId)); + Assert.Contains("can only accept one item source from its parameters", ex.Message); + } + + [Fact] + public async void Virtualize_ThrowsWhenGivenNoItemSources() + { + var rootComponent = new VirtualizeTestHostcomponent + { + InnerContent = BuildVirtualize(10f, null, null) + }; + + var serviceProvider = new ServiceCollection() + .AddTransient((sp) => Mock.Of()) + .BuildServiceProvider(); + + var testRenderer = new TestRenderer(serviceProvider); + var componentId = testRenderer.AssignRootComponentId(rootComponent); + + var ex = await Assert.ThrowsAsync(async () => await testRenderer.RenderRootComponentAsync(componentId)); + Assert.Contains("parameters to be specified and non-null", ex.Message); + } + + [Fact] + public async void Virtualize_DispatchesExceptionsFromItemsProviderThroughRenderer() + { + Virtualize renderedVirtualize = null; + + var rootComponent = new VirtualizeTestHostcomponent + { + InnerContent = BuildVirtualize(10f, AlwaysThrowsItemsProvider, null, virtualize => renderedVirtualize = virtualize) + }; + + var serviceProvider = new ServiceCollection() + .AddTransient((sp) => Mock.Of()) + .BuildServiceProvider(); + + var testRenderer = new TestRenderer(serviceProvider); var componentId = testRenderer.AssignRootComponentId(rootComponent); - var ex = Assert.Throws(() => testRenderer.RenderRootComponent(componentId)); + // Render to populate the component reference. + await testRenderer.RenderRootComponentAsync(componentId); + + Assert.NotNull(renderedVirtualize); + + // Simulate a JS spacer callback. + ((IVirtualizeJsCallbacks)renderedVirtualize).OnAfterSpacerVisible(10f, 100f); + + // Validate that the exception is dispatched through the renderer. + var ex = await Assert.ThrowsAsync(async () => await testRenderer.RenderRootComponentAsync(componentId)); + Assert.Equal("Thrown from items provider.", ex.Message); } - public RenderFragment BuildVirtualize( - RenderFragment childContent, - RenderFragment item, - RenderFragment placeholder, + private ValueTask> EmptyItemsProvider(ItemsProviderRequest request) + => ValueTask.FromResult(new ItemsProviderResult(Enumerable.Empty(), 0)); + + private ValueTask> AlwaysThrowsItemsProvider(ItemsProviderRequest request) + => throw new InvalidOperationException("Thrown from items provider."); + + private RenderFragment BuildVirtualize( float itemSize, ItemsProviderDelegate itemsProvider, - ICollection items) + ICollection items, + Action> captureRenderedVirtualize = null) => builder => { builder.OpenComponent>(0); - builder.AddAttribute(1, "ChildContent", childContent); - builder.AddAttribute(2, "Item", item); - builder.AddAttribute(3, "Placeholder", placeholder); - builder.AddAttribute(4, "ItemSize", itemSize); - builder.AddAttribute(5, "ItemsProvider", itemsProvider); - builder.AddAttribute(6, "Items", items); + builder.AddAttribute(1, "ItemSize", itemSize); + builder.AddAttribute(2, "ItemsProvider", itemsProvider); + builder.AddAttribute(3, "Items", items); + + if (captureRenderedVirtualize != null) + { + builder.AddComponentReferenceCapture(4, component => captureRenderedVirtualize(component as Virtualize)); + } + builder.CloseComponent(); }; @@ -61,7 +138,7 @@ protected override void BuildRenderTree(RenderTreeBuilder builder) { builder.OpenElement(0, "div"); builder.AddAttribute(1, "style", "overflow: auto; height: 800px;"); - builder.AddAttribute(2, "ChildContent", InnerContent); + builder.AddContent(2, InnerContent); builder.CloseElement(); } } diff --git a/src/Components/test/testassets/TestServer/PrerenderedStartup.cs b/src/Components/test/testassets/TestServer/PrerenderedStartup.cs index 4a77e18ef8dc..961333fb6e20 100644 --- a/src/Components/test/testassets/TestServer/PrerenderedStartup.cs +++ b/src/Components/test/testassets/TestServer/PrerenderedStartup.cs @@ -23,7 +23,7 @@ public void ConfigureServices(IServiceCollection services) services.AddMvc(); services.AddServerSideBlazor(); services.AddAuthentication(CookieAuthenticationDefaults.AuthenticationScheme).AddCookie(); - //services.AddSingleton(); + services.AddSingleton(); } // This method gets called by the runtime. Use this method to configure the HTTP request pipeline. From 3548a981abc6375bea4eb8928dd0dd484730d143 Mon Sep 17 00:00:00 2001 From: Mackinnon Buck Date: Fri, 31 Jul 2020 13:37:09 -0700 Subject: [PATCH 18/21] Fixed async tests. --- src/Components/Web/test/Virtualization/VirtualizeTest.cs | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/src/Components/Web/test/Virtualization/VirtualizeTest.cs b/src/Components/Web/test/Virtualization/VirtualizeTest.cs index 1b78f03fc02b..801ecd2d484f 100644 --- a/src/Components/Web/test/Virtualization/VirtualizeTest.cs +++ b/src/Components/Web/test/Virtualization/VirtualizeTest.cs @@ -18,7 +18,7 @@ namespace Microsoft.AspNetCore.Components.Virtualization public class VirtualizeTest { [Fact] - public async void Virtualize_ThrowsWhenGivenNonPositiveItemSize() + public async Task Virtualize_ThrowsWhenGivenNonPositiveItemSize() { var rootComponent = new VirtualizeTestHostcomponent { @@ -37,7 +37,7 @@ public async void Virtualize_ThrowsWhenGivenNonPositiveItemSize() } [Fact] - public async void Virtualize_ThrowsWhenGivenMultipleItemSources() + public async Task Virtualize_ThrowsWhenGivenMultipleItemSources() { var rootComponent = new VirtualizeTestHostcomponent { @@ -56,7 +56,7 @@ public async void Virtualize_ThrowsWhenGivenMultipleItemSources() } [Fact] - public async void Virtualize_ThrowsWhenGivenNoItemSources() + public async Task Virtualize_ThrowsWhenGivenNoItemSources() { var rootComponent = new VirtualizeTestHostcomponent { @@ -75,7 +75,7 @@ public async void Virtualize_ThrowsWhenGivenNoItemSources() } [Fact] - public async void Virtualize_DispatchesExceptionsFromItemsProviderThroughRenderer() + public async Task Virtualize_DispatchesExceptionsFromItemsProviderThroughRenderer() { Virtualize renderedVirtualize = null; From 98b6aa6f11e848966f3e06500c550f87e99fea4c Mon Sep 17 00:00:00 2001 From: Mackinnon Buck Date: Mon, 3 Aug 2020 11:58:19 -0700 Subject: [PATCH 19/21] Addressed API review feedback. --- .../Web/src/Virtualization/IVirtualizeJsCallbacks.cs | 2 +- .../Web/src/Virtualization/ItemsProviderDelegate.cs | 4 ++-- .../Web/src/Virtualization/ItemsProviderRequest.cs | 8 ++++---- .../Web/src/Virtualization/ItemsProviderResult.cs | 2 +- .../Web/src/Virtualization/PlaceholderContext.cs | 2 +- src/Components/Web/src/Virtualization/Virtualize.cs | 6 +++--- .../Web/src/Virtualization/VirtualizeJsInterop.cs | 2 +- src/Components/Web/test/Virtualization/VirtualizeTest.cs | 2 +- .../testassets/BasicTestApp/VirtualizationComponent.razor | 4 ++-- .../test/testassets/BasicTestApp/_Imports.razor | 1 + .../content/BlazorServerWeb-CSharp/_Imports.razor | 1 + .../ComponentsWebAssembly-CSharp/Client/_Imports.razor | 1 + 12 files changed, 19 insertions(+), 16 deletions(-) diff --git a/src/Components/Web/src/Virtualization/IVirtualizeJsCallbacks.cs b/src/Components/Web/src/Virtualization/IVirtualizeJsCallbacks.cs index 02328675623f..f7447b9b46d8 100644 --- a/src/Components/Web/src/Virtualization/IVirtualizeJsCallbacks.cs +++ b/src/Components/Web/src/Virtualization/IVirtualizeJsCallbacks.cs @@ -1,7 +1,7 @@ // Copyright (c) .NET Foundation. All rights reserved. // Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information. -namespace Microsoft.AspNetCore.Components.Web +namespace Microsoft.AspNetCore.Components.Web.Virtualization { internal interface IVirtualizeJsCallbacks { diff --git a/src/Components/Web/src/Virtualization/ItemsProviderDelegate.cs b/src/Components/Web/src/Virtualization/ItemsProviderDelegate.cs index 3bfd531c6834..52bd6bf5c9b3 100644 --- a/src/Components/Web/src/Virtualization/ItemsProviderDelegate.cs +++ b/src/Components/Web/src/Virtualization/ItemsProviderDelegate.cs @@ -3,13 +3,13 @@ using System.Threading.Tasks; -namespace Microsoft.AspNetCore.Components.Web +namespace Microsoft.AspNetCore.Components.Web.Virtualization { /// /// A function that provides items to a virtualized source. /// /// The type of the context for each item in the list. /// The defining the request details. - /// A whose result is a upon successful completion. + /// A whose result is a upon successful completion. public delegate ValueTask> ItemsProviderDelegate(ItemsProviderRequest request); } diff --git a/src/Components/Web/src/Virtualization/ItemsProviderRequest.cs b/src/Components/Web/src/Virtualization/ItemsProviderRequest.cs index f9904b383631..fb0e8f595fa0 100644 --- a/src/Components/Web/src/Virtualization/ItemsProviderRequest.cs +++ b/src/Components/Web/src/Virtualization/ItemsProviderRequest.cs @@ -3,7 +3,7 @@ using System.Threading; -namespace Microsoft.AspNetCore.Components.Web +namespace Microsoft.AspNetCore.Components.Web.Virtualization { /// /// Represents a request to an . @@ -30,14 +30,14 @@ public readonly struct ItemsProviderRequest /// Constructs a new instance. /// /// The start index of the data segment requested. - /// The requested number of items to be provided. + /// The requested number of items to be provided. /// /// The used to relay cancellation of the request. /// - public ItemsProviderRequest(int startIndex, int requestedCount, CancellationToken cancellationToken) + public ItemsProviderRequest(int startIndex, int count, CancellationToken cancellationToken) { StartIndex = startIndex; - Count = requestedCount; + Count = count; CancellationToken = cancellationToken; } } diff --git a/src/Components/Web/src/Virtualization/ItemsProviderResult.cs b/src/Components/Web/src/Virtualization/ItemsProviderResult.cs index 30862c153b69..4b1d47fdfe8c 100644 --- a/src/Components/Web/src/Virtualization/ItemsProviderResult.cs +++ b/src/Components/Web/src/Virtualization/ItemsProviderResult.cs @@ -3,7 +3,7 @@ using System.Collections.Generic; -namespace Microsoft.AspNetCore.Components.Web +namespace Microsoft.AspNetCore.Components.Web.Virtualization { /// /// Represents the result of a . diff --git a/src/Components/Web/src/Virtualization/PlaceholderContext.cs b/src/Components/Web/src/Virtualization/PlaceholderContext.cs index 42192008f47e..d8b73d46abe5 100644 --- a/src/Components/Web/src/Virtualization/PlaceholderContext.cs +++ b/src/Components/Web/src/Virtualization/PlaceholderContext.cs @@ -1,7 +1,7 @@ // Copyright (c) .NET Foundation. All rights reserved. // Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information. -namespace Microsoft.AspNetCore.Components.Web +namespace Microsoft.AspNetCore.Components.Web.Virtualization { /// /// Contains context for a placeholder in a virtualized list. diff --git a/src/Components/Web/src/Virtualization/Virtualize.cs b/src/Components/Web/src/Virtualization/Virtualize.cs index 6e9eca2afc83..fda2e24c480a 100644 --- a/src/Components/Web/src/Virtualization/Virtualize.cs +++ b/src/Components/Web/src/Virtualization/Virtualize.cs @@ -9,7 +9,7 @@ using Microsoft.AspNetCore.Components.Rendering; using Microsoft.JSInterop; -namespace Microsoft.AspNetCore.Components.Web +namespace Microsoft.AspNetCore.Components.Web.Virtualization { /// /// Provides functionality for rendering a virtualized list of items. @@ -56,7 +56,7 @@ public sealed class Virtualize : ComponentBase, IVirtualizeJsCallbacks, I /// Gets or sets the item template for the list. /// [Parameter] - public RenderFragment? Item { get; set; } + public RenderFragment? ItemContent { get; set; } /// /// Gets or sets the template for items that have not yet been loaded in memory. @@ -113,7 +113,7 @@ protected override void OnParametersSet() $"and non-null."); } - _itemTemplate = Item ?? ChildContent; + _itemTemplate = ItemContent ?? ChildContent; _placeholder = Placeholder ?? DefaultPlaceholder; } diff --git a/src/Components/Web/src/Virtualization/VirtualizeJsInterop.cs b/src/Components/Web/src/Virtualization/VirtualizeJsInterop.cs index 99f5e96a9d88..2b655d1f7ea5 100644 --- a/src/Components/Web/src/Virtualization/VirtualizeJsInterop.cs +++ b/src/Components/Web/src/Virtualization/VirtualizeJsInterop.cs @@ -5,7 +5,7 @@ using System.Threading.Tasks; using Microsoft.JSInterop; -namespace Microsoft.AspNetCore.Components.Web +namespace Microsoft.AspNetCore.Components.Web.Virtualization { internal class VirtualizeJsInterop : IAsyncDisposable { diff --git a/src/Components/Web/test/Virtualization/VirtualizeTest.cs b/src/Components/Web/test/Virtualization/VirtualizeTest.cs index 801ecd2d484f..cf2cd2a281f3 100644 --- a/src/Components/Web/test/Virtualization/VirtualizeTest.cs +++ b/src/Components/Web/test/Virtualization/VirtualizeTest.cs @@ -7,7 +7,7 @@ using System.Threading.Tasks; using Microsoft.AspNetCore.Components.Rendering; using Microsoft.AspNetCore.Components.Test.Helpers; -using Microsoft.AspNetCore.Components.Web; +using Microsoft.AspNetCore.Components.Web.Virtualization; using Microsoft.Extensions.DependencyInjection; using Microsoft.JSInterop; using Moq; diff --git a/src/Components/test/testassets/BasicTestApp/VirtualizationComponent.razor b/src/Components/test/testassets/BasicTestApp/VirtualizationComponent.razor index 315d6537cc57..58f1e7d20814 100644 --- a/src/Components/test/testassets/BasicTestApp/VirtualizationComponent.razor +++ b/src/Components/test/testassets/BasicTestApp/VirtualizationComponent.razor @@ -18,9 +18,9 @@ Cancellation count: @asyncCancellationCount
- +
Item @context
- +
Loading item @context.Index...
 diff --git a/src/Components/test/testassets/BasicTestApp/_Imports.razor b/src/Components/test/testassets/BasicTestApp/_Imports.razor index 77285129dabe..a71616835c7b 100644 --- a/src/Components/test/testassets/BasicTestApp/_Imports.razor +++ b/src/Components/test/testassets/BasicTestApp/_Imports.razor @@ -1 +1,2 @@ @using Microsoft.AspNetCore.Components.Web +@using Microsoft.AspNetCore.Components.Web.Virtualization diff --git a/src/ProjectTemplates/Web.ProjectTemplates/content/BlazorServerWeb-CSharp/_Imports.razor b/src/ProjectTemplates/Web.ProjectTemplates/content/BlazorServerWeb-CSharp/_Imports.razor index 4fe5a889de3e..48dcfafe899e 100644 --- a/src/ProjectTemplates/Web.ProjectTemplates/content/BlazorServerWeb-CSharp/_Imports.razor +++ b/src/ProjectTemplates/Web.ProjectTemplates/content/BlazorServerWeb-CSharp/_Imports.razor @@ -4,6 +4,7 @@ @using Microsoft.AspNetCore.Components.Forms @using Microsoft.AspNetCore.Components.Routing @using Microsoft.AspNetCore.Components.Web +@using Microsoft.AspNetCore.Components.Web.Virtualization @using Microsoft.JSInterop @using BlazorServerWeb_CSharp @using BlazorServerWeb_CSharp.Shared diff --git a/src/ProjectTemplates/Web.ProjectTemplates/content/ComponentsWebAssembly-CSharp/Client/_Imports.razor b/src/ProjectTemplates/Web.ProjectTemplates/content/ComponentsWebAssembly-CSharp/Client/_Imports.razor index ac695bb5b1b2..e4e4f5afbfff 100644 --- a/src/ProjectTemplates/Web.ProjectTemplates/content/ComponentsWebAssembly-CSharp/Client/_Imports.razor +++ b/src/ProjectTemplates/Web.ProjectTemplates/content/ComponentsWebAssembly-CSharp/Client/_Imports.razor @@ -6,6 +6,7 @@ @using Microsoft.AspNetCore.Components.Forms @using Microsoft.AspNetCore.Components.Routing @using Microsoft.AspNetCore.Components.Web +@using Microsoft.AspNetCore.Components.Web.Virtualization @using Microsoft.AspNetCore.Components.WebAssembly.Http @using Microsoft.JSInterop @*#if (!Hosted) From 57d8416b1e98d358caae72764dd4f14151f725a7 Mon Sep 17 00:00:00 2001 From: Mackinnon Buck Date: Mon, 3 Aug 2020 12:05:19 -0700 Subject: [PATCH 20/21] Update VirtualizationComponent.razor --- .../testassets/BasicTestApp/VirtualizationComponent.razor | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/src/Components/test/testassets/BasicTestApp/VirtualizationComponent.razor b/src/Components/test/testassets/BasicTestApp/VirtualizationComponent.razor index 58f1e7d20814..95e01ed0ca3d 100644 --- a/src/Components/test/testassets/BasicTestApp/VirtualizationComponent.razor +++ b/src/Components/test/testassets/BasicTestApp/VirtualizationComponent.razor @@ -47,9 +47,11 @@ async ValueTask> GetItemsAsync(ItemsProviderRequest request) { + var loadingTask = asyncTcs.Task; + var registration = request.CancellationToken.Register(() => CancelLoadingAsync(request.CancellationToken)); - await asyncTcs.Task; + await loadingTask; registration.Dispose(); From c091b1ee0b78d54796c5c0c4bf932a5424c42360 Mon Sep 17 00:00:00 2001 From: Mackinnon Buck Date: Mon, 3 Aug 2020 15:51:54 -0700 Subject: [PATCH 21/21] Changed the item template to require a key --- src/Components/Web/src/Virtualization/Virtualize.cs | 9 ++++----- .../BasicTestApp/VirtualizationComponent.razor | 6 +++--- 2 files changed, 7 insertions(+), 8 deletions(-) diff --git a/src/Components/Web/src/Virtualization/Virtualize.cs b/src/Components/Web/src/Virtualization/Virtualize.cs index fda2e24c480a..97e6e04aa527 100644 --- a/src/Components/Web/src/Virtualization/Virtualize.cs +++ b/src/Components/Web/src/Virtualization/Virtualize.cs @@ -147,21 +147,20 @@ protected override void BuildRenderTree(RenderTreeBuilder builder) var renderIndex = _itemsBefore; var placeholdersBeforeCount = Math.Min(_loadedItemsStartIndex, lastItemIndex); - // This is a rare case where it's valid for the sequence number to be programmatically incremented. - // This is only true because we know for certain that no other content will be alongside it. - builder.OpenRegion(3); // Render placeholders before the loaded items. for (; renderIndex < placeholdersBeforeCount; renderIndex++) { + // This is a rare case where it's valid for the sequence number to be programmatically incremented. + // This is only true because we know for certain that no other content will be alongside it. builder.AddContent(renderIndex, _placeholder, new PlaceholderContext(renderIndex)); } builder.CloseRegion(); // Render the loaded items. - if (_loadedItems != null) + if (_loadedItems != null && _itemTemplate != null) { var itemsToShow = _loadedItems .Skip(_itemsBefore - _loadedItemsStartIndex) @@ -171,7 +170,7 @@ protected override void BuildRenderTree(RenderTreeBuilder builder) foreach (var item in itemsToShow) { - builder.AddContent(renderIndex, _itemTemplate, item); + _itemTemplate(item)(builder); renderIndex++; } diff --git a/src/Components/test/testassets/BasicTestApp/VirtualizationComponent.razor b/src/Components/test/testassets/BasicTestApp/VirtualizationComponent.razor index 95e01ed0ca3d..29aba9ea3e3b 100644 --- a/src/Components/test/testassets/BasicTestApp/VirtualizationComponent.razor +++ b/src/Components/test/testassets/BasicTestApp/VirtualizationComponent.razor @@ -7,7 +7,7 @@ Synchronous:
-
Item @context
+
Item @context

@@ -19,7 +19,7 @@
-
Item @context
+
Item @context
Loading item @context.Index...
@@ -31,7 +31,7 @@

Viewport as root:
-

Item @context
+
Item @context