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Add sessionStorage based scroll memory for Dartdoc's scrolling divs (#1917)
* Link to source now works, minus icons * Add material icons * Refactor dartdoc_test to avoid asynchronous delete collisions * dartfmt * Fix windows * dartfmt * Tweak padding and change icon to description * Fix styles to match dartlang site * Review comments * Add example and use it in the dartdoc package. * dartfmt * Add lscache and give us some scroll memory * Review comment * Use sessionStorage. * Remove setInterval (no longer needed without localStorage) * Use try-finally and ordering to reduce the risk we might generate a blank page.
1 parent 2aa6060 commit 733992b

17 files changed

+117
-43
lines changed

‎lib/resources/script.js

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@@ -27,6 +27,67 @@ function initSideNav() {
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}
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}
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function saveLeftScroll() {
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var leftSidebar = document.getElementById('dartdoc-sidebar-left');
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sessionStorage.setItem('dartdoc-sidebar-left-scrollt', leftSidebar.scrollTop);
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sessionStorage.setItem('dartdoc-sidebar-left-scrolll', leftSidebar.scrollLeft);
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}
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function saveMainContentScroll() {
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var mainContent = document.getElementById('dartdoc-main-content');
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sessionStorage.setItem('dartdoc-main-content-scrollt', mainContent.scrollTop);
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sessionStorage.setItem('dartdoc-main-content-scrolll', mainContent.scrollLeft);
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}
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function saveRightScroll() {
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var rightSidebar = document.getElementById('dartdoc-sidebar-right');
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sessionStorage.setItem('dartdoc-sidebar-right-scrollt', rightSidebar.scrollTop);
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sessionStorage.setItem('dartdoc-sidebar-right-scrolll', rightSidebar.scrollLeft);
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}
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function restoreScrolls() {
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var leftSidebar = document.getElementById('dartdoc-sidebar-left');
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var mainContent = document.getElementById('dartdoc-main-content');
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var rightSidebar = document.getElementById('dartdoc-sidebar-right');
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try {
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var leftSidebarX = sessionStorage.getItem('dartdoc-sidebar-left-scrolll');
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var leftSidebarY = sessionStorage.getItem('dartdoc-sidebar-left-scrollt');
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var mainContentX = sessionStorage.getItem('dartdoc-main-content-scrolll');
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var mainContentY = sessionStorage.getItem('dartdoc-main-content-scrollt');
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var rightSidebarX = sessionStorage.getItem('dartdoc-sidebar-right-scrolll');
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var rightSidebarY = sessionStorage.getItem('dartdoc-sidebar-right-scrollt');
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leftSidebar.scrollTo(leftSidebarX, leftSidebarY);
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mainContent.scrollTo(mainContentX, mainContentY);
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rightSidebar.scrollTo(rightSidebarX, rightSidebarY);
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} finally {
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// Set visibility to visible after scroll to prevent the brief appearance of the
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// panel in the wrong position.
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leftSidebar.style.visibility = 'visible';
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mainContent.style.visibility = 'visible';
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rightSidebar.style.visibility = 'visible';
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}
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}
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function initScrollSave() {
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var leftSidebar = document.getElementById('dartdoc-sidebar-left');
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var mainContent = document.getElementById('dartdoc-main-content');
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var rightSidebar = document.getElementById('dartdoc-sidebar-right');
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// For portablility, use two different ways of attaching saveLeftScroll to events.
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// Keep the scroll position from expiring from the cache for a page that's been displayed
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// a long time but not moved by re-saving its position every hour.
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leftSidebar.onscroll = saveLeftScroll;
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leftSidebar.addEventListener("scroll", saveLeftScroll, true);
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mainContent.onscroll = saveMainContentScroll;
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mainContent.addEventListener("scroll", saveMainContentScroll, true);
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rightSidebar.onscroll = saveRightScroll;
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rightSidebar.addEventListener("scroll", saveRightScroll, true);
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}
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function initSearch(name) {
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var searchIndex; // the JSON data
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@@ -193,8 +254,11 @@ function initSearch(name) {
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}
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document.addEventListener("DOMContentLoaded", function() {
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// Place this first so that unexpected exceptions in other JavaScript do not block page visibility.
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restoreScrolls();
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hljs.initHighlightingOnLoad();
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initSideNav();
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initScrollSave();
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initSearch("search-box");
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initSearch("search-body");
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initSearch("search-sidebar");

‎lib/resources/styles.css

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@@ -80,6 +80,7 @@ main {
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overflow-y: scroll;
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padding: 20px 0 15px 30px;
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margin: 5px 20px 0 0;
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visibility: hidden; /* shown by Javascript after scroll position restore */
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}
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::-webkit-scrollbar-button{ display: none; height: 13px; border-radius: 0px; background-color: #AAA; }
@@ -95,6 +96,7 @@ main {
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flex: 1;
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overflow-y: scroll;
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padding: 10px 20px 0 20px;
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visibility: hidden; /* shown by Javascript after scroll position restore */
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}
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.sidebar-offcanvas-right {
@@ -103,6 +105,7 @@ main {
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padding: 20px 15px 15px 15px;
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margin-top: 5px;
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margin-right: 20px;
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visibility: hidden; /* shown by Javascript after scroll position restore */
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}
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/* end for layout */
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@@ -788,6 +791,7 @@ button {
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padding: 10px;
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margin: 10px 10px;
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box-shadow: 5px 5px 5px 5px #444444;
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visibility: hidden; /* shown by Javascript after scroll position restore */
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}
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ol#sidebar-nav {

‎lib/templates/404error.html

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{{>head}}
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<div class="col-xs-6 col-sm-3 col-md-2 sidebar sidebar-offcanvas-left">
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<div id="dartdoc-sidebar-left" class="col-xs-6 col-sm-3 col-md-2 sidebar sidebar-offcanvas-left">
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{{>search_sidebar}}
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<h5><span class="package-name">{{self.name}}</span> <span class="package-kind">{{self.kind}}</span></h5>
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{{>packages}}
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</div>
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<div class="col-xs-12 col-sm-9 col-md-8 main-content">
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<div id="dartdoc-main-content" class="col-xs-12 col-sm-9 col-md-8 main-content">
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<h1>404: Something's gone wrong :-(</h1>
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<section class="desc">
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</section>
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</div> <!-- /.main-content -->
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<div id="dartdoc-sidebar-right" class="col-xs-6 col-sm-6 col-md-2 sidebar sidebar-offcanvas-right">
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</div>
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{{>footer}}

‎lib/templates/category.html

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{{>head}}
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<div class="col-xs-6 col-sm-3 col-md-2 sidebar sidebar-offcanvas-left">
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<div id="dartdoc-sidebar-left" class="col-xs-6 col-sm-3 col-md-2 sidebar sidebar-offcanvas-left">
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{{>search_sidebar}}
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<h5><span class="package-name">{{parent.name}}</span> <span class="package-kind">{{parent.kind}}</span></h5>
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{{>packages}}
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</div>
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<div class="col-xs-12 col-sm-9 col-md-8 main-content">
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<div id="dartdoc-main-content" class="col-xs-12 col-sm-9 col-md-8 main-content">
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{{#self}}
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<h1>{{name}} {{kind}}</h1>
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{{>documentation}}
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{{/self}}
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</div> <!-- /.main-content -->
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<div class="col-xs-6 col-sm-6 col-md-2 sidebar sidebar-offcanvas-right">
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<div id="dartdoc-sidebar-right" class="col-xs-6 col-sm-6 col-md-2 sidebar sidebar-offcanvas-right">
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<h5>{{self.name}} {{self.kind}}</h5>
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{{>sidebar_for_category}}
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</div><!--/sidebar-offcanvas-right-->

‎lib/templates/class.html

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{{>head}}
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<div class="col-xs-6 col-sm-3 col-md-2 sidebar sidebar-offcanvas-left">
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<div id="dartdoc-sidebar-left" class="col-xs-6 col-sm-3 col-md-2 sidebar sidebar-offcanvas-left">
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{{>search_sidebar}}
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<h5>{{parent.name}} {{parent.kind}}</h5>
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{{>sidebar_for_library}}
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</div>
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<div class="col-xs-12 col-sm-9 col-md-8 main-content">
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<div id="dartdoc-main-content" class="col-xs-12 col-sm-9 col-md-8 main-content">
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{{#self}}
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<div>{{>source_link}}<h1>{{{nameWithGenerics}}} {{kind}} {{>categorization}}</h1></div>
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{{/self}}
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</div> <!-- /.main-content -->
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<div class="col-xs-6 col-sm-6 col-md-2 sidebar sidebar-offcanvas-right">
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<div id="dartdoc-sidebar-right" class="col-xs-6 col-sm-6 col-md-2 sidebar sidebar-offcanvas-right">
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{{>sidebar_for_class}}
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</div><!--/.sidebar-offcanvas-->
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‎lib/templates/constant.html

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{{>head}}
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<div class="col-xs-6 col-sm-3 col-md-2 sidebar sidebar-offcanvas-left">
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<div id="dartdoc-sidebar-left" class="col-xs-6 col-sm-3 col-md-2 sidebar sidebar-offcanvas-left">
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{{>search_sidebar}}
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<h5>{{parent.name}} {{parent.kind}}</h5>
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{{>sidebar_for_class}}
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</div><!--/.sidebar-offcanvas-left-->
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<div class="col-xs-12 col-sm-9 col-md-8 main-content">
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<div id="dartdoc-main-content" class="col-xs-12 col-sm-9 col-md-8 main-content">
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{{#self}}
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<div>{{>source_link}}<h1>{{{name}}} {{kind}}</h1></div>
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{{/self}}
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</div> <!-- /.main-content -->
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<div class="col-xs-6 col-sm-6 col-md-2 sidebar sidebar-offcanvas-right">
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<div id="dartdoc-sidebar-right" class="col-xs-6 col-sm-6 col-md-2 sidebar sidebar-offcanvas-right">
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</div><!--/.sidebar-offcanvas-->
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{{>footer}}

‎lib/templates/constructor.html

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{{>head}}
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<div class="col-xs-6 col-sm-3 col-md-2 sidebar sidebar-offcanvas-left">
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<div id="dartdoc-sidebar-left" class="col-xs-6 col-sm-3 col-md-2 sidebar sidebar-offcanvas-left">
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{{>search_sidebar}}
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<h5>{{parent.name}} {{parent.kind}}</h5>
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{{>sidebar_for_class}}
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</div><!--/.sidebar-offcanvas-left-->
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<div class="col-xs-12 col-sm-9 col-md-8 main-content">
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<div id="dartdoc-main-content" class="col-xs-12 col-sm-9 col-md-8 main-content">
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{{#self}}
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<div>{{>source_link}}<h1>{{{nameWithGenerics}}} {{kind}}</h1></div>
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{{/self}}
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{{/constructor}}
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</div> <!-- /.main-content -->
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<div class="col-xs-6 col-sm-6 col-md-2 sidebar sidebar-offcanvas-right">
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<div id="dartdoc-sidebar-right" class="col-xs-6 col-sm-6 col-md-2 sidebar sidebar-offcanvas-right">
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</div><!--/.sidebar-offcanvas-->
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{{>footer}}

‎lib/templates/enum.html

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{{>head}}
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<div class="col-xs-6 col-sm-3 col-md-2 sidebar sidebar-offcanvas-left">
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<div id="dartdoc-sidebar-left" class="col-xs-6 col-sm-3 col-md-2 sidebar sidebar-offcanvas-left">
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{{>search_sidebar}}
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<h5>{{parent.name}} {{parent.kind}}</h5>
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{{>sidebar_for_library}}
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</div>
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<div class="col-xs-12 col-sm-9 col-md-8 main-content">
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<div id="dartdoc-main-content" class="col-xs-12 col-sm-9 col-md-8 main-content">
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{{#self}}
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<div>{{>source_link}}<h1>{{{name}}} {{kind}} {{>categorization}}</h1></div>
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{{/self}}
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{{/eNum}}
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</div> <!-- /.main-content -->
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<div class="col-xs-6 col-sm-6 col-md-2 sidebar sidebar-offcanvas-right">
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<div id="dartdoc-sidebar-right" class="col-xs-6 col-sm-6 col-md-2 sidebar sidebar-offcanvas-right">
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{{>sidebar_for_enum}}
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</div><!--/.sidebar-offcanvas-->
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‎lib/templates/function.html

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{{>head}}
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<div class="col-xs-6 col-sm-3 col-md-2 sidebar sidebar-offcanvas-left">
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<div id="dartdoc-sidebar-left" class="col-xs-6 col-sm-3 col-md-2 sidebar sidebar-offcanvas-left">
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{{>search_sidebar}}
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<h5>{{parent.name}} {{parent.kind}}</h5>
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{{>sidebar_for_library}}
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</div><!--/.sidebar-offcanvas-left-->
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<div class="col-xs-12 col-sm-9 col-md-8 main-content">
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<div id="dartdoc-main-content" class="col-xs-12 col-sm-9 col-md-8 main-content">
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{{#self}}
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<div>{{>source_link}}<h1>{{{nameWithGenerics}}} {{kind}} {{>categorization}}</h1></div>
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{{/self}}
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{{/function}}
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</div> <!-- /.main-content -->
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<div class="col-xs-6 col-sm-6 col-md-2 sidebar sidebar-offcanvas-right">
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<div id="dartdoc-sidebar-right" class="col-xs-6 col-sm-6 col-md-2 sidebar sidebar-offcanvas-right">
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</div><!--/.sidebar-offcanvas-->
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{{>footer}}

‎lib/templates/index.html

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{{>head}}
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<div class="col-xs-6 col-sm-3 col-md-2 sidebar sidebar-offcanvas-left">
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<div id="dartdoc-sidebar-left" class="col-xs-6 col-sm-3 col-md-2 sidebar sidebar-offcanvas-left">
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{{>search_sidebar}}
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<h5 class="hidden-xs"><span class="package-name">{{self.name}}</span> <span class="package-kind">{{self.kind}}</span></h5>
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{{>packages}}
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</div>
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<div class="col-xs-12 col-sm-9 col-md-8 main-content">
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<div id="dartdoc-main-content" class="col-xs-12 col-sm-9 col-md-8 main-content">
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{{#packageGraph.defaultPackage}}
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{{>documentation}}
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{{/packageGraph.defaultPackage}}
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</div> <!-- /.main-content -->
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<div id="dartdoc-sidebar-right" class="col-xs-6 col-sm-6 col-md-2 sidebar sidebar-offcanvas-right">
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</div>
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{{>footer}}

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