Accordion

packages/@adobe/spectrum-css-temp/components/accordion/index.css

@@ -32,7 +32,7 @@ governing permissions and limitations under the License.
 .spectrum-Accordion-itemIndicator {
   display: block;
 
-  padding-inline-start: var(--spectrum-accordion-icon-spacing);
+  padding-inline-start: var(--spectrum-accordion-icon-gap);
   padding-inline-end: var(--spectrum-accordion-icon-gap);
 
   transition: transform ease var(--spectrum-global-animation-duration-100);
@@ -66,7 +66,7 @@ governing permissions and limitations under the License.
   box-sizing: border-box;
   /* left padding takes into account the icon's size as well as the focus state's left border */
   padding-block: var(--spectrum-accordion-item-title-padding-y);
-  padding-inline-start: 2px;
+  padding-inline-start: var(--spectrum-accordion-icon-gap);
   padding-inline-end: var(--spectrum-accordion-item-padding);
   margin: 0;
 
@@ -111,7 +111,7 @@ governing permissions and limitations under the License.
 }
 
 .spectrum-Accordion-item {
-  &.is-open {
+  &.is-expanded {
     > .spectrum-Accordion-itemHeading {
       > .spectrum-Accordion-itemHeader {
         > .spectrum-Accordion-itemIndicator {
@@ -126,7 +126,7 @@ governing permissions and limitations under the License.
     }
 
     > .spectrum-Accordion-itemHeader::after {
-      /* No bottom border when open, so be less tall */
+      /* No bottom border when expanded, so be less tall */
       height: var(--spectrum-accordion-item-height-actual);
     }
 

packages/@adobe/spectrum-css-temp/components/accordion/skin.css

@@ -39,7 +39,7 @@ governing permissions and limitations under the License.
 }
 
 .spectrum-Accordion-item {
-  &.is-open {
+  &.is-expanded {
     .spectrum-Accordion-itemHeader {
       &:hover {
         background-color: transparent;

packages/@react-aria/accordion/src/useAccordion.ts

@@ -34,6 +34,9 @@ export interface AccordionItemAria {
   regionProps: DOMAttributes
 }
 
+/**
+ * @deprecated Use useDisclosure from `@react-aria/disclosure` instead.
+ */
 export function useAccordionItem<T>(props: AccordionItemAriaProps<T>, state: TreeState<T>, ref: RefObject<HTMLButtonElement | null>): AccordionItemAria {
   let {item} = props;
   let buttonId = useId();
@@ -65,6 +68,9 @@ export function useAccordionItem<T>(props: AccordionItemAriaProps<T>, state: Tre
   };
 }
 
+/**
+ * @deprecated Use useDisclosure from `@react-aria/disclosure` instead.
+ */
 export function useAccordion<T>(props: AriaAccordionProps<T>, state: TreeState<T>, ref: RefObject<HTMLDivElement | null>): AccordionAria {
   let {listProps} = useSelectableList({
     ...props,

packages/@react-aria/disclosure/README.md

@@ -0,0 +1,3 @@
+# @react-aria/disclosure
+
+This package is part of [react-spectrum](https://github.com/adobe/react-spectrum). See the repo for more details.

packages/@react-aria/disclosure/index.ts

@@ -0,0 +1,13 @@
+/*
+ * Copyright 2020 Adobe. All rights reserved.
+ * This file is licensed to you under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License. You may obtain a copy
+ * of the License at http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software distributed under
+ * the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR REPRESENTATIONS
+ * OF ANY KIND, either express or implied. See the License for the specific language
+ * governing permissions and limitations under the License.
+ */
+
+export * from './src';

packages/@react-aria/disclosure/package.json

@@ -0,0 +1,43 @@
+{
+  "name": "@react-aria/disclosure",
+  "version": "3.0.0-alpha.0",
+  "description": "Spectrum UI components in React",
+  "license": "Apache-2.0",
+  "main": "dist/main.js",
+  "module": "dist/module.js",
+  "exports": {
+    "types": "./dist/types.d.ts",
+    "import": "./dist/import.mjs",
+    "require": "./dist/main.js"
+  },
+  "types": "dist/types.d.ts",
+  "source": "src/index.ts",
+  "files": [
+    "dist",
+    "src"
+  ],
+  "sideEffects": false,
+  "repository": {
+    "type": "git",
+    "url": "https://github.com/adobe/react-spectrum"
+  },
+  "dependencies": {
+    "@react-aria/button": "^3.9.8",
+    "@react-aria/selection": "^3.19.3",
+    "@react-aria/ssr": "^3.9.5",
+    "@react-aria/utils": "^3.25.2",
+    "@react-stately/disclosure": "3.0.0-alpha.0",
+    "@react-stately/toggle": "^3.7.7",
+    "@react-stately/tree": "^3.8.4",
+    "@react-types/button": "^3.9.6",
+    "@react-types/shared": "^3.24.1",
+    "@swc/helpers": "^0.5.0"
+  },
+  "peerDependencies": {
+    "react": "^16.8.0 || ^17.0.0-rc.1 || ^18.0.0 || ^19.0.0",
+    "react-dom": "^16.8.0 || ^17.0.0-rc.1 || ^18.0.0 || ^19.0.0"
+  },
+  "publishConfig": {
+    "access": "public"
+  }
+}

packages/@react-aria/disclosure/src/index.ts

@@ -0,0 +1,13 @@
+/*
+ * Copyright 2020 Adobe. All rights reserved.
+ * This file is licensed to you under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License. You may obtain a copy
+ * of the License at http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing, software distributed under
+ * the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR REPRESENTATIONS
+ * OF ANY KIND, either express or implied. See the License for the specific language
+ * governing permissions and limitations under the License.
+ */
+export {useDisclosure} from './useDisclosure';
+export type {DisclosureAria, AriaDisclosureProps} from './useDisclosure';

packages/@react-aria/disclosure/src/useDisclosure.ts

@@ -0,0 +1,93 @@
+/*
+ * Copyright 2024 Adobe. All rights reserved.
+ * This file is licensed to you under the Apache License, Version 2.0 (the 'License');
+ * you may not use this file except in compliance with the License. You may obtain a copy
+ * of the License at http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software distributed under
+ * the License is distributed on an 'AS IS' BASIS, WITHOUT WARRANTIES OR REPRESENTATIONS
+ * OF ANY KIND, either express or implied. See the License for the specific language
+ * governing permissions and limitations under the License.
+ */
+
+import {AriaButtonProps} from '@react-types/button';
+import {DisclosureState} from '@react-stately/disclosure';
+import {HTMLAttributes, RefObject, useEffect} from 'react';
+import {useEvent, useId} from '@react-aria/utils';
+import {useIsSSR} from '@react-aria/ssr';
+
+export interface AriaDisclosureProps {
+  /** Whether the disclosure is disabled. */
+  isDisabled?: boolean,
+  /** Handler that is called when the disclosure's expanded state changes. */
+  onExpandedChange?: (isExpanded: boolean) => void,
+  /** Whether the disclosure is expanded (controlled). */
+  isExpanded?: boolean,
+  /** Whether the disclosure is expanded by default (uncontrolled). */
+  defaultExpanded?: boolean
+}
+
+export interface DisclosureAria {
+  /** Props for the disclosure button. */
+  buttonProps: AriaButtonProps,
+  /** Props for the content element. */
+  contentProps: HTMLAttributes<HTMLElement>
+}
+
+/**
+ * Provides the behavior and accessibility implementation for a disclosure component.
+ * @param props - Props for the disclosure.
+ * @param state - State for the disclosure, as returned by `useDisclosureState`.
+ * @param ref - A ref for the disclosure content.
+ */
+export function useDisclosure(props: AriaDisclosureProps, state: DisclosureState, ref?: RefObject<Element | null>): DisclosureAria {
+  let {
+    isDisabled
+  } = props;
+  let triggerId = useId();
+  let contentId = useId();
+  let isControlled = props.isExpanded !== undefined;
+  let isSSR = useIsSSR();
+  let supportsBeforeMatch = !isSSR && 'onbeforematch' in document.body;
+
+  // @ts-ignore https://github.com/facebook/react/pull/24741
+  useEvent(ref, 'beforematch', supportsBeforeMatch ? () => state.expand() : null);
+
+  useEffect(() => {
+    // Until React supports hidden="until-found": https://github.com/facebook/react/pull/24741
+    if (supportsBeforeMatch && ref?.current && !isControlled && !isDisabled) {
+      if (state.isExpanded) {
+        // @ts-ignore
+        ref.current.hidden = undefined;
+      } else {
+        // @ts-ignore
+        ref.current.hidden = 'until-found';
+      }
+    }
+  }, [isControlled, ref, props.isExpanded, state, supportsBeforeMatch, isDisabled]);
+
+  return {
+    buttonProps: {
+      id: triggerId,
+      'aria-expanded': state.isExpanded,
+      'aria-controls': contentId,
+      onPress: (e) => {
+        if (e.pointerType !== 'keyboard') {
+          state.toggle();
+        }
+      },
+      isDisabled,
+      onKeyDown(e) {
+        if (!isDisabled && (e.key === 'Enter' || e.key === ' ')) {
+          e.preventDefault();
+          state.toggle();
+        }
+      }
+    },
+    contentProps: {
+      id: contentId,
+      'aria-labelledby': triggerId,
+      hidden: (!supportsBeforeMatch || isControlled) ? !state.isExpanded : true
+    }
+  };
+}

packages/@react-spectrum/accordion/chromatic-fc/Accordion.stories.tsx

@@ -11,16 +11,15 @@
  */
 
 import {Meta} from '@storybook/react';
-import {SpectrumAccordionProps} from '@react-types/accordion';
+import {SpectrumAccordionProps} from '../src/Accordion';
 import {Template} from '../chromatic/Accordion.stories';
 
-const meta: Meta<SpectrumAccordionProps<object>> = {
+const meta: Meta<SpectrumAccordionProps> = {
   title: 'Accordion'
 };
 
 export default meta;
 
 export const Default = {
-  render: Template,
-  args: {defaultExpandedKeys: ['shared'], disabledKeys: ['last']}
+  render: Template
 };

packages/@react-spectrum/accordion/chromatic/Accordion.stories.tsx

@@ -10,43 +10,49 @@
  * governing permissions and limitations under the License.
  */
 
-import {Accordion, Item} from '../';
+import {Accordion, Disclosure, DisclosureHeader, DisclosurePanel} from '../';
 import {Meta} from '@storybook/react';
 import React from 'react';
-import {SpectrumAccordionProps} from '@react-types/accordion';
 
-const meta: Meta<SpectrumAccordionProps<object>> = {
+const meta: Meta = {
   title: 'Accordion',
-  component: Accordion,
+  component: Disclosure,
   excludeStories: ['Template']
 };
 
 export default meta;
 
 export const Template = (args) => (
   <Accordion {...args}>
-    <Item key="files" title="Your files">
-      files
-    </Item>
-    <Item key="shared" title="Shared with you">
-      shared
-    </Item>
-    <Item key="last" title="Last item">
-      last
-    </Item>
+    <Disclosure key="files">
+      <DisclosureHeader>
+        Your files
+      </DisclosureHeader>
+      <DisclosurePanel>
+        files
+      </DisclosurePanel>
+    </Disclosure>
+    <Disclosure key="shared">
+      <DisclosureHeader>
+        Shared with you
+      </DisclosureHeader>
+      <DisclosurePanel>
+        shared
+      </DisclosurePanel>
+    </Disclosure>
+    <Disclosure key="last">
+      <DisclosureHeader>
+        Last item
+      </DisclosureHeader>
+      <DisclosurePanel>
+        last
+      </DisclosurePanel>
+    </Disclosure>
   </Accordion>
 );
 
 export const Default = {
   render: Template
 };
 
-export const ExpandedKeys = {
-  render: Template,
-  args: {defaultExpandedKeys: ['shared']}
-};
-
-export const DisabledKeys = {
-  render: Template,
-  args: {disabledKeys: ['shared']}
-};
+// TODO: more stories

packages/@react-spectrum/accordion/package.json

@@ -44,10 +44,10 @@
     "@react-spectrum/utils": "^3.11.9",
     "@react-stately/collections": "^3.10.9",
     "@react-stately/tree": "^3.8.3",
-    "@react-types/accordion": "3.0.0-alpha.23",
     "@react-types/shared": "^3.24.1",
     "@spectrum-icons/ui": "^3.6.9",
-    "@swc/helpers": "^0.5.0"
+    "@swc/helpers": "^0.5.0",
+    "react-aria-components": "^1.3.3"
   },
   "devDependencies": {
     "@adobe/spectrum-css-temp": "3.0.0-alpha.1"