<template> <DocSectionText id="accessibility" label="Accessibility" v-bind="$attrs"> <h3>Screen Reader</h3> <p> Accordion header elements have a <i>button</i> role, an <i>aria-label</i> defined using the <i>label</i> property of the menuitem model and <i>aria-controls</i> to define the id of the content section along with <i>aria-expanded</i> for the visibility state. </p> <p>The content of an accordion panel uses <i>region</i> role, defines an id that matches the <i>aria-controls</i> of the header and <i>aria-labelledby</i> referring to the id of the header.</p> <p> The tree elements has a <i>tree</i> as the role and each menu item has a <i>treeitem</i> role along with <i>aria-label</i>, <i>aria-selected</i> and <i>aria-expanded</i> attributes. The container element of a treenode has the <i>group</i> role. The <i>aria-setsize</i>, <i>aria-posinset</i> and <i>aria-level</i> attributes are calculated implicitly and added to each treeitem. </p> <h3>Header Keyboard Support</h3> <div class="doc-tablewrapper"> <table class="doc-table"> <thead> <tr> <th>Key</th> <th>Function</th> </tr> </thead> <tbody> <tr> <td> <i>tab</i> </td> <td>Moves focus to the next the focusable element in the page tab sequence.</td> </tr> <tr> <td><i>shift</i> + <i>tab</i></td> <td>Moves focus to the previous the focusable element in the page tab sequence.</td> </tr> <tr> <td> <i>enter</i> </td> <td>Toggles the visibility of the content.</td> </tr> <tr> <td> <i>space</i> </td> <td>Toggles the visibility of the content.</td> </tr> <tr> <td> <i>down arrow</i> </td> <td>Moves focus to the next header. If focus is on the last header, moves focus to the first header.</td> </tr> <tr> <td> <i>up arrow</i> </td> <td>Moves focus to the previous header. If focus is on the first header, moves focus to the last header.</td> </tr> <tr> <td> <i>home</i> </td> <td>Moves focus to the first header.</td> </tr> <tr> <td> <i>end</i> </td> <td>Moves focus to the last header.</td> </tr> </tbody> </table> </div> </DocSectionText> </template>