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<title>[35492] trunk/src/wp-includes: WP oEmbed: Improve the Sharing dialog accessibility.</title>
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<dt style="float: left; width: 6em; font-weight: bold">Revision</dt> <dd><a style="font-weight: bold" href="https://core.trac.wordpress.org/changeset/35492">35492</a><script type="application/ld+json">{"@context":"http://schema.org","@type":"EmailMessage","description":"Review this Commit","action":{"@type":"ViewAction","url":"https://core.trac.wordpress.org/changeset/35492","name":"Review Commit"}}</script></dd>
<dt style="float: left; width: 6em; font-weight: bold">Author</dt> <dd>afercia</dd>
<dt style="float: left; width: 6em; font-weight: bold">Date</dt> <dd>2015-11-03 15:48:37 +0000 (Tue, 03 Nov 2015)</dd>
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<pre style='padding-left: 1em; margin: 2em 0; border-left: 2px solid #ccc; line-height: 1.25; font-size: 105%; font-family: sans-serif'>WP oEmbed: Improve the Sharing dialog accessibility.

Improves ARIA attributes, focus handling, and constrains tabbing within the modal dialog.

Fixes <a href="https://core.trac.wordpress.org/ticket/34484">#34484</a>.</pre>

<h3>Modified Paths</h3>
<ul>
<li><a href="#trunksrcwpincludesembedtemplatephp">trunk/src/wp-includes/embed-template.php</a></li>
<li><a href="#trunksrcwpincludesjswpembedtemplatejs">trunk/src/wp-includes/js/wp-embed-template.js</a></li>
</ul>

</div>
<div id="patch">
<h3>Diff</h3>
<a id="trunksrcwpincludesembedtemplatephp"></a>
<div class="modfile"><h4 style="background-color: #eee; color: inherit; margin: 1em 0; padding: 1.3em; font-size: 115%">Modified: trunk/src/wp-includes/embed-template.php</h4>
<pre class="diff"><span>
<span class="info" style="display: block; padding: 0 10px; color: #888">--- trunk/src/wp-includes/embed-template.php  2015-11-03 00:18:07 UTC (rev 35491)
+++ trunk/src/wp-includes/embed-template.php    2015-11-03 15:48:37 UTC (rev 35492)
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -158,35 +158,34 @@
</span><span class="cx" style="display: block; padding: 0 10px">                                                </div>
</span><span class="cx" style="display: block; padding: 0 10px">                                        <?php endif; ?>
</span><span class="cx" style="display: block; padding: 0 10px">                                        <div class="wp-embed-share">
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-                                                <button type="button" class="wp-embed-share-dialog-open"
-                                                       aria-label="<?php esc_attr_e( 'Open sharing dialog' ); ?>">
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+                                         <button type="button" class="wp-embed-share-dialog-open" aria-label="<?php esc_attr_e( 'Open sharing dialog' ); ?>">
</ins><span class="cx" style="display: block; padding: 0 10px">                                                         <span class="dashicons dashicons-share"></span>
</span><span class="cx" style="display: block; padding: 0 10px">                                                </button>
</span><span class="cx" style="display: block; padding: 0 10px">                                        </div>
</span><span class="cx" style="display: block; padding: 0 10px">                                </div>
</span><span class="cx" style="display: block; padding: 0 10px">                        </div>
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-                        <div class="wp-embed-share-dialog hidden">
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+                 <div class="wp-embed-share-dialog hidden" role="dialog" aria-label="<?php esc_attr_e( 'Sharing options' ); ?>">
</ins><span class="cx" style="display: block; padding: 0 10px">                                 <div class="wp-embed-share-dialog-content">
</span><span class="cx" style="display: block; padding: 0 10px">                                        <div class="wp-embed-share-dialog-text">
</span><span class="cx" style="display: block; padding: 0 10px">                                                <ul class="wp-embed-share-tabs" role="tablist">
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-                                                        <li id="wp-embed-share-tab-button-wordpress" class="wp-embed-share-tab-button" role="presentation">
-                                                               <button role="tab" aria-controls="wp-embed-share-tab-wordpress" aria-selected="true" tabindex="0"><?php esc_html_e( 'WordPress Embed' ); ?></button>
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+                                                 <li class="wp-embed-share-tab-button wp-embed-share-tab-button-wordpress" role="presentation">
+                                                               <button type="button" role="tab" aria-controls="wp-embed-share-tab-wordpress" aria-selected="true" tabindex="0"><?php esc_html_e( 'WordPress Embed' ); ?></button>
</ins><span class="cx" style="display: block; padding: 0 10px">                                                         </li>
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-                                                        <li id="wp-embed-share-tab-button-embed" class="wp-embed-share-tab-button" role="presentation">
-                                                               <button role="tab" aria-controls="wp-embed-share-tab-html" aria-selected="false" tabindex="-1"><?php esc_html_e( 'HTML Embed' ); ?></button>
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+                                                 <li class="wp-embed-share-tab-button wp-embed-share-tab-button-html" role="presentation">
+                                                               <button type="button" role="tab" aria-controls="wp-embed-share-tab-html" aria-selected="false" tabindex="-1"><?php esc_html_e( 'HTML Embed' ); ?></button>
</ins><span class="cx" style="display: block; padding: 0 10px">                                                         </li>
</span><span class="cx" style="display: block; padding: 0 10px">                                                </ul>
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-                                                <div id="wp-embed-share-tab-wordpress" class="wp-embed-share-tab" role="tabpanel" aria-labelledby="wp-embed-share-tab-button-wordpress" aria-hidden="false">
-                                                       <input type="text" value="<?php the_permalink(); ?>" class="wp-embed-share-input" tabindex="0" readonly/>
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+                                         <div id="wp-embed-share-tab-wordpress" class="wp-embed-share-tab" role="tabpanel" aria-hidden="false">
+                                                       <input type="text" value="<?php the_permalink(); ?>" class="wp-embed-share-input" aria-describedby="wp-embed-share-description-wordpress" tabindex="0" readonly />
</ins><span class="cx" style="display: block; padding: 0 10px"> 
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-                                                        <p class="wp-embed-share-description">
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+                                                 <p class="wp-embed-share-description" id="wp-embed-share-description-wordpress">
</ins><span class="cx" style="display: block; padding: 0 10px">                                                                 <?php _e( 'Copy and paste this URL into your WordPress site to embed' ); ?>
</span><span class="cx" style="display: block; padding: 0 10px">                                                        </p>
</span><span class="cx" style="display: block; padding: 0 10px">                                                </div>
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-                                                <div id="wp-embed-share-tab-html" class="wp-embed-share-tab" role="tabpanel" aria-labelledby="wp-embed-share-tab-button-html" aria-hidden="true">
-                                                       <textarea class="wp-embed-share-input" tabindex="0" readonly><?php echo esc_textarea( get_post_embed_html( 600, 400 ) ); ?></textarea>
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+                                         <div id="wp-embed-share-tab-html" class="wp-embed-share-tab" role="tabpanel" aria-hidden="true">
+                                                       <textarea class="wp-embed-share-input" aria-describedby="wp-embed-share-description-html" tabindex="0" readonly><?php echo esc_textarea( get_post_embed_html( 600, 400 ) ); ?></textarea>
</ins><span class="cx" style="display: block; padding: 0 10px"> 
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-                                                        <p class="wp-embed-share-description">
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+                                                 <p class="wp-embed-share-description" id="wp-embed-share-description-html">
</ins><span class="cx" style="display: block; padding: 0 10px">                                                                 <?php _e( 'Copy and paste this code into your site to embed' ); ?>
</span><span class="cx" style="display: block; padding: 0 10px">                                                        </p>
</span><span class="cx" style="display: block; padding: 0 10px">                                                </div>
</span></span></pre></div>
<a id="trunksrcwpincludesjswpembedtemplatejs"></a>
<div class="modfile"><h4 style="background-color: #eee; color: inherit; margin: 1em 0; padding: 1.3em; font-size: 115%">Modified: trunk/src/wp-includes/js/wp-embed-template.js</h4>
<pre class="diff"><span>
<span class="info" style="display: block; padding: 0 10px; color: #888">--- trunk/src/wp-includes/js/wp-embed-template.js     2015-11-03 00:18:07 UTC (rev 35491)
+++ trunk/src/wp-includes/js/wp-embed-template.js       2015-11-03 15:48:37 UTC (rev 35492)
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -38,7 +38,8 @@
</span><span class="cx" style="display: block; padding: 0 10px"> 
</span><span class="cx" style="display: block; padding: 0 10px">                function openSharingDialog() {
</span><span class="cx" style="display: block; padding: 0 10px">                        share_dialog.className = share_dialog.className.replace( 'hidden', '' );
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-                        share_input[ 0 ].select();
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+                 // Initial focus should go on the currently selected tab in the dialog.
+                       document.querySelector( '.wp-embed-share-tab-button [aria-selected="true"]' ).focus();
</ins><span class="cx" style="display: block; padding: 0 10px">                 }
</span><span class="cx" style="display: block; padding: 0 10px"> 
</span><span class="cx" style="display: block; padding: 0 10px">                function closeSharingDialog() {
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -47,16 +48,14 @@
</span><span class="cx" style="display: block; padding: 0 10px">                }
</span><span class="cx" style="display: block; padding: 0 10px"> 
</span><span class="cx" style="display: block; padding: 0 10px">                if ( share_dialog_open ) {
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-                        share_dialog_open.addEventListener( 'click', function ( e ) {
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+                 share_dialog_open.addEventListener( 'click', function () {
</ins><span class="cx" style="display: block; padding: 0 10px">                                 openSharingDialog();
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-                                e.preventDefault();
</del><span class="cx" style="display: block; padding: 0 10px">                         } );
</span><span class="cx" style="display: block; padding: 0 10px">                }
</span><span class="cx" style="display: block; padding: 0 10px"> 
</span><span class="cx" style="display: block; padding: 0 10px">                if ( share_dialog_close ) {
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-                        share_dialog_close.addEventListener( 'click', function ( e ) {
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+                 share_dialog_close.addEventListener( 'click', function () {
</ins><span class="cx" style="display: block; padding: 0 10px">                                 closeSharingDialog();
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-                                e.preventDefault();
</del><span class="cx" style="display: block; padding: 0 10px">                         } );
</span><span class="cx" style="display: block; padding: 0 10px">                }
</span><span class="cx" style="display: block; padding: 0 10px"> 
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -110,11 +109,26 @@
</span><span class="cx" style="display: block; padding: 0 10px">                }
</span><span class="cx" style="display: block; padding: 0 10px"> 
</span><span class="cx" style="display: block; padding: 0 10px">                document.addEventListener( 'keydown', function ( e ) {
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-                        if ( e.keyCode === 27 && -1 === share_dialog.className.indexOf( 'hidden' ) ) {
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+                 if ( 27 === e.keyCode && -1 === share_dialog.className.indexOf( 'hidden' ) ) {
</ins><span class="cx" style="display: block; padding: 0 10px">                                 closeSharingDialog();
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+                        } else if ( 9 === e.keyCode ) {
+                               constrainTabbing( e );
</ins><span class="cx" style="display: block; padding: 0 10px">                         }
</span><span class="cx" style="display: block; padding: 0 10px">                }, false );
</span><span class="cx" style="display: block; padding: 0 10px"> 
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+                function constrainTabbing( e ) {
+                       // Need to re-get the selected tab each time.
+                       var firstFocusable = document.querySelector( '.wp-embed-share-tab-button [aria-selected="true"]' );
+
+                       if ( share_dialog_close === e.target && ! e.shiftKey ) {
+                               firstFocusable.focus();
+                               e.preventDefault();
+                       } else if ( firstFocusable === e.target && e.shiftKey ) {
+                               share_dialog_close.focus();
+                               e.preventDefault();
+                       }
+               }
+
</ins><span class="cx" style="display: block; padding: 0 10px">                 if ( window.self === window.top ) {
</span><span class="cx" style="display: block; padding: 0 10px">                        return;
</span><span class="cx" style="display: block; padding: 0 10px">                }
</span></span></pre>
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