WordPress 4.4.1-scripts

[autoinstalls/wordpress.git] / wp-admin / js / accordion.js

diff --git a/wp-admin/js/accordion.js b/wp-admin/js/accordion.js
index 7bc99ccca8450e82277e9449b47452debcd367ac..af6281546fded9ff51f7a2fb9d9c3f03054dba4c 100644 (file)
--- a/wp-admin/js/accordion.js
+++ b/wp-admin/js/accordion.js
@@ -1,55 +1,93 @@
+/**
+ * Accordion-folding functionality.
+ *
+ * Markup with the appropriate classes will be automatically hidden,
+ * with one section opening at a time when its title is clicked.
+ * Use the following markup structure for accordion behavior:
+ *
+ * <div class="accordion-container">
+ *     <div class="accordion-section open">
+ *             <h3 class="accordion-section-title"></h3>
+ *             <div class="accordion-section-content">
+ *             </div>
+ *     </div>
+ *     <div class="accordion-section">
+ *             <h3 class="accordion-section-title"></h3>
+ *             <div class="accordion-section-content">
+ *             </div>
+ *     </div>
+ *     <div class="accordion-section">
+ *             <h3 class="accordion-section-title"></h3>
+ *             <div class="accordion-section-content">
+ *             </div>
+ *     </div>
+ * </div>
+ *
+ * Note that any appropriate tags may be used, as long as the above classes are present.
+ *
+ * @since 3.6.0.
+ */
+
 ( function( $ ){
 
        $( document ).ready( function () {
 
-               // Expand/Collapse on click
+               // Expand/Collapse accordion sections on click.
                $( '.accordion-container' ).on( 'click keydown', '.accordion-section-title', function( e ) {
-                       if ( e.type === 'keydown' && 13 !== e.which ) // "return" key
-                                       return;
+                       if ( e.type === 'keydown' && 13 !== e.which ) { // "return" key
+                               return;
+                       }
+
                        e.preventDefault(); // Keep this AFTER the key filter above
 
                        accordionSwitch( $( this ) );
                });
 
-               // Re-initialize accordion when screen options are toggled
-               $( '.hide-postbox-tog' ).click( function () {
-                       accordionInit();
-               });
-
        });
 
-       var accordionOptions = $( '.accordion-container li.accordion-section' ),
-               sectionContent   = $( '.accordion-section-content' );
-
-       function accordionInit () {
-               // Rounded corners
-               accordionOptions.removeClass( 'top bottom' );
-               accordionOptions.filter( ':visible' ).first().addClass( 'top' );
-               accordionOptions.filter( ':visible' ).last().addClass( 'bottom' ).find( sectionContent ).addClass( 'bottom' );
-       }
-
+       /**
+        * Close the current accordion section and open a new one.
+        *
+        * @param {Object} el Title element of the accordion section to toggle.
+        * @since 3.6.0
+        */
        function accordionSwitch ( el ) {
                var section = el.closest( '.accordion-section' ),
-                       siblings = section.closest( '.accordion-container' ).find( '.open' ),
-                       content = section.find( sectionContent );
+                       sectionToggleControl = section.find( '[aria-expanded]' ).first(),
+                       container = section.closest( '.accordion-container' ),
+                       siblings = container.find( '.open' ),
+                       siblingsToggleControl = siblings.find( '[aria-expanded]' ).first(),
+                       content = section.find( '.accordion-section-content' );
 
-               if ( section.hasClass( 'cannot-expand' ) )
+               // This section has no content and cannot be expanded.
+               if ( section.hasClass( 'cannot-expand' ) ) {
                        return;
+               }
+
+               // Add a class to the container to let us know something is happening inside.
+               // This helps in cases such as hiding a scrollbar while animations are executing.
+               container.addClass( 'opening' );
 
                if ( section.hasClass( 'open' ) ) {
                        section.toggleClass( 'open' );
                        content.toggle( true ).slideToggle( 150 );
                } else {
+                       siblingsToggleControl.attr( 'aria-expanded', 'false' );
                        siblings.removeClass( 'open' );
-                       siblings.find( sectionContent ).show().slideUp( 150 );
+                       siblings.find( '.accordion-section-content' ).show().slideUp( 150 );
                        content.toggle( false ).slideToggle( 150 );
                        section.toggleClass( 'open' );
                }
 
-               accordionInit();
-       }
+               // We have to wait for the animations to finish
+               setTimeout(function(){
+                   container.removeClass( 'opening' );
+               }, 150);
 
-       // Initialize the accordion (currently just corner fixes)
-       accordionInit();
+               // If there's an element with an aria-expanded attribute, assume it's a toggle control and toggle the aria-expanded value.
+               if ( sectionToggleControl ) {
+                       sectionToggleControl.attr( 'aria-expanded', String( sectionToggleControl.attr( 'aria-expanded' ) === 'false' ) );
+               }
+       }
 
 })(jQuery);