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+/**
+ * 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
+ * @output wp-admin/js/accordion.js
+ */
+
+( function( $ ){
+
+ $( document ).ready( function () {
+
+ // 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;
+ }
+
+ e.preventDefault(); // Keep this AFTER the key filter above
+
+ accordionSwitch( $( this ) );
+ });
+
+ });
+
+ /**
+ * 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' ),
+ 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' );
+
+ // 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( '.accordion-section-content' ).show().slideUp( 150 );
+ content.toggle( false ).slideToggle( 150 );
+ section.toggleClass( 'open' );
+ }
+
+ // We have to wait for the animations to finish
+ setTimeout(function(){
+ container.removeClass( 'opening' );
+ }, 150);
+
+ // 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);