Ticket #31527: 31527.patch

wp-content/themes/twentyfifteen/js/functions.js

@@ -47 +47 @@
                         return;
                 }
 
+                // If the window resizes, add or remove ARIA attributes.
+                onResizeARIA = function() {
+                        if ( 955 > $( window ).width() ) {
+                                button.attr( 'aria-expanded', 'false' );
+                                secondary.attr( 'aria-expanded', 'false' );
+                                button.attr( 'aria-controls', 'secondary' );
+                        } else {
+                                button.removeAttr( 'aria-expanded' );
+                                secondary.removeAttr( 'aria-expanded' );
+                                button.removeAttr( 'aria-controls' );
+                        }
+                }
+
+                // Fire the onResize function on resize and load.
+                $( window ).on( 'resize load', onResizeARIA );
+
                 button.on( 'click.twentyfifteen', function() {
                         secondary.toggleClass( 'toggled-on' );
                         secondary.trigger( 'resize' );
                         $( this ).toggleClass( 'toggled-on' );
+                        if ( $( this, secondary ).hasClass( 'toggled-on' ) ) {
+                                $( this ).attr( 'aria-expanded', 'true' );
+                                secondary.attr( 'aria-expanded', 'true' );
+                        } else {
+                                $( this ).attr( 'aria-expanded', 'false' );
+                                secondary.attr( 'aria-expanded', 'false' );
+                        }
                 } );
         } )();