Ticket #25821: 25821.3.patch

src/wp-admin/js/widgets.js

@@ -178 +178 @@
                         }
                 });
 
+                // Open the sidebar (the sortable container) when dragging a widget over its title
+                $('#widgets-right .widgets-holder-wrap .sidebar-name').droppable({
+                        accept: '.widget',
+                        tolerance: 'touch',
+                        over: function() {
+                                var $this = $(this), parent = $this.parent();
+
+                                if ( parent.hasClass('closed') ) {
+                                        parent.removeClass('closed');
+                                        $this.siblings('.widgets-sortables').sortable('refresh');
+                                }
+                        },
+                        drop: function() {
+                                return false;
+                        }
+                });
+
                 // Area Chooser
                 $( '#widgets-right .widgets-holder-wrap' ).each( function( index, element ) {
                         var $element = $( element ),