Ticket #13703: 13703.2.diff

wp-admin/js/nav-menu.dev.js

@@ -806 +806 @@
                 },
 
                 eventOnClickMenuSave : function(clickedEl) {
-                        var locs = '';
+                        var locs = '',
+                        menuName = $('#menu-name'),
+                        menuNameVal = menuName.val(),
+                        menuNameError;
+                        // Cancel and warn if invalid menu name
+                        if( !menuNameVal || menuNameVal == menuName.attr('title') || !menuNameVal.replace(/\s+/, '') ) {
+                                menuName.parent().addClass('form-invalid');
+                                return false;
+                        }
                         // Copy menu theme locations
                         $('#nav-menu-theme-locations select').each(function() {
                                 locs += '<input type="hidden" name="' + this.name + '" value="' + $(this).val() + '" />';

wp-admin/css/nav-menu.dev.css

@@ -337 +337 @@
         margin-right:13em;
 }
 
+.form-invalid {
+        border-radius: 4px;
+        -webkit-border-radius: 4px;
+        -moz-border-radius: 4px;
+        -khtml-border-radius: 4px;
+}
+
 /* Sortables */
 li.menu-item.ui-sortable-helper dl {
         margin-top: 0;