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   1  /**
   2   * @output wp-admin/js/nav-menu.js
   3   */
   4  
   5  /* global menus, postboxes, columns, isRtl, ajaxurl, wpNavMenu */
   6  
   7  /**
   8   * Handles the WordPress Administration Navigation Menu Interface functionality.
   9   *
  10   * @version 2.0.0
  11   * @package WordPress
  12   *
  13   * @param {JQueryStatic} $ The jQuery object.
  14   */
  15  (function($) {
  16  
  17      var api;
  18  
  19      /**
  20       * Contains all the functions to handle WordPress navigation menus administration.
  21       *
  22       * @namespace wpNavMenu
  23       */
  24      api = window.wpNavMenu = {
  25  
  26          options : {
  27              menuItemDepthPerLevel : 30, // Do not use directly. Use depthToPx and pxToDepth instead.
  28              globalMaxDepth:  11,
  29              sortableItems:   '> *',
  30              targetTolerance: 0
  31          },
  32  
  33          menuList : undefined,    // Set in init.
  34          targetList : undefined, // Set in init.
  35          menusChanged : false,
  36          isRTL: !! ( 'undefined' != typeof isRtl && isRtl ),
  37          negateIfRTL: ( 'undefined' != typeof isRtl && isRtl ) ? -1 : 1,
  38          lastSearch: '',
  39  
  40          // Functions that run on init.
  41          init : function() {
  42              api.menuList = $('#menu-to-edit');
  43              api.targetList = api.menuList;
  44  
  45              this.jQueryExtensions();
  46  
  47              this.attachMenuEditListeners();
  48  
  49              this.attachBulkSelectButtonListeners();
  50              this.attachMenuCheckBoxListeners();
  51              this.attachMenuItemDeleteButton();
  52              this.attachPendingMenuItemsListForDeletion();
  53  
  54              this.attachQuickSearchListeners();
  55              this.attachThemeLocationsListeners();
  56              this.attachMenuSaveSubmitListeners();
  57  
  58              this.attachTabsPanelListeners();
  59  
  60              this.attachUnsavedChangesListener();
  61  
  62              if ( api.menuList.length )
  63                  this.initSortables();
  64  
  65              if ( menus.oneThemeLocationNoMenus )
  66                  $( '#posttype-page' ).addSelectedToMenu( api.addMenuItemToBottom );
  67  
  68              this.initManageLocations();
  69  
  70              this.initAccessibility();
  71  
  72              this.initToggles();
  73  
  74              this.initPreviewing();
  75          },
  76  
  77          jQueryExtensions : function() {
  78              // jQuery extensions.
  79              $.fn.extend({
  80                  menuItemDepth : function() {
  81                      var margin = api.isRTL ? this.eq(0).css('margin-right') : this.eq(0).css('margin-left');
  82                      return api.pxToDepth( margin && -1 != margin.indexOf('px') ? margin.slice(0, -2) : 0 );
  83                  },
  84                  updateDepthClass : function(current, prev) {
  85                      return this.each(function(){
  86                          var t = $(this);
  87                          prev = prev || t.menuItemDepth();
  88                          $(this).removeClass('menu-item-depth-'+ prev )
  89                              .addClass('menu-item-depth-'+ current );
  90                      });
  91                  },
  92                  shiftDepthClass : function(change) {
  93                      return this.each(function(){
  94                          var t = $(this),
  95                              depth = t.menuItemDepth(),
  96                              newDepth = depth + change;
  97  
  98                          t.removeClass( 'menu-item-depth-'+ depth )
  99                              .addClass( 'menu-item-depth-'+ ( newDepth ) );
 100  
 101                          if ( 0 === newDepth ) {
 102                              t.find( '.is-submenu' ).hide();
 103                          }
 104                      });
 105                  },
 106                  childMenuItems : function() {
 107                      var result = $();
 108                      this.each(function(){
 109                          var t = $(this), depth = t.menuItemDepth(), next = t.next( '.menu-item' );
 110                          while( next.length && next.menuItemDepth() > depth ) {
 111                              result = result.add( next );
 112                              next = next.next( '.menu-item' );
 113                          }
 114                      });
 115                      return result;
 116                  },
 117                  shiftHorizontally : function( dir ) {
 118                      return this.each(function(){
 119                          var t = $(this),
 120                              depth = t.menuItemDepth(),
 121                              newDepth = depth + dir;
 122  
 123                          // Change .menu-item-depth-n class.
 124                          t.moveHorizontally( newDepth, depth );
 125                      });
 126                  },
 127                  moveHorizontally : function( newDepth, depth ) {
 128                      return this.each(function(){
 129                          var t = $(this),
 130                              children = t.childMenuItems(),
 131                              diff = newDepth - depth,
 132                              subItemText = t.find('.is-submenu');
 133  
 134                          // Change .menu-item-depth-n class.
 135                          t.updateDepthClass( newDepth, depth ).updateParentMenuItemDBId();
 136  
 137                          // If it has children, move those too.
 138                          if ( children ) {
 139                              children.each(function() {
 140                                  var t = $(this),
 141                                      thisDepth = t.menuItemDepth(),
 142                                      newDepth = thisDepth + diff;
 143                                  t.updateDepthClass(newDepth, thisDepth).updateParentMenuItemDBId();
 144                              });
 145                          }
 146  
 147                          // Show "Sub item" helper text.
 148                          if (0 === newDepth)
 149                              subItemText.hide();
 150                          else
 151                              subItemText.show();
 152                      });
 153                  },
 154                  updateParentMenuItemDBId : function() {
 155                      return this.each(function(){
 156                          var item = $(this),
 157                              input = item.find( '.menu-item-data-parent-id' ),
 158                              depth = parseInt( item.menuItemDepth(), 10 ),
 159                              parentDepth = depth - 1,
 160                              parent = item.prevAll( '.menu-item-depth-' + parentDepth ).first();
 161  
 162                          if ( 0 === depth ) { // Item is on the top level, has no parent.
 163                              input.val(0);
 164                          } else { // Find the parent item, and retrieve its object id.
 165                              input.val( parent.find( '.menu-item-data-db-id' ).val() );
 166                          }
 167                      });
 168                  },
 169                  hideAdvancedMenuItemFields : function() {
 170                      return this.each(function(){
 171                          var that = $(this);
 172                          $('.hide-column-tog').not(':checked').each(function(){
 173                              that.find('.field-' + $(this).val() ).addClass('hidden-field');
 174                          });
 175                      });
 176                  },
 177                  /**
 178                   * Adds selected menu items to the menu.
 179                   *
 180                   * @ignore
 181                   *
 182                   * @param {Function} processMethod The method to use for adding the menu items. Defaults to api.addMenuItemToBottom.
 183                   */
 184                  addSelectedToMenu : function(processMethod) {
 185                      if ( 0 === $('#menu-to-edit').length ) {
 186                          return false;
 187                      }
 188  
 189                      return this.each(function() {
 190                          var t = $(this), menuItems = {},
 191                              checkboxes = ( menus.oneThemeLocationNoMenus && 0 === t.find( '.tabs-panel-active .categorychecklist li input:checked' ).length ) ? t.find( '#page-all li input[type="checkbox"]' ) : t.find( '.tabs-panel-active .categorychecklist li input:checked' ),
 192                              re = /menu-item\[([^\]]*)/;
 193  
 194                          processMethod = processMethod || api.addMenuItemToBottom;
 195  
 196                          // If no items are checked, bail.
 197                          if ( !checkboxes.length )
 198                              return false;
 199  
 200                          // Show the Ajax spinner.
 201                          t.find( '.button-controls .spinner' ).addClass( 'is-active' );
 202  
 203                          // Retrieve menu item data.
 204                          $(checkboxes).each(function(){
 205                              var t = $(this),
 206                                  listItemDBIDMatch = re.exec( t.attr('name') ),
 207                                  listItemDBID = 'undefined' == typeof listItemDBIDMatch[1] ? 0 : parseInt(listItemDBIDMatch[1], 10);
 208  
 209                              if ( this.className && -1 != this.className.indexOf('add-to-top') )
 210                                  processMethod = api.addMenuItemToTop;
 211                              menuItems[listItemDBID] = t.closest('li').getItemData( 'add-menu-item', listItemDBID );
 212                          });
 213  
 214                          // Add the items.
 215                          api.addItemToMenu(menuItems, processMethod, function(){
 216                              // Deselect the items and hide the Ajax spinner.
 217                              checkboxes.prop( 'checked', false );
 218                              t.find( '.button-controls .select-all' ).prop( 'checked', false );
 219                              t.find( '.button-controls .spinner' ).removeClass( 'is-active' );
 220                              t.updateParentDropdown();
 221                              t.updateOrderDropdown();
 222                          });
 223                      });
 224                  },
 225                  getItemData : function( itemType, id ) {
 226                      itemType = itemType || 'menu-item';
 227  
 228                      var itemData = {}, i,
 229                      fields = [
 230                          'menu-item-db-id',
 231                          'menu-item-object-id',
 232                          'menu-item-object',
 233                          'menu-item-parent-id',
 234                          'menu-item-position',
 235                          'menu-item-type',
 236                          'menu-item-title',
 237                          'menu-item-url',
 238                          'menu-item-description',
 239                          'menu-item-attr-title',
 240                          'menu-item-target',
 241                          'menu-item-classes',
 242                          'menu-item-xfn'
 243                      ];
 244  
 245                      if( !id && itemType == 'menu-item' ) {
 246                          id = this.find('.menu-item-data-db-id').val();
 247                      }
 248  
 249                      if( !id ) return itemData;
 250  
 251                      this.find('input').each(function() {
 252                          var field;
 253                          i = fields.length;
 254                          while ( i-- ) {
 255                              if( itemType == 'menu-item' )
 256                                  field = fields[i] + '[' + id + ']';
 257                              else if( itemType == 'add-menu-item' )
 258                                  field = 'menu-item[' + id + '][' + fields[i] + ']';
 259  
 260                              if (
 261                                  this.name &&
 262                                  field == this.name
 263                              ) {
 264                                  itemData[fields[i]] = this.value;
 265                              }
 266                          }
 267                      });
 268  
 269                      return itemData;
 270                  },
 271                  setItemData : function( itemData, itemType, id ) { // Can take a type, such as 'menu-item', or an id.
 272                      itemType = itemType || 'menu-item';
 273  
 274                      if( !id && itemType == 'menu-item' ) {
 275                          id = $('.menu-item-data-db-id', this).val();
 276                      }
 277  
 278                      if( !id ) return this;
 279  
 280                      this.find('input').each(function() {
 281                          var t = $(this), field;
 282                          $.each( itemData, function( attr, val ) {
 283                              if( itemType == 'menu-item' )
 284                                  field = attr + '[' + id + ']';
 285                              else if( itemType == 'add-menu-item' )
 286                                  field = 'menu-item[' + id + '][' + attr + ']';
 287  
 288                              if ( field == t.attr('name') ) {
 289                                  t.val( val );
 290                              }
 291                          });
 292                      });
 293                      return this;
 294                  },
 295                  updateParentDropdown : function() {
 296                      return this.each(function(){
 297                          var menuItems = $( '#menu-to-edit li' ),
 298                              parentDropdowns = $( '.edit-menu-item-parent' );
 299  
 300                          $.each( parentDropdowns, function() {
 301                              var parentDropdown = $( this ),
 302                                  currentItemID = parseInt( parentDropdown.closest( 'li.menu-item' ).find( '.menu-item-data-db-id' ).val() ),
 303                                  currentParentID = parseInt( parentDropdown.closest( 'li.menu-item' ).find( '.menu-item-data-parent-id' ).val() ),
 304                                  currentItem = parentDropdown.closest( 'li.menu-item' ),
 305                                  currentMenuItemChild = currentItem.childMenuItems(),
 306                                  excludeMenuItem =  /** @type {number[]} */ [ currentItemID ];
 307  
 308                              parentDropdown.empty();
 309  
 310                              if ( currentMenuItemChild.length > 0 ) {
 311                                  $.each( currentMenuItemChild, function(){
 312                                      var childItem = $(this),
 313                                          childID = parseInt( childItem.find( '.menu-item-data-db-id' ).val() );
 314  
 315                                      excludeMenuItem.push( childID );
 316                                  });
 317                              }
 318  
 319                              parentDropdown.append(
 320                                  $( '<option>', {
 321                                      value: '0',
 322                                      selected: currentParentID === 0,
 323                                      text: wp.i18n._x( 'No Parent', 'menu item without a parent in navigation menu' ),
 324                                  } )
 325                              );
 326  
 327                              $.each( menuItems, function() {
 328                                  var menuItem = $(this),
 329                                  menuID = parseInt( menuItem.find( '.menu-item-data-db-id' ).val() ),
 330                                  menuTitle = menuItem.find( '.edit-menu-item-title' ).val();
 331  
 332                                  if ( ! excludeMenuItem.includes( menuID ) ) {
 333                                      parentDropdown.append(
 334                                          $( '<option>', {
 335                                              value: menuID.toString(),
 336                                              selected: currentParentID === menuID,
 337                                              text: menuTitle,
 338                                          } )
 339                                      );
 340                                  }
 341                              });
 342                          });
 343  
 344                      });
 345                  },
 346                  updateOrderDropdown : function() {
 347                      return this.each( function() {
 348                          var itemPosition,
 349                              orderDropdowns = $( '.edit-menu-item-order' );
 350  
 351                          $.each( orderDropdowns, function() {
 352                              var orderDropdown = $( this ),
 353                                  menuItem = orderDropdown.closest( 'li.menu-item' ).first(),
 354                                  depth = menuItem.menuItemDepth(),
 355                                  isPrimaryMenuItem = ( 0 === depth );
 356  
 357                              orderDropdown.empty();
 358  
 359                              if ( isPrimaryMenuItem ) {
 360                                  var primaryItems = $( '.menu-item-depth-0' ),
 361                                      totalMenuItems = primaryItems.length;
 362  
 363                                  itemPosition = primaryItems.index( menuItem ) + 1;
 364  
 365                                  for ( let i = 1; i < totalMenuItems + 1; i++ ) {
 366                                      var itemString = wp.i18n.sprintf(
 367                                          /* translators: 1: The current menu item number, 2: The total number of menu items. */
 368                                          wp.i18n._x( '%1$s of %2$s', 'part of a total number of menu items' ),
 369                                          i,
 370                                          totalMenuItems
 371                                      );
 372                                      orderDropdown.append(
 373                                          $( '<option>', {
 374                                              selected: i === itemPosition,
 375                                              value: i.toString(),
 376                                              text: itemString,
 377                                          } )
 378                                      );
 379                                  }
 380  
 381                              } else {
 382                                  var parentItem = menuItem.prevAll( '.menu-item-depth-' + parseInt( depth - 1, 10 ) ).first(),
 383                                      parentItemId = parentItem.find( '.menu-item-data-db-id' ).val(),
 384                                      subItems = $( '.menu-item .menu-item-data-parent-id[value="' + parentItemId + '"]' ),
 385                                      totalSubMenuItems = subItems.length;
 386  
 387                                  itemPosition = $( subItems.parents('.menu-item').get().reverse() ).index( menuItem ) + 1;
 388  
 389                                  for ( let i = 1; i < totalSubMenuItems + 1; i++ ) {
 390                                      var submenuString = wp.i18n.sprintf(
 391                                          /* translators: 1: The current submenu item number, 2: The total number of submenu items. */
 392                                          wp.i18n._x( '%1$s of %2$s', 'part of a total number of menu items' ),
 393                                          i,
 394                                          totalSubMenuItems
 395                                      );
 396                                      orderDropdown.append(
 397                                          $( '<option>', {
 398                                              selected: i === itemPosition,
 399                                              value: i.toString(),
 400                                              text: submenuString,
 401                                          } )
 402                                      );
 403                                  }
 404  
 405                              }
 406                          });
 407  
 408                      });
 409                  }
 410              });
 411          },
 412  
 413          countMenuItems : function( depth ) {
 414              return $( '.menu-item-depth-' + depth ).length;
 415          },
 416  
 417          moveMenuItem : function( $this, dir ) {
 418              var items, newItemPosition, newDepth,
 419                  menuItems = $( '#menu-to-edit li' ),
 420                  menuItemsCount = menuItems.length,
 421                  thisItem = $this.parents( 'li.menu-item' ),
 422                  thisItemChildren = thisItem.childMenuItems(),
 423                  thisItemData = thisItem.getItemData(),
 424                  thisItemDepth = parseInt( thisItem.menuItemDepth(), 10 ),
 425                  thisItemPosition = parseInt( thisItem.index(), 10 ),
 426                  nextItem = thisItem.next(),
 427                  nextItemChildren = nextItem.childMenuItems(),
 428                  nextItemDepth = parseInt( nextItem.menuItemDepth(), 10 ) + 1,
 429                  prevItem = thisItem.prev(),
 430                  prevItemDepth = parseInt( prevItem.menuItemDepth(), 10 ),
 431                  prevItemId = prevItem.getItemData()['menu-item-db-id'],
 432                  a11ySpeech = menus[ 'moved' + dir.charAt(0).toUpperCase() + dir.slice(1) ];
 433  
 434              switch ( dir ) {
 435              case 'up':
 436                  newItemPosition = thisItemPosition - 1;
 437  
 438                  // Already at top.
 439                  if ( 0 === thisItemPosition )
 440                      break;
 441  
 442                  // If a sub item is moved to top, shift it to 0 depth.
 443                  if ( 0 === newItemPosition && 0 !== thisItemDepth )
 444                      thisItem.moveHorizontally( 0, thisItemDepth );
 445  
 446                  // If prev item is sub item, shift to match depth.
 447                  if ( 0 !== prevItemDepth )
 448                      thisItem.moveHorizontally( prevItemDepth, thisItemDepth );
 449  
 450                  // Does this item have sub items?
 451                  if ( thisItemChildren ) {
 452                      items = thisItem.add( thisItemChildren );
 453                      // Move the entire block.
 454                      items.detach().insertBefore( menuItems.eq( newItemPosition ) ).updateParentMenuItemDBId();
 455                  } else {
 456                      thisItem.detach().insertBefore( menuItems.eq( newItemPosition ) ).updateParentMenuItemDBId();
 457                  }
 458                  break;
 459              case 'down':
 460                  // Does this item have sub items?
 461                  if ( thisItemChildren ) {
 462                      items = thisItem.add( thisItemChildren ),
 463                          nextItem = menuItems.eq( items.length + thisItemPosition ),
 464                          nextItemChildren = 0 !== nextItem.childMenuItems().length;
 465  
 466                      if ( nextItemChildren ) {
 467                          newDepth = parseInt( nextItem.menuItemDepth(), 10 ) + 1;
 468                          thisItem.moveHorizontally( newDepth, thisItemDepth );
 469                      }
 470  
 471                      // Have we reached the bottom?
 472                      if ( menuItemsCount === thisItemPosition + items.length )
 473                          break;
 474  
 475                      items.detach().insertAfter( menuItems.eq( thisItemPosition + items.length ) ).updateParentMenuItemDBId();
 476                  } else {
 477                      // If next item has sub items, shift depth.
 478                      if ( 0 !== nextItemChildren.length )
 479                          thisItem.moveHorizontally( nextItemDepth, thisItemDepth );
 480  
 481                      // Have we reached the bottom?
 482                      if ( menuItemsCount === thisItemPosition + 1 )
 483                          break;
 484                      thisItem.detach().insertAfter( menuItems.eq( thisItemPosition + 1 ) ).updateParentMenuItemDBId();
 485                  }
 486                  break;
 487              case 'top':
 488                  // Already at top.
 489                  if ( 0 === thisItemPosition )
 490                      break;
 491                  // Does this item have sub items?
 492                  if ( thisItemChildren ) {
 493                      items = thisItem.add( thisItemChildren );
 494                      // Move the entire block.
 495                      items.detach().insertBefore( menuItems.eq( 0 ) ).updateParentMenuItemDBId();
 496                  } else {
 497                      thisItem.detach().insertBefore( menuItems.eq( 0 ) ).updateParentMenuItemDBId();
 498                  }
 499                  break;
 500              case 'left':
 501                  // As far left as possible.
 502                  if ( 0 === thisItemDepth )
 503                      break;
 504                  thisItem.shiftHorizontally( -1 );
 505                  break;
 506              case 'right':
 507                  // Can't be sub item at top.
 508                  if ( 0 === thisItemPosition )
 509                      break;
 510                  // Already sub item of prevItem.
 511                  if ( thisItemData['menu-item-parent-id'] === prevItemId )
 512                      break;
 513                  thisItem.shiftHorizontally( 1 );
 514                  break;
 515              }
 516              $this.trigger( 'focus' );
 517              api.registerChange();
 518              api.refreshKeyboardAccessibility();
 519              api.refreshAdvancedAccessibility();
 520              thisItem.updateParentDropdown();
 521              thisItem.updateOrderDropdown();
 522  
 523              if ( a11ySpeech ) {
 524                  wp.a11y.speak( a11ySpeech );
 525              }
 526          },
 527  
 528          initAccessibility : function() {
 529              var menu = $( '#menu-to-edit' );
 530  
 531              api.refreshKeyboardAccessibility();
 532              api.refreshAdvancedAccessibility();
 533  
 534              // Refresh the accessibility when the user comes close to the item in any way.
 535              menu.on( 'mouseenter.refreshAccessibility focus.refreshAccessibility touchstart.refreshAccessibility' , '.menu-item' , function(){
 536                  api.refreshAdvancedAccessibilityOfItem( $( this ).find( 'a.item-edit' ) );
 537              } );
 538  
 539              // We have to update on click as well because we might hover first, change the item, and then click.
 540              menu.on( 'click', 'a.item-edit', function() {
 541                  api.refreshAdvancedAccessibilityOfItem( $( this ) );
 542              } );
 543  
 544              // Links for moving items.
 545              menu.on( 'click', '.menus-move', function () {
 546                  var $this = $( this ),
 547                      dir = $this.data( 'dir' );
 548  
 549                  if ( 'undefined' !== typeof dir ) {
 550                      api.moveMenuItem( $( this ).parents( 'li.menu-item' ).find( 'a.item-edit' ), dir );
 551                  }
 552              });
 553  
 554              // Set menu parents data for all menu items.
 555              menu.updateParentDropdown();
 556  
 557              // Set menu order data for all menu items.
 558              menu.updateOrderDropdown();
 559  
 560              // Update menu item parent when value is changed.
 561              menu.on( 'change', '.edit-menu-item-parent', function() {
 562                  api.changeMenuParent( $( this ) );
 563              });
 564  
 565              // Update menu item order when value is changed.
 566              menu.on( 'change', '.edit-menu-item-order', function() {
 567                  api.changeMenuOrder( $( this ) );
 568              });
 569          },
 570  
 571          /**
 572           * changeMenuParent( [parentDropdown] )
 573           *
 574           * @since 6.7.0
 575           *
 576           * @param {Object} parentDropdown select field
 577           */
 578          changeMenuParent : function( parentDropdown ) {
 579              var menuItemNewPosition,
 580                  menuItems = $( '#menu-to-edit li' ),
 581                  $this = $( parentDropdown ),
 582                  newParentID = $this.val(),
 583                  menuItem = $this.closest( 'li.menu-item' ).first(),
 584                  menuItemOldDepth = menuItem.menuItemDepth(),
 585                  menuItemChildren = menuItem.childMenuItems(),
 586                  menuItemNoChildren = parseInt( menuItem.childMenuItems().length, 10 ),
 587                  parentItem = $( '#menu-item-' + newParentID ),
 588                  parentItemDepth = parentItem.menuItemDepth(),
 589                  menuItemNewDepth = parseInt( parentItemDepth ) + 1;
 590  
 591              if ( newParentID == 0 ) {
 592                  menuItemNewDepth = 0;
 593              }
 594  
 595              menuItem.find( '.menu-item-data-parent-id' ).val( newParentID );
 596              menuItem.moveHorizontally( menuItemNewDepth, menuItemOldDepth );
 597  
 598              if ( menuItemNoChildren > 0 ) {
 599                  menuItem = menuItem.add( menuItemChildren );
 600              }
 601              menuItem.detach();
 602  
 603              menuItems = $( '#menu-to-edit li' );
 604  
 605              var    parentItemPosition = parseInt( parentItem.index(), 10 ),
 606                  parentItemNoChild = parseInt( parentItem.childMenuItems().length, 10 );
 607  
 608              if ( parentItemNoChild > 0 ){
 609                  menuItemNewPosition = parentItemPosition + parentItemNoChild;
 610              } else {
 611                  menuItemNewPosition = parentItemPosition;
 612              }
 613  
 614              if ( newParentID == 0 ) {
 615                  menuItemNewPosition = menuItems.length - 1;
 616              }
 617  
 618              menuItem.insertAfter( menuItems.eq( menuItemNewPosition ) ).updateParentMenuItemDBId().updateParentDropdown().updateOrderDropdown();
 619  
 620              api.registerChange();
 621              api.refreshKeyboardAccessibility();
 622              api.refreshAdvancedAccessibility();
 623              $this.trigger( 'focus' );
 624              wp.a11y.speak( menus.parentUpdated, 'polite' );
 625          },
 626  
 627          /**
 628           * changeMenuOrder( [OrderDropdown] )
 629           *
 630           * @since 6.7.0
 631           *
 632           * @param {Object} orderDropdown select field
 633           */
 634          changeMenuOrder : function( orderDropdown ) {
 635              var menuItems = $( '#menu-to-edit li' ),
 636                  $this = $( orderDropdown ),
 637                  newOrderID = parseInt( $this.val(), 10),
 638                  menuItem = $this.closest( 'li.menu-item' ).first(),
 639                  menuItemChildren = menuItem.childMenuItems(),
 640                  menuItemNoChildren = menuItemChildren.length,
 641                  menuItemCurrentPosition = parseInt( menuItem.index(), 10 ),
 642                  parentItemID = menuItem.find( '.menu-item-data-parent-id' ).val(),
 643                  subItems = $( '.menu-item .menu-item-data-parent-id[value="' + parentItemID + '"]' ),
 644                  currentItemAtPosition = $(subItems[newOrderID - 1]).closest( 'li.menu-item' );
 645  
 646              if ( menuItemNoChildren > 0 ) {
 647                  menuItem = menuItem.add( menuItemChildren );
 648              }
 649  
 650              var currentItemNoChildren = currentItemAtPosition.childMenuItems().length,
 651                  currentItemPosition = parseInt( currentItemAtPosition.index(), 10 );
 652  
 653              menuItems = $( '#menu-to-edit li' );
 654  
 655              var    menuItemNewPosition = currentItemPosition;
 656  
 657              if(menuItemCurrentPosition > menuItemNewPosition){
 658                  menuItemNewPosition = currentItemPosition;
 659                  menuItem.detach().insertBefore( menuItems.eq( menuItemNewPosition ) ).updateOrderDropdown();
 660              } else {
 661                  menuItemNewPosition = menuItemNewPosition + currentItemNoChildren;
 662                  menuItem.detach().insertAfter( menuItems.eq( menuItemNewPosition ) ).updateOrderDropdown();
 663              }
 664  
 665              api.registerChange();
 666              api.refreshKeyboardAccessibility();
 667              api.refreshAdvancedAccessibility();
 668              $this.trigger( 'focus' );
 669              wp.a11y.speak( menus.orderUpdated, 'polite' );
 670          },
 671  
 672          /**
 673           * refreshAdvancedAccessibilityOfItem( [itemToRefresh] )
 674           *
 675           * Refreshes advanced accessibility buttons for one menu item.
 676           * Shows or hides buttons based on the location of the menu item.
 677           *
 678           * @param {Object} itemToRefresh The menu item that might need its advanced accessibility buttons refreshed
 679           */
 680          refreshAdvancedAccessibilityOfItem : function( itemToRefresh ) {
 681  
 682              // Only refresh accessibility when necessary.
 683              if ( true !== $( itemToRefresh ).data( 'needs_accessibility_refresh' ) ) {
 684                  return;
 685              }
 686  
 687              var thisLink, thisLinkText, primaryItems, itemPosition, title,
 688                  parentItem, parentItemId, parentItemName, subItems, totalSubItems,
 689                  $this = $( itemToRefresh ),
 690                  menuItem = $this.closest( 'li.menu-item' ).first(),
 691                  depth = menuItem.menuItemDepth(),
 692                  isPrimaryMenuItem = ( 0 === depth ),
 693                  itemName = $this.closest( '.menu-item-handle' ).find( '.menu-item-title' ).text(),
 694                  menuItemType = $this.closest( '.menu-item-handle' ).find( '.item-controls' ).find( '.item-type' ).text(),
 695                  position = parseInt( menuItem.index(), 10 ),
 696                  prevItemDepth = ( isPrimaryMenuItem ) ? depth : parseInt( depth - 1, 10 ),
 697                  prevItemNameLeft = menuItem.prevAll('.menu-item-depth-' + prevItemDepth).first().find( '.menu-item-title' ).text(),
 698                  prevItemNameRight = menuItem.prevAll('.menu-item-depth-' + depth).first().find( '.menu-item-title' ).text(),
 699                  totalMenuItems = $('#menu-to-edit li').length,
 700                  hasSameDepthSibling = menuItem.nextAll( '.menu-item-depth-' + depth ).length;
 701  
 702                  menuItem.find( '.field-move' ).toggle( totalMenuItems > 1 );
 703  
 704              // Where can they move this menu item?
 705              if ( 0 !== position ) {
 706                  thisLink = menuItem.find( '.menus-move-up' );
 707                  thisLink.attr( 'aria-label', menus.moveUp ).css( 'display', 'inline' );
 708              }
 709  
 710              if ( 0 !== position && isPrimaryMenuItem ) {
 711                  thisLink = menuItem.find( '.menus-move-top' );
 712                  thisLink.attr( 'aria-label', menus.moveToTop ).css( 'display', 'inline' );
 713              }
 714  
 715              if ( position + 1 !== totalMenuItems && 0 !== position ) {
 716                  thisLink = menuItem.find( '.menus-move-down' );
 717                  thisLink.attr( 'aria-label', menus.moveDown ).css( 'display', 'inline' );
 718              }
 719  
 720              if ( 0 === position && 0 !== hasSameDepthSibling ) {
 721                  thisLink = menuItem.find( '.menus-move-down' );
 722                  thisLink.attr( 'aria-label', menus.moveDown ).css( 'display', 'inline' );
 723              }
 724  
 725              if ( ! isPrimaryMenuItem ) {
 726                  thisLink = menuItem.find( '.menus-move-left' ),
 727                  thisLinkText = menus.outFrom.replace( '%s', prevItemNameLeft );
 728                  thisLink.attr( 'aria-label', menus.moveOutFrom.replace( '%s', prevItemNameLeft ) ).text( thisLinkText ).css( 'display', 'inline' );
 729              }
 730  
 731              if ( 0 !== position ) {
 732                  if ( menuItem.find( '.menu-item-data-parent-id' ).val() !== menuItem.prev().find( '.menu-item-data-db-id' ).val() ) {
 733                      thisLink = menuItem.find( '.menus-move-right' ),
 734                      thisLinkText = menus.under.replace( '%s', prevItemNameRight );
 735                      thisLink.attr( 'aria-label', menus.moveUnder.replace( '%s', prevItemNameRight ) ).text( thisLinkText ).css( 'display', 'inline' );
 736                  }
 737              }
 738  
 739              if ( isPrimaryMenuItem ) {
 740                  primaryItems = $( '.menu-item-depth-0' ),
 741                  itemPosition = primaryItems.index( menuItem ) + 1,
 742                  totalMenuItems = primaryItems.length,
 743                  // String together help text for primary menu items.
 744                  title = menus.menuFocus.replace( '%1$s', itemName ).replace( '%2$s', menuItemType ).replace( '%3$d', itemPosition ).replace( '%4$d', totalMenuItems );
 745              } else {
 746                  parentItem = menuItem.prevAll( '.menu-item-depth-' + parseInt( depth - 1, 10 ) ).first(),
 747                  parentItemId = parentItem.find( '.menu-item-data-db-id' ).val(),
 748                  parentItemName = parentItem.find( '.menu-item-title' ).text(),
 749                  subItems = $( '.menu-item .menu-item-data-parent-id[value="' + parentItemId + '"]' ),
 750                  totalSubItems = subItems.length,
 751                  itemPosition = $( subItems.parents('.menu-item').get().reverse() ).index( menuItem ) + 1;
 752  
 753                  // String together help text for sub menu items.
 754                  if ( depth < 2 ) {
 755                      title = menus.subMenuFocus.replace( '%1$s', itemName ).replace( '%2$s', menuItemType ).replace( '%3$d', itemPosition ).replace( '%4$d', totalSubItems ).replace( '%5$s', parentItemName );
 756                  } else {
 757                      title = menus.subMenuMoreDepthFocus.replace( '%1$s', itemName ).replace( '%2$s', menuItemType ).replace( '%3$d', itemPosition ).replace( '%4$d', totalSubItems ).replace( '%5$s', parentItemName ).replace( '%6$d', depth );
 758                  }
 759              }
 760  
 761              $this.attr( 'aria-label', title );
 762  
 763              // Mark this item's accessibility as refreshed.
 764              $this.data( 'needs_accessibility_refresh', false );
 765          },
 766  
 767          /**
 768           * refreshAdvancedAccessibility
 769           *
 770           * Hides all advanced accessibility buttons and marks them for refreshing.
 771           */
 772          refreshAdvancedAccessibility : function() {
 773  
 774              // Hide all the move buttons by default.
 775              $( '.menu-item-settings .field-move .menus-move' ).hide();
 776  
 777              // Mark all menu items as unprocessed.
 778              $( 'a.item-edit' ).data( 'needs_accessibility_refresh', true );
 779  
 780              // All open items have to be refreshed or they will show no links.
 781              $( '.menu-item-edit-active a.item-edit' ).each( function() {
 782                  api.refreshAdvancedAccessibilityOfItem( this );
 783              } );
 784          },
 785  
 786          refreshKeyboardAccessibility : function() {
 787              $( 'a.item-edit' ).off( 'focus' ).on( 'focus', function(){
 788                  $(this).off( 'keydown' ).on( 'keydown', function(e){
 789  
 790                      var arrows,
 791                          $this = $( this ),
 792                          thisItem = $this.parents( 'li.menu-item' ),
 793                          thisItemData = thisItem.getItemData();
 794  
 795                      // Bail if it's not an arrow key.
 796                      if ( 37 != e.which && 38 != e.which && 39 != e.which && 40 != e.which )
 797                          return;
 798  
 799                      // Avoid multiple keydown events.
 800                      $this.off('keydown');
 801  
 802                      // Bail if there is only one menu item.
 803                      if ( 1 === $('#menu-to-edit li').length )
 804                          return;
 805  
 806                      // If RTL, swap left/right arrows.
 807                      arrows = { '38': 'up', '40': 'down', '37': 'left', '39': 'right' };
 808                      if ( $('body').hasClass('rtl') )
 809                          arrows = { '38' : 'up', '40' : 'down', '39' : 'left', '37' : 'right' };
 810  
 811                      switch ( arrows[e.which] ) {
 812                      case 'up':
 813                          api.moveMenuItem( $this, 'up' );
 814                          break;
 815                      case 'down':
 816                          api.moveMenuItem( $this, 'down' );
 817                          break;
 818                      case 'left':
 819                          api.moveMenuItem( $this, 'left' );
 820                          break;
 821                      case 'right':
 822                          api.moveMenuItem( $this, 'right' );
 823                          break;
 824                      }
 825                      // Put focus back on same menu item.
 826                      $( '#edit-' + thisItemData['menu-item-db-id'] ).trigger( 'focus' );
 827                      return false;
 828                  });
 829              });
 830          },
 831  
 832          initPreviewing : function() {
 833              // Update the item handle title when the navigation label is changed.
 834              $( '#menu-to-edit' ).on( 'change input', '.edit-menu-item-title', function(e) {
 835                  var input = $( e.currentTarget ), title, titleEl;
 836                  title = input.val();
 837                  titleEl = input.closest( '.menu-item' ).find( '.menu-item-title' );
 838                  // Don't update to empty title.
 839                  if ( title ) {
 840                      titleEl.text( title ).removeClass( 'no-title' );
 841                  } else {
 842                      titleEl.text( wp.i18n._x( '(no label)', 'missing menu item navigation label' ) ).addClass( 'no-title' );
 843                  }
 844              } );
 845          },
 846  
 847          initToggles : function() {
 848              // Init postboxes.
 849              postboxes.add_postbox_toggles('nav-menus');
 850  
 851              // Adjust columns functions for menus UI.
 852              columns.useCheckboxesForHidden();
 853              columns.checked = function(field) {
 854                  $('.field-' + field).removeClass('hidden-field');
 855              };
 856              columns.unchecked = function(field) {
 857                  $('.field-' + field).addClass('hidden-field');
 858              };
 859              // Hide fields.
 860              api.menuList.hideAdvancedMenuItemFields();
 861  
 862              $('.hide-postbox-tog').on( 'click', function () {
 863                  var hidden = $( '.accordion-container li.accordion-section' ).filter(':hidden').map(function() { return this.id; }).get().join(',');
 864                  $.post(ajaxurl, {
 865                      action: 'closed-postboxes',
 866                      hidden: hidden,
 867                      closedpostboxesnonce: jQuery('#closedpostboxesnonce').val(),
 868                      page: 'nav-menus'
 869                  });
 870              });
 871          },
 872  
 873          initSortables : function() {
 874              var currentDepth = 0, originalDepth, minDepth, maxDepth,
 875                  prev, next, prevBottom, nextThreshold, helperHeight, transport,
 876                  menuEdge = api.menuList.offset().left,
 877                  body = $('body'), maxChildDepth,
 878                  menuMaxDepth = initialMenuMaxDepth();
 879  
 880              if( 0 !== $( '#menu-to-edit li' ).length )
 881                  $( '.drag-instructions' ).show();
 882  
 883              // Use the right edge if RTL.
 884              menuEdge += api.isRTL ? api.menuList.width() : 0;
 885  
 886              api.menuList.sortable({
 887                  handle: '.menu-item-handle',
 888                  placeholder: 'sortable-placeholder',
 889                  items: api.options.sortableItems,
 890                  start: function(e, ui) {
 891                      var height, width, parent, children, tempHolder;
 892  
 893                      // Handle placement for RTL orientation.
 894                      if ( api.isRTL )
 895                          ui.item[0].style.right = 'auto';
 896  
 897                      transport = ui.item.children('.menu-item-transport');
 898  
 899                      // Set depths. currentDepth must be set before children are located.
 900                      originalDepth = ui.item.menuItemDepth();
 901                      updateCurrentDepth(ui, originalDepth);
 902  
 903                      // Attach child elements to parent.
 904                      // Skip the placeholder.
 905                      parent = ( ui.item.next()[0] == ui.placeholder[0] ) ? ui.item.next() : ui.item;
 906                      children = parent.childMenuItems();
 907                      transport.append( children );
 908  
 909                      // Update the height of the placeholder to match the moving item.
 910                      height = transport.outerHeight();
 911                      // If there are children, account for distance between top of children and parent.
 912                      height += ( height > 0 ) ? (ui.placeholder.css('margin-top').slice(0, -2) * 1) : 0;
 913                      height += ui.helper.outerHeight();
 914                      helperHeight = height;
 915                      height -= 2;                                              // Subtract 2 for borders.
 916                      ui.placeholder.height(height);
 917  
 918                      // Update the width of the placeholder to match the moving item.
 919                      maxChildDepth = originalDepth;
 920                      children.each(function(){
 921                          var depth = $(this).menuItemDepth();
 922                          maxChildDepth = (depth > maxChildDepth) ? depth : maxChildDepth;
 923                      });
 924                      width = ui.helper.find('.menu-item-handle').outerWidth(); // Get original width.
 925                      width += api.depthToPx(maxChildDepth - originalDepth);    // Account for children.
 926                      width -= 2;                                               // Subtract 2 for borders.
 927                      ui.placeholder.width(width);
 928  
 929                      // Update the list of menu items.
 930                      tempHolder = ui.placeholder.next( '.menu-item' );
 931                      tempHolder.css( 'margin-top', helperHeight + 'px' ); // Set the margin to absorb the placeholder.
 932                      ui.placeholder.detach();         // Detach or jQuery UI will think the placeholder is a menu item.
 933                      $(this).sortable( 'refresh' );   // The children aren't sortable. We should let jQuery UI know.
 934                      ui.item.after( ui.placeholder ); // Reattach the placeholder.
 935                      tempHolder.css('margin-top', 0); // Reset the margin.
 936  
 937                      // Now that the element is complete, we can update...
 938                      updateSharedVars(ui);
 939                  },
 940                  stop: function(e, ui) {
 941                      var children, subMenuTitle,
 942                          depthChange = currentDepth - originalDepth;
 943  
 944                      // Return child elements to the list.
 945                      children = transport.children().insertAfter(ui.item);
 946  
 947                      // Add "sub menu" description.
 948                      subMenuTitle = ui.item.find( '.item-title .is-submenu' );
 949                      if ( 0 < currentDepth )
 950                          subMenuTitle.show();
 951                      else
 952                          subMenuTitle.hide();
 953  
 954                      // Update depth classes.
 955                      if ( 0 !== depthChange ) {
 956                          ui.item.updateDepthClass( currentDepth );
 957                          children.shiftDepthClass( depthChange );
 958                          updateMenuMaxDepth( depthChange );
 959                      }
 960                      // Register a change.
 961                      api.registerChange();
 962                      // Update the item data.
 963                      ui.item.updateParentMenuItemDBId();
 964  
 965                      // Address sortable's incorrectly-calculated top in Opera.
 966                      ui.item[0].style.top = 0;
 967  
 968                      // Handle drop placement for rtl orientation.
 969                      if ( api.isRTL ) {
 970                          ui.item[0].style.left = 'auto';
 971                          ui.item[0].style.right = 0;
 972                      }
 973  
 974                      api.refreshKeyboardAccessibility();
 975                      api.refreshAdvancedAccessibility();
 976                      ui.item.updateParentDropdown();
 977                      ui.item.updateOrderDropdown();
 978                      api.refreshAdvancedAccessibilityOfItem( ui.item.find( 'a.item-edit' ) );
 979                  },
 980                  change: function(e, ui) {
 981                      // Make sure the placeholder is inside the menu.
 982                      // Otherwise fix it, or we're in trouble.
 983                      if( ! ui.placeholder.parent().hasClass('menu') )
 984                          (prev.length) ? prev.after( ui.placeholder ) : api.menuList.prepend( ui.placeholder );
 985  
 986                      updateSharedVars(ui);
 987                  },
 988                  sort: function(e, ui) {
 989                      var offset = ui.helper.offset(),
 990                          edge = api.isRTL ? offset.left + ui.helper.width() : offset.left,
 991                          depth = api.negateIfRTL * api.pxToDepth( edge - menuEdge );
 992  
 993                      /*
 994                       * Check and correct if depth is not within range.
 995                       * Also, if the dragged element is dragged upwards over an item,
 996                       * shift the placeholder to a child position.
 997                       */
 998                      if ( depth > maxDepth || offset.top < ( prevBottom - api.options.targetTolerance ) ) {
 999                          depth = maxDepth;
1000                      } else if ( depth < minDepth ) {
1001                          depth = minDepth;
1002                      }
1003  
1004                      if( depth != currentDepth )
1005                          updateCurrentDepth(ui, depth);
1006  
1007                      // If we overlap the next element, manually shift downwards.
1008                      if( nextThreshold && offset.top + helperHeight > nextThreshold ) {
1009                          next.after( ui.placeholder );
1010                          updateSharedVars( ui );
1011                          $( this ).sortable( 'refreshPositions' );
1012                      }
1013                  }
1014              });
1015  
1016              /**
1017               * Updates the shared variables used to determine the depth of the menu item being moved.
1018               *
1019               * @param {Object} ui The jQuery UI object for the menu item being moved.
1020               */
1021  			function updateSharedVars(ui) {
1022                  var depth;
1023  
1024                  prev = ui.placeholder.prev( '.menu-item' );
1025                  next = ui.placeholder.next( '.menu-item' );
1026  
1027                  // Make sure we don't select the moving item.
1028                  if( prev[0] == ui.item[0] ) prev = prev.prev( '.menu-item' );
1029                  if( next[0] == ui.item[0] ) next = next.next( '.menu-item' );
1030  
1031                  prevBottom = (prev.length) ? prev.offset().top + prev.height() : 0;
1032                  nextThreshold = (next.length) ? next.offset().top + next.height() / 3 : 0;
1033                  minDepth = (next.length) ? next.menuItemDepth() : 0;
1034  
1035                  if( prev.length )
1036                      maxDepth = ( (depth = prev.menuItemDepth() + 1) > api.options.globalMaxDepth ) ? api.options.globalMaxDepth : depth;
1037                  else
1038                      maxDepth = 0;
1039              }
1040  
1041              /**
1042               * Updates the current depth of the menu item being moved.
1043               *
1044               * @param {Object} ui    The jQuery UI object for the menu item being moved.
1045               * @param {number} depth The new depth of the menu item being moved.
1046               * @return {void}
1047               */
1048  			function updateCurrentDepth(ui, depth) {
1049                  ui.placeholder.updateDepthClass( depth, currentDepth );
1050                  currentDepth = depth;
1051              }
1052  
1053              /**
1054               * Determines the initial menu max depth class on the body element.
1055               *
1056               * @return {number} The initial menu max depth.
1057               */
1058  			function initialMenuMaxDepth() {
1059                  if( ! body[0].className ) return 0;
1060                  var match = body[0].className.match(/menu-max-depth-(\d+)/);
1061                  return match && match[1] ? parseInt( match[1], 10 ) : 0;
1062              }
1063  
1064              /**
1065               * Updates the menu max depth class on the body element.
1066               *
1067               * @param {number} depthChange The change in depth of the menu item being moved.
1068               * @return {void}
1069               */
1070  			function updateMenuMaxDepth( depthChange ) {
1071                  var depth, newDepth = menuMaxDepth;
1072                  if ( depthChange === 0 ) {
1073                      return;
1074                  } else if ( depthChange > 0 ) {
1075                      depth = maxChildDepth + depthChange;
1076                      if( depth > menuMaxDepth )
1077                          newDepth = depth;
1078                  } else if ( depthChange < 0 && maxChildDepth == menuMaxDepth ) {
1079                      while( ! $('.menu-item-depth-' + newDepth, api.menuList).length && newDepth > 0 )
1080                          newDepth--;
1081                  }
1082                  // Update the depth class.
1083                  body.removeClass( 'menu-max-depth-' + menuMaxDepth ).addClass( 'menu-max-depth-' + newDepth );
1084                  menuMaxDepth = newDepth;
1085              }
1086          },
1087  
1088          initManageLocations : function () {
1089              $('#menu-locations-wrap form').on( 'submit', function(){
1090                  window.onbeforeunload = null;
1091              });
1092              $('.menu-location-menus select').on('change', function () {
1093                  var editLink = $(this).closest('tr').find('.locations-edit-menu-link');
1094                  if ($(this).find('option:selected').data('orig'))
1095                      editLink.show();
1096                  else
1097                      editLink.hide();
1098              });
1099          },
1100  
1101          attachMenuEditListeners : function() {
1102              var that = this;
1103              $('#update-nav-menu').on('click', function(e) {
1104                  if ( e.target && e.target.className ) {
1105                      if ( -1 != e.target.className.indexOf('item-edit') ) {
1106                          return that.eventOnClickEditLink(e.target);
1107                      } else if ( -1 != e.target.className.indexOf('menu-save') ) {
1108                          return that.eventOnClickMenuSave(e.target);
1109                      } else if ( -1 != e.target.className.indexOf('menu-delete') ) {
1110                          return that.eventOnClickMenuDelete(e.target);
1111                      } else if ( -1 != e.target.className.indexOf('item-delete') ) {
1112                          return that.eventOnClickMenuItemDelete(e.target);
1113                      } else if ( -1 != e.target.className.indexOf('item-cancel') ) {
1114                          return that.eventOnClickCancelLink(e.target);
1115                      }
1116                  }
1117              });
1118  
1119              $( '#menu-name' ).on( 'input', _.debounce( function () {
1120                  var menuName = $( document.getElementById( 'menu-name' ) ),
1121                      menuNameVal = menuName.val();
1122  
1123                  if ( ! menuNameVal || ! menuNameVal.replace( /\s+/, '' ) ) {
1124                      // Add warning for invalid menu name.
1125                      menuName.parent().addClass( 'form-invalid' );
1126                  } else {
1127                      // Remove warning for valid menu name.
1128                      menuName.parent().removeClass( 'form-invalid' );
1129                  }
1130              }, 500 ) );
1131  
1132              $('#add-custom-links input[type="text"]').on( 'keypress', function(e){
1133                  $( '#customlinkdiv' ).removeClass( 'form-invalid' );
1134                  $( '#custom-menu-item-url' ).removeAttr( 'aria-invalid' ).removeAttr( 'aria-describedby' );
1135                  $( '#custom-url-error' ).hide();
1136  
1137                  if ( e.keyCode === 13 ) {
1138                      e.preventDefault();
1139                      $( '#submit-customlinkdiv' ).trigger( 'click' );
1140                  }
1141              });
1142  
1143              $( '#submit-customlinkdiv' ).on( 'click', function (e) {
1144                  var urlInput = $( '#custom-menu-item-url' ),
1145                      url = urlInput.val().trim(),
1146                      errorMessage = $( '#custom-url-error' ),
1147                      urlWrap = $( '#menu-item-url-wrap' ),
1148                      urlRegex;
1149  
1150                  // Hide the error message initially
1151                  errorMessage.hide();
1152                  urlWrap.removeClass( 'has-error' );
1153  
1154                  /*
1155                   * Allow URLs including:
1156                   * - http://example.com/
1157                   * - //example.com
1158                   * - /directory/
1159                   * - ?query-param
1160                   * - #target
1161                   * - mailto:foo@example.com
1162                   *
1163                   * Any further validation will be handled on the server when the setting is attempted to be saved,
1164                   * so this pattern does not need to be complete.
1165                   */
1166                  urlRegex = /^((\w+:)?\/\/\w.*|\w+:(?!\/\/$)|\/|\?|#)/;
1167                  if ( ! urlRegex.test( url ) ) {
1168                      e.preventDefault();
1169                      urlInput.addClass( 'form-invalid' )
1170                          .attr( 'aria-invalid', 'true' )
1171                          .attr( 'aria-describedby', 'custom-url-error' );
1172  
1173                      errorMessage.show();
1174                      var errorText = errorMessage.text();
1175                      urlWrap.addClass( 'has-error' );
1176                      // Announce error message via screen reader
1177                      wp.a11y.speak( errorText, 'assertive' );
1178                  }
1179              });
1180          },
1181  
1182          /**
1183           * Handle toggling bulk selection checkboxes for menu items.
1184           *
1185           * @since 5.8.0
1186           */
1187          attachBulkSelectButtonListeners : function() {
1188              var that = this;
1189  
1190              $( '.bulk-select-switcher' ).on( 'change', function() {
1191                  if ( this.checked ) {
1192                      $( '.bulk-select-switcher' ).prop( 'checked', true );
1193                      that.enableBulkSelection();
1194                  } else {
1195                      $( '.bulk-select-switcher' ).prop( 'checked', false );
1196                      that.disableBulkSelection();
1197                  }
1198              });
1199          },
1200  
1201          /**
1202           * Enable bulk selection checkboxes for menu items.
1203           *
1204           * @since 5.8.0
1205           */
1206          enableBulkSelection : function() {
1207              var checkbox = $( '#menu-to-edit .menu-item-checkbox' );
1208  
1209              $( '#menu-to-edit' ).addClass( 'bulk-selection' );
1210              $( '#nav-menu-bulk-actions-top' ).addClass( 'bulk-selection' );
1211              $( '#nav-menu-bulk-actions-bottom' ).addClass( 'bulk-selection' );
1212  
1213              $.each( checkbox, function() {
1214                  $(this).prop( 'disabled', false );
1215              });
1216          },
1217  
1218          /**
1219           * Disable bulk selection checkboxes for menu items.
1220           *
1221           * @since 5.8.0
1222           */
1223          disableBulkSelection : function() {
1224              var checkbox = $( '#menu-to-edit .menu-item-checkbox' );
1225  
1226              $( '#menu-to-edit' ).removeClass( 'bulk-selection' );
1227              $( '#nav-menu-bulk-actions-top' ).removeClass( 'bulk-selection' );
1228              $( '#nav-menu-bulk-actions-bottom' ).removeClass( 'bulk-selection' );
1229  
1230              if ( $( '.menu-items-delete' ).is( '[aria-describedby="pending-menu-items-to-delete"]' ) ) {
1231                  $( '.menu-items-delete' ).removeAttr( 'aria-describedby' );
1232              }
1233  
1234              $.each( checkbox, function() {
1235                  $(this).prop( 'disabled', true ).prop( 'checked', false );
1236              });
1237  
1238              $( '.menu-items-delete' ).addClass( 'disabled' );
1239              $( '#pending-menu-items-to-delete ul' ).empty();
1240          },
1241  
1242          /**
1243           * Listen for state changes on bulk action checkboxes.
1244           *
1245           * @since 5.8.0
1246           */
1247          attachMenuCheckBoxListeners : function() {
1248              var that = this;
1249  
1250              $( '#menu-to-edit' ).on( 'change', '.menu-item-checkbox', function() {
1251                  that.setRemoveSelectedButtonStatus();
1252              });
1253          },
1254  
1255          /**
1256           * Create delete button to remove menu items from collection.
1257           *
1258           * @since 5.8.0
1259           */
1260          attachMenuItemDeleteButton : function() {
1261              var that = this;
1262  
1263              $( document ).on( 'click', '.menu-items-delete', function( e ) {
1264                  var itemsPendingDeletion, itemsPendingDeletionList, deletionSpeech;
1265  
1266                  e.preventDefault();
1267  
1268                  if ( ! $(this).hasClass( 'disabled' ) ) {
1269                      $.each( $( '.menu-item-checkbox:checked' ), function( index, element ) {
1270                          $( element ).parents( 'li' ).find( 'a.item-delete' ).trigger( 'click' );
1271                      });
1272  
1273                      $( '.menu-items-delete' ).addClass( 'disabled' );
1274                      $( '.bulk-select-switcher' ).prop( 'checked', false );
1275  
1276                      itemsPendingDeletion     = '';
1277                      itemsPendingDeletionList = $( '#pending-menu-items-to-delete ul li' );
1278  
1279                      $.each( itemsPendingDeletionList, function( index, element ) {
1280                          var itemName = $( element ).find( '.pending-menu-item-name' ).text();
1281                          var itemSpeech = menus.menuItemDeletion.replace( '%s', itemName );
1282  
1283                          itemsPendingDeletion += itemSpeech;
1284                          if ( ( index + 1 ) < itemsPendingDeletionList.length ) {
1285                              itemsPendingDeletion += ', ';
1286                          }
1287                      });
1288  
1289                      deletionSpeech = menus.itemsDeleted.replace( '%s', itemsPendingDeletion );
1290                      wp.a11y.speak( deletionSpeech, 'polite' );
1291                      that.disableBulkSelection();
1292                      $( '#menu-to-edit' ).updateParentDropdown();
1293                      $( '#menu-to-edit' ).updateOrderDropdown();
1294                  }
1295              });
1296          },
1297  
1298          /**
1299           * List menu items awaiting deletion.
1300           *
1301           * @since 5.8.0
1302           */
1303          attachPendingMenuItemsListForDeletion : function() {
1304              $( '#post-body-content' ).on( 'change', '.menu-item-checkbox', function() {
1305                  var menuItemName, menuItemType, menuItemID, listedMenuItem;
1306  
1307                  if ( ! $( '.menu-items-delete' ).is( '[aria-describedby="pending-menu-items-to-delete"]' ) ) {
1308                      $( '.menu-items-delete' ).attr( 'aria-describedby', 'pending-menu-items-to-delete' );
1309                  }
1310  
1311                  menuItemName = $(this).next().text();
1312                  menuItemType = $(this).parent().next( '.item-controls' ).find( '.item-type' ).text();
1313                  menuItemID   = $(this).attr( 'data-menu-item-id' );
1314  
1315                  listedMenuItem = $( '#pending-menu-items-to-delete ul' ).find( '[data-menu-item-id=' + menuItemID + ']' );
1316                  if ( listedMenuItem.length > 0 ) {
1317                      listedMenuItem.remove();
1318                  }
1319  
1320                  if ( this.checked === true ) {
1321                      const $li = $( '<li>', { 'data-menu-item-id': menuItemID } );
1322                      $li.append( $( '<span>', {
1323                          'class': 'pending-menu-item-name',
1324                          text: menuItemName
1325                      } ) );
1326                      $li.append( ' ' );
1327                      $li.append( $( '<span>', {
1328                          'class': 'pending-menu-item-type',
1329                          text: '(' + menuItemType + ')',
1330                      } ) );
1331                      $li.append( $( '<span>', { 'class': 'separator' } ) );
1332                      $( '#pending-menu-items-to-delete ul' ).append( $li );
1333                  }
1334  
1335                  $( '#pending-menu-items-to-delete li .separator' ).html( ', ' );
1336                  $( '#pending-menu-items-to-delete li .separator' ).last().html( '.' );
1337              });
1338          },
1339  
1340          /**
1341           * Set status of bulk delete checkbox.
1342           *
1343           * @since 5.8.0
1344           */
1345          setBulkDeleteCheckboxStatus : function() {
1346              var that = this;
1347              var checkbox = $( '#menu-to-edit .menu-item-checkbox' );
1348  
1349              $.each( checkbox, function() {
1350                  if ( $(this).prop( 'disabled' ) ) {
1351                      $(this).prop( 'disabled', false );
1352                  } else {
1353                      $(this).prop( 'disabled', true );
1354                  }
1355  
1356                  if ( $(this).is( ':checked' ) ) {
1357                      $(this).prop( 'checked', false );
1358                  }
1359              });
1360  
1361              that.setRemoveSelectedButtonStatus();
1362          },
1363  
1364          /**
1365           * Set status of menu items removal button.
1366           *
1367           * @since 5.8.0
1368           */
1369          setRemoveSelectedButtonStatus : function() {
1370              var button = $( '.menu-items-delete' );
1371  
1372              if ( $( '.menu-item-checkbox:checked' ).length > 0 ) {
1373                  button.removeClass( 'disabled' );
1374              } else {
1375                  button.addClass( 'disabled' );
1376              }
1377          },
1378  
1379          attachMenuSaveSubmitListeners : function() {
1380              /*
1381               * When a navigation menu is saved, store a JSON representation of all form data
1382               * in a single input to avoid PHP `max_input_vars` limitations. See #14134.
1383               */
1384              $( '#update-nav-menu' ).on( 'submit', function() {
1385                  var navMenuData = $( '#update-nav-menu' ).serializeArray();
1386                  $( '[name="nav-menu-data"]' ).val( JSON.stringify( navMenuData ) );
1387              });
1388          },
1389  
1390          attachThemeLocationsListeners : function() {
1391              var loc = $('#nav-menu-theme-locations'), params = {};
1392              params.action = 'menu-locations-save';
1393              params['menu-settings-column-nonce'] = $('#menu-settings-column-nonce').val();
1394              loc.find('input[type="submit"]').on( 'click', function() {
1395                  loc.find('select').each(function() {
1396                      params[this.name] = $(this).val();
1397                  });
1398                  loc.find( '.spinner' ).addClass( 'is-active' );
1399                  $.post( ajaxurl, params, function() {
1400                      loc.find( '.spinner' ).removeClass( 'is-active' );
1401                  });
1402                  return false;
1403              });
1404          },
1405  
1406          attachQuickSearchListeners : function() {
1407              var searchTimer;
1408  
1409              // Prevent form submission.
1410              $( '#nav-menu-meta' ).on( 'submit', function( event ) {
1411                  event.preventDefault();
1412              });
1413  
1414              $( '#nav-menu-meta' ).on( 'input', '.quick-search', function() {
1415                  var $this = $( this );
1416  
1417                  $this.attr( 'autocomplete', 'off' );
1418  
1419                  if ( searchTimer ) {
1420                      clearTimeout( searchTimer );
1421                  }
1422  
1423                  searchTimer = setTimeout( function() {
1424                      api.updateQuickSearchResults( $this );
1425                  }, 500 );
1426              }).on( 'blur', '.quick-search', function() {
1427                  api.lastSearch = '';
1428              });
1429          },
1430  
1431          updateQuickSearchResults : function(input) {
1432              var panel, params,
1433                  minSearchLength = 1,
1434                  q = input.val(),
1435                  pageSearchChecklist = $( '#page-search-checklist' );
1436  
1437              /*
1438               * Avoid a new Ajax search when the pressed key (e.g. arrows)
1439               * doesn't change the searched term.
1440               */
1441              if ( api.lastSearch == q ) {
1442                  return;
1443              }
1444  
1445              /*
1446               * Reset results when search is less than or equal to
1447               * minimum characters for searched term.
1448               */
1449              if ( q.length <= minSearchLength ) {
1450                  pageSearchChecklist.empty();
1451                  wp.a11y.speak( wp.i18n.__( 'Search results cleared' ) );
1452                  return;
1453              }
1454  
1455              api.lastSearch = q;
1456  
1457              panel = input.parents('.tabs-panel');
1458              params = {
1459                  'action': 'menu-quick-search',
1460                  'response-format': 'markup',
1461                  'menu': $('#menu').val(),
1462                  'menu-settings-column-nonce': $('#menu-settings-column-nonce').val(),
1463                  'q': q,
1464                  'type': input.attr('name')
1465              };
1466  
1467              $( '.spinner', panel ).addClass( 'is-active' );
1468  
1469              $.post( ajaxurl, params, function(menuMarkup) {
1470                  api.processQuickSearchQueryResponse(menuMarkup, params, panel);
1471              });
1472          },
1473  
1474          addCustomLink : function( processMethod ) {
1475              var url = $('#custom-menu-item-url').val().toString(),
1476                  label = $('#custom-menu-item-name').val(),
1477                  urlRegex;
1478  
1479              if ( '' !== url ) {
1480                  url = url.trim();
1481              }
1482  
1483              processMethod = processMethod || api.addMenuItemToBottom;
1484  
1485              /*
1486               * Allow URLs including:
1487               * - http://example.com/
1488               * - //example.com
1489               * - /directory/
1490               * - ?query-param
1491               * - #target
1492               * - mailto:foo@example.com
1493               *
1494               * Any further validation will be handled on the server when the setting is attempted to be saved,
1495               * so this pattern does not need to be complete.
1496               */
1497              urlRegex = /^((\w+:)?\/\/\w.*|\w+:(?!\/\/$)|\/|\?|#)/;
1498              if ( ! urlRegex.test( url ) ) {
1499                  $('#customlinkdiv').addClass('form-invalid');
1500                  return false;
1501              }
1502  
1503              // Show the Ajax spinner.
1504              $( '.customlinkdiv .spinner' ).addClass( 'is-active' );
1505              this.addLinkToMenu( url, label, processMethod, function() {
1506                  // Remove the Ajax spinner.
1507                  $( '.customlinkdiv .spinner' ).removeClass( 'is-active' );
1508                  // Set custom link form back to defaults.
1509                  $('#custom-menu-item-name').val('').trigger( 'blur' );
1510                  $( '#custom-menu-item-url' ).val( '' ).attr( 'placeholder', 'https://' );
1511              });
1512          },
1513  
1514          addLinkToMenu : function(url, label, processMethod, callback) {
1515              processMethod = processMethod || api.addMenuItemToBottom;
1516              callback = callback || function(){};
1517  
1518              api.addItemToMenu({
1519                  '-1': {
1520                      'menu-item-type': 'custom',
1521                      'menu-item-url': url,
1522                      'menu-item-title': label
1523                  }
1524              }, processMethod, callback);
1525          },
1526  
1527          addItemToMenu : function(menuItem, processMethod, callback) {
1528              var menu = $('#menu').val(),
1529                  nonce = $('#menu-settings-column-nonce').val(),
1530                  params;
1531  
1532              processMethod = processMethod || function(){};
1533              callback = callback || function(){};
1534  
1535              params = {
1536                  'action': 'add-menu-item',
1537                  'menu': menu,
1538                  'menu-settings-column-nonce': nonce,
1539                  'menu-item': menuItem
1540              };
1541  
1542              $.post( ajaxurl, params, function(menuMarkup) {
1543                  var ins = $('#menu-instructions');
1544  
1545                  menuMarkup = menuMarkup || '';
1546                  menuMarkup = menuMarkup.toString().trim(); // Trim leading whitespaces.
1547                  processMethod(menuMarkup, params);
1548  
1549                  // Make it stand out a bit more visually, by adding a fadeIn.
1550                  $( 'li.pending' ).hide().fadeIn('slow');
1551                  $( '.drag-instructions' ).show();
1552                  if( ! ins.hasClass( 'menu-instructions-inactive' ) && ins.siblings().length )
1553                      ins.addClass( 'menu-instructions-inactive' );
1554  
1555                  callback();
1556              });
1557          },
1558  
1559          /**
1560           * Process the add menu item request response into menu list item. Appends to menu.
1561           *
1562           * @param {string} menuMarkup The text server response of menu item markup.
1563           *
1564           * @fires document#menu-item-added Passes menuMarkup as a jQuery object.
1565           */
1566          addMenuItemToBottom : function( menuMarkup ) {
1567              var $menuMarkup = $( menuMarkup );
1568              $menuMarkup.hideAdvancedMenuItemFields().appendTo( api.targetList );
1569              api.refreshKeyboardAccessibility();
1570              api.refreshAdvancedAccessibility();
1571              wp.a11y.speak( menus.itemAdded );
1572              $( document ).trigger( 'menu-item-added', [ $menuMarkup ] );
1573          },
1574  
1575          /**
1576           * Process the add menu item request response into menu list item. Prepends to menu.
1577           *
1578           * @param {string} menuMarkup The text server response of menu item markup.
1579           *
1580           * @fires document#menu-item-added Passes menuMarkup as a jQuery object.
1581           */
1582          addMenuItemToTop : function( menuMarkup ) {
1583              var $menuMarkup = $( menuMarkup );
1584              $menuMarkup.hideAdvancedMenuItemFields().prependTo( api.targetList );
1585              api.refreshKeyboardAccessibility();
1586              api.refreshAdvancedAccessibility();
1587              wp.a11y.speak( menus.itemAdded );
1588              $( document ).trigger( 'menu-item-added', [ $menuMarkup ] );
1589          },
1590  
1591          attachUnsavedChangesListener : function() {
1592              $('#menu-management input, #menu-management select, #menu-management, #menu-management textarea, .menu-location-menus select').on( 'change', function(){
1593                  api.registerChange();
1594              });
1595  
1596              if ( 0 !== $('#menu-to-edit').length || 0 !== $('.menu-location-menus select').length ) {
1597                  window.onbeforeunload = function(){
1598                      if ( api.menusChanged )
1599                          return wp.i18n.__( 'The changes you made will be lost if you navigate away from this page.' );
1600                  };
1601              } else {
1602                  // Make the post boxes read-only, as they can't be used yet.
1603                  $( '#menu-settings-column' ).find( 'input,select' ).end().find( 'a' ).attr( 'href', '#' ).off( 'click' );
1604              }
1605          },
1606  
1607          registerChange : function() {
1608              api.menusChanged = true;
1609          },
1610  
1611          attachTabsPanelListeners : function() {
1612              $('#menu-settings-column').on('click', function(e) {
1613                  var selectAreaMatch, selectAll, panelId, wrapper, items,
1614                      target = $(e.target);
1615  
1616                  if ( target.hasClass('nav-tab-link') ) {
1617  
1618                      panelId = target.data( 'type' );
1619  
1620                      wrapper = target.parents('.accordion-section-content').first();
1621  
1622                      // Upon changing tabs, we want to uncheck all checkboxes.
1623                      $( 'input', wrapper ).prop( 'checked', false );
1624  
1625                      $('.tabs-panel-active', wrapper).removeClass('tabs-panel-active').addClass('tabs-panel-inactive');
1626                      $('#' + panelId, wrapper).removeClass('tabs-panel-inactive').addClass('tabs-panel-active');
1627  
1628                      $('.tabs', wrapper).removeClass('tabs');
1629                      target.parent().addClass('tabs');
1630  
1631                      // Select the search bar.
1632                      $('.quick-search', wrapper).trigger( 'focus' );
1633  
1634                      // Hide controls in the search tab if no items found.
1635                      if ( ! wrapper.find( '.tabs-panel-active .menu-item-title' ).length ) {
1636                          wrapper.addClass( 'has-no-menu-item' );
1637                      } else {
1638                          wrapper.removeClass( 'has-no-menu-item' );
1639                      }
1640  
1641                      e.preventDefault();
1642                  } else if ( target.hasClass( 'select-all' ) ) {
1643                      selectAreaMatch = target.closest( '.button-controls' ).data( 'items-type' );
1644                      if ( selectAreaMatch ) {
1645                          items = $( '#' + selectAreaMatch + ' .tabs-panel-active .menu-item-title input' );
1646  
1647                          if ( items.length === items.filter( ':checked' ).length && ! target.is( ':checked' ) ) {
1648                              items.prop( 'checked', false );
1649                          } else if ( target.is( ':checked' ) ) {
1650                              items.prop( 'checked', true );
1651                          }
1652                      }
1653                  } else if ( target.hasClass( 'menu-item-checkbox' ) ) {
1654                      selectAreaMatch = target.closest( '.tabs-panel-active' ).parent().attr( 'id' );
1655                      if ( selectAreaMatch ) {
1656                          items     = $( '#' + selectAreaMatch + ' .tabs-panel-active .menu-item-title input' );
1657                          selectAll = $( '.button-controls[data-items-type="' + selectAreaMatch + '"] .select-all' );
1658  
1659                          if ( items.length === items.filter( ':checked' ).length && ! selectAll.is( ':checked' ) ) {
1660                              selectAll.prop( 'checked', true );
1661                          } else if ( selectAll.is( ':checked' ) ) {
1662                              selectAll.prop( 'checked', false );
1663                          }
1664                      }
1665                  } else if ( target.hasClass('submit-add-to-menu') ) {
1666                      api.registerChange();
1667  
1668                      if ( e.target.id && 'submit-customlinkdiv' == e.target.id )
1669                          api.addCustomLink( api.addMenuItemToBottom );
1670                      else if ( e.target.id && -1 != e.target.id.indexOf('submit-') )
1671                          $('#' + e.target.id.replace(/submit-/, '')).addSelectedToMenu( api.addMenuItemToBottom );
1672                      return false;
1673                  }
1674              });
1675  
1676              /*
1677               * Delegate the `click` event and attach it just to the pagination
1678               * links thus excluding the current page `<span>`. See ticket #35577.
1679               */
1680              $( '#nav-menu-meta' ).on( 'click', 'a.page-numbers', function() {
1681                  var $container = $( this ).closest( '.inside' );
1682  
1683                  $.post( ajaxurl, this.href.replace( /.*\?/, '' ).replace( /action=([^&]*)/, '' ) + '&action=menu-get-metabox',
1684                      function( resp ) {
1685                          var metaBoxData = JSON.parse( resp ),
1686                              toReplace;
1687  
1688                          if ( -1 === resp.indexOf( 'replace-id' ) ) {
1689                              return;
1690                          }
1691  
1692                          // Get the post type menu meta box to update.
1693                          toReplace = document.getElementById( metaBoxData['replace-id'] );
1694  
1695                          if ( ! metaBoxData.markup || ! toReplace ) {
1696                              return;
1697                          }
1698  
1699                          // Update the post type menu meta box with new content from the response.
1700                          $container.html( metaBoxData.markup );
1701                      }
1702                  );
1703  
1704                  return false;
1705              });
1706          },
1707  
1708          eventOnClickEditLink : function(clickedEl) {
1709              var settings, item,
1710              matchedSection = /#(.*)$/.exec(clickedEl.href);
1711  
1712              if ( matchedSection && matchedSection[1] ) {
1713                  settings = $('#'+matchedSection[1]);
1714                  item = settings.parent();
1715                  if( 0 !== item.length ) {
1716                      if( item.hasClass('menu-item-edit-inactive') ) {
1717                          if( ! settings.data('menu-item-data') ) {
1718                              settings.data( 'menu-item-data', settings.getItemData() );
1719                          }
1720                          settings.slideDown('fast');
1721                          item.removeClass('menu-item-edit-inactive')
1722                              .addClass('menu-item-edit-active');
1723                      } else {
1724                          settings.slideUp('fast');
1725                          item.removeClass('menu-item-edit-active')
1726                              .addClass('menu-item-edit-inactive');
1727                      }
1728                      return false;
1729                  }
1730              }
1731          },
1732  
1733          eventOnClickCancelLink : function(clickedEl) {
1734              var settings = $( clickedEl ).closest( '.menu-item-settings' ),
1735                  thisMenuItem = $( clickedEl ).closest( '.menu-item' );
1736  
1737              thisMenuItem.removeClass( 'menu-item-edit-active' ).addClass( 'menu-item-edit-inactive' );
1738              settings.setItemData( settings.data( 'menu-item-data' ) ).hide();
1739              // Restore the title of the currently active/expanded menu item.
1740              thisMenuItem.find( '.menu-item-title' ).text( settings.data( 'menu-item-data' )['menu-item-title'] );
1741  
1742              return false;
1743          },
1744  
1745          eventOnClickMenuSave : function() {
1746              var menuName = $('#menu-name'),
1747                  menuNameVal = menuName.val();
1748  
1749              // Cancel and warn if invalid menu name.
1750              if ( ! menuNameVal || ! menuNameVal.replace( /\s+/, '' ) ) {
1751                  menuName.parent().addClass( 'form-invalid' );
1752                  return false;
1753              }
1754              // Copy menu theme locations.
1755              // Note: This appears to be dead code since #nav-menu-theme-locations no longer exists, perhaps removed in r32842.
1756              var $updateNavMenu = $('#update-nav-menu');
1757              $('#nav-menu-theme-locations select').each(function() {
1758                  $updateNavMenu.append(
1759                      $( '<input>', {
1760                          type: 'hidden',
1761                          name: this.name,
1762                          value: $( this ).val(),
1763                      } )
1764                  );
1765              });
1766              // Update menu item position data.
1767              api.menuList.find('.menu-item-data-position').val( function(index) { return index + 1; } );
1768              window.onbeforeunload = null;
1769  
1770              return true;
1771          },
1772  
1773          eventOnClickMenuDelete : function() {
1774              // Delete warning AYS.
1775              if ( window.confirm( wp.i18n.__( 'You are about to permanently delete this menu.\n\'Cancel\' to stop, \'OK\' to delete.' ) ) ) {
1776                  window.onbeforeunload = null;
1777                  return true;
1778              }
1779              return false;
1780          },
1781  
1782          eventOnClickMenuItemDelete : function(clickedEl) {
1783              var itemID = parseInt(clickedEl.id.replace('delete-', ''), 10);
1784  
1785              api.removeMenuItem( $('#menu-item-' + itemID) );
1786              api.registerChange();
1787              return false;
1788          },
1789  
1790          /**
1791           * Process the quick search response into a search result
1792           *
1793           * @param {string} resp  The server response to the query.
1794           * @param {Object} req   The request arguments.
1795           * @param {jQuery} panel The tabs panel we're searching in.
1796           */
1797          processQuickSearchQueryResponse : function(resp, req, panel) {
1798              var matched, newID,
1799              takenIDs = {},
1800              form = document.getElementById('nav-menu-meta'),
1801              pattern = /menu-item[(\[^]\]*/,
1802              $items = $('<div>').html(resp).find('li'),
1803              wrapper = panel.closest( '.accordion-section-content' ),
1804              selectAll = wrapper.find( '.button-controls .select-all' ),
1805              $item;
1806  
1807              if( ! $items.length ) {
1808                  let noResults = wp.i18n.__( 'No results found.' );
1809                  const li = $( '<li>' );
1810                  const p = $( '<p>', { text: noResults } );
1811                  li.append( p );
1812                  $('.categorychecklist', panel).empty().append( li );
1813                  $( '.spinner', panel ).removeClass( 'is-active' );
1814                  wrapper.addClass( 'has-no-menu-item' );
1815                  wp.a11y.speak( noResults, 'assertive' );
1816                  return;
1817              }
1818  
1819              $items.each(function(){
1820                  $item = $(this);
1821  
1822                  // Make a unique DB ID number.
1823                  matched = pattern.exec($item.html());
1824  
1825                  if ( matched && matched[1] ) {
1826                      newID = matched[1];
1827                      while( form.elements['menu-item[' + newID + '][menu-item-type]'] || takenIDs[ newID ] ) {
1828                          newID--;
1829                      }
1830  
1831                      takenIDs[newID] = true;
1832                      if ( newID != matched[1] ) {
1833                          $item.html( $item.html().replace(new RegExp(
1834                              'menu-item\\[' + matched[1] + '\\]', 'g'),
1835                              'menu-item[' + newID + ']'
1836                          ) );
1837                      }
1838                  }
1839              });
1840  
1841              $('.categorychecklist', panel).html( $items );
1842              wp.a11y.speak( wp.i18n.sprintf( wp.i18n.__( '%d Search Results Found' ), $items.length ), 'assertive' );
1843              $( '.spinner', panel ).removeClass( 'is-active' );
1844              wrapper.removeClass( 'has-no-menu-item' );
1845  
1846              if ( selectAll.is( ':checked' ) ) {
1847                  selectAll.prop( 'checked', false );
1848              }
1849          },
1850  
1851          /**
1852           * Remove a menu item.
1853           *
1854           * @param {Object} el The element to be removed as a jQuery object.
1855           *
1856           * @fires document#menu-removing-item Passes the element to be removed.
1857           */
1858          removeMenuItem : function(el) {
1859              var children = el.childMenuItems();
1860  
1861              $( document ).trigger( 'menu-removing-item', [ el ] );
1862              el.addClass('deleting').animate({
1863                      opacity : 0,
1864                      height: 0
1865                  }, 350, function() {
1866                      var ins = $('#menu-instructions');
1867                      el.remove();
1868                      children.shiftDepthClass( -1 ).updateParentMenuItemDBId();
1869                      if ( 0 === $( '#menu-to-edit li' ).length ) {
1870                          $( '.drag-instructions' ).hide();
1871                          ins.removeClass( 'menu-instructions-inactive' );
1872                      }
1873                      api.refreshAdvancedAccessibility();
1874                      wp.a11y.speak( menus.itemRemoved );
1875                      $( '#menu-to-edit' ).updateParentDropdown();
1876                      $( '#menu-to-edit' ).updateOrderDropdown();
1877                  });
1878          },
1879  
1880          depthToPx : function(depth) {
1881              return depth * api.options.menuItemDepthPerLevel;
1882          },
1883  
1884          pxToDepth : function(px) {
1885              return Math.floor(px / api.options.menuItemDepthPerLevel);
1886          }
1887  
1888      };
1889  
1890      $( function() {
1891  
1892          wpNavMenu.init();
1893  
1894          // Prevent focused element from being hidden by the sticky footer.
1895          $( '.menu-edit a, .menu-edit button, .menu-edit input, .menu-edit textarea, .menu-edit select' ).on('focus', function() {
1896              if ( window.innerWidth >= 783 ) {
1897                  var navMenuHeight = $( '#nav-menu-footer' ).height() + 20;
1898                  var bottomOffset = $(this).offset().top - ( $(window).scrollTop() + $(window).height() - $(this).height() );
1899  
1900                  if ( bottomOffset > 0 ) {
1901                      bottomOffset = 0;
1902                  }
1903                  bottomOffset = bottomOffset * -1;
1904  
1905                  if( bottomOffset < navMenuHeight ) {
1906                      var scrollTop = $(document).scrollTop();
1907                      $(document).scrollTop( scrollTop + ( navMenuHeight - bottomOffset ) );
1908                  }
1909              }
1910          });
1911      });
1912  
1913      // Show bulk action.
1914      $( document ).on( 'menu-item-added', function() {
1915          if ( ! $( '.bulk-actions' ).is( ':visible' ) ) {
1916              $( '.bulk-actions' ).show();
1917          }
1918      } );
1919  
1920      // Hide bulk action.
1921      $( document ).on( 'menu-removing-item', function( e, el ) {
1922          var menuElement = $( el ).parents( '#menu-to-edit' );
1923          if ( menuElement.find( 'li' ).length === 1 && $( '.bulk-actions' ).is( ':visible' ) ) {
1924              $( '.bulk-actions' ).hide();
1925          }
1926      } );
1927  
1928  })(jQuery);