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/wp-admin/js/ -> nav-menu.js (source)

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


Generated : Sat Dec 21 08:20:01 2024 Cross-referenced by PHPXref