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   1  /**
   2   * WordPress Administration Navigation Menu
   3   * Interface JS functions
   4   *
   5   * @version 2.0.0
   6   *
   7   * @package WordPress
   8   * @subpackage Administration
   9   */
  10  
  11  var wpNavMenu;
  12  
  13  (function($) {
  14  
  15      var api = wpNavMenu = {
  16  
  17          options : {
  18              menuItemDepthPerLevel : 30, // Do not use directly. Use depthToPx and pxToDepth instead.
  19              globalMaxDepth : 11
  20          },
  21  
  22          menuList : undefined,    // Set in init.
  23          targetList : undefined, // Set in init.
  24          menusChanged : false,
  25          isRTL: !! ( 'undefined' != typeof isRtl && isRtl ),
  26          negateIfRTL: ( 'undefined' != typeof isRtl && isRtl ) ? -1 : 1,
  27  
  28          // Functions that run on init.
  29          init : function() {
  30              api.menuList = $('#menu-to-edit');
  31              api.targetList = api.menuList;
  32  
  33              this.jQueryExtensions();
  34  
  35              this.attachMenuEditListeners();
  36  
  37              this.setupInputWithDefaultTitle();
  38              this.attachQuickSearchListeners();
  39              this.attachThemeLocationsListeners();
  40  
  41              this.attachTabsPanelListeners();
  42  
  43              this.attachUnsavedChangesListener();
  44  
  45              if( api.menuList.length ) // If no menu, we're in the + tab.
  46                  this.initSortables();
  47  
  48              this.initToggles();
  49  
  50              this.initTabManager();
  51          },
  52  
  53          jQueryExtensions : function() {
  54              // jQuery extensions
  55              $.fn.extend({
  56                  menuItemDepth : function() {
  57                      var margin = api.isRTL ? this.eq(0).css('margin-right') : this.eq(0).css('margin-left');
  58                      return api.pxToDepth( margin && -1 != margin.indexOf('px') ? margin.slice(0, -2) : 0 );
  59                  },
  60                  updateDepthClass : function(current, prev) {
  61                      return this.each(function(){
  62                          var t = $(this);
  63                          prev = prev || t.menuItemDepth();
  64                          $(this).removeClass('menu-item-depth-'+ prev )
  65                              .addClass('menu-item-depth-'+ current );
  66                      });
  67                  },
  68                  shiftDepthClass : function(change) {
  69                      return this.each(function(){
  70                          var t = $(this),
  71                              depth = t.menuItemDepth();
  72                          $(this).removeClass('menu-item-depth-'+ depth )
  73                              .addClass('menu-item-depth-'+ (depth + change) );
  74                      });
  75                  },
  76                  childMenuItems : function() {
  77                      var result = $();
  78                      this.each(function(){
  79                          var t = $(this), depth = t.menuItemDepth(), next = t.next();
  80                          while( next.length && next.menuItemDepth() > depth ) {
  81                              result = result.add( next );
  82                              next = next.next();
  83                          }
  84                      });
  85                      return result;
  86                  },
  87                  updateParentMenuItemDBId : function() {
  88                      return this.each(function(){
  89                          var item = $(this),
  90                              input = item.find('.menu-item-data-parent-id'),
  91                              depth = item.menuItemDepth(),
  92                              parent = item.prev();
  93  
  94                          if( depth == 0 ) { // Item is on the top level, has no parent
  95                              input.val(0);
  96                          } else { // Find the parent item, and retrieve its object id.
  97                              while( ! parent[0] || ! parent[0].className || -1 == parent[0].className.indexOf('menu-item') || ( parent.menuItemDepth() != depth - 1 ) )
  98                                  parent = parent.prev();
  99                              input.val( parent.find('.menu-item-data-db-id').val() );
 100                          }
 101                      });
 102                  },
 103                  hideAdvancedMenuItemFields : function() {
 104                      return this.each(function(){
 105                          var that = $(this);
 106                          $('.hide-column-tog').not(':checked').each(function(){
 107                              that.find('.field-' + $(this).val() ).addClass('hidden-field');
 108                          });
 109                      });
 110                  },
 111                  /**
 112                   * Adds selected menu items to the menu.
 113                   *
 114                   * @param jQuery metabox The metabox jQuery object.
 115                   */
 116                  addSelectedToMenu : function(processMethod) {
 117                      if ( 0 == $('#menu-to-edit').length ) {
 118                          return false;
 119                      }
 120  
 121                      return this.each(function() {
 122                          var t = $(this), menuItems = {},
 123                              checkboxes = t.find('.tabs-panel-active .categorychecklist li input:checked'),
 124                              re = new RegExp('menu-item\\[(\[^\\]\]*)');
 125  
 126                          processMethod = processMethod || api.addMenuItemToBottom;
 127  
 128                          // If no items are checked, bail.
 129                          if ( !checkboxes.length )
 130                              return false;
 131  
 132                          // Show the ajax spinner
 133                          t.find('img.waiting').show();
 134  
 135                          // Retrieve menu item data
 136                          $(checkboxes).each(function(){
 137                              var t = $(this),
 138                                  listItemDBIDMatch = re.exec( t.attr('name') ),
 139                                  listItemDBID = 'undefined' == typeof listItemDBIDMatch[1] ? 0 : parseInt(listItemDBIDMatch[1], 10);
 140                              if ( this.className && -1 != this.className.indexOf('add-to-top') )
 141                                  processMethod = api.addMenuItemToTop;
 142                              menuItems[listItemDBID] = t.closest('li').getItemData( 'add-menu-item', listItemDBID );
 143                          });
 144  
 145                          // Add the items
 146                          api.addItemToMenu(menuItems, processMethod, function(){
 147                              // Deselect the items and hide the ajax spinner
 148                              checkboxes.removeAttr('checked');
 149                              t.find('img.waiting').hide();
 150                          });
 151                      });
 152                  },
 153                  getItemData : function( itemType, id ) {
 154                      itemType = itemType || 'menu-item';
 155  
 156                      var itemData = {}, i,
 157                      fields = [
 158                          'menu-item-db-id',
 159                          'menu-item-object-id',
 160                          'menu-item-object',
 161                          'menu-item-parent-id',
 162                          'menu-item-position',
 163                          'menu-item-type',
 164                          'menu-item-title',
 165                          'menu-item-url',
 166                          'menu-item-description',
 167                          'menu-item-attr-title',
 168                          'menu-item-target',
 169                          'menu-item-classes',
 170                          'menu-item-xfn'
 171                      ];
 172  
 173                      if( !id && itemType == 'menu-item' ) {
 174                          id = this.find('.menu-item-data-db-id').val();
 175                      }
 176  
 177                      if( !id ) return itemData;
 178  
 179                      this.find('input').each(function() {
 180                          var field;
 181                          i = fields.length;
 182                          while ( i-- ) {
 183                              if( itemType == 'menu-item' )
 184                                  field = fields[i] + '[' + id + ']';
 185                              else if( itemType == 'add-menu-item' )
 186                                  field = 'menu-item[' + id + '][' + fields[i] + ']';
 187  
 188                              if (
 189                                  this.name &&
 190                                  field == this.name
 191                              ) {
 192                                  itemData[fields[i]] = this.value;
 193                              }
 194                          }
 195                      });
 196  
 197                      return itemData;
 198                  },
 199                  setItemData : function( itemData, itemType, id ) { // Can take a type, such as 'menu-item', or an id.
 200                      itemType = itemType || 'menu-item';
 201  
 202                      if( !id && itemType == 'menu-item' ) {
 203                          id = $('.menu-item-data-db-id', this).val();
 204                      }
 205  
 206                      if( !id ) return this;
 207  
 208                      this.find('input').each(function() {
 209                          var t = $(this), field;
 210                          $.each( itemData, function( attr, val ) {
 211                              if( itemType == 'menu-item' )
 212                                  field = attr + '[' + id + ']';
 213                              else if( itemType == 'add-menu-item' )
 214                                  field = 'menu-item[' + id + '][' + attr + ']';
 215  
 216                              if ( field == t.attr('name') ) {
 217                                  t.val( val );
 218                              }
 219                          });
 220                      });
 221                      return this;
 222                  }
 223              });
 224          },
 225  
 226          initToggles : function() {
 227              // init postboxes
 228              postboxes.add_postbox_toggles('nav-menus');
 229  
 230              // adjust columns functions for menus UI
 231              columns.useCheckboxesForHidden();
 232              columns.checked = function(field) {
 233                  $('.field-' + field).removeClass('hidden-field');
 234              }
 235              columns.unchecked = function(field) {
 236                  $('.field-' + field).addClass('hidden-field');
 237              }
 238              // hide fields
 239              api.menuList.hideAdvancedMenuItemFields();
 240          },
 241  
 242          initSortables : function() {
 243              var currentDepth = 0, originalDepth, minDepth, maxDepth,
 244                  prev, next, prevBottom, nextThreshold, helperHeight, transport,
 245                  menuEdge = api.menuList.offset().left,
 246                  body = $('body'), maxChildDepth,
 247                  menuMaxDepth = initialMenuMaxDepth();
 248  
 249              // Use the right edge if RTL.
 250              menuEdge += api.isRTL ? api.menuList.width() : 0;
 251  
 252              api.menuList.sortable({
 253                  handle: '.menu-item-handle',
 254                  placeholder: 'sortable-placeholder',
 255                  start: function(e, ui) {
 256                      var height, width, parent, children, tempHolder;
 257  
 258                      // handle placement for rtl orientation
 259                      if ( api.isRTL )
 260                          ui.item[0].style.right = 'auto';
 261  
 262                      transport = ui.item.children('.menu-item-transport');
 263  
 264                      // Set depths. currentDepth must be set before children are located.
 265                      originalDepth = ui.item.menuItemDepth();
 266                      updateCurrentDepth(ui, originalDepth);
 267  
 268                      // Attach child elements to parent
 269                      // Skip the placeholder
 270                      parent = ( ui.item.next()[0] == ui.placeholder[0] ) ? ui.item.next() : ui.item;
 271                      children = parent.childMenuItems();
 272                      transport.append( children );
 273  
 274                      // Update the height of the placeholder to match the moving item.
 275                      height = transport.outerHeight();
 276                      // If there are children, account for distance between top of children and parent
 277                      height += ( height > 0 ) ? (ui.placeholder.css('margin-top').slice(0, -2) * 1) : 0;
 278                      height += ui.helper.outerHeight();
 279                      helperHeight = height;
 280                      height -= 2; // Subtract 2 for borders
 281                      ui.placeholder.height(height);
 282  
 283                      // Update the width of the placeholder to match the moving item.
 284                      maxChildDepth = originalDepth;
 285                      children.each(function(){
 286                          var depth = $(this).menuItemDepth();
 287                          maxChildDepth = (depth > maxChildDepth) ? depth : maxChildDepth;
 288                      });
 289                      width = ui.helper.find('.menu-item-handle').outerWidth(); // Get original width
 290                      width += api.depthToPx(maxChildDepth - originalDepth); // Account for children
 291                      width -= 2; // Subtract 2 for borders
 292                      ui.placeholder.width(width);
 293  
 294                      // Update the list of menu items.
 295                      tempHolder = ui.placeholder.next();
 296                      tempHolder.css( 'margin-top', helperHeight + 'px' ); // Set the margin to absorb the placeholder
 297                      ui.placeholder.detach(); // detach or jQuery UI will think the placeholder is a menu item
 298                      $(this).sortable( "refresh" ); // The children aren't sortable. We should let jQ UI know.
 299                      ui.item.after( ui.placeholder ); // reattach the placeholder.
 300                      tempHolder.css('margin-top', 0); // reset the margin
 301  
 302                      // Now that the element is complete, we can update...
 303                      updateSharedVars(ui);
 304                  },
 305                  stop: function(e, ui) {
 306                      var children, depthChange = currentDepth - originalDepth;
 307  
 308                      // Return child elements to the list
 309                      children = transport.children().insertAfter(ui.item);
 310  
 311                      // Update depth classes
 312                      if( depthChange != 0 ) {
 313                          ui.item.updateDepthClass( currentDepth );
 314                          children.shiftDepthClass( depthChange );
 315                          updateMenuMaxDepth( depthChange );
 316                      }
 317                      // Register a change
 318                      api.registerChange();
 319                      // Update the item data.
 320                      ui.item.updateParentMenuItemDBId();
 321  
 322                      // address sortable's incorrectly-calculated top in opera
 323                      ui.item[0].style.top = 0;
 324  
 325                      // handle drop placement for rtl orientation
 326                      if ( api.isRTL ) {
 327                          ui.item[0].style.left = 'auto';
 328                          ui.item[0].style.right = 0;
 329                      }
 330  
 331                      // The width of the tab bar might have changed. Just in case.
 332                      api.refreshMenuTabs( true );
 333                  },
 334                  change: function(e, ui) {
 335                      // Make sure the placeholder is inside the menu.
 336                      // Otherwise fix it, or we're in trouble.
 337                      if( ! ui.placeholder.parent().hasClass('menu') )
 338                          (prev.length) ? prev.after( ui.placeholder ) : api.menuList.prepend( ui.placeholder );
 339  
 340                      updateSharedVars(ui);
 341                  },
 342                  sort: function(e, ui) {
 343                      var offset = ui.helper.offset(),
 344                          edge = api.isRTL ? offset.left + ui.helper.width() : offset.left,
 345                          depth = api.negateIfRTL * api.pxToDepth( edge - menuEdge );
 346                      // Check and correct if depth is not within range.
 347                      // Also, if the dragged element is dragged upwards over
 348                      // an item, shift the placeholder to a child position.
 349                      if ( depth > maxDepth || offset.top < prevBottom ) depth = maxDepth;
 350                      else if ( depth < minDepth ) depth = minDepth;
 351  
 352                      if( depth != currentDepth )
 353                          updateCurrentDepth(ui, depth);
 354  
 355                      // If we overlap the next element, manually shift downwards
 356                      if( nextThreshold && offset.top + helperHeight > nextThreshold ) {
 357                          next.after( ui.placeholder );
 358                          updateSharedVars( ui );
 359                          $(this).sortable( "refreshPositions" );
 360                      }
 361                  }
 362              });
 363  
 364  			function updateSharedVars(ui) {
 365                  var depth;
 366  
 367                  prev = ui.placeholder.prev();
 368                  next = ui.placeholder.next();
 369  
 370                  // Make sure we don't select the moving item.
 371                  if( prev[0] == ui.item[0] ) prev = prev.prev();
 372                  if( next[0] == ui.item[0] ) next = next.next();
 373  
 374                  prevBottom = (prev.length) ? prev.offset().top + prev.height() : 0;
 375                  nextThreshold = (next.length) ? next.offset().top + next.height() / 3 : 0;
 376                  minDepth = (next.length) ? next.menuItemDepth() : 0;
 377  
 378                  if( prev.length )
 379                      maxDepth = ( (depth = prev.menuItemDepth() + 1) > api.options.globalMaxDepth ) ? api.options.globalMaxDepth : depth;
 380                  else
 381                      maxDepth = 0;
 382              }
 383  
 384  			function updateCurrentDepth(ui, depth) {
 385                  ui.placeholder.updateDepthClass( depth, currentDepth );
 386                  currentDepth = depth;
 387              }
 388  
 389  			function initialMenuMaxDepth() {
 390                  if( ! body[0].className ) return 0;
 391                  var match = body[0].className.match(/menu-max-depth-(\d+)/);
 392                  return match && match[1] ? parseInt(match[1]) : 0;
 393              }
 394  
 395  			function updateMenuMaxDepth( depthChange ) {
 396                  var depth, newDepth = menuMaxDepth;
 397                  if ( depthChange === 0 ) {
 398                      return;
 399                  } else if ( depthChange > 0 ) {
 400                      depth = maxChildDepth + depthChange;
 401                      if( depth > menuMaxDepth )
 402                          newDepth = depth;
 403                  } else if ( depthChange < 0 && maxChildDepth == menuMaxDepth ) {
 404                      while( ! $('.menu-item-depth-' + newDepth, api.menuList).length && newDepth > 0 )
 405                          newDepth--;
 406                  }
 407                  // Update the depth class.
 408                  body.removeClass( 'menu-max-depth-' + menuMaxDepth ).addClass( 'menu-max-depth-' + newDepth );
 409                  menuMaxDepth = newDepth;
 410              }
 411          },
 412  
 413          attachMenuEditListeners : function() {
 414              var that = this;
 415              $('#update-nav-menu').bind('click', function(e) {
 416                  if ( e.target && e.target.className ) {
 417                      if ( -1 != e.target.className.indexOf('item-edit') ) {
 418                          return that.eventOnClickEditLink(e.target);
 419                      } else if ( -1 != e.target.className.indexOf('menu-save') ) {
 420                          return that.eventOnClickMenuSave(e.target);
 421                      } else if ( -1 != e.target.className.indexOf('menu-delete') ) {
 422                          return that.eventOnClickMenuDelete(e.target);
 423                      } else if ( -1 != e.target.className.indexOf('item-delete') ) {
 424                          return that.eventOnClickMenuItemDelete(e.target);
 425                      } else if ( -1 != e.target.className.indexOf('item-cancel') ) {
 426                          return that.eventOnClickCancelLink(e.target);
 427                      }
 428                  }
 429              });
 430          },
 431  
 432          /**
 433           * An interface for managing default values for input elements
 434           * that is both JS and accessibility-friendly.
 435           *
 436           * Input elements that add the class 'input-with-default-title'
 437           * will have their values set to the provided HTML title when empty.
 438           */
 439          setupInputWithDefaultTitle : function() {
 440              var name = 'input-with-default-title';
 441  
 442              $('.' + name).each( function(){
 443                  var $t = $(this), title = $t.attr('title'), val = $t.val();
 444                  $t.data( name, title );
 445  
 446                  if( '' == val ) $t.val( title );
 447                  else if ( title == val ) return;
 448                  else $t.removeClass( name );
 449              }).focus( function(){
 450                  var $t = $(this);
 451                  if( $t.val() == $t.data(name) )
 452                      $t.val('').removeClass( name );
 453              }).blur( function(){
 454                  var $t = $(this);
 455                  if( '' == $t.val() )
 456                      $t.addClass( name ).val( $t.data(name) );
 457              });
 458          },
 459  
 460          attachThemeLocationsListeners : function() {
 461              var loc = $('#nav-menu-theme-locations'), params = {};
 462              params['action'] = 'menu-locations-save';
 463              params['menu-settings-column-nonce'] = $('#menu-settings-column-nonce').val();
 464              loc.find('input[type=submit]').click(function() {
 465                  loc.find('select').each(function() {
 466                      params[this.name] = $(this).val();
 467                  });
 468                  loc.find('.waiting').show();
 469                  $.post( ajaxurl, params, function(r) {
 470                      loc.find('.waiting').hide();
 471                  });
 472                  return false;
 473              });
 474          },
 475  
 476          attachQuickSearchListeners : function() {
 477              var searchTimer;
 478  
 479              $('.quick-search').keypress(function(e){
 480                  var t = $(this);
 481  
 482                  if( 13 == e.which ) {
 483                      api.updateQuickSearchResults( t );
 484                      return false;
 485                  }
 486  
 487                  if( searchTimer ) clearTimeout(searchTimer);
 488  
 489                  searchTimer = setTimeout(function(){
 490                      api.updateQuickSearchResults( t );
 491                  }, 400);
 492              }).attr('autocomplete','off');
 493          },
 494  
 495          updateQuickSearchResults : function(input) {
 496              var panel, params,
 497              minSearchLength = 2,
 498              q = input.val();
 499  
 500              if( q.length < minSearchLength ) return;
 501  
 502              panel = input.parents('.tabs-panel');
 503              params = {
 504                  'action': 'menu-quick-search',
 505                  'response-format': 'markup',
 506                  'menu': $('#menu').val(),
 507                  'menu-settings-column-nonce': $('#menu-settings-column-nonce').val(),
 508                  'q': q,
 509                  'type': input.attr('name')
 510              };
 511  
 512              $('img.waiting', panel).show();
 513  
 514              $.post( ajaxurl, params, function(menuMarkup) {
 515                  api.processQuickSearchQueryResponse(menuMarkup, params, panel);
 516              });
 517          },
 518  
 519          addCustomLink : function( processMethod ) {
 520              var url = $('#custom-menu-item-url').val(),
 521                  label = $('#custom-menu-item-name').val();
 522  
 523              processMethod = processMethod || api.addMenuItemToBottom;
 524  
 525              if ( '' == url || 'http://' == url )
 526                  return false;
 527  
 528              // Show the ajax spinner
 529              $('.customlinkdiv img.waiting').show();
 530              this.addLinkToMenu( url, label, processMethod, function() {
 531                  // Remove the ajax spinner
 532                  $('.customlinkdiv img.waiting').hide();
 533                  // Set custom link form back to defaults
 534                  $('#custom-menu-item-name').val('').blur();
 535                  $('#custom-menu-item-url').val('http://');
 536              });
 537          },
 538  
 539          addLinkToMenu : function(url, label, processMethod, callback) {
 540              processMethod = processMethod || api.addMenuItemToBottom;
 541              callback = callback || function(){};
 542  
 543              api.addItemToMenu({
 544                  '-1': {
 545                      'menu-item-type': 'custom',
 546                      'menu-item-url': url,
 547                      'menu-item-title': label
 548                  }
 549              }, processMethod, callback);
 550          },
 551  
 552          addItemToMenu : function(menuItem, processMethod, callback) {
 553              var menu = $('#menu').val(),
 554                  nonce = $('#menu-settings-column-nonce').val();
 555  
 556              processMethod = processMethod || function(){};
 557              callback = callback || function(){};
 558  
 559              params = {
 560                  'action': 'add-menu-item',
 561                  'menu': menu,
 562                  'menu-settings-column-nonce': nonce,
 563                  'menu-item': menuItem
 564              };
 565  
 566              $.post( ajaxurl, params, function(menuMarkup) {
 567                  var ins = $('#menu-instructions');
 568                  processMethod(menuMarkup, params);
 569                  if( ! ins.hasClass('menu-instructions-inactive') && ins.siblings().length )
 570                      ins.addClass('menu-instructions-inactive');
 571                  callback();
 572              });
 573          },
 574  
 575          /**
 576           * Process the add menu item request response into menu list item.
 577           *
 578           * @param string menuMarkup The text server response of menu item markup.
 579           * @param object req The request arguments.
 580           */
 581          addMenuItemToBottom : function( menuMarkup, req ) {
 582              $(menuMarkup).hideAdvancedMenuItemFields().appendTo( api.targetList );
 583          },
 584  
 585          addMenuItemToTop : function( menuMarkup, req ) {
 586              $(menuMarkup).hideAdvancedMenuItemFields().prependTo( api.targetList );
 587          },
 588  
 589          attachUnsavedChangesListener : function() {
 590              $('#menu-management input, #menu-management select, #menu-management, #menu-management textarea').change(function(){
 591                  api.registerChange();
 592              });
 593  
 594              if ( 0 != $('#menu-to-edit').length ) {
 595                  window.onbeforeunload = function(){
 596                      if ( api.menusChanged )
 597                          return navMenuL10n.saveAlert;
 598                  };
 599              } else {
 600                  // Make the post boxes read-only, as they can't be used yet
 601                  $('#menu-settings-column').find('input,select').attr('disabled', 'disabled').end().find('a').attr('href', '#').unbind('click');
 602              }
 603          },
 604  
 605          registerChange : function() {
 606              api.menusChanged = true;
 607          },
 608  
 609          attachTabsPanelListeners : function() {
 610              $('#menu-settings-column').bind('click', function(e) {
 611                  var selectAreaMatch, panelId, wrapper, items,
 612                      target = $(e.target);
 613  
 614                  if ( target.hasClass('nav-tab-link') ) {
 615                      panelId = /#(.*)$/.exec(e.target.href);
 616                      if ( panelId && panelId[1] )
 617                          panelId = panelId[1]
 618                      else
 619                          return false;
 620  
 621                      wrapper = target.parents('.inside').first();
 622  
 623                      // upon changing tabs, we want to uncheck all checkboxes
 624                      $('input', wrapper).removeAttr('checked');
 625  
 626                      $('.tabs-panel-active', wrapper).removeClass('tabs-panel-active').addClass('tabs-panel-inactive');
 627                      $('#' + panelId, wrapper).removeClass('tabs-panel-inactive').addClass('tabs-panel-active');
 628  
 629                      $('.tabs', wrapper).removeClass('tabs');
 630                      target.parent().addClass('tabs');
 631  
 632                      // select the search bar
 633                      $('.quick-search', wrapper).focus();
 634  
 635                      return false;
 636                  } else if ( target.hasClass('select-all') ) {
 637                      selectAreaMatch = /#(.*)$/.exec(e.target.href);
 638                      if ( selectAreaMatch && selectAreaMatch[1] ) {
 639                          items = $('#' + selectAreaMatch[1] + ' .tabs-panel-active .menu-item-title input');
 640                          if( items.length === items.filter(':checked').length )
 641                              items.removeAttr('checked');
 642                          else
 643                              items.attr('checked', 'checked');
 644                          return false;
 645                      }
 646                  } else if ( target.hasClass('submit-add-to-menu') ) {
 647                      api.registerChange();
 648  
 649                      if ( e.target.id && 'submit-customlinkdiv' == e.target.id )
 650                          api.addCustomLink( api.addMenuItemToBottom );
 651                      else if ( e.target.id && -1 != e.target.id.indexOf('submit-') )
 652                          $('#' + e.target.id.replace(/submit-/, '')).addSelectedToMenu( api.addMenuItemToBottom );
 653                      return false;
 654                  } else if ( target.hasClass('page-numbers') ) {
 655                      $.post( ajaxurl, e.target.href.replace(/.*\?/, '').replace(/action=([^&]*)/, '') + '&action=menu-get-metabox',
 656                          function( resp ) {
 657                              if ( -1 == resp.indexOf('replace-id') )
 658                                  return;
 659  
 660                              var metaBoxData = $.parseJSON(resp),
 661                              toReplace = document.getElementById(metaBoxData['replace-id']),
 662                              placeholder = document.createElement('div'),
 663                              wrap = document.createElement('div');
 664  
 665                              if ( ! metaBoxData['markup'] || ! toReplace )
 666                                  return;
 667  
 668                              wrap.innerHTML = metaBoxData['markup'] ? metaBoxData['markup'] : '';
 669  
 670                              toReplace.parentNode.insertBefore( placeholder, toReplace );
 671                              placeholder.parentNode.removeChild( toReplace );
 672  
 673                              placeholder.parentNode.insertBefore( wrap, placeholder );
 674  
 675                              placeholder.parentNode.removeChild( placeholder );
 676  
 677                          }
 678                      );
 679  
 680                      return false;
 681                  }
 682              });
 683          },
 684  
 685          initTabManager : function() {
 686              var fixed = $('.nav-tabs-wrapper'),
 687                  fluid = fixed.children('.nav-tabs'),
 688                  active = fluid.children('.nav-tab-active'),
 689                  tabs = fluid.children('.nav-tab'),
 690                  tabsWidth = 0,
 691                  fixedRight, fixedLeft,
 692                  arrowLeft, arrowRight, resizeTimer, css = {},
 693                  marginFluid = api.isRTL ? 'margin-right' : 'margin-left',
 694                  marginFixed = api.isRTL ? 'margin-left' : 'margin-right',
 695                  msPerPx = 2;
 696  
 697              /**
 698               * Refreshes the menu tabs.
 699               * Will show and hide arrows where necessary.
 700               * Scrolls to the active tab by default.
 701               *
 702               * @param savePosition {boolean} Optional. Prevents scrolling so
 703               *           that the current position is maintained. Default false.
 704               **/
 705              api.refreshMenuTabs = function( savePosition ) {
 706                  var fixedWidth = fixed.width(),
 707                      margin = 0, css = {};
 708                  fixedLeft = fixed.offset().left;
 709                  fixedRight = fixedLeft + fixedWidth;
 710  
 711                  if( !savePosition )
 712                      active.makeTabVisible();
 713  
 714                  // Prevent space from building up next to the last tab if there's more to show
 715                  if( tabs.last().isTabVisible() ) {
 716                      margin = fixed.width() - tabsWidth;
 717                      margin = margin > 0 ? 0 : margin;
 718                      css[marginFluid] = margin + 'px';
 719                      fluid.animate( css, 100, "linear" );
 720                  }
 721  
 722                  // Show the arrows only when necessary
 723                  if( fixedWidth > tabsWidth )
 724                      arrowLeft.add( arrowRight ).hide();
 725                  else
 726                      arrowLeft.add( arrowRight ).show();
 727              }
 728  
 729              $.fn.extend({
 730                  makeTabVisible : function() {
 731                      var t = this.eq(0), left, right, css = {}, shift = 0;
 732  
 733                      if( ! t.length ) return this;
 734  
 735                      left = t.offset().left;
 736                      right = left + t.outerWidth();
 737  
 738                      if( right > fixedRight )
 739                          shift = fixedRight - right;
 740                      else if ( left < fixedLeft )
 741                          shift = fixedLeft - left;
 742  
 743                      if( ! shift ) return this;
 744  
 745                      css[marginFluid] = "+=" + api.negateIfRTL * shift + 'px';
 746                      fluid.animate( css, Math.abs( shift ) * msPerPx, "linear" );
 747                      return this;
 748                  },
 749                  isTabVisible : function() {
 750                      var t = this.eq(0),
 751                          left = t.offset().left,
 752                          right = left + t.outerWidth();
 753                      return ( right <= fixedRight && left >= fixedLeft ) ? true : false;
 754                  }
 755              });
 756  
 757              // Find the width of all tabs
 758              tabs.each(function(){
 759                  tabsWidth += $(this).outerWidth(true);
 760              });
 761  
 762              // Set up fixed margin for overflow, unset padding
 763              css['padding'] = 0;
 764              css[marginFixed] = (-1 * tabsWidth) + 'px';
 765              fluid.css( css );
 766  
 767              // Build tab navigation
 768              arrowLeft = $('<div class="nav-tabs-arrow nav-tabs-arrow-left"><a>&laquo;</a></div>');
 769              arrowRight = $('<div class="nav-tabs-arrow nav-tabs-arrow-right"><a>&raquo;</a></div>');
 770              // Attach to the document
 771              fixed.wrap('<div class="nav-tabs-nav"/>').parent().prepend( arrowLeft ).append( arrowRight );
 772  
 773              // Set the menu tabs
 774              api.refreshMenuTabs();
 775              // Make sure the tabs reset on resize
 776              $(window).resize(function() {
 777                  if( resizeTimer ) clearTimeout(resizeTimer);
 778                  resizeTimer = setTimeout( api.refreshMenuTabs, 200);
 779              });
 780  
 781              // Build arrow functions
 782              $.each([{
 783                      arrow : arrowLeft,
 784                      next : "next",
 785                      last : "first",
 786                      operator : "+="
 787                  },{
 788                      arrow : arrowRight,
 789                      next : "prev",
 790                      last : "last",
 791                      operator : "-="
 792                  }], function(){
 793                  var that = this;
 794                  this.arrow.mousedown(function(){
 795                      var marginFluidVal = Math.abs( parseInt( fluid.css(marginFluid) ) ),
 796                          shift = marginFluidVal,
 797                          css = {};
 798  
 799                      if( "-=" == that.operator )
 800                          shift = Math.abs( tabsWidth - fixed.width() ) - marginFluidVal;
 801  
 802                      if( ! shift ) return;
 803  
 804                      css[marginFluid] = that.operator + shift + 'px';
 805                      fluid.animate( css, shift * msPerPx, "linear" );
 806                  }).mouseup(function(){
 807                      var tab, next;
 808                      fluid.stop(true);
 809                      tab = tabs[that.last]();
 810                      while( (next = tab[that.next]()) && next.length && ! next.isTabVisible() ) {
 811                          tab = next;
 812                      }
 813                      tab.makeTabVisible();
 814                  });
 815              });
 816          },
 817  
 818          eventOnClickEditLink : function(clickedEl) {
 819              var settings, item,
 820              matchedSection = /#(.*)$/.exec(clickedEl.href);
 821              if ( matchedSection && matchedSection[1] ) {
 822                  settings = $('#'+matchedSection[1]);
 823                  item = settings.parent();
 824                  if( 0 != item.length ) {
 825                      if( item.hasClass('menu-item-edit-inactive') ) {
 826                          if( ! settings.data('menu-item-data') ) {
 827                              settings.data( 'menu-item-data', settings.getItemData() );
 828                          }
 829                          settings.slideDown('fast');
 830                          item.removeClass('menu-item-edit-inactive')
 831                              .addClass('menu-item-edit-active');
 832                      } else {
 833                          settings.slideUp('fast');
 834                          item.removeClass('menu-item-edit-active')
 835                              .addClass('menu-item-edit-inactive');
 836                      }
 837                      return false;
 838                  }
 839              }
 840          },
 841  
 842          eventOnClickCancelLink : function(clickedEl) {
 843              var settings = $(clickedEl).closest('.menu-item-settings');
 844              settings.setItemData( settings.data('menu-item-data') );
 845              return false;
 846          },
 847  
 848          eventOnClickMenuSave : function(clickedEl) {
 849              var locs = '',
 850              menuName = $('#menu-name'),
 851              menuNameVal = menuName.val();
 852              // Cancel and warn if invalid menu name
 853              if( !menuNameVal || menuNameVal == menuName.attr('title') || !menuNameVal.replace(/\s+/, '') ) {
 854                  menuName.parent().addClass('form-invalid');
 855                  return false;
 856              }
 857              // Copy menu theme locations
 858              $('#nav-menu-theme-locations select').each(function() {
 859                  locs += '<input type="hidden" name="' + this.name + '" value="' + $(this).val() + '" />';
 860              });
 861              $('#update-nav-menu').append( locs );
 862              // Update menu item position data
 863              api.menuList.find('.menu-item-data-position').val( function(index) { return index + 1; } );
 864              window.onbeforeunload = null;
 865  
 866              return true;
 867          },
 868  
 869          eventOnClickMenuDelete : function(clickedEl) {
 870              // Delete warning AYS
 871              if ( confirm( navMenuL10n.warnDeleteMenu ) ) {
 872                  window.onbeforeunload = null;
 873                  return true;
 874              }
 875              return false;
 876          },
 877  
 878          eventOnClickMenuItemDelete : function(clickedEl) {
 879              var itemID = parseInt(clickedEl.id.replace('delete-', ''), 10);
 880              api.removeMenuItem( $('#menu-item-' + itemID) );
 881              api.registerChange();
 882              return false;
 883          },
 884  
 885          /**
 886           * Process the quick search response into a search result
 887           *
 888           * @param string resp The server response to the query.
 889           * @param object req The request arguments.
 890           * @param jQuery panel The tabs panel we're searching in.
 891           */
 892          processQuickSearchQueryResponse : function(resp, req, panel) {
 893              var i, matched, newID,
 894              takenIDs = {},
 895              form = document.getElementById('nav-menu-meta'),
 896              pattern = new RegExp('menu-item\\[(\[^\\]\]*)', 'g'),
 897              items = resp.match(/<li>.*<\/li>/g);
 898  
 899              if( ! items ) {
 900                  $('.categorychecklist', panel).html( '<li><p>' + navMenuL10n.noResultsFound + '</p></li>' );
 901                  $('img.waiting', panel).hide();
 902                  return;
 903              }
 904  
 905              i = items.length;
 906              while( i-- ) {
 907                  // make a unique DB ID number
 908                  matched = pattern.exec(items[i]);
 909                  if ( matched && matched[1] ) {
 910                      newID = matched[1];
 911                      while( form.elements['menu-item[' + newID + '][menu-item-type]'] || takenIDs[ newID ] ) {
 912                          newID--;
 913                      }
 914  
 915                      takenIDs[newID] = true;
 916                      if ( newID != matched[1] ) {
 917                          items[i] = items[i].replace(new RegExp('menu-item\\[' + matched[1] + '\\]', 'g'), 'menu-item[' + newID + ']');
 918                      }
 919                  }
 920              }
 921  
 922              $('.categorychecklist', panel).html( items.join('') );
 923              $('img.waiting', panel).hide();
 924          },
 925  
 926          removeMenuItem : function(el) {
 927              var children = el.childMenuItems();
 928  
 929              el.addClass('deleting').animate({
 930                      opacity : 0,
 931                      height: 0
 932                  }, 350, function() {
 933                      var ins = $('#menu-instructions');
 934                      el.remove();
 935                      children.shiftDepthClass(-1).updateParentMenuItemDBId();
 936                      if( ! ins.siblings().length )
 937                          ins.removeClass('menu-instructions-inactive');
 938                  });
 939          },
 940  
 941          depthToPx : function(depth) {
 942              return depth * api.options.menuItemDepthPerLevel;
 943          },
 944  
 945          pxToDepth : function(px) {
 946              return Math.floor(px / api.options.menuItemDepthPerLevel);
 947          }
 948  
 949      };
 950  
 951      $(document).ready(function(){ wpNavMenu.init(); });
 952  
 953  })(jQuery);