text: ﻿/*
  Copyright (c) 2003-2011, CKSource - Frederico Knabben. All rights reserved.
  For licensing, see LICENSE.html or http://ckeditor.com/license
  */
  
  (function()
  {
    var fragmentPrototype = CKEDITOR.htmlParser.fragment.prototype,
      elementPrototype = CKEDITOR.htmlParser.element.prototype;
  
    fragmentPrototype.onlyChild = elementPrototype.onlyChild = function()
    {
      var children = this.children,
        count = children.length,
        firstChild = ( count == 1 ) && children[ 0 ];
      return firstChild || null;
    };
  
    elementPrototype.removeAnyChildWithName = function( tagName )
    {
      var children = this.children,
        childs = [],
        child;
  
      for ( var i = 0; i < children.length; i++ )
      {
        child = children[ i ];
        if ( !child.name )
          continue;
  
        if ( child.name == tagName )
        {
          childs.push( child );
          children.splice( i--, 1 );
        }
        childs = childs.concat( child.removeAnyChildWithName( tagName ) );
      }
      return childs;
    };
  
    elementPrototype.getAncestor = function( tagNameRegex )
    {
      var parent = this.parent;
      while ( parent && !( parent.name && parent.name.match( tagNameRegex ) ) )
        parent = parent.parent;
      return parent;
    };
  
    fragmentPrototype.firstChild = elementPrototype.firstChild = function( evaluator )
    {
      var child;
  
      for ( var i = 0 ; i < this.children.length ; i++ )
      {
        child = this.children[ i ];
        if ( evaluator( child ) )
          return child;
        else if ( child.name )
        {
          child = child.firstChild( evaluator );
          if ( child )
            return child;
        }
      }
  
      return null;
    };
  
    // Adding a (set) of styles to the element's 'style' attributes.
    elementPrototype.addStyle = function( name, value, isPrepend )
    {
      var styleText, addingStyleText = '';
      // name/value pair.
      if ( typeof value == 'string' )
        addingStyleText += name + ':' + value + ';';
      else
      {
        // style literal.
        if ( typeof name == 'object' )
        {
          for ( var style in name )
          {
            if ( name.hasOwnProperty( style ) )
              addingStyleText += style + ':' + name[ style ] + ';';
          }
        }
        // raw style text form.
        else
          addingStyleText += name;
  
        isPrepend = value;
      }
  
      if ( !this.attributes )
        this.attributes = {};
  
      styleText = this.attributes.style || '';
  
      styleText = ( isPrepend ?
                    [ addingStyleText, styleText ]
              : [ styleText, addingStyleText ] ).join( ';' );
  
      this.attributes.style = styleText.replace( /^;|;(?=;)/, '' );
    };
  
    /**
     * Return the DTD-valid parent tag names of the specified one.
     * @param tagName
     */
    CKEDITOR.dtd.parentOf = function( tagName )
    {
      var result = {};
      for ( var tag in this )
      {
        if ( tag.indexOf( '$' ) == -1 && this[ tag ][ tagName ] )
          result[ tag ] = 1;
      }
      return result;
    };
  
    // 1. move consistent list item styles up to list root.
    // 2. clear out unnecessary list item numbering.
    function postProcessList( list )
    {
      var children = list.children,
        child,
        attrs,
        count = list.children.length,
        match,
        mergeStyle,
        styleTypeRegexp = /list-style-type:(.*?)(?:;|$)/,
        stylesFilter = CKEDITOR.plugins.pastefromword.filters.stylesFilter;
  
      attrs = list.attributes;
      if ( styleTypeRegexp.exec( attrs.style ) )
        return;
  
      for ( var i = 0; i < count; i++ )
      {
        child = children[ i ];
  
        if ( child.attributes.value && Number( child.attributes.value ) == i + 1 )
          delete child.attributes.value;
  
        match = styleTypeRegexp.exec( child.attributes.style );
  
        if ( match )
        {
          if ( match[ 1 ] == mergeStyle || !mergeStyle )
            mergeStyle = match[ 1 ];
          else
          {
            mergeStyle = null;
            break;
          }
        }
      }
  
      if ( mergeStyle )
      {
        for ( i = 0; i < count; i++ )
        {
          attrs = children[ i ].attributes;
          attrs.style && ( attrs.style = stylesFilter( [ [ 'list-style-type'] ] )( attrs.style ) || '' );
        }
  
        list.addStyle( 'list-style-type', mergeStyle );
      }
    }
  
    var cssLengthRelativeUnit = /^([.\d]*)+(em|ex|px|gd|rem|vw|vh|vm|ch|mm|cm|in|pt|pc|deg|rad|ms|s|hz|khz){1}?/i;
    var emptyMarginRegex = /^(?:\b0[^\s]*\s*){1,4}$/;    // e.g. 0px 0pt 0px
    var romanLiternalPattern = '^m{0,4}(cm|cd|d?c{0,3})(xc|xl|l?x{0,3})(ix|iv|v?i{0,3})$',
      lowerRomanLiteralRegex = new RegExp( romanLiternalPattern ),
      upperRomanLiteralRegex = new RegExp( romanLiternalPattern.toUpperCase() );
  
    var orderedPatterns = { 'decimal' : /\d+/, 'lower-roman': lowerRomanLiteralRegex, 'upper-roman': upperRomanLiteralRegex, 'lower-alpha' : /^[a-z]+$/, 'upper-alpha': /^[A-Z]+$/ },
      unorderedPatterns = { 'disc' : /[l\u00B7\u2002]/, 'circle' : /[\u006F\u00D8]/,'square' : /[\u006E\u25C6]/},
      listMarkerPatterns = { 'ol' : orderedPatterns, 'ul' : unorderedPatterns },
      romans = [ [1000, 'M'], [900, 'CM'], [500, 'D'], [400, 'CD'], [100, 'C'], [90, 'XC'], [50, 'L'], [40, 'XL'], [10, 'X'], [9, 'IX'], [5, 'V'], [4, 'IV'], [1, 'I'] ],
      alpahbets = "ABCDEFGHIJKLMNOPQRSTUVWXYZ";
  
    // Convert roman numbering back to decimal.
    function fromRoman( str )
     {
       str = str.toUpperCase();
       var l = romans.length, retVal = 0;
       for ( var i = 0; i < l; ++i )
       {
         for ( var j = romans[i], k = j[1].length; str.substr( 0, k ) == j[1]; str = str.substr( k ) )
           retVal += j[ 0 ];
       }
       return retVal;
     }
  
    // Convert alphabet numbering back to decimal.
    function fromAlphabet( str )
    {
      str = str.toUpperCase();
      var l = alpahbets.length, retVal = 1;
      for ( var x = 1; str.length > 0; x *= l )
      {
        retVal += alpahbets.indexOf( str.charAt( str.length - 1 ) ) * x;
        str = str.substr( 0, str.length - 1 );
      }
      return retVal;
    }
  
    var listBaseIndent = 0,
      previousListItemMargin = null,
      previousListId;
  
    var plugin = ( CKEDITOR.plugins.pastefromword =
    {
      utils :
      {
        // Create a <cke:listbullet> which indicate an list item type.
        createListBulletMarker : function ( bullet, bulletText )
        {
          var marker = new CKEDITOR.htmlParser.element( 'cke:listbullet' );
          marker.attributes = { 'cke:listsymbol' : bullet[ 0 ] };
          marker.add( new CKEDITOR.htmlParser.text( bulletText ) );
          return marker;
        },
  
        isListBulletIndicator : function( element )
        {
          var styleText = element.attributes && element.attributes.style;
          if ( /mso-list\s*:\s*Ignore/i.test( styleText ) )
            return true;
        },
  
        isContainingOnlySpaces : function( element )
        {
          var text;
          return ( ( text = element.onlyChild() )
                && ( /^(:?\s|&nbsp;)+$/ ).test( text.value ) );
        },
  
        resolveList : function( element )
        {
          // <cke:listbullet> indicate a list item.
          var attrs = element.attributes,
            listMarker;
  
          if ( ( listMarker = element.removeAnyChildWithName( 'cke:listbullet' ) )
              && listMarker.length
              && ( listMarker = listMarker[ 0 ] ) )
          {
            element.name = 'cke:li';
  
            if ( attrs.style )
            {
              attrs.style = plugin.filters.stylesFilter(
                  [
                    // Text-indent is not representing list item level any more.
                    [ 'text-indent' ],
                    [ 'line-height' ],
                    // First attempt is to resolve indent level from on a constant margin increment.
                    [ ( /^margin(:?-left)?$/ ), null, function( margin )
                    {
                      // Deal with component/short-hand form.
                      var values = margin.split( ' ' );
                      margin = CKEDITOR.tools.convertToPx( values[ 3 ] || values[ 1 ] || values [ 0 ] );
  
                      // Figure out the indent unit by checking the first time of incrementation.
                      if ( !listBaseIndent && previousListItemMargin !== null && margin > previousListItemMargin )
                        listBaseIndent = margin - previousListItemMargin;
  
                      previousListItemMargin = margin;
  
                      attrs[ 'cke:indent' ] = listBaseIndent && ( Math.ceil( margin / listBaseIndent ) + 1 ) || 1;
                    } ],
                    // The best situation: "mso-list:l0 level1 lfo2" tells the belonged list root, list item indentation, etc.
                    [ ( /^mso-list$/ ), null, function( val )
                    {
                      val = val.split( ' ' );
                      var listId = Number( val[ 0 ].match( /\d+/ ) ),
                        indent = Number( val[ 1 ].match( /\d+/ ) );
  
                      if ( indent == 1 )
                      {
                        listId !== previousListId && ( attrs[ 'cke:reset' ] = 1 );
                        previousListId = listId;
                      }
                      attrs[ 'cke:indent' ] = indent;
                    } ]
                  ] )( attrs.style, element ) || '';
            }
  
            // First level list item might be presented without a margin.
  
  
            // In case all above doesn't apply.
            if ( !attrs[ 'cke:indent' ] )
            {
              previousListItemMargin = 0;
              attrs[ 'cke:indent' ] = 1;
            }
  
            // Inherit attributes from bullet.
            CKEDITOR.tools.extend( attrs, listMarker.attributes );
            return true;
          }
          // Current list disconnected.
          else
            previousListId = previousListItemMargin = listBaseIndent = null;
  
          return false;
        },
  
        // Providing a shorthand style then retrieve one or more style component values.
        getStyleComponents : ( function()
        {
          var calculator = CKEDITOR.dom.element.createFromHtml(
                  '<div style="position:absolute;left:-9999px;top:-9999px;"></div>',
                  CKEDITOR.document );
          CKEDITOR.document.getBody().append( calculator );
  
          return function( name, styleValue, fetchList )
          {
            calculator.setStyle( name, styleValue );
            var styles = {},
              count = fetchList.length;
            for ( var i = 0; i < count; i++ )
              styles[ fetchList[ i ] ]  = calculator.getStyle( fetchList[ i ] );
  
            return styles;
          };
        } )(),
  
        listDtdParents : CKEDITOR.dtd.parentOf( 'ol' )
      },
  
      filters :
      {
          // Transform a normal list into flat list items only presentation.
          // E.g. <ul><li>level1<ol><li>level2</li></ol></li> =>
          // <cke:li cke:listtype="ul" cke:indent="1">level1</cke:li>
          // <cke:li cke:listtype="ol" cke:indent="2">level2</cke:li>
          flattenList : function( element, level )
          {
            level = typeof level == 'number' ? level : 1;
  
            var  attrs = element.attributes,
              listStyleType;
  
            // All list items are of the same type.
            switch ( attrs.type )
            {
              case 'a' :
                listStyleType = 'lower-alpha';
                break;
              case '1' :
                listStyleType = 'decimal';
                break;
              // TODO: Support more list style type from MS-Word.
            }
  
            var children = element.children,
              child;
  
            for ( var i = 0; i < children.length; i++ )
            {
              child = children[ i ];
  
              if ( child.name in CKEDITOR.dtd.$listItem )
              {
                var attributes = child.attributes,
                  listItemChildren = child.children,
                  count = listItemChildren.length,
                  last = listItemChildren[ count - 1 ];
  
                // Move out nested list.
                if ( last.name in CKEDITOR.dtd.$list )
                {
                  element.add( last, i + 1 );
  
                  // Remove the parent list item if it's just a holder.
                  if ( !--listItemChildren.length )
                    children.splice( i--, 1 );
                }
  
                child.name = 'cke:li';
  
                // Inherit numbering from list root on the first list item.
                attrs.start && !i && ( attributes.value = attrs.start );
  
                plugin.filters.stylesFilter(
                  [
                    [ 'tab-stops', null, function( val )
                    {
                      var margin = val.split( ' ' )[ 1 ].match( cssLengthRelativeUnit );
                      margin && ( previousListItemMargin = CKEDITOR.tools.convertToPx( margin[ 0 ] ) );
                    } ],
                    ( level == 1 ? [ 'mso-list', null, function( val )
                    {
                      val = val.split( ' ' );
                      var listId = Number( val[ 0 ].match( /\d+/ ) );
                      listId !== previousListId && ( attributes[ 'cke:reset' ] = 1 );
                      previousListId = listId;
                     } ] : null )
                  ] )( attributes.style );
  
                attributes[ 'cke:indent' ] = level;
                attributes[ 'cke:listtype' ] = element.name;
                attributes[ 'cke:list-style-type' ] = listStyleType;
              }
              // Flatten sub list.
              else if ( child.name in CKEDITOR.dtd.$list )
              {
                // Absorb sub list children.
                arguments.callee.apply( this, [ child, level + 1 ] );
                children = children.slice( 0, i ).concat( child.children ).concat( children.slice( i + 1 ) );
                element.children = [];
                for ( var j = 0, num = children.length; j < num ; j++ )
                  element.add( children[ j ] );
              }
            }
  
            delete element.name;
  
            // We're loosing tag name here, signalize this element as a list.
            attrs[ 'cke:list' ] = 1;
          },
  
          /**
           *  Try to collect all list items among the children and establish one
           *  or more HTML list structures for them.
           * @param element
           */
          assembleList : function( element )
          {
            var children = element.children, child,
                listItem,   // The current processing cke:li element.
                listItemAttrs,
                listItemIndent, // Indent level of current list item.
                lastIndent,
                lastListItem, // The previous one just been added to the list.
                list, // Current staging list and it's parent list if any.
                openedLists = [],
                previousListStyleType,
                previousListType;
  
            // Properties of the list item are to be resolved from the list bullet.
            var bullet,
              listType,
              listStyleType,
              itemNumeric;
  
            for ( var i = 0; i < children.length; i++ )
            {
              child = children[ i ];
  
              if ( 'cke:li' == child.name )
              {
                child.name = 'li';
                listItem = child;
                listItemAttrs = listItem.attributes;
                bullet = listItemAttrs[ 'cke:listsymbol' ];
                bullet = bullet && bullet.match( /^(?:[(]?)([^\s]+?)([.)]?)$/ );
                listType = listStyleType = itemNumeric = null;
  
                if ( listItemAttrs[ 'cke:ignored' ] )
                {
                  children.splice( i--, 1 );
                  continue;
                }
  
  
                // This's from a new list root.
                listItemAttrs[ 'cke:reset' ] && ( list = lastIndent = lastListItem = null );
  
                // List item indent level might come from a real list indentation or
                // been resolved from a pseudo list item's margin value, even get
                // no indentation at all.
                listItemIndent = Number( listItemAttrs[ 'cke:indent' ] );
  
                // We're moving out of the current list, cleaning up.
                if ( listItemIndent != lastIndent )
                  previousListType = previousListStyleType = null;
  
                // List type and item style are already resolved.
                if ( !bullet )
                {
                  listType = listItemAttrs[ 'cke:listtype' ] || 'ol';
                  listStyleType = listItemAttrs[ 'cke:list-style-type' ];
                }
                else
                {
                  // Probably share the same list style type with previous list item,
                  // give it priority to avoid ambiguous between C(Alpha) and C.(Roman).
                  if ( previousListType && listMarkerPatterns[ previousListType ] [ previousListStyleType ].test( bullet[ 1 ] ) )
                  {
                    listType = previousListType;
                    listStyleType = previousListStyleType;
                  }
                  else
                  {
                    for ( var type in listMarkerPatterns )
                    {
                      for ( var style in listMarkerPatterns[ type ] )
                      {
                        if ( listMarkerPatterns[ type ][ style ].test( bullet[ 1 ] ) )
                        {
                          // Small numbering has higher priority, when dealing with ambiguous
                          // between C(Alpha) and C.(Roman).
                          if ( type == 'ol' && ( /alpha|roman/ ).test( style ) )
                          {
                            var num = /roman/.test( style ) ? fromRoman( bullet[ 1 ] ) : fromAlphabet( bullet[ 1 ] );
                            if ( !itemNumeric || num < itemNumeric )
                            {
                              itemNumeric = num;
                              listType = type;
                              listStyleType = style;
                            }
                          }
                          else
                          {
                            listType = type;
                            listStyleType = style;
                            break;
                          }
                        }
                      }
                    }
                  }
  
                  // Simply use decimal/disc for the rest forms of unrepresentable
                  // numerals, e.g. Chinese..., but as long as there a second part
                  // included, it has a bigger chance of being a order list ;)
                  !listType && ( listType = bullet[ 2 ] ? 'ol' : 'ul' );
                }
  
                previousListType = listType;
                previousListStyleType = listStyleType || ( listType == 'ol' ? 'decimal' : 'disc' );
                if ( listStyleType && listStyleType != ( listType == 'ol' ? 'decimal' : 'disc' ) )
                  listItem.addStyle( 'list-style-type', listStyleType );
  
                // Figure out start numbering.
                if ( listType == 'ol' && bullet )
                {
                  switch ( listStyleType )
                  {
                    case 'decimal' :
                      itemNumeric = Number( bullet[ 1 ] );
                      break;
                    case 'lower-roman':
                    case 'upper-roman':
                      itemNumeric = fromRoman( bullet[ 1 ] );
                      break;
                    case 'lower-alpha':
                    case 'upper-alpha':
                      itemNumeric = fromAlphabet( bullet[ 1 ] );
                      break;
                  }
  
                  // Always create the numbering, swipe out unnecessary ones later.
                  listItem.attributes.value = itemNumeric;
                }
  
                // Start the list construction.
                if ( !list )
                {
                  openedLists.push( list = new CKEDITOR.htmlParser.element( listType ) );
                  list.add( listItem );
                  children[ i ] = list;
                }
                else
                {
                  if ( listItemIndent > lastIndent )
                  {
                    openedLists.push( list = new CKEDITOR.htmlParser.element( listType ) );
                    list.add( listItem );
                    lastListItem.add( list );
                  }
                  else if ( listItemIndent < lastIndent )
                  {
                    // There might be a negative gap between two list levels. (#4944)
                    var diff = lastIndent - listItemIndent,
                        parent;
                    while ( diff-- && ( parent = list.parent ) )
                      list = parent.parent;
  
                    list.add( listItem );
                  }
                  else
                    list.add( listItem );
  
                  children.splice( i--, 1 );
                }
  
                lastListItem = listItem;
                lastIndent = listItemIndent;
              }
              else if ( list )
                list = lastIndent = lastListItem = null;
            }
  
            for ( i = 0; i < openedLists.length; i++ )
              postProcessList( openedLists[ i ] );
  
            list = lastIndent = lastListItem = previousListId = previousListItemMargin = listBaseIndent = null;
          },
  
          /**
           * A simple filter which always rejecting.
           */
          falsyFilter : function( value )
          {
            return false;
          },
  
          /**
           * A filter dedicated on the 'style' attribute filtering, e.g. dropping/replacing style properties.
           * @param styles {Array} in form of [ styleNameRegexp, styleValueRegexp,
           *  newStyleValue/newStyleGenerator, newStyleName ] where only the first
           *  parameter is mandatory.
           * @param whitelist {Boolean} Whether the {@param styles} will be considered as a white-list.
           */
          stylesFilter : function( styles, whitelist )
          {
            return function( styleText, element )
            {
               var rules = [];
              // html-encoded quote might be introduced by 'font-family'
              // from MS-Word which confused the following regexp. e.g.
              //'font-family: &quot;Lucida, Console&quot;'
              ( styleText || '' )
                .replace( /&quot;/g, '"' )
                .replace( /\s*([^ :;]+)\s*:\s*([^;]+)\s*(?=;|$)/g,
                   function( match, name, value )
                   {
                     name = name.toLowerCase();
                     name == 'font-family' && ( value = value.replace( /["']/g, '' ) );
  
                     var namePattern,
                       valuePattern,
                       newValue,
                       newName;
                     for ( var i = 0 ; i < styles.length; i++ )
                     {
                      if ( styles[ i ] )
                      {
                        namePattern = styles[ i ][ 0 ];
                        valuePattern = styles[ i ][ 1 ];
                        newValue = styles[ i ][ 2 ];
                        newName = styles[ i ][ 3 ];
  
                        if ( name.match( namePattern )
                           && ( !valuePattern || value.match( valuePattern ) ) )
                        {
                          name = newName || name;
                          whitelist && ( newValue = newValue || value );
  
                          if ( typeof newValue == 'function' )
                            newValue = newValue( value, element, name );
  
                          // Return an couple indicate both name and value
                          // changed.
                          if ( newValue && newValue.push )
                            name = newValue[ 0 ], newValue = newValue[ 1 ];
  
                          if ( typeof newValue == 'string' )
                            rules.push( [ name, newValue ] );
                          return;
                        }
                      }
                     }
  
                     !whitelist && rules.push( [ name, value ] );
  
                   });
  
              for ( var i = 0 ; i < rules.length ; i++ )
                 rules[ i ] = rules[ i ].join( ':' );
              return rules.length ?
                       ( rules.join( ';' ) + ';' ) : false;
             };
          },
  
          /**
           * Migrate the element by decorate styles on it.
           * @param styleDefiniton
           * @param variables
           */
          elementMigrateFilter : function ( styleDefiniton, variables )
          {
            return function( element )
              {
                var styleDef =
                    variables ?
                      new CKEDITOR.style( styleDefiniton, variables )._.definition
                      : styleDefiniton;
                element.name = styleDef.element;
                CKEDITOR.tools.extend( element.attributes, CKEDITOR.tools.clone( styleDef.attributes ) );
                element.addStyle( CKEDITOR.style.getStyleText( styleDef ) );
              };
          },
  
          /**
           * Migrate styles by creating a new nested stylish element.
           * @param styleDefinition
           */
          styleMigrateFilter : function( styleDefinition, variableName )
          {
  
            var elementMigrateFilter = this.elementMigrateFilter;
            return function( value, element )
            {
              // Build an stylish element first.
              var styleElement = new CKEDITOR.htmlParser.element( null ),
                variables = {};
  
              variables[ variableName ] = value;
              elementMigrateFilter( styleDefinition, variables )( styleElement );
              // Place the new element inside the existing span.
              styleElement.children = element.children;
              element.children = [ styleElement ];
            };
          },
  
          /**
           * A filter which remove cke-namespaced-attribute on
           * all none-cke-namespaced elements.
           * @param value
           * @param element
           */
          bogusAttrFilter : function( value, element )
          {
            if ( element.name.indexOf( 'cke:' ) == -1 )
              return false;
          },
  
          /**
           * A filter which will be used to apply inline css style according the stylesheet
           * definition rules, is generated lazily when filtering.
           */
          applyStyleFilter : null
  
        },
  
      getRules : function( editor )
      {
        var dtd = CKEDITOR.dtd,
          blockLike = CKEDITOR.tools.extend( {}, dtd.$block, dtd.$listItem, dtd.$tableContent ),
          config = editor.config,
          filters = this.filters,
          falsyFilter = filters.falsyFilter,
          stylesFilter = filters.stylesFilter,
          elementMigrateFilter = filters.elementMigrateFilter,
          styleMigrateFilter = CKEDITOR.tools.bind( this.filters.styleMigrateFilter, this.filters ),
          createListBulletMarker = this.utils.createListBulletMarker,
          flattenList = filters.flattenList,
          assembleList = filters.assembleList,
          isListBulletIndicator = this.utils.isListBulletIndicator,
          containsNothingButSpaces = this.utils.isContainingOnlySpaces,
          resolveListItem = this.utils.resolveList,
          convertToPx = function( value )
            {
              value = CKEDITOR.tools.convertToPx( value );
              return isNaN( value ) ? value : value + 'px';
            },
          getStyleComponents = this.utils.getStyleComponents,
          listDtdParents = this.utils.listDtdParents,
          removeFontStyles = config.pasteFromWordRemoveFontStyles !== false,
          removeStyles = config.pasteFromWordRemoveStyles !== false;
  
        return {
  
          elementNames :
          [
            // Remove script, meta and link elements.
            [ ( /meta|link|script/ ), '' ]
          ],
  
          root : function( element )
          {
            element.filterChildren();
            assembleList( element );
          },
  
          elements :
          {
            '^' : function( element )
            {
              // Transform CSS style declaration to inline style.
              var applyStyleFilter;
              if ( CKEDITOR.env.gecko && ( applyStyleFilter = filters.applyStyleFilter ) )
                applyStyleFilter( element );
            },
  
            $ : function( element )
            {
              var tagName = element.name || '',
                attrs = element.attributes;
  
              // Convert length unit of width/height on blocks to
              // a more editor-friendly way (px).
              if ( tagName in blockLike
                && attrs.style )
              {
                attrs.style = stylesFilter(
                      [ [ ( /^(:?width|height)$/ ), null, convertToPx ] ] )( attrs.style ) || '';
              }
  
              // Processing headings.
              if ( tagName.match( /h\d/ ) )
              {
                element.filterChildren();
                // Is the heading actually a list item?
                if ( resolveListItem( element ) )
                  return;
  
                // Adapt heading styles to editor's convention.
                elementMigrateFilter( config[ 'format_' + tagName ] )( element );
              }
              // Remove inline elements which contain only empty spaces.
              else if ( tagName in dtd.$inline )
              {
                element.filterChildren();
                if ( containsNothingButSpaces( element ) )
                  delete element.name;
              }
              // Remove element with ms-office namespace,
              // with it's content preserved, e.g. 'o:p'.
              else if ( tagName.indexOf( ':' ) != -1
                   && tagName.indexOf( 'cke' ) == -1 )
              {
                element.filterChildren();
  
                // Restore image real link from vml.
                if ( tagName == 'v:imagedata' )
                {
                  var href = element.attributes[ 'o:href' ];
                  if ( href )
                    element.attributes.src = href;
                  element.name = 'img';
                  return;
                }
                delete element.name;
              }
  
              // Assembling list items into a whole list.
              if ( tagName in listDtdParents )
              {
                element.filterChildren();
                assembleList( element );
              }
            },
  
            // We'll drop any style sheet, but Firefox conclude
            // certain styles in a single style element, which are
            // required to be changed into inline ones.
            'style' : function( element )
            {
              if ( CKEDITOR.env.gecko )
              {
                // Grab only the style definition section.
                var styleDefSection = element.onlyChild().value.match( /\/\* Style Definitions \*\/([\s\S]*?)\/\*/ ),
                  styleDefText = styleDefSection && styleDefSection[ 1 ],
                  rules = {}; // Storing the parsed result.
  
                if ( styleDefText )
                {
                  styleDefText
                    // Remove line-breaks.
                    .replace(/[\n\r]/g,'')
                    // Extract selectors and style properties.
                    .replace( /(.+?)\{(.+?)\}/g,
                      function( rule, selectors, styleBlock )
                      {
                        selectors = selectors.split( ',' );
                        var length = selectors.length, selector;
                        for ( var i = 0; i < length; i++ )
                        {
                          // Assume MS-Word mostly generate only simple
                          // selector( [Type selector][Class selector]).
                          CKEDITOR.tools.trim( selectors[ i ] )
                                  .replace( /^(\w+)(\.[\w-]+)?$/g,
                          function( match, tagName, className )
                          {
                            tagName = tagName || '*';
                            className = className.substring( 1, className.length );
  
                            // Reject MS-Word Normal styles.
                            if ( className.match( /MsoNormal/ ) )
                              return;
  
                            if ( !rules[ tagName ] )
                              rules[ tagName ] = {};
                            if ( className )
                              rules[ tagName ][ className ] = styleBlock;
                            else
                              rules[ tagName ] = styleBlock;
                          } );
                        }
                      });
  
                  filters.applyStyleFilter = function( element )
                  {
                    var name = rules[ '*' ] ? '*' : element.name,
                      className = element.attributes && element.attributes[ 'class' ],
                      style;
                    if ( name in rules )
                    {
                      style = rules[ name ];
                      if ( typeof style == 'object' )
                        style = style[ className ];
                      // Maintain style rules priorities.
                      style && element.addStyle( style, true );
                    }
                  };
                }
              }
              return false;
            },
  
            'p' : function( element )
            {
              // This's a fall-back approach to recognize list item in FF3.6,
              // as it's not perfect as not all list style (e.g. "heading list") is shipped
              // with this pattern. (#6662)
              if ( /MsoListParagraph/.exec( element.attributes[ 'class' ] ) )
              {
                var bulletText = element.firstChild( function( node )
                {
                  return node.type == CKEDITOR.NODE_TEXT && !containsNothingButSpaces( node.parent );
                });
                var bullet = bulletText && bulletText.parent,
                  bulletAttrs = bullet && bullet.attributes;
                bulletAttrs && !bulletAttrs.style && ( bulletAttrs.style = 'mso-list: Ignore;' );
              }
  
              element.filterChildren();
  
              // Is the paragraph actually a list item?
              if ( resolveListItem( element ) )
                return;
  
              // Adapt paragraph formatting to editor's convention
              // according to enter-mode.
              if ( config.enterMode == CKEDITOR.ENTER_BR )
              {
                // We suffer from attribute/style lost in this situation.
                delete element.name;
                element.add( new CKEDITOR.htmlParser.element( 'br' ) );
              }
              else
                elementMigrateFilter( config[ 'format_' + ( config.enterMode == CKEDITOR.ENTER_P ? 'p' : 'div' ) ] )( element );
            },
  
            'div' : function( element )
            {
              // Aligned table with no text surrounded is represented by a wrapper div, from which
              // table cells inherit as text-align styles, which is wrong.
              // Instead we use a clear-float div after the table to properly achieve the same layout.
              var singleChild = element.onlyChild();
              if ( singleChild && singleChild.name == 'table' )
              {
                var attrs = element.attributes;
                singleChild.attributes = CKEDITOR.tools.extend( singleChild.attributes, attrs );
                attrs.style && singleChild.addStyle( attrs.style );
  
                var clearFloatDiv = new CKEDITOR.htmlParser.element( 'div' );
                clearFloatDiv.addStyle( 'clear' ,'both' );
                element.add( clearFloatDiv );
                delete element.name;
              }
            },
  
            'td' : function ( element )
            {
              // 'td' in 'thead' is actually <th>.
              if ( element.getAncestor( 'thead') )
                element.name = 'th';
            },
  
            // MS-Word sometimes present list as a mixing of normal list
            // and pseudo-list, normalize the previous ones into pseudo form.
            'ol' : flattenList,
            'ul' : flattenList,
            'dl' : flattenList,
  
            'font' : function( element )
            {
              // Drop the font tag if it comes from list bullet text.
              if ( isListBulletIndicator( element.parent ) )
              {
                delete element.name;
                return;
              }
  
              element.filterChildren();
  
              var attrs = element.attributes,
                styleText = attrs.style,
                parent = element.parent;
  
              if ( 'font' == parent.name )     // Merge nested <font> tags.
              {
                CKEDITOR.tools.extend( parent.attributes,
                    element.attributes );
                styleText && parent.addStyle( styleText );
                delete element.name;
              }
              // Convert the merged into a span with all attributes preserved.
              else
              {
                styleText = styleText || '';
                // IE's having those deprecated attributes, normalize them.
                if ( attrs.color )
                {
                  attrs.color != '#000000' && ( styleText += 'color:' + attrs.color + ';' );
                  delete attrs.color;
                }
                if ( attrs.face )
                {
                  styleText += 'font-family:' + attrs.face + ';';
                  delete attrs.face;
                }
                // TODO: Mapping size in ranges of xx-small,
                // x-small, small, medium, large, x-large, xx-large.
                if ( attrs.size )
                {
                  styleText += 'font-size:' +
                               ( attrs.size > 3 ? 'large'
                                   : ( attrs.size < 3 ? 'small' : 'medium' ) ) + ';';
                  delete attrs.size;
                }
  
                element.name = 'span';
                element.addStyle( styleText );
              }
            },
  
            'span' : function( element )
            {
              // Remove the span if it comes from list bullet text.
              if ( isListBulletIndicator( element.parent ) )
                return false;
  
              element.filterChildren();
              if ( containsNothingButSpaces( element ) )
              {
                delete element.name;
                return null;
              }
  
              // List item bullet type is supposed to be indicated by
              // the text of a span with style 'mso-list : Ignore' or an image.
              if ( isListBulletIndicator( element ) )
              {
                var listSymbolNode = element.firstChild( function( node )
                {
                  return node.value || node.name == 'img';
                });
  
                var listSymbol =  listSymbolNode && ( listSymbolNode.value || 'l.' ),
                  listType = listSymbol && listSymbol.match( /^(?:[(]?)([^\s]+?)([.)]?)$/ );
  
                if ( listType )
                {
                  var marker = createListBulletMarker( listType, listSymbol );
                  // Some non-existed list items might be carried by an inconsequential list, indicate by "mso-hide:all/display:none",
                  // those are to be removed later, now mark it with "cke:ignored".
                  var ancestor = element.getAncestor( 'span' );
                  if ( ancestor && (/ mso-hide:\s*all|display:\s*none /).test( ancestor.attributes.style ) )
                    marker.attributes[ 'cke:ignored' ] = 1;
                  return marker;
                }
              }
  
              // Update the src attribute of image element with href.
              var children = element.children,
                attrs = element.attributes,
                styleText = attrs && attrs.style,
                firstChild = children && children[ 0 ];
  
              // Assume MS-Word mostly carry font related styles on <span>,
              // adapting them to editor's convention.
              if ( styleText )
              {
                attrs.style = stylesFilter(
                    [
                      // Drop 'inline-height' style which make lines overlapping.
                      [ 'line-height' ],
                      [ ( /^font-family$/ ), null, !removeFontStyles ? styleMigrateFilter( config[ 'font_style' ], 'family' ) : null ] ,
                      [ ( /^font-size$/ ), null, !removeFontStyles ? styleMigrateFilter( config[ 'fontSize_style' ], 'size' ) : null ] ,
                      [ ( /^color$/ ), null, !removeFontStyles ? styleMigrateFilter( config[ 'colorButton_foreStyle' ], 'color' ) : null ] ,
                      [ ( /^background-color$/ ), null, !removeFontStyles ? styleMigrateFilter( config[ 'colorButton_backStyle' ], 'color' ) : null ]
                    ] )( styleText, element ) || '';
              }
  
              return null;
            },
  
            // Migrate basic style formats to editor configured ones.
            'b' : elementMigrateFilter( config[ 'coreStyles_bold' ] ),
            'i' : elementMigrateFilter( config[ 'coreStyles_italic' ] ),
            'u' : elementMigrateFilter( config[ 'coreStyles_underline' ] ),
            's' : elementMigrateFilter( config[ 'coreStyles_strike' ] ),
            'sup' : elementMigrateFilter( config[ 'coreStyles_superscript' ] ),
            'sub' : elementMigrateFilter( config[ 'coreStyles_subscript' ] ),
            // Editor doesn't support anchor with content currently (#3582),
            // drop such anchors with content preserved.
            'a' : function( element )
            {
              var attrs = element.attributes;
              if ( attrs && !attrs.href && attrs.name )
                delete element.name;
              else if ( CKEDITOR.env.webkit && attrs.href && attrs.href.match( /file:\/\/\/[\S]+#/i ) )
                attrs.href = attrs.href.replace( /file:\/\/\/[^#]+/i,'' );
            },
            'cke:listbullet' : function( element )
            {
              if ( element.getAncestor( /h\d/ ) && !config.pasteFromWordNumberedHeadingToList )
                delete element.name;
            }
          },
  
          attributeNames :
          [
            // Remove onmouseover and onmouseout events (from MS Word comments effect)
            [ ( /^onmouse(:?out|over)/ ), '' ],
            // Onload on image element.
            [ ( /^onload$/ ), '' ],
            // Remove office and vml attribute from elements.
            [ ( /(?:v|o):\w+/ ), '' ],
            // Remove lang/language attributes.
            [ ( /^lang/ ), '' ]
          ],
  
          attributes :
          {
            'style' : stylesFilter(
            removeStyles ?
            // Provide a white-list of styles that we preserve, those should
            // be the ones that could later be altered with editor tools.
            [
              // Leave list-style-type
              [ ( /^list-style-type$/ ), null ],
  
              // Preserve margin-left/right which used as default indent style in the editor.
              [ ( /^margin$|^margin-(?!bottom|top)/ ), null, function( value, element, name )
                {
                  if ( element.name in { p : 1, div : 1 } )
                  {
                    var indentStyleName = config.contentsLangDirection == 'ltr' ?
                        'margin-left' : 'margin-right';
  
                    // Extract component value from 'margin' shorthand.
                    if ( name == 'margin' )
                    {
                      value = getStyleComponents( name, value,
                          [ indentStyleName ] )[ indentStyleName ];
                    }
                    else if ( name != indentStyleName )
                      return null;
  
                    if ( value && !emptyMarginRegex.test( value ) )
                      return [ indentStyleName, value ];
                  }
  
                  return null;
                } ],
  
              // Preserve clear float style.
              [ ( /^clear$/ ) ],
  
              [ ( /^border.*|margin.*|vertical-align|float$/ ), null,
                function( value, element )
                {
                  if ( element.name == 'img' )
                    return value;
                } ],
  
              [ (/^width|height$/ ), null,
                function( value, element )
                {
                  if ( element.name in { table : 1, td : 1, th : 1, img : 1 } )
                    return value;
                } ]
            ] :
            // Otherwise provide a black-list of styles that we remove.
            [
              [ ( /^mso-/ ) ],
              // Fixing color values.
              [ ( /-color$/ ), null, function( value )
              {
                if ( value == 'transparent' )
                  return false;
                if ( CKEDITOR.env.gecko )
                  return value.replace( /-moz-use-text-color/g, 'transparent' );
              } ],
              // Remove empty margin values, e.g. 0.00001pt 0em 0pt
              [ ( /^margin$/ ), emptyMarginRegex ],
              [ 'text-indent', '0cm' ],
              [ 'page-break-before' ],
              [ 'tab-stops' ],
              [ 'display', 'none' ],
              removeFontStyles ? [ ( /font-?/ ) ] : null
            ], removeStyles ),
  
            // Prefer width styles over 'width' attributes.
            'width' : function( value, element )
            {
              if ( element.name in dtd.$tableContent )
                return false;
            },
            // Prefer border styles over table 'border' attributes.
            'border' : function( value, element )
            {
              if ( element.name in dtd.$tableContent )
                return false;
            },
  
            // Only Firefox carry style sheet from MS-Word, which
            // will be applied by us manually. For other browsers
            // the css className is useless.
            'class' : falsyFilter,
  
            // MS-Word always generate 'background-color' along with 'bgcolor',
            // simply drop the deprecated attributes.
            'bgcolor' : falsyFilter,
  
            // Deprecate 'valign' attribute in favor of 'vertical-align'.
            'valign' : removeStyles ? falsyFilter : function( value, element )
            {
              element.addStyle( 'vertical-align', value );
              return false;
            }
          },
  
          // Fore none-IE, some useful data might be buried under these IE-conditional
          // comments where RegExp were the right approach to dig them out where usual approach
          // is transform it into a fake element node which hold the desired data.
          comment :
            !CKEDITOR.env.ie ?
              function( value, node )
              {
                var imageInfo = value.match( /<img.*?>/ ),
                  listInfo = value.match( /^\[if !supportLists\]([\s\S]*?)\[endif\]$/ );
  
                // Seek for list bullet indicator.
                if ( listInfo )
                {
                  // Bullet symbol could be either text or an image.
                  var listSymbol = listInfo[ 1 ] || ( imageInfo && 'l.' ),
                    listType = listSymbol && listSymbol.match( />(?:[(]?)([^\s]+?)([.)]?)</ );
                  return createListBulletMarker( listType, listSymbol );
                }
  
                // Reveal the <img> element in conditional comments for Firefox.
                if ( CKEDITOR.env.gecko && imageInfo )
                {
                  var img = CKEDITOR.htmlParser.fragment.fromHtml( imageInfo[ 0 ] ).children[ 0 ],
                    previousComment = node.previous,
                    // Try to dig the real image link from vml markup from previous comment text.
                    imgSrcInfo = previousComment && previousComment.value.match( /<v:imagedata[^>]*o:href=['"](.*?)['"]/ ),
                    imgSrc = imgSrcInfo && imgSrcInfo[ 1 ];
  
                  // Is there a real 'src' url to be used?
                  imgSrc && ( img.attributes.src = imgSrc );
                  return img;
                }
  
                return false;
              }
            : falsyFilter
        };
      }
    });
  
    // The paste processor here is just a reduced copy of html data processor.
    var pasteProcessor = function()
    {
      this.dataFilter = new CKEDITOR.htmlParser.filter();
    };
  
    pasteProcessor.prototype =
    {
      toHtml : function( data )
      {
        var fragment = CKEDITOR.htmlParser.fragment.fromHtml( data, false ),
          writer = new CKEDITOR.htmlParser.basicWriter();
  
        fragment.writeHtml( writer, this.dataFilter );
        return writer.getHtml( true );
      }
    };
  
    CKEDITOR.cleanWord = function( data, editor )
    {
      // Firefox will be confused by those downlevel-revealed IE conditional
      // comments, fixing them first( convert it to upperlevel-revealed one ).
      // e.g. <![if !vml]>...<![endif]>
      if ( CKEDITOR.env.gecko )
        data = data.replace( /(<!--\[if[^<]*?\])-->([\S\s]*?)<!--(\[endif\]-->)/gi, '$1$2$3' );
  
      var dataProcessor = new pasteProcessor(),
        dataFilter = dataProcessor.dataFilter;
  
      // These rules will have higher priorities than default ones.
      dataFilter.addRules( CKEDITOR.plugins.pastefromword.getRules( editor ) );
  
      // Allow extending data filter rules.
      editor.fire( 'beforeCleanWord', { filter : dataFilter } );
  
      try
      {
        data = dataProcessor.toHtml( data, false );
      }
      catch ( e )
      {
        alert( editor.lang.pastefromword.error );
      }
  
      /* Below post processing those things that are unable to delivered by filter rules. */
  
      // Remove 'cke' namespaced attribute used in filter rules as marker.
      data = data.replace( /cke:.*?".*?"/g, '' );
  
      // Remove empty style attribute.
      data = data.replace( /style=""/g, '' );
  
      // Remove the dummy spans ( having no inline style ).
      data = data.replace( /<span>/g, '' );
  
      return data;
    };
  })();
  
  /**
   * Whether to ignore all font related formatting styles, including:
   * <ul>  <li>font size;</li>
   *    <li>font family;</li>
   *    <li>font foreground/background color.</li></ul>
   * @name CKEDITOR.config.pasteFromWordRemoveFontStyles
   * @since 3.1
   * @type Boolean
   * @default true
   * @example
   * config.pasteFromWordRemoveFontStyles = false;
   */
  
  /**
   * Whether to transform MS Word outline numbered headings into lists.
   * @name CKEDITOR.config.pasteFromWordNumberedHeadingToList
   * @since 3.1
   * @type Boolean
   * @default false
   * @example
   * config.pasteFromWordNumberedHeadingToList = true;
   */
  
  /**
   * Whether to remove element styles that can't be managed with the editor. Note
   * that this doesn't handle the font specific styles, which depends on the
   * {@link CKEDITOR.config.pasteFromWordRemoveFontStyles} setting instead.
   * @name CKEDITOR.config.pasteFromWordRemoveStyles
   * @since 3.1
   * @type Boolean
   * @default true
   * @example
   * config.pasteFromWordRemoveStyles = false;
   */
  