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   1  /*
   2   * FCKeditor - The text editor for Internet - http://www.fckeditor.net
   3   * Copyright (C) 2003-2007 Frederico Caldeira Knabben
   4   * 
   5   * == BEGIN LICENSE ==
   6   * 
   7   * Licensed under the terms of any of the following licenses at your
   8   * choice:
   9   * 
  10   *  - GNU General Public License Version 2 or later (the "GPL")
  11   *    http://www.gnu.org/licenses/gpl.html
  12   * 
  13   *  - GNU Lesser General Public License Version 2.1 or later (the "LGPL")
  14   *    http://www.gnu.org/licenses/lgpl.html
  15   * 
  16   *  - Mozilla Public License Version 1.1 or later (the "MPL")
  17   *    http://www.mozilla.org/MPL/MPL-1.1.html
  18   * 
  19   * == END LICENSE ==
  20   * 
  21   * File Name: fcktools_ie.js
  22   *     Utility functions. (IE version).
  23   * 
  24   * File Authors:
  25   *         Frederico Caldeira Knabben (www.fckeditor.net)
  26   */
  27  
  28  FCKTools.CancelEvent = function( e )
  29  {
  30      return false ;
  31  }
  32  
  33  // Appends one or more CSS files to a document.
  34  FCKTools._AppendStyleSheet = function( documentElement, cssFileUrl )
  35  {
  36      return documentElement.createStyleSheet( cssFileUrl ).owningElement ;
  37  }
  38  
  39  // Removes all attributes and values from the element.
  40  FCKTools.ClearElementAttributes = function( element )
  41  {
  42      element.clearAttributes() ;
  43  }
  44  
  45  FCKTools.GetAllChildrenIds = function( parentElement )
  46  {
  47      var aIds = new Array() ;
  48      for ( var i = 0 ; i < parentElement.all.length ; i++ )
  49      {
  50          var sId = parentElement.all[i].id ;
  51          if ( sId && sId.length > 0 )
  52              aIds[ aIds.length ] = sId ;
  53      }
  54      return aIds ;
  55  }
  56  
  57  FCKTools.RemoveOuterTags = function( e )
  58  {
  59      e.insertAdjacentHTML( 'beforeBegin', e.innerHTML ) ;
  60      e.parentNode.removeChild( e ) ;
  61  }
  62  
  63  FCKTools.CreateXmlObject = function( object )
  64  {
  65      var aObjs ;
  66      
  67      switch ( object )
  68      {
  69          case 'XmlHttp' :
  70              aObjs = [ 'MSXML2.XmlHttp', 'Microsoft.XmlHttp' ] ;
  71              break ;
  72                  
  73          case 'DOMDocument' :
  74              aObjs = [ 'MSXML2.DOMDocument', 'Microsoft.XmlDom' ] ;
  75              break ;
  76      }
  77  
  78      for ( var i = 0 ; i < 2 ; i++ )
  79      {
  80          try { return new ActiveXObject( aObjs[i] ) ; }
  81          catch (e) 
  82          {}
  83      }
  84      
  85      if ( FCKLang.NoActiveX )
  86      {
  87          alert( FCKLang.NoActiveX ) ;
  88          FCKLang.NoActiveX = null ;
  89      }
  90      return null ;
  91  }
  92  
  93  FCKTools.DisableSelection = function( element )
  94  {
  95      element.unselectable = 'on' ;
  96  
  97      var e, i = 0 ;
  98      // The extra () is to avoid a warning with strict error checking. This is ok.
  99      while ( (e = element.all[ i++ ]) )
 100      {
 101          switch ( e.tagName )
 102          {
 103              case 'IFRAME' :
 104              case 'TEXTAREA' :
 105              case 'INPUT' :
 106              case 'SELECT' :
 107                  /* Ignore the above tags */
 108                  break ;
 109              default :
 110                  e.unselectable = 'on' ;
 111          }
 112      }
 113  }
 114  
 115  FCKTools.GetScrollPosition = function( relativeWindow )
 116  {
 117      var oDoc = relativeWindow.document ;
 118  
 119      // Try with the doc element.
 120      var oPos = { X : oDoc.documentElement.scrollLeft, Y : oDoc.documentElement.scrollTop } ;
 121      
 122      if ( oPos.X > 0 || oPos.Y > 0 )
 123          return oPos ;
 124  
 125      // If no scroll, try with the body.
 126      return { X : oDoc.body.scrollLeft, Y : oDoc.body.scrollTop } ;
 127  }
 128  
 129  FCKTools.AddEventListener = function( sourceObject, eventName, listener )
 130  {
 131      sourceObject.attachEvent( 'on' + eventName, listener ) ;
 132  }
 133  
 134  FCKTools.RemoveEventListener = function( sourceObject, eventName, listener )
 135  {
 136      sourceObject.detachEvent( 'on' + eventName, listener ) ;
 137  }
 138  
 139  // Listeners attached with this function cannot be detached.
 140  FCKTools.AddEventListenerEx = function( sourceObject, eventName, listener, paramsArray )
 141  {
 142      // Ok... this is a closures party, but is the only way to make it clean of memory leaks.
 143      var o = new Object() ;
 144      o.Source = sourceObject ;
 145      o.Params = paramsArray || [] ;    // Memory leak if we have DOM objects here.
 146      o.Listener = function( ev )
 147      {
 148          return listener.apply( o.Source, [ ev ].concat( o.Params ) ) ;
 149      }
 150      
 151      if ( FCK.IECleanup )
 152          FCK.IECleanup.AddItem( null, function() { o.Source = null ; o.Params = null ; } ) ;
 153      
 154      sourceObject.attachEvent( 'on' + eventName, o.Listener ) ;
 155  
 156      sourceObject = null ;    // Memory leak cleaner (because of the above closure).
 157      paramsArray = null ;    // Memory leak cleaner (because of the above closure).
 158  }
 159  
 160  // Returns and object with the "Width" and "Height" properties.
 161  FCKTools.GetViewPaneSize = function( win )
 162  {
 163      var oSizeSource ;
 164      
 165      var oDoc = win.document.documentElement ;
 166      if ( oDoc && oDoc.clientWidth )                // IE6 Strict Mode
 167          oSizeSource = oDoc ;
 168      else
 169          oSizeSource = top.document.body ;        // Other IEs
 170      
 171      if ( oSizeSource )
 172          return { Width : oSizeSource.clientWidth, Height : oSizeSource.clientHeight } ;
 173      else
 174          return { Width : 0, Height : 0 } ;
 175  }
 176  
 177  FCKTools.SaveStyles = function( element )
 178  {
 179      var oSavedStyles = new Object() ;
 180      
 181      if ( element.className.length > 0 )
 182      {
 183          oSavedStyles.Class = element.className ;
 184          element.className = '' ;
 185      }
 186  
 187      var sInlineStyle = element.style.cssText ;
 188  
 189      if ( sInlineStyle.length > 0 )
 190      {
 191          oSavedStyles.Inline = sInlineStyle ;
 192          element.style.cssText = '' ;
 193      }
 194      
 195      return oSavedStyles ;
 196  }
 197  
 198  FCKTools.RestoreStyles = function( element, savedStyles )
 199  {
 200      element.className        = savedStyles.Class || '' ;
 201      element.style.cssText    = savedStyles.Inline || '' ;
 202  }
 203  
 204  FCKTools.RegisterDollarFunction = function( targetWindow )
 205  {
 206      targetWindow.$ = targetWindow.document.getElementById ;
 207  }
 208  
 209  FCKTools.AppendElement = function( target, elementName )
 210  {
 211      return target.appendChild( this.GetElementDocument( target ).createElement( elementName ) ) ;
 212  }
 213  
 214  // This function may be used by Regex replacements.
 215  FCKTools.ToLowerCase = function( strValue )
 216  {
 217      return strValue.toLowerCase() ;
 218  }