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   1  /*
   2   * FCKeditor - The text editor for internet
   3   * Copyright (C) 2003-2006 Frederico Caldeira Knabben
   4   * 
   5   * Licensed under the terms of the GNU Lesser General Public License:
   6   *         http://www.opensource.org/licenses/lgpl-license.php
   7   * 
   8   * For further information visit:
   9   *         http://www.fckeditor.net/
  10   * 
  11   * "Support Open Source software. What about a donation today?"
  12   * 
  13   * File Name: fcktools_ie.js
  14   *     Utility functions. (IE version).
  15   * 
  16   * File Authors:
  17   *         Frederico Caldeira Knabben (fredck@fckeditor.net)
  18   */
  19  
  20  FCKTools.CancelEvent = function( e )
  21  {
  22      return false ;
  23  }
  24  
  25  // Appends a CSS file to a document.
  26  FCKTools.AppendStyleSheet = function( documentElement, cssFileUrl )
  27  {
  28      return documentElement.createStyleSheet( cssFileUrl ).owningElement ;
  29  }
  30  
  31  // Removes all attributes and values from the element.
  32  FCKTools.ClearElementAttributes = function( element )
  33  {
  34      element.clearAttributes() ;
  35  }
  36  
  37  FCKTools.GetAllChildrenIds = function( parentElement )
  38  {
  39      var aIds = new Array() ;
  40      for ( var i = 0 ; i < parentElement.all.length ; i++ )
  41      {
  42          var sId = parentElement.all[i].id ;
  43          if ( sId && sId.length > 0 )
  44              aIds[ aIds.length ] = sId ;
  45      }
  46      return aIds ;
  47  }
  48  
  49  FCKTools.RemoveOuterTags = function( e )
  50  {
  51      e.insertAdjacentHTML( 'beforeBegin', e.innerHTML ) ;
  52      e.parentNode.removeChild( e ) ;
  53  }
  54  
  55  FCKTools.CreateXmlObject = function( object )
  56  {
  57      var aObjs ;
  58      
  59      switch ( object )
  60      {
  61          case 'XmlHttp' :
  62              aObjs = [ 'MSXML2.XmlHttp', 'Microsoft.XmlHttp' ] ;
  63              break ;
  64                  
  65          case 'DOMDocument' :
  66              aObjs = [ 'MSXML2.DOMDocument', 'Microsoft.XmlDom' ] ;
  67              break ;
  68      }
  69  
  70      for ( var i = 0 ; i < 2 ; i++ )
  71      {
  72          try { return new ActiveXObject( aObjs[i] ) ; }
  73          catch (e) 
  74          {}
  75      }
  76      
  77      if ( FCKLang.NoActiveX )
  78      {
  79          alert( FCKLang.NoActiveX ) ;
  80          FCKLang.NoActiveX = null ;
  81      }
  82  }
  83  
  84  FCKTools.DisableSelection = function( element )
  85  {
  86      element.unselectable = 'on' ;
  87  
  88      var e, i = 0 ;
  89      while ( e = element.all[ i++ ] )
  90      {
  91          switch ( e.tagName )
  92          {
  93              case 'IFRAME' :
  94              case 'TEXTAREA' :
  95              case 'INPUT' :
  96              case 'SELECT' :
  97                  /* Ignore the above tags */
  98                  break ;
  99              default :
 100                  e.unselectable = 'on' ;
 101          }
 102      }
 103  }
 104  
 105  FCKTools.GetScrollPosition = function( relativeWindow )
 106  {
 107      var oDoc = relativeWindow.document ;
 108  
 109      // Try with the doc element.
 110      var oPos = { X : oDoc.documentElement.scrollLeft, Y : oDoc.documentElement.scrollTop } ;
 111      
 112      if ( oPos.X > 0 || oPos.Y > 0 )
 113          return oPos ;
 114  
 115      // If no scroll, try with the body.
 116      return { X : oDoc.body.scrollLeft, Y : oDoc.body.scrollTop } ;
 117  }
 118  
 119  FCKTools.AddEventListener = function( sourceObject, eventName, listener )
 120  {
 121      sourceObject.attachEvent( 'on' + eventName, listener ) ;
 122  }
 123  
 124  FCKTools.RemoveEventListener = function( sourceObject, eventName, listener )
 125  {
 126      sourceObject.detachEvent( 'on' + eventName, listener ) ;
 127  }
 128  
 129  // Listeners attached with this function cannot be detached.
 130  FCKTools.AddEventListenerEx = function( sourceObject, eventName, listener, paramsArray )
 131  {
 132      // Ok... this is a closures party, but is the only way to make it clean of memory leaks.
 133      var o = new Object() ;
 134      o.Source = sourceObject ;
 135      o.Params = paramsArray || [] ;    // Memory leak if we have DOM objects here.
 136      o.Listener = function( ev )
 137      {
 138          return listener.apply( o.Source, [ ev ].concat( o.Params ) ) ;
 139      }
 140      
 141      if ( FCK.IECleanup )
 142          FCK.IECleanup.AddItem( null, function() { o.Source = null ; o.Params = null ; } ) ;
 143      
 144      sourceObject.attachEvent( 'on' + eventName, o.Listener ) ;
 145  
 146      sourceObject = null ;    // Memory leak cleaner (because of the above closure).
 147      paramsArray = null ;    // Memory leak cleaner (because of the above closure).
 148  }
 149  
 150  // Returns and object with the "Width" and "Height" properties.
 151  FCKTools.GetViewPaneSize = function( win )
 152  {
 153      var oSizeSource ;
 154      
 155      var oDoc = win.document.documentElement ;
 156      if ( oDoc && oDoc.clientWidth )                // IE6 Strict Mode
 157          oSizeSource = oDoc ;
 158      else
 159          oSizeSource = top.document.body ;        // Other IEs
 160      
 161      if ( oSizeSource )
 162          return { Width : oSizeSource.clientWidth, Height : oSizeSource.clientHeight } ;
 163      else
 164          return { Width : 0, Height : 0 } ;
 165  }
 166  
 167  FCKTools.SaveStyles = function( element )
 168  {
 169      var oSavedStyles = new Object() ;
 170      
 171      if ( element.className.length > 0 )
 172      {
 173          oSavedStyles.Class = element.className ;
 174          element.className = '' ;
 175      }
 176  
 177      var sInlineStyle = element.style.cssText ;
 178  
 179      if ( sInlineStyle.length > 0 )
 180      {
 181          oSavedStyles.Inline = sInlineStyle ;
 182          element.style.cssText = '' ;
 183      }
 184      
 185      return oSavedStyles ;
 186  }
 187  
 188  FCKTools.RestoreStyles = function( element, savedStyles )
 189  {
 190      element.className        = savedStyles.Class || '' ;
 191      element.style.cssText    = savedStyles.Inline || '' ;
 192  }
 193  
 194  FCKTools.RegisterDollarFunction = function( targetWindow )
 195  {
 196      targetWindow.$ = targetWindow.document.getElementById ;
 197  }
 198  
 199  FCKTools.AppendElement = function( target, elementName )
 200  {
 201      return target.appendChild( this.GetElementDocument( target ).createElement( elementName ) ) ;
 202  }