text: ﻿/*
   * FCKeditor - The text editor for Internet - http://www.fckeditor.net
   * Copyright (C) 2003-2010 Frederico Caldeira Knabben
   *
   * == BEGIN LICENSE ==
   *
   * Licensed under the terms of any of the following licenses at your
   * choice:
   *
   *  - GNU General Public License Version 2 or later (the "GPL")
   *    http://www.gnu.org/licenses/gpl.html
   *
   *  - GNU Lesser General Public License Version 2.1 or later (the "LGPL")
   *    http://www.gnu.org/licenses/lgpl.html
   *
   *  - Mozilla Public License Version 1.1 or later (the "MPL")
   *    http://www.mozilla.org/MPL/MPL-1.1.html
   *
   * == END LICENSE ==
   *
   * Plugin: automatically resizes the editor until a configurable maximun
   * height (FCKConfig.AutoGrowMax), based on its contents.
   */
  
  var FCKAutoGrow = {
  	MIN_HEIGHT : window.frameElement.offsetHeight,
  
  	Check : function()
  	{
  		var delta = FCKAutoGrow.GetHeightDelta() ;
  		if ( delta != 0 )
  		{
  			var newHeight = window.frameElement.offsetHeight + delta ;
  
  			newHeight = FCKAutoGrow.GetEffectiveHeight( newHeight ) ;
  
  			if ( newHeight != window.frameElement.height )
  			{
  				window.frameElement.style.height = newHeight + "px" ;
  
  				// Gecko browsers use an onresize handler to update the innermost
  				// IFRAME's height. If the document is modified before the onresize
  				// is triggered, the plugin will miscalculate the new height. Thus,
  				// forcibly trigger onresize. #1336
  				if ( typeof window.onresize == 'function' )
  				{
  					window.onresize() ;
  				}
  			}
  		}
  	},
  
  	CheckEditorStatus : function( sender, status )
  	{
  		if ( status == FCK_STATUS_COMPLETE )
  			FCKAutoGrow.Check() ;
  	},
  
  	GetEffectiveHeight : function( height )
  	{
  		if ( height < FCKAutoGrow.MIN_HEIGHT )
  			height = FCKAutoGrow.MIN_HEIGHT;
  		else
  		{
  			var max = FCKConfig.AutoGrowMax;
  			if ( max && max > 0 && height > max )
  				height = max;
  		}
  
  		return height;
  	},
  
  	GetHeightDelta : function()
  	{
  		var oInnerDoc = FCK.EditorDocument ;
  
  		var iFrameHeight ;
  		var iInnerHeight ;
  
  		if ( FCKBrowserInfo.IsIE )
  		{
  			iFrameHeight = FCK.EditorWindow.frameElement.offsetHeight ;
  			iInnerHeight = oInnerDoc.body.scrollHeight ;
  		}
  		else
  		{
  			iFrameHeight = FCK.EditorWindow.innerHeight ;
  			iInnerHeight = oInnerDoc.body.offsetHeight +
  				( parseInt( FCKDomTools.GetCurrentElementStyle( oInnerDoc.body, 'margin-top' ), 10 ) || 0 ) +
  				( parseInt( FCKDomTools.GetCurrentElementStyle( oInnerDoc.body, 'margin-bottom' ), 10 ) || 0 ) ;
  		}
  
  		return iInnerHeight - iFrameHeight ;
  	},
  
  	SetListeners : function()
  	{
  		if ( FCK.EditMode != FCK_EDITMODE_WYSIWYG )
  			return ;
  
  		FCK.EditorWindow.attachEvent( 'onscroll', FCKAutoGrow.Check ) ;
  		FCK.EditorDocument.attachEvent( 'onkeyup', FCKAutoGrow.Check ) ;
  	}
  };
  
  FCK.AttachToOnSelectionChange( FCKAutoGrow.Check ) ;
  
  if ( FCKBrowserInfo.IsIE )
  	FCK.Events.AttachEvent( 'OnAfterSetHTML', FCKAutoGrow.SetListeners ) ;
  
  FCK.Events.AttachEvent( 'OnStatusChange', FCKAutoGrow.CheckEditorStatus ) ;
  