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1925 jp_milcent 1 
/*
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 * FCKeditor - The text editor for Internet - http://www.fckeditor.net
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 * Copyright (C) 2003-2009 Frederico Caldeira Knabben
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 *
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 * == BEGIN LICENSE ==
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 *
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 * Licensed under the terms of any of the following licenses at your
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 * choice:
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 *
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 *  - GNU General Public License Version 2 or later (the "GPL")
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 *    http://www.gnu.org/licenses/gpl.html
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 *
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 *  - GNU Lesser General Public License Version 2.1 or later (the "LGPL")
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 *    http://www.gnu.org/licenses/lgpl.html
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 *
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 *  - Mozilla Public License Version 1.1 or later (the "MPL")
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 *    http://www.mozilla.org/MPL/MPL-1.1.html
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 *
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 * == END LICENSE ==
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 *
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 * Plugin: automatically resizes the editor until a configurable maximun
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 * height (FCKConfig.AutoGrowMax), based on its contents.
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 */
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var FCKAutoGrow = {
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	MIN_HEIGHT : window.frameElement.offsetHeight,
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	Check : function()
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	{
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		var delta = FCKAutoGrow.GetHeightDelta() ;
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		if ( delta != 0 )
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		{
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			var newHeight = window.frameElement.offsetHeight + delta ;
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			newHeight = FCKAutoGrow.GetEffectiveHeight( newHeight ) ;
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			if ( newHeight != window.frameElement.height )
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			{
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				window.frameElement.style.height = newHeight + "px" ;
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				// Gecko browsers use an onresize handler to update the innermost
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				// IFRAME's height. If the document is modified before the onresize
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				// is triggered, the plugin will miscalculate the new height. Thus,
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				// forcibly trigger onresize. #1336
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				if ( typeof window.onresize == 'function' )
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				{
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					window.onresize() ;
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				}
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			}
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		}
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	},
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	CheckEditorStatus : function( sender, status )
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	{
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		if ( status == FCK_STATUS_COMPLETE )
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			FCKAutoGrow.Check() ;
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	},
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	GetEffectiveHeight : function( height )
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	{
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		if ( height < FCKAutoGrow.MIN_HEIGHT )
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			height = FCKAutoGrow.MIN_HEIGHT;
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		else
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		{
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			var max = FCKConfig.AutoGrowMax;
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			if ( max && max > 0 && height > max )
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				height = max;
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		}
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		return height;
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	},
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	GetHeightDelta : function()
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	{
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		var oInnerDoc = FCK.EditorDocument ;
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		var iFrameHeight ;
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		var iInnerHeight ;
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		if ( FCKBrowserInfo.IsIE )
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		{
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			iFrameHeight = FCK.EditorWindow.frameElement.offsetHeight ;
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			iInnerHeight = oInnerDoc.body.scrollHeight ;
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		}
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		else
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		{
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			iFrameHeight = FCK.EditorWindow.innerHeight ;
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			iInnerHeight = oInnerDoc.body.offsetHeight +
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				( parseInt( FCKDomTools.GetCurrentElementStyle( oInnerDoc.body, 'margin-top' ), 10 ) || 0 ) +
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				( parseInt( FCKDomTools.GetCurrentElementStyle( oInnerDoc.body, 'margin-bottom' ), 10 ) || 0 ) ;
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		}
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		return iInnerHeight - iFrameHeight ;
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	},
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	SetListeners : function()
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	{
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		if ( FCK.EditMode != FCK_EDITMODE_WYSIWYG )
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			return ;
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		FCK.EditorWindow.attachEvent( 'onscroll', FCKAutoGrow.Check ) ;
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		FCK.EditorDocument.attachEvent( 'onkeyup', FCKAutoGrow.Check ) ;
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	}
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};
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FCK.AttachToOnSelectionChange( FCKAutoGrow.Check ) ;
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if ( FCKBrowserInfo.IsIE )
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	FCK.Events.AttachEvent( 'OnAfterSetHTML', FCKAutoGrow.SetListeners ) ;
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FCK.Events.AttachEvent( 'OnStatusChange', FCKAutoGrow.CheckEditorStatus ) ;