/*
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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 ) ;
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