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/*

 * FCKeditor - The text editor for internet

 * Copyright (C) 2003-2006 Frederico Caldeira Knabben

 *

 * Licensed under the terms of the GNU Lesser General Public License:

 * 		http://www.opensource.org/licenses/lgpl-license.php

 *

 * For further information visit:

 * 		http://www.fckeditor.net/

 *

 * "Support Open Source software. What about a donation today?"

 *

 * File Name: fck_1_ie.js

 * 	This is the first part of the "FCK" object creation. This is the main

 * 	object that represents an editor instance.

 * 	(IE specific implementations)

 *

 * File Authors:

 * 		Frederico Caldeira Knabben (fredck@fckeditor.net)

 */

FCK.Description = "FCKeditor for Internet Explorer 5.5+" ;

FCK._GetBehaviorsStyle = function()

{

	if ( !FCK._BehaviorsStyle )

	{

		var sBasePath = FCKConfig.FullBasePath ;

		var sTableBehavior = '' ;

		var sStyle ;

		// The behaviors should be pointed using the FullBasePath to avoid security

		// errors when using a differente BaseHref.

		sStyle =

			'<style type="text/css" _fcktemp="true">' +

			'INPUT { behavior: url(' + sBasePath + 'css/behaviors/hiddenfield.htc) ; }' ;

		if ( FCKConfig.ShowBorders )

			sTableBehavior = 'url(' + sBasePath + 'css/behaviors/showtableborders.htc)' ;

		// Disable resize handlers.

		sStyle += 'INPUT,TEXTAREA,SELECT,.FCK__Anchor,.FCK__PageBreak' ;

		if ( FCKConfig.DisableObjectResizing )

		{

			sStyle += ',IMG' ;

			sTableBehavior += ' url(' + sBasePath + 'css/behaviors/disablehandles.htc)' ;

		}

		sStyle += ' { behavior: url(' + sBasePath + 'css/behaviors/disablehandles.htc) ; }' ;

		if ( sTableBehavior.length > 0 )

			sStyle += 'TABLE { behavior: ' + sTableBehavior + ' ; }' ;

		sStyle += '</style>' ;

		FCK._BehaviorsStyle = sStyle ;

	}

	return FCK._BehaviorsStyle ;

}

function Doc_OnMouseUp()

{

	if ( FCK.EditorWindow.event.srcElement.tagName == 'HTML' )

	{

		FCK.Focus() ;

		FCK.EditorWindow.event.cancelBubble	= true ;

		FCK.EditorWindow.event.returnValue	= false ;

	}

}

function Doc_OnPaste()

{

	if ( FCK.Status == FCK_STATUS_COMPLETE )

		FCK.Events.FireEvent( "OnPaste" ) ;

	return false ;

}

/*

function Doc_OnContextMenu()

{

	var e = FCK.EditorWindow.event ;

	FCK.ShowContextMenu( e.screenX, e.screenY ) ;

	return false ;

}

*/

function Doc_OnKeyDown()

{

	var e = FCK.EditorWindow.event ;

	switch ( e.keyCode )

	{

		case 13 :	// ENTER

			if ( FCKConfig.UseBROnCarriageReturn && !(e.ctrlKey || e.altKey || e.shiftKey) )

			{

				Doc_OnKeyDownUndo() ;

				// We must ignore it if we are inside a List.

				if ( FCK.EditorDocument.queryCommandState( 'InsertOrderedList' ) || FCK.EditorDocument.queryCommandState( 'InsertUnorderedList' ) )

					return true ;

				// Insert the <BR> (The &nbsp; must be also inserted to make it work)

				FCK.InsertHtml( '<br>&nbsp;' ) ;

				// Remove the  

				var oRange = FCK.EditorDocument.selection.createRange() ;

				oRange.moveStart( 'character', -1 ) ;

				oRange.select() ;

				FCK.EditorDocument.selection.clear() ;

				return false ;

			}

			break ;

		case 8 :	// BACKSPACE

			// We must delete a control selection by code and cancels the

			// keystroke, otherwise IE will execute the browser's "back" button.

			if ( FCKSelection.GetType() == 'Control' )

			{

				FCKSelection.Delete() ;

				return false ;

			}

			break ;

		case 9 :	// TAB

			if ( FCKConfig.TabSpaces > 0 && !(e.ctrlKey || e.altKey || e.shiftKey) )

			{

				Doc_OnKeyDownUndo() ;

				FCK.InsertHtml( window.FCKTabHTML ) ;

				return false ;

			}

			break ;

		case 90 :	// Z

			if ( e.ctrlKey && !(e.altKey || e.shiftKey) )

			{

				FCKUndo.Undo() ;

				return false ;

			}

			break ;

		case 89 :	// Y

			if ( e.ctrlKey && !(e.altKey || e.shiftKey) )

			{

				FCKUndo.Redo() ;

				return false ;

			}

			break ;

	}

	if ( !( e.keyCode >=16 && e.keyCode <= 18 ) )

		Doc_OnKeyDownUndo() ;

	return true ;

}

function Doc_OnKeyDownUndo()

{

	if ( !FCKUndo.Typing )

	{

		FCKUndo.SaveUndoStep() ;

		FCKUndo.Typing = true ;

		FCK.Events.FireEvent( "OnSelectionChange" ) ;

	}

	FCKUndo.TypesCount++ ;

	if ( FCKUndo.TypesCount > FCKUndo.MaxTypes )

	{

		FCKUndo.TypesCount = 0 ;

		FCKUndo.SaveUndoStep() ;

	}

}

function Doc_OnDblClick()

{

	FCK.OnDoubleClick( FCK.EditorWindow.event.srcElement ) ;

	FCK.EditorWindow.event.cancelBubble = true ;

}

function Doc_OnSelectionChange()

{

	FCK.Events.FireEvent( "OnSelectionChange" ) ;

}

FCK.InitializeBehaviors = function( dontReturn )

{

	// Set the focus to the editable area when clicking in the document area.

	// TODO: The cursor must be positioned at the end.

	this.EditorDocument.attachEvent( 'onmouseup', Doc_OnMouseUp ) ;

	// Intercept pasting operations

	this.EditorDocument.body.attachEvent( 'onpaste', Doc_OnPaste ) ;

	// Reset the context menu.

	FCK.ContextMenu._InnerContextMenu.AttachToElement( FCK.EditorDocument.body ) ;

	// Build the "TAB" key replacement (if necessary).

	if ( FCKConfig.TabSpaces > 0 )

	{

		window.FCKTabHTML = '' ;

		for ( i = 0 ; i < FCKConfig.TabSpaces ; i++ )

			window.FCKTabHTML += " " ;

	}

	this.EditorDocument.attachEvent("onkeydown", Doc_OnKeyDown ) ;

	this.EditorDocument.attachEvent("ondblclick", Doc_OnDblClick ) ;

	// Catch cursor movements

	this.EditorDocument.attachEvent("onselectionchange", Doc_OnSelectionChange ) ;

	//Enable editing

//	this.EditorDocument.body.contentEditable = true ;

}

FCK.InsertHtml = function( html )

{

	html = FCKConfig.ProtectedSource.Protect( html ) ;

	html = FCK.ProtectUrls( html ) ;

	FCK.Focus() ;

	FCKUndo.SaveUndoStep() ;

	// Gets the actual selection.

	var oSel = FCK.EditorDocument.selection ;

	// Deletes the actual selection contents.

	if ( oSel.type.toLowerCase() == 'control' )

		oSel.clear() ;

	// Insert the HTML.

	oSel.createRange().pasteHTML( html ) ;

	FCKDocumentProcessor.Process( FCK.EditorDocument ) ;

}

FCK.SetInnerHtml = function( html )		// IE Only

{

	var oDoc = FCK.EditorDocument ;

	// Using the following trick, any comment in the begining of the HTML will

	// be preserved.

	oDoc.body.innerHTML = '<div id="__fakeFCKRemove__">&nbsp;</div>' + html ;

	oDoc.getElementById('__fakeFCKRemove__').removeNode( true ) ;

}

var FCK_PreloadImages_Count = 0 ;

var FCK_PreloadImages_Images = new Array() ;

function FCK_PreloadImages()

{

	// Get the images to preload.

	var aImages = FCKConfig.PreloadImages || [] ;

	if ( typeof( aImages ) == 'string' )

		aImages = aImages.split( ';' ) ;

	// Add the skin icons strip.

	aImages.push( FCKConfig.SkinPath + 'fck_strip.gif' ) ;

	FCK_PreloadImages_Count = aImages.length ;

	var aImageElements = new Array() ;

	for ( var i = 0 ; i < aImages.length ; i++ )

	{

		var eImg = document.createElement( 'img' ) ;

		eImg.onload = eImg.onerror = FCK_PreloadImages_OnImage ;

		eImg.src = aImages[i] ;

		FCK_PreloadImages_Images[i] = eImg ;

	}

}

function FCK_PreloadImages_OnImage()

{

	if ( (--FCK_PreloadImages_Count) == 0 )

		FCKTools.RunFunction( LoadToolbarSetup ) ;

}

// Disable the context menu in the editor (outside the editing area).

function Document_OnContextMenu()

{

	return ( event.srcElement._FCKShowContextMenu == true ) ;

}

document.oncontextmenu = Document_OnContextMenu ;

function FCK_Cleanup()

{

	this.EditorWindow = null ;

	this.EditorDocument = null ;

}