text: /*
   * 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: fckplugin.js
   * 	Plugin to insert "Placeholders" in the editor.
   * 
   * File Authors:
   * 		Frederico Caldeira Knabben (fredck@fckeditor.net)
   */
  
  // Register the related command.
  FCKCommands.RegisterCommand( 'Placeholder', new FCKDialogCommand( 'Placeholder', FCKLang.PlaceholderDlgTitle, FCKPlugins.Items['placeholder'].Path + 'fck_placeholder.html', 340, 170 ) ) ;
  
  // Create the "Plaholder" toolbar button.
  var oPlaceholderItem = new FCKToolbarButton( 'Placeholder', FCKLang.PlaceholderBtn ) ;
  oPlaceholderItem.IconPath = FCKPlugins.Items['placeholder'].Path + 'placeholder.gif' ;
  
  FCKToolbarItems.RegisterItem( 'Placeholder', oPlaceholderItem ) ;
  
  
  // The object used for all Placeholder operations.
  var FCKPlaceholders = new Object() ;
  
  // Add a new placeholder at the actual selection.
  FCKPlaceholders.Add = function( name )
  {
  	var oSpan = FCK.CreateElement( 'SPAN' ) ;
  	this.SetupSpan( oSpan, name ) ;
  }
  
  FCKPlaceholders.SetupSpan = function( span, name )
  {
  	span.innerHTML = '[[ ' + name + ' ]]' ;
  
  	span.style.backgroundColor = '#ffff00' ;
  	span.style.color = '#000000' ;
  
  	if ( FCKBrowserInfo.IsGecko )
  		span.style.cursor = 'default' ;
  
  	span._fckplaceholder = name ;
  	span.contentEditable = false ;
  
  	// To avoid it to be resized.
  	span.onresizestart = function()
  	{
  		FCK.EditorWindow.event.returnValue = false ;
  		return false ;
  	}
  }
  
  // On Gecko we must do this trick so the user select all the SPAN when clicking on it.
  FCKPlaceholders._SetupClickListener = function()
  {
  	FCKPlaceholders._ClickListener = function( e )
  	{
  		if ( e.target.tagName == 'SPAN' && e.target._fckplaceholder )
  			FCKSelection.SelectNode( e.target ) ;
  	}
  
  	FCK.EditorDocument.addEventListener( 'click', FCKPlaceholders._ClickListener, true ) ;
  }
  
  // Open the Placeholder dialog on double click.
  FCKPlaceholders.OnDoubleClick = function( span )
  {
  	if ( span.tagName == 'SPAN' && span._fckplaceholder )
  		FCKCommands.GetCommand( 'Placeholder' ).Execute() ;
  }
  
  FCK.RegisterDoubleClickHandler( FCKPlaceholders.OnDoubleClick, 'SPAN' ) ;
  
  // Check if a Placholder name is already in use.
  FCKPlaceholders.Exist = function( name )
  {
  	var aSpans = FCK.EditorDocument.getElementsByTagName( 'SPAN' )
  
  	for ( var i = 0 ; i < aSpans.length ; i++ )
  	{
  		if ( aSpans[i]._fckplaceholder == name )
  			return true ;
  	}
  }
  
  if ( FCKBrowserInfo.IsIE )
  {
  	FCKPlaceholders.Redraw = function()
  	{
  		var aPlaholders = FCK.EditorDocument.body.innerText.match( /\[\[[^\[\]]+\]\]/g ) ;
  		if ( !aPlaholders )
  			return ;
  
  		var oRange = FCK.EditorDocument.body.createTextRange() ;
  
  		for ( var i = 0 ; i < aPlaholders.length ; i++ )
  		{
  			if ( oRange.findText( aPlaholders[i] ) )
  			{
  				var sName = aPlaholders[i].match( /\[\[\s*([^\]]*?)\s*\]\]/ )[1] ;
  				oRange.pasteHTML( '<span style="color: #000000; background-color: #ffff00" contenteditable="false" _fckplaceholder="' + sName + '">' + aPlaholders[i] + '</span>' ) ;
  			}
  		}
  	}
  }
  else
  {
  	FCKPlaceholders.Redraw = function()
  	{
  		var oInteractor = FCK.EditorDocument.createTreeWalker( FCK.EditorDocument.body, NodeFilter.SHOW_TEXT, FCKPlaceholders._AcceptNode, true ) ;
  
  		var	aNodes = new Array() ;
  
  		while ( oNode = oInteractor.nextNode() )
  		{
  			aNodes[ aNodes.length ] = oNode ;
  		}
  
  		for ( var n = 0 ; n < aNodes.length ; n++ )
  		{
  			var aPieces = aNodes[n].nodeValue.split( /(\[\[[^\[\]]+\]\])/g ) ;
  
  			for ( var i = 0 ; i < aPieces.length ; i++ )
  			{
  				if ( aPieces[i].length > 0 )
  				{
  					if ( aPieces[i].indexOf( '[[' ) == 0 )
  					{
  						var sName = aPieces[i].match( /\[\[\s*([^\]]*?)\s*\]\]/ )[1] ;
  
  						var oSpan = FCK.EditorDocument.createElement( 'span' ) ;
  						FCKPlaceholders.SetupSpan( oSpan, sName ) ;
  
  						aNodes[n].parentNode.insertBefore( oSpan, aNodes[n] ) ;
  					}
  					else
  						aNodes[n].parentNode.insertBefore( FCK.EditorDocument.createTextNode( aPieces[i] ) , aNodes[n] ) ;
  				}
  			}
  
  			aNodes[n].parentNode.removeChild( aNodes[n] ) ;
  		}
  		
  		FCKPlaceholders._SetupClickListener() ;
  	}
  
  	FCKPlaceholders._AcceptNode = function( node )
  	{
  		if ( /\[\[[^\[\]]+\]\]/.test( node.nodeValue ) )
  			return NodeFilter.FILTER_ACCEPT ;
  		else
  			return NodeFilter.FILTER_SKIP ;
  	}
  }
  
  FCK.Events.AttachEvent( 'OnAfterSetHTML', FCKPlaceholders.Redraw ) ;
  
  // We must process the SPAN tags to replace then with the real resulting value of the placeholder.
  FCKXHtml.TagProcessors['span'] = function( node, htmlNode )
  {
  	if ( htmlNode._fckplaceholder )
  		node = FCKXHtml.XML.createTextNode( '[[' + htmlNode._fckplaceholder + ']]' ) ;
  	else
  		FCKXHtml._AppendChildNodes( node, htmlNode, false ) ;
  
  	return node ;
  }