// $Id: fckplugin.js,v 1.2.2.3 2009/01/28 14:52:27 wwalc Exp $

/*

 * FCKeditor - The text editor for Internet - http://www.fckeditor.net

 * Copyright (C) 2003-2007 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: add support for <!--pagebreak--> tag inside Drupal

 * Source: http://drupal.org/node/81893

 */

// Define the command.

var FCKDrupalPageBreak = function( name )

{

	this.Name = name ;

	this.EditMode = FCK.EditMode;

}

FCKDrupalPageBreak.prototype.Execute = function()

{

	if ( FCK.EditMode != FCK_EDITMODE_WYSIWYG ) 

		return ;

	FCKUndo.SaveUndoStep() ;

	switch ( this.Name )

	{

		case 'Break' :

			var e = FCK.EditorDocument.createComment( 'pagebreak' ) ;

			var oFakeImage = FCK.InsertElement( FCKDocumentProcessor_CreateFakeImage( 'FCK__PageBreak', e ) ) ;

			oFakeImage.setAttribute( "_drupalpagebreak", "true" ) ;

			this.MoveBreakOutsideElement();

		break;

		default :

		break;

	}	

}

FCKDrupalPageBreak.prototype.MoveBreakOutsideElement = function()

{

  FCK.FixBody();

	// get all elements in FCK document

	var elements = FCK.EditorDocument.getElementsByTagName( 'img' ) ;

	// check every element for childNodes

	var i = 0;

	var next ;

	while ( element = elements[i++] )

	{

		if ( element.getAttribute( '_drupalpagebreak' ) == "true" )

		{

			while( ( next = element.parentNode.nodeName.toLowerCase() ) != 'body' ) 

			{

				//if we are inside p or div, close immediately this tag, insert break tag, 

				//create new element and move remaining siblings to the next element

				if ( ( next == 'div' || next == 'p' ) && ( element.parentNode.parentNode.nodeName.toLowerCase() == 'body' ) )

				{

					var oParent = element.parentNode ;

					var oDiv = FCK.EditorDocument.createElement( next.toUpperCase() ) ;

					var bDivEmpty = true ;

					var sibling ;

					while( sibling = element.nextSibling )

					{

						if (!((sibling.nodeType == 3 && !sibling.nodeValue.length) || (sibling.nodeType == 1 && sibling.nodeName.toLowerCase() == 'br' && sibling.getAttribute( 'type' ) == '_moz'))) {

						bDivEmpty = false ;

						}

						oDiv.appendChild( sibling ) ;

					}

					if ( oDiv.childNodes.length )

					{

						if ( oParent.nextSibling )

							FCK.EditorDocument.body.insertBefore( oDiv, oParent.nextSibling ) ;

						else

							FCK.EditorDocument.body.appendChild( oDiv ) ;

					}

					if ( element.parentNode.nextSibling )

						element.parentNode.parentNode.insertBefore( element, element.parentNode.nextSibling ) ;

					else

						element.parentNode.parentNode.appendChild( element ) ;

					if ( !oParent.childNodes.length )

						FCK.EditorDocument.body.removeChild( oParent ) ;

					//if we put pagebreak next to another pagrebreak, remove it

					if ( element.nextSibling && element.nextSibling.getAttribute( '_drupalpagebreak' ) == "true")

						element.parentNode.removeChild( element.nextSibling ) ;

					//we must be sure the bogus node is available to make cursor blinking

					if ( FCKBrowserInfo.IsGeckoLike )

						FCKTools.AppendBogusBr( oParent ) ;

					if ( bDivEmpty )

						oDiv.parentNode.removeChild( oDiv );

					break ;

				}

				else

				{

					if ( element.parentNode.nextSibling )

						element.parentNode.parentNode.insertBefore( element, element.parentNode.nextSibling ) ;

					else

						element.parentNode.parentNode.appendChild( element ) ;

				}				

			}			

		}

	}	

}

FCKDrupalPageBreak.prototype.GetState = function()

{

	return ( FCK.EditMode == FCK_EDITMODE_WYSIWYG ? FCK_TRISTATE_OFF : FCK_TRISTATE_DISABLED ) ;

}

// Register the Drupal tag commands.

FCKCommands.RegisterCommand( 'DrupalPageBreak', new FCKDrupalPageBreak( 'Break' ) ) ;

// Create the Drupal tag buttons.

var oDrupalItem = new FCKToolbarButton( 'DrupalPageBreak', FCKLang.DrupalPageBreakTitle, FCKLang.DrupalPageBreakTooltip, FCK_TOOLBARITEM_ICONTEXT, true, true ) ;

oDrupalItem.IconPath = FCKConfig.PluginsPath + 'drupalpagebreak/drupalpagebreak.gif';

FCKToolbarItems.RegisterItem( 'DrupalPageBreak', oDrupalItem ) ;

// after switch in to source mode and back proccess page and insert fake

// image for break again

// Drupal Page Breaks Processor

var FCKDrupalPageBreaksProcessor = FCKDocumentProcessor.AppendNew() ;

FCKDrupalPageBreaksProcessor.ProcessDocument = function( document )

{

	// get all elements in FCK document

	var elements = document.getElementsByTagName( '*' ) ;

	// check every element for childNodes

	var i = 0;

	while (element = elements[i++]) {

		var nodes = element.childNodes;

		var j = 0;

		while (node = nodes[j++]) {

			if (node.nodeName == '#comment') {

				var re = /\{\d+\}/ ;

				var PContent;

				if (re.test(node.nodeValue))

					PContent = FCKConfig.ProtectedSource.Revert('<!--' + node.nodeValue + '-->', false);

				if (node.nodeValue == 'pagebreak' || PContent == '<!--pagebreak-->') {

					var oFakeImage = FCKDocumentProcessor_CreateFakeImage( 'FCK__PageBreak', node.cloneNode(true) ) ;

					oFakeImage.setAttribute( "_drupalpagebreak", "true" ) ;

					node.parentNode.insertBefore( oFakeImage, node ) ;

					node.parentNode.removeChild( node ) ;

				}

			}

		}

	}

	FCKDrupalBreak.prototype.MoveBreakOutsideElement();

}

if ( !FCK.Config.ProtectedSource._RevertOld )

	FCK.Config.ProtectedSource._RevertOld = FCK.Config.ProtectedSource.Revert ;

FCK.Config.ProtectedSource.Revert = function( html, clearBin )

{

	// Call the original code.

	var result = FCK.Config.ProtectedSource._RevertOld ( html, clearBin ) ;

	if ( typeof FCKDrupalPageBreak !="undefined" && typeof FCKDrupalBreak !="undefined" )

		var re = /<(p|div)>((?:<!--pagebreak-->|<!--break-->)+)<\/\1>/gi ;

	else if ( typeof FCKDrupalBreak !="undefined" )

		var re = /<(p|div)>(<!--break-->)+<\/\1>/gi ;

	else if ( typeof FCKDrupalPageBreak !="undefined" )

		var re = /<(p|div)>(<!--pagebreak-->)+<\/\1>/gi ;

	result = result.replace( re, '$2' );

	return result ;

}