/**
 * Copyright (C) 2009 eXo Platform SAS.
 * 
 * This is free software; you can redistribute it and/or modify it
 * under the terms of the GNU Lesser General Public License as
 * published by the Free Software Foundation; either version 2.1 of
 * the License, or (at your option) any later version.
 * 
 * This software is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
 * Lesser General Public License for more details.
 * 
 * You should have received a copy of the GNU Lesser General Public
 * License along with this software; if not, write to the Free
 * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
 * 02110-1301 USA, or see the FSF site: http://www.fsf.org.
 */

function Spliter() {	
} ;
Spliter.prototype.exeRowSplit = function(e , markerobj) {
	_e = (window.event) ? window.event : e ;
	this.posY = _e.clientY; 
	var marker = (typeof(markerobj) == "string")? document.getElementById(markerobj):markerobj ;
	this.beforeArea = eXo.core.DOMUtil.findPreviousElementByTagName(marker, "div") ;
	this.afterArea = eXo.core.DOMUtil.findNextElementByTagName(marker, "div") ;	
	this.beforeArea.style.height = this.beforeArea.offsetHeight + "px" ;
	this.afterArea.style.height = this.afterArea.offsetHeight + "px" ;	
	this.beforeY = this.beforeArea.offsetHeight ;
	this.afterY = this.afterArea.offsetHeight ;
	document.onmousemove = eXo.core.Spliter.adjustHeight ;	
	document.onmouseup = eXo.core.Spliter.clear ;
} ;
Spliter.prototype.adjustHeight = function(evt) {
	evt = (window.event) ? window.event : evt ;
	var Spliter = eXo.core.Spliter ;
	var delta = evt.clientY - Spliter.posY ;
	var afterHeight = (Spliter.afterY - delta) ;
	var beforeHeight = (Spliter.beforeY + delta) ;
	if (beforeHeight <= 0  || afterHeight <= 0) return ;
	Spliter.beforeArea.style.height =  beforeHeight + "px" ;
	Spliter.afterArea.style.height =  afterHeight + "px" ;	
} ;
Spliter.prototype.clear = function() {
	document.onmousemove = null ;
} ;
eXo.core.Spliter = new Spliter() ;