# language: JSVM2

/**
 * @fileoverview com.eae.webfx.xtree.WebFXTreeHandler class {@link http://jsvm.homolo.com/}
 * @file		WebFXTreeHandler.jsc
 * @author	Emil A Eklund
 * @Modifier: Changhua Wan * @version	1.1, 07/01/05
 */


package com.eae.webfx.xtree;

import js.lang.System;
import js.io.Cookie;

class WebFXTreeHandler ()
{
}


WebFXTreeHandler.idCounter = 0;
WebFXTreeHandler.idPrefix  = "webfx-tree-object-";
WebFXTreeHandler.all       = {};
WebFXTreeHandler.behavior  = null;
WebFXTreeHandler.selected  = null;
WebFXTreeHandler.onSelect  = null; /* should be part of tree, not handler */

/**
 *
 */
WebFXTreeHandler.getId     = function()
{
	return this.idPrefix + this.idCounter++;
}

WebFXTreeHandler.toggle    = function (oItem)
{
	this.all[oItem.id.replace('-plus','')].toggle();
}
WebFXTreeHandler.select    = function (oItem)
{
	this.all[oItem.id.replace('-icon','')].select();
}
WebFXTreeHandler.focus     = function (oItem)
{
	this.all[oItem.id.replace('-anchor','')].focus();
}
WebFXTreeHandler.blur      = function (oItem)
{
	this.all[oItem.id.replace('-anchor','')].blur();
}
WebFXTreeHandler.keydown   = function (oItem, e)
{
	return this.all[oItem.id].keydown(e.keyCode);
}

WebFXTreeHandler.cookies   = new js.io.Cookie();

WebFXTreeHandler.insertHTMLBeforeEnd	=	function (oElement, sHTML)
{
		if (oElement.insertAdjacentHTML != null)
		{
			oElement.insertAdjacentHTML("BeforeEnd", sHTML);
			return;
		}
		var df;	// DocumentFragment
		var r = oElement.ownerDocument.createRange();
		r.selectNodeContents(oElement);
		r.collapse(false);
		df = r.createContextualFragment(sHTML);
		oElement.appendChild(df);
}

/**
 * adds by Wan Changhua (2005-11-04)
 */
WebFXTreeHandler.getObjectById   = function (sId)
{
	return this.all[sId];
}

/**
 * event handle
 * adds by Wan Changhua (2005-11-04)
 */
WebFXTreeHandler.check   = function (e)
{
	var evt = e || event;
	var elm = System.isIeBrowser() ? evt.srcElement : evt.currentTarget;
	var node = WebFXTreeHandler.getObjectById(elm.getAttribute("oid"));
	var tree = node.getRootNode();
	var hdle = tree.onCheck;
	if (typeof(hdle) == "function")
	{
		if (hdle(node, tree) == false)
		{
			if (System.isIeBrowser())
			{
				event.returnValue = false;
			}
			else
			{
				evt.preventDefault();
			}
		}			
	}
}