# language: JSVM2

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

package com.eae.webfx.xtree;

import com.eae.webfx.xtree.WebFXTreeConfig;
import com.eae.webfx.xtree.WebFXTreeHandler;
import com.eae.webfx.xtree.WebFXTreeAbstractNode;
import com.eae.webfx.xtree.WebFXTreeItem;
import com.eae.webfx.xtree.WebFXUtil;
import com.eae.webfx.xtree.WebFXTree;

/**
 * Create a new WebFXLoadTree instance.
 * Inherit from WebFXTree
 * @author	Emil A Eklund (Modified by Wan Changhua)
 * @version	1.1, 07/01/05
 * @extends WebFXTree
 * @class This is the webfx tree class.  
 * @constructor
 * @param {String} sText
 * @param {String} sXmlSrc
 * @param {String} sAction
 * @param {String} sBehavior
 * @param {String} sIcon
 * @param {String} sOpenIcon
 * @return A new WebFXTree object
 */

class WebFXLoadTree extends WebFXTree (sText, sXmlSrc, sAction, sBehavior, sIcon, sOpenIcon)
{
	// call super
	//this.WebFXTree = WebFXTree;
	//this.WebFXTree(sText, sAction, sBehavior, sIcon, sOpenIcon);

	super.call(this, sText, sAction, sBehavior, sIcon, sOpenIcon);

	// setup default property values
	this.src = sXmlSrc;
	this.loading = false;
	this.loaded = false;
	this.errorText = "";

	// check start state and load if open
	if (this.open)
		WebFXUtil.startLoadXmlTree(this.src, this);
	else {
		// and create loading item if not
		this._loadingItem = new WebFXTreeItem(WebFXTreeConfig.loadingText);
		this.add(this._loadingItem);
	}
}

//WebFXLoadTree.prototype = new WebFXTree;

// override the expand method to load the xml file
//WebFXLoadTree.prototype._webfxtree_expand = WebFXTree.prototype.expand;

/**
 * Expands all child nodes of self, 
 * override the expand method to load the xml file.
 */
WebFXLoadTree.prototype.expand = function()
{
	if (!this.loaded && !this.loading) {
		// load
		WebFXUtil.startLoadXmlTree(this.src, this);
	}
	//this._webfxtree_expand();
	super.prototype.expand.call(this);
};


/**
 * Override the build method, builds an element of self in the given container.
 * If an container is not provided, the current postion parent node is the container.
 * Add by Wan Changhua (2005-07-01)
 * @param {Element} container
 */
WebFXLoadTree.prototype.build = function(container)
{
	if (container == null) {
		document.write(this.toString());
	}	else {
		container.innerHTML = this.toString();
	}
}