if (!Bs_Objects)
{
	var Bs_Objects = [];
};

function Bs_Tree()
{
	this._id;
	this._objectId;
	this.autoCollapse = false;
	this.lookAhead = 2;
	this.captionBgColor= "white";
	this.linkStyle;
	this.divStyle = 'font-family: Arial, Helvetica, sans-serif; font-size: 11px;';
	this.showPseudoElement = false;
	this.useCheckboxSystem = false;
	this.checkboxSystemWalkTree = 3;
	this.checkboxSystemIfPartlyThenFull = true;
	this.checkboxSystemImgDir;
	this.checkboxSystemGuiNochange;
	this.useRadioButton = false;
	this.radioButtonName;
	this.imageDir;// = '../image/tree/win2k/';
	this.imageHeight = 16;
	this.rootCaption;//根结点标题，Added by dubf on 2004/4/23
	this.rootUrl;//根结点Url，Added by dubf on 2004/4/27
	this.rootTarget;//根结点Target，Added by dubf on 2004/4/27
	this.showRootUrl =false; //是否显示根结点Url，Added by dubf on 2004/4/27
	this.useFolderIcon = true;
	this.useLeaf = true;
	this.walkTree = true;
	this.useAutoSequence = true;
	this.draggable = false;
	this._clearingHouse = new Array;
	this._pseudoElement;
	this._currentActiveElement;
	this._elementSequence = 0;
	this._errorArray;
	this.stopWatch;
	this._constructor = function()
	{
		this._id = Bs_Objects.length;
		//alert(this._id);
		Bs_Objects[this._id] = this;
		this._objectId = "Bs_Tree_"+this._id;
		var a = [];
		a['id']= 'pseudoElement001';
		a['caption']= "root";
		a['url'] = "";
		a['target'] = "";
		a['isOpen']= true;
		this._pseudoElement = this._createTreeElement(a, 0);
	}

    //Added by dubf on 2004/4/23，为了设置根结点属性
	this.setRoot = function()
	{
	    if (typeof(this._pseudoElement)=='undefined') return;
	    //alert(this.rootCaption);
	    this._pseudoElement['caption'] = this.rootCaption;
	    if (this.showRootUrl)
	    {
            this._pseudoElement['url'] = this.rootUrl;
            this._pseudoElement['target'] = this.rootTarget;
	    }
	}

	this.initByArray = function(arr)
	{
		for (var i=0; i<arr.length; i++)
		{
			var e = this._createTreeElement(arr[i], 1);
			if (e == false)
			{
				return false;
			}
		
			this._pseudoElement.addChild(e);
		}
		return true;
	}

	this.getActiveElement = function()
	{
		if (typeof(this._currentActiveElement) != 'undefined')
			return this._currentActiveElement;
		return false;
	}

	this.setActiveElement = function(treeElement)
	{
		alert('hi');
		this._currentActiveElement = treeElement;
	}

	this._createTreeElement = function(arr, level)
	{
		if (typeof(level) == 'undefined') level = 1;
		var e = new Bs_TreeElement();
		var status = e.initByArray(arr, this, level);
		if (!status)
		{
			this._addError(e.getLastError());
			return false;
		}
		this._clearingHouse[e.id] = e;
		if (arr['children'])
		{
			if ((this.useCheckboxSystem && (this.checkboxSystemWalkTree >= 2))
				|| e.isOpen
				|| ((this.lookAhead +2) > level)
				|| (this.lookAhead == -1)
				|| ((typeof(e.parent) == 'object') && (e.parent.isOpen)))
			{
				for (var i=0; i<arr['children'].length; i++)
				{
					var newE = this._createTreeElement(arr['children'][i], level +1);
					if (!newE) return false;
					e.addChild(newE);
				}

			} else {
				e._undoneChildren = arr['children'];
			}
		}
		return e;
	}

	this.getElement = function(elementId)
	{
		if (elementId == 0) return this._pseudoElement;
		if (typeof(this._clearingHouse[elementId]) == 'object')
		{
			return this._clearingHouse[elementId];
		} else {
			return false;
		}
	}

	this.removeElement = function(elementId)
	{
		if (typeof(this._clearingHouse[elementId]) == 'undefined') return false;
		var elm = this._clearingHouse[elementId];
		if ((typeof(elm.parent) == 'object') && (typeof(elm.parent._children) == 'object'))
		{
			for (var i=0; i<elm.parent._children.length; i++)
			{
				if (elm.parent._children[i].id == elementId)
				{
					elm.parent._children.deleteItem(i);
					break;
				}
			}
		}
		this._clearingHouse.deleteItemHash(elementId);
		for (var i=0; i<elm._children.length; i++)
		{
			this._clearingHouse.deleteItemHash(elm._children[i].id);
		}

		if ((typeof(elm.parent) == 'object') && (elm.parent._isOutrendered))
		{
			elm.parent.render(true, true);
		}
		return true;
	}

	this.draw = function()
	{
		var content = this._pseudoElement.render();
		document.writeln(content[0]);
		eval(content[1]);
	}

	this.toHtml = function()
	{
		return this._pseudoElement.render();
	}

	this.executeOnElement = function(id, func, params)
	{
		if (this._clearingHouse[id])
		{
			if (this._clearingHouse[id][func])
			{
				if (params)
				{
					switch (params.length)
					{
						case 1:
							return this._clearingHouse[id][func](params[0]);
							break;
						case 2:
							return this._clearingHouse[id][func](params[0], params[1]);
							break;
						case 3:
							return this._clearingHouse[id][func](params[0], params[1], params[2]);
							break;
						case 4:
							return this._clearingHouse[id][func](params[0], params[1], params[2], params[3]);
							break;
					}
				} else {
					return this._clearingHouse[id][func]();
				}
			}
		}
		return;
	}

	this.getJavascriptCode = function()
	{
		return this._pseudoElement.getJavascriptCode('a', true);
	}

	this.elementToggleOpenClose = function(id)
	{
		this._clearingHouse[id].toggleOpenClose();
	}

	this.elementOpenWalkUp = function(id)
	{
		if (typeof(this._clearingHouse[id]) != 'undefined')
		{
			var elm = this._clearingHouse[id];
			elm.open(true);
			if (typeof(elm.parent) != 'undefined')
				this.elementOpenWalkUp(elm.parent.id);
		} else {
			return false;
		}
		return true;
	}

	this.elementCloseWalkUp = function(id)
	{
		if (typeof(this._clearingHouse[id]) != 'undefined')
		{
			var elm = this._clearingHouse[id];
			elm.close(true);
			if (typeof(elm.parent) != 'undefined')
				this.elementCloseWalkUp(elm.parent.id);
		} else {
			return false;
		}
		return true;
	}

	this.elementCloseWalkDown = function(id)
	{
		if (typeof(id) == 'undefined')
		{
			var elm = this._pseudoElement;
		} else if (typeof(this._clearingHouse[id]) != 'undefined') {
			var elm = this._clearingHouse[id];
			elm.close(true);
		} else {
			return false;
		}
		if (typeof(elm._children) != 'undefined')
		{
			for (var i=0; i<elm._children.length; i++)
			{
				this.elementCloseWalkDown(elm._children[i].id);
			}
		}
		return true;
	}

	this.elementOpen = function(id)
	{
		if (typeof(this._clearingHouse[id]) != 'undefined')
		{
			this._clearingHouse[id].open();
		}
	}

	this.elementClose = function(id)
	{
		this._clearingHouse[id].close();
	}

	this.openPath = function(data, valueType)
	{
		var elm = this.getElementByCaptionPath(data);
		if (elm == false) return false;
		this.elementOpenWalkUp(elm.id);
		return true;
	}

	this.getElementByCaptionPath = function(data)
	{
		var elm = this._pseudoElement;
		for (var i=0; i<data.length; i++)
		{
			var newElm = null;
			for (var j=0; j<elm._children.length; j++)
			{
				if (elm._children[j].caption == data[i])
				{
					newElm = elm._children[j];
					elm = newElm;
					if (typeof(elm._undoneChildren) == 'object')
					{
						for (var k=0; k<elm._undoneChildren.length; k++)
						{
							var newE = this._createTreeElement(elm._undoneChildren[k], elm._level +1);
							elm.addChild(newE);
						}
						elm._undoneChildren = false;
					}
					break;
				}
			}

			if (newElm == null) return false;
		}
		return newElm;
	}

	this.elementCheckboxEvent = function(id, value)
	{
		this._clearingHouse[id].checkboxEvent(value);
	}

	this.debugDumpTree = function(elm, indent)
	{
		if (typeof(elm) == 'undefined')
		{
			elm    = this._pseudoElement;
			indent = '';
			var firstCall = true;
		}

		var ret = '';
		if (typeof(elm._children) == 'object')
		{
			for (var i=0; i<elm._children.length; i++)
			{
				ret += indent + i + ': ' + elm._children[i].id + ': ' + elm._children[i].caption + "\n";
				ret += this.debugDumpTree(elm._children[i], indent + '  ');
			}
		}

		if (firstCall)
		{
			alert(ret);
		} else {
			return ret;
		}
	}

	this._addError = function(str)
	{
		if (typeof(this._errorArray) == 'undefined')
		{
			this._errorArray = new Array(str);
		} else {
			this._errorArray[this._errorArray.length] = str;
		}
	}

	this.getLastError = function()
	{
		if (typeof(this._errorArray) != 'undefined')
		{
			if (this._errorArray.length > 0)
			{
				return this._errorArray[this._errorArray.length -1];
			}
		}
		return false;
	}

	this.old_drawInto = function(id)
	{
		var content = this._pseudoElement.render();
		var e = document.getElementById(id);
		if (e)
		{
			e.innerHTML = content[0];
			if ('' != content[1])	eval(content[1]);
		}
	}

	this._imgPreload = function()
	{
		var id = this.globalId;
		var e  = document.getElementById(id);
		var ii = 0;
		var outTemp = new Array();
		outTemp[ii++] = '<img src="' + this.imageDir + 'line1.gif" border="0" style="display:none;">';
		outTemp[ii++] = '<img src="' + this.imageDir + 'line2.gif" border="0" style="display:none;">';
		outTemp[ii++] = '<img src="' + this.imageDir + 'line3.gif" border="0" style="display:none;">';
		outTemp[ii++] = '<img src="' + this.imageDir + 'minus1.gif" border="0" style="display:none;">';
		outTemp[ii++] = '<img src="' + this.imageDir + 'minus2.gif" border="0" style="display:none;">';
		outTemp[ii++] = '<img src="' + this.imageDir + 'minus3.gif" border="0" style="display:none;">';
		outTemp[ii++] = '<img src="' + this.imageDir + 'plus1.gif" border="0" style="display:none;">';
		outTemp[ii++] = '<img src="' + this.imageDir + 'plus2.gif" border="0" style="display:none;">';
		outTemp[ii++] = '<img src="' + this.imageDir + 'plus3.gif" border="0" style="display:none;">';
		outTemp[ii++] = '<img src="' + this.imageDir + 'line3.gif" border="0" style="display:none;">';
		outTemp[ii++] = '<img src="' + this.imageDir + 'empty.gif" border="0" style="display:none;">';
		outTemp[ii++] = '<img src="' + this.imageDir + 'leaf.gif" border="0" style="display:none;">';
		outTemp[ii++] = '<img src="' + this.imageDir + 'folderClosed.gif" border="0" style="display:none;">';
		outTemp[ii++] = '<img src="' + this.imageDir + 'folderOpen.gif" border="0" style="display:none;">';
		if (e) e.innerHTML = outTemp.join('');
	}

	this._afterImgPreload = function()
	{
		var id = this.globalId;
		var content = this._pseudoElement.render();
		var e       = document.getElementById(id);
		if (e)
		{
			e.innerHTML = content[0];
			if ('' != content[1])
			{
				eval(content[1]);
			}
		}
	}

	this.drawInto = function(id)
	{
		this.globalId = id;
		setTimeout('Bs_Objects['+this._id+']._imgPreload()', 0);
		setTimeout('Bs_Objects['+this._id+']._afterImgPreload()',500);
	}

	this._constructor();
}