/*--------------------------------------------------|
| dTree 2.05 | www.destroydrop.com/javascript/tree/ |
|---------------------------------------------------|
| Copyright (c) 2002-2003 Geir Landrö               |
|                                                   |
| This script can be used freely as long as all     |
| copyright messages are intact.                    |
|                                                   |
| Updated: 17.04.2003                               |
|--------------------------------------------------*/

// Node object
function Node(id, pid, name, icon, iconOpen, line, sel, unsel, w1, w2, h1, niveau, url, title, target, open) {
	this.id = id;
	this.pid = pid;
	this.name = name;
	this.url = url;
	this.title = title;
	this.target = target;
	this.icon = icon;
	this.iconOpen = iconOpen;
	this.line = line;
	this.sel = sel;
	this.unsel = unsel;
	this.w1 = w1;
	this.w2 = w2;
	this.h1 = h1;
	this._io = open || false;
	this._is = false;
	this._ls = false;
	this._hc = false;
	this._ai = 0;
	this._p;
	this._niveau = niveau;
};

// Tree object
function dTree(objName) {
	this.config = {
		target					: null,
		folderLinks			: true,
		useSelection		: true,
		useCookies			: true,
		useLines				: true,
		useIcons				: true,
		useStatusText		: false,
		closeSameLevel	: true,
		inOrder					: false
	}
	this.icon = {
		root				: 'template/_img/_tree/base.gif',
		folder			: 'template/_img/_tree/folder.gif',
		folderOpen	: 'template/_img/_tree/folderopen.gif',
		node				: 'template/_img/_tree/page.gif',
		empty				: 'template/_img/_tree/empty.gif',
		line				: 'template/_img/_tree/line.gif',
		join				: 'template/_img/_tree/join.gif',
		joinBottom	: 'template/_img/_tree/joinbottom.gif',
		plus				: 'template/_img/_tree/plus.gif',
		plusBottom	: 'template/_img/_tree/plusbottom.gif',
		minus				: 'template/_img/_tree/minus.gif',
		minusBottom	: 'template/_img/_tree/minusbottom.gif',
		nlPlus			: 'template/_img/_tree/nolines_plus.gif',
		nlMinus			: 'template/_img/_tree/nolines_minus.gif'
	};
	this.obj = objName;
	this.aNodes = [];
	this.aIndent = [];
	this.root = new Node(-1);
	this.selectedNode = null;
	this.selectedFound = false;
	this.completed = false;
};

// Adds a new node to the node array
dTree.prototype.add = function(id, pid, name, icon, iconOpen, line, sel, unsel, w1, w2, h1, niveau, url, title, target, open) {
	if(pid != 0){
		icon = line;
		iconOpen = line;
	}
	this.aNodes[this.aNodes.length] = new Node(id, pid, name, icon, iconOpen, line, sel, unsel, w1, w2, h1, niveau, url, title, target, open);
};

// Open/close all nodes
dTree.prototype.openAll = function() {
	this.oAll(true);
};
dTree.prototype.closeAll = function() {
	this.oAll(false);
};

// Outputs the tree to the page
dTree.prototype.toString = function() {
	var str = '<div class="dtree">\n';
	if (document.getElementById) {
		if (this.config.useCookies) this.selectedNode = this.getSelected();
		str += this.addNode(this.root);
	} else str += 'Browser not supported.';
	str += '</div>';
	if (!this.selectedFound) this.selectedNode = null;
	this.completed = true;
	return str;
};

// Creates the tree structure
dTree.prototype.addNode = function(pNode) {
	var str = '';
	var n=0;
	if (this.config.inOrder) n = pNode._ai;
	for (n; n<this.aNodes.length; n++) {
		if (this.aNodes[n].pid == pNode.id) {
			var cn = this.aNodes[n];
			//cn._niveau = pNode.id;
			cn._p = pNode;
			cn._ai = n;
			this.setCS(cn);
			if (!cn.target && this.config.target) cn.target = this.config.target;
			if (cn._hc && !cn._io && this.config.useCookies) cn._io = this.isOpen(cn.id);
			if (!this.config.folderLinks && cn._hc) cn.url = null;
			if (this.config.useSelection && cn.id == this.selectedNode && !this.selectedFound) {
					cn._is = true;
					this.selectedNode = n;
					this.selectedFound = true;
			}
			str += this.node(cn, n);
			if (cn._ls) break;
		}
	}
	return str;
};

// Creates the node icon, url and text
dTree.prototype.node = function(node, nodeId) {
	var str = '<div class="dTreeNode"><table cellspacing="0" cellpadding="0"><tr><td style="height:100%;vertical-align:middle;"><table cellspacing="0" cellpadding="0" style="width:100%;height:100%;"><tr>' + this.indent(node, nodeId);
	if (this.config.useIcons) {
		//if (!node.icon) node.icon = (this.root.id == node.pid) ? this.icon.root : ((node._hc) ? this.icon.folder : this.icon.node);
		//if (!node.iconOpen) node.iconOpen = (node._hc) ? this.icon.folderOpen : this.icon.node;
//		if (this.root.id == node.pid) {
//			node.icon = this.icon.root;
//			node.iconOpen = this.icon.root;
//		}
		str += '<input type="hidden" id="i' + this.obj + nodeId + '"/>';
	}
	str += '</tr></table></td><td>';
	if (node.url) {
		str += '<a id="s' + this.obj + nodeId + '" class="';
			if(this.config.useSelection)
			{
				if(node._is) str += 'nodeSel'+node._niveau; 
				else if(node._io) str += 'node'; 
				else str += 'node';
			}
			else 'node';
		str += '" href="' + node.url + '"';
		if (node.title) str += ' title="' + node.title + '"';
		if (node.target) str += ' target="' + node.target + '"';
		if (this.config.useStatusText) str += ' onmouseover="window.status=\'' + node.name + '\';return true;" onmouseout="window.status=\'\';return true;" ';
		if (this.config.useSelection && ((node._hc && this.config.folderLinks) || !node._hc))
			str += ' onclick="javascript: ' + this.obj + '.s(' + nodeId + ');"';
		str += '>';
		
		if((node.sel != '') && (node.unsel != ''))
		{
			if(this.config.useSelection)
			{
				var img = '';
				if(node._is) img = node.sel; 
				else if(node._io) img = node.unsel; 
				else img = node.unsel;
			}
			else img = node.unsel;
			
			if (isLooser() & (img.substring(img.length-3, img.length).toUpperCase() == "PNG"))
			{
				str += '<div id="img' + this.obj + nodeId + '" style="cursor:pointer;width:' + node.w2 + 'px; height:' + node.h1 + 'px;filter:progid:DXImageTransform.Microsoft.AlphaImageLoader(src=' + img + ', sizingMethod=scale);\"></div>';
			}
			else
			{
				str += '<img id="img' + this.obj + nodeId + '" src="'+ img +'">';
			}
		}
		else str += node.name;
	}
	else if ((!this.config.folderLinks || !node.url) && node._hc && node.pid != this.root.id)
	{
		str += '<a href="javascript: ' + this.obj + '.o(' + nodeId + ');" class="';
		if(node._io) str += 'nodeSel0'; 
		else str += 'node';
		str += '">';
		
		if((node.sel != '') && (node.unsel != ''))
		{
			var img = '';
			if(node._io) img = node.sel; 
			else img = node.unsel;
			
			
			if (isLooser() & (img.substring(img.length-3, img.length).toUpperCase() == "PNG"))
			{
				str += '<div id="img' + this.obj + nodeId + '" style="cursor:pointer;width:' + node.w2 + 'px; height:' + node.h1 + 'px;filter:progid:DXImageTransform.Microsoft.AlphaImageLoader(src=' + img + ', sizingMethod=scale);\"></div>';
			}
			else
			{
				str += '<img id="img' + this.obj + nodeId + '" src="'+ img +'">';
			}
		}
		else str += node.name;
	}
		
	if (node.url || ((!this.config.folderLinks || !node.url) && node._hc)) str += '</a>';
	str += '</td></tr></table></div>';
	if (node._hc) {
		str += '<div id="d' + this.obj + nodeId + '" class="clip" style="display:' + ((this.root.id == node.pid || node._io) ? 'block' : 'none') + ';">';
		str += this.addNode(node);
		str += '</div>';
	}
	this.aIndent.pop();
	return str;
};

// Adds the empty and line icons
dTree.prototype.indent = function(node, nodeId) {
	var str = '';
	if (this.root.id != node.pid) {
		for (var n=0; n<this.aIndent.length; n++)
		{	
			if(n == 0 && this.config.useLines)
			{
				 str += '<td style="vertical-align:middle;">';
				 str += '<img src="' + this.icon.empty + '" alt="" />';
				 str += '</td>';
			}
			else
			{
				
				if(node.pid != 0) str += '<td style="vertical-align:middle;width:1px;height:100%;"><img src="' + node.line + '" alt="" width="1px" height="' + node.h1 + '"/></td><td style="width:3px;">&nbsp;</td>';
				else {
					str += '<td style="vertical-align:top;">';
					str += '<img src="' + ( (this.aIndent[n] == 1 && this.config.useLines) ? node.line : node.line ) + '"';
					str += ' alt="" />';
				 	str += '</td>';
				}
			}
		}
		(node._ls) ? this.aIndent.push(0) : this.aIndent.push(1);
		if (node._hc) {
			
			if(node.pid != 0) str += '<td id="j' + this.obj + nodeId + '" style="vertical-align:middle;width:1px;height:100%;"><img src="' + node.line + '" alt="" width="1px" height="' + node.h1 + '"/></td><td style="width:3px;">&nbsp;</td>';
			else
			{
				str += '<td style="vertical-align:middle;">';
				//str += '<a href="javascript: ' + this.obj + '.o(' + nodeId + ');">';
				str += '<img id="j' + this.obj + nodeId + '" src="';
				if(this.selectedNode == nodeId) str += node.iconOpen;
				else if (!this.config.useLines) str += (node._io) ? node.iconOpen : node.icon;
				else str += ( (node._io) ? ((node._ls && this.config.useLines) ? node.iconOpen : node.iconOpen) : ((node._ls && this.config.useLines) ? node.icon : node.icon ) );
				str += ' alt="" />';
				//str += '</a>';
				str += '</td>';
			}
		} 
		else if(this.selectedNode == nodeId)
		{
			if(node.pid != 0) str += '<td style="vertical-align:middle;width:1px;height:100%;"><img src="' + node.line + '" alt="" width="1px" height="' + node.h1 + '"/></td><td style="width:3px;">&nbsp;</td>';
			else {
				str += '<td style="vertical-align:middle;">';
				str += '<img src="' +node.iconOpen+ '" alt=""';
				str += '/>';
				str += '</td>';
			}
		}
		else
		{
			if(node.pid != 0) str += '<td style="vertical-align:middle;width:1px;height:100%;"><img src="' + node.line + '" alt="" width="1px" height="' + node.h1 + '"/></td><td style="width:3px;">&nbsp;</td>';
			else {
				str += '<td style="vertical-align:middle;">';
				str += '<img src="' + ( (this.config.useLines && node.pid == 0) ? ((node._ls) ? node.icon : node.icon ) : node.line) + '" alt="" ';
				str += '/>';
				str += '</td>';
			}
		}
	}
	return str;
};

// Checks if a node has any children and if it is the last sibling
dTree.prototype.setCS = function(node) {
	var lastId;
	for (var n=0; n<this.aNodes.length; n++) {
		if (this.aNodes[n].pid == node.id) node._hc = true;
		if (this.aNodes[n].pid == node.pid) lastId = this.aNodes[n].id;
	}
	if (lastId==node.id) node._ls = true;
};

// Returns the selected node
dTree.prototype.getSelected = function() {
	var sn = this.getCookie('cs' + this.obj);
	return (sn) ? sn : null;
};

// Highlights the selected node
dTree.prototype.s = function(id) {
	if (!this.config.useSelection) return;
	var cn = this.aNodes[id];
	if (cn._hc && !this.config.folderLinks) return;
	if (this.config.closeSameLevel) this.closeLevel(cn);
	if (this.selectedNode != id) {
		if (this.selectedNode || this.selectedNode==0) {
			var cn2 = this.aNodes[this.selectedNode];
			eOld = document.getElementById("s" + this.obj + this.selectedNode);
			eOld.className = "node";
			eOld2 = document.getElementById("img" + this.obj + this.selectedNode);
			eOld2.src = cn2.sel;
		}
		eNew = document.getElementById("s" + this.obj + id);
		eNew.className = 'nodeSel';
		eOld2 = document.getElementById("img" + this.obj + id);
		eOld2.src = cn.sel;
		this.selectedNode = id;
		if (this.config.useCookies) this.setCookie('cs' + this.obj, cn.id);
	}
};

// Toggle Open or close
dTree.prototype.o = function(id) {
	var cn = this.aNodes[id];
	this.nodeStatus(!cn._io, id, cn._ls);
	cn._io = !cn._io;
	if (this.config.closeSameLevel) this.closeLevel(cn);
	if (this.config.useCookies) this.updateCookie();
};

// Open or close all nodes
dTree.prototype.oAll = function(status) {
	for (var n=0; n<this.aNodes.length; n++) {
		if (this.aNodes[n]._hc && this.aNodes[n].pid != this.root.id) {
			this.nodeStatus(status, n, this.aNodes[n]._ls)
			this.aNodes[n]._io = status;
		}
	}
	if (this.config.useCookies) this.updateCookie();
};

// Opens the tree to a specific node
dTree.prototype.openTo = function(nId, bSelect, bFirst) {

	if (!bFirst) {
		for (var n=0; n<this.aNodes.length; n++) {
			if (this.aNodes[n].id == nId) {
				nId=n;
				break;
			}
		}
	}
	var cn=this.aNodes[nId];
	if (this.config.closeSameLevel) this.closeLevel(cn);
	if (cn.pid==this.root.id || !cn._p) return;
	cn._io = true;
	cn._is = bSelect;
	if (this.completed && cn._hc) this.nodeStatus(true, cn._ai, cn._ls);
	if (this.completed && bSelect) this.s(cn._ai);
	else if (bSelect) this._sn=cn._ai;
	this.openTo(cn._p._ai, false, true);
};

// Closes all nodes on the same level as certain node
dTree.prototype.closeLevel = function(node) {
	for (var n=0; n<this.aNodes.length; n++) {
		if (this.aNodes[n].pid == node.pid && this.aNodes[n].id != node.id && this.aNodes[n]._hc) {
			this.nodeStatus(false, n, this.aNodes[n]._ls);
			this.aNodes[n]._io = false;
			this.closeAllChildren(this.aNodes[n]);
		}
	}
}

// Closes all children of a node
dTree.prototype.closeAllChildren = function(node) {
	for (var n=0; n<this.aNodes.length; n++) {
		if (this.aNodes[n].pid == node.id && this.aNodes[n]._hc) {
			if (this.aNodes[n]._io) this.nodeStatus(false, n, this.aNodes[n]._ls);
			this.aNodes[n]._io = false;
			this.closeAllChildren(this.aNodes[n]);		
		}
	}
}

// Change the status of a node(open or closed)
dTree.prototype.nodeStatus = function(status, id, bottom) {
	eDiv	= document.getElementById('d' + this.obj + id);
	eJoin	= document.getElementById('j' + this.obj + id);
	if (this.config.useIcons) {
		eIcon	= document.getElementById('i' + this.obj + id);
		eIcon.src = (status) ? this.aNodes[id].iconOpen : this.aNodes[id].icon;
	}
	if(this.selectedNode == id) eJoin.src = this.aNodes[id].iconOpen;
	else {
		eJoin.src = (this.config.useLines)?
		((status)?((bottom)?this.aNodes[id].iconOpen:this.aNodes[id].iconOpen):((bottom)?this.aNodes[id].icon:this.aNodes[id].icon)):
		((status)?this.aNodes[id].iconOpen:this.aNodes[id].icon);
	}
	eDiv.style.display = (status) ? 'block': 'none';
};


// [Cookie] Clears a cookie
dTree.prototype.clearCookie = function() {
	var now = new Date();
	var yesterday = new Date(now.getTime() - 1000 * 60 * 60 * 24);
	this.setCookie('co'+this.obj, 'cookieValue', yesterday);
	this.setCookie('cs'+this.obj, 'cookieValue', yesterday);
};

// [Cookie] Sets value in a cookie
dTree.prototype.setCookie = function(cookieName, cookieValue, expires, path, domain, secure) {
	document.cookie =
		escape(cookieName) + '=' + escape(cookieValue)
		+ (expires ? '; expires=' + expires.toGMTString() : '')
		+ (path ? '; path=' + path : '')
		+ (domain ? '; domain=' + domain : '')
		+ (secure ? '; secure' : '');
};

// [Cookie] Gets a value from a cookie
dTree.prototype.getCookie = function(cookieName) {
	var cookieValue = '';
	var posName = document.cookie.indexOf(escape(cookieName) + '=');
	if (posName != -1) {
		var posValue = posName + (escape(cookieName) + '=').length;
		var endPos = document.cookie.indexOf(';', posValue);
		if (endPos != -1) cookieValue = unescape(document.cookie.substring(posValue, endPos));
		else cookieValue = unescape(document.cookie.substring(posValue));
	}
	return (cookieValue);
};

// [Cookie] Returns ids of open nodes as a string
dTree.prototype.updateCookie = function() {
	var str = '';
	for (var n=0; n<this.aNodes.length; n++) {
		if (this.aNodes[n]._io && this.aNodes[n].pid != this.root.id) {
			if (str) str += '.';
			str += this.aNodes[n].id;
		}
	}
	this.setCookie('co' + this.obj, str);
};

// [Cookie] Checks if a node id is in a cookie
dTree.prototype.isOpen = function(id) {
	var aOpen = this.getCookie('co' + this.obj).split('.');
	for (var n=0; n<aOpen.length; n++)
		if (aOpen[n] == id) return true;
	return false;
};

// If Push and pop is not implemented by the browser
if (!Array.prototype.push) {
	Array.prototype.push = function array_push() {
		for(var i=0;i<arguments.length;i++)
			this[this.length]=arguments[i];
		return this.length;
	}
};
if (!Array.prototype.pop) {
	Array.prototype.pop = function array_pop() {
		lastElement = this[this.length-1];
		this.length = Math.max(this.length-1,0);
		return lastElement;
	}
};