/*--------------------------------------------------|



| 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, url, title, target, icon, iconOpen, 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._io = open || false;



	this._is = false;



	this._ls = false;



	this._hc = false;



	this._ai = 0;



	this._p;



};







// Tree object



function dTree(objName) {



	this.config = {



		target					: null,



		folderLinks			: true,



		useSelection		: true,



		useCookies			: true,



		useLines				: true,



		useIcons				: true,



		useStatusText		: false,



		closeSameLevel	: false,



		inOrder					: true



	}



	this.icon = {



		//root				: 'tools/dtree/img/base.gif',

        root                                : 'tools/dtree/img/spacer.gif',



		folder			: 'tools/dtree/img/folder.gif',



		folderOpen	: 'tools/dtree/img/folderopen.gif',



		//node				: 'img/page.gif',

                node                                : 'tools/dtree/img/spacer.gif',



		empty				: 'tools/dtree/img/empty.gif',



		line				: 'tools/dtree/img/line.gif',



		join				: 'tools/dtree/img/join.gif',



		joinBottom	: 'tools/dtree/img/joinbottom.gif',



		plus				: 'tools/dtree/img/plus.gif',



		plusBottom	: 'tools/dtree/img/plusbottom.gif',



		minus				: 'tools/dtree/img/minus.gif',



		minusBottom	: 'tools/dtree/img/minusbottom.gif',



		nlPlus			: 'tools/dtree/img/nolines_plus.gif',



		nlMinus			: 'tools/dtree/img/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, url, title, target, icon, iconOpen, open) {



	this.aNodes[this.aNodes.length] = new Node(id, pid, name, url, title, target, icon, iconOpen, 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._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">' + 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 += '<img id="i' + this.obj + nodeId + '" src="' + ((node._io) ? node.iconOpen : node.icon) + '" alt="" />';



	}



	if (node.url) {



		str += '<a id="s' + this.obj + nodeId + '" class="' + ((this.config.useSelection) ? ((node._is ? 'nodeSel' : 'node')) : 'node') + '" 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 += '>';



	}



	else if ((!this.config.folderLinks || !node.url) && node._hc && node.pid != this.root.id)



		str += '<a href="javascript: ' + this.obj + '.o(' + nodeId + ');" class="node">';



	str += node.name;



	if (node.url || ((!this.config.folderLinks || !node.url) && node._hc)) str += '</a>';



	str += '</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++)



			str += '<img src="' + ( (this.aIndent[n] == 1 && this.config.useLines) ? this.icon.line : this.icon.empty ) + '" alt="" />';



		(node._ls) ? this.aIndent.push(0) : this.aIndent.push(1);



		if (node._hc) {



			str += '<a href="javascript: ' + this.obj + '.o(' + nodeId + ');"><img id="j' + this.obj + nodeId + '" src="';



			if (!this.config.useLines) str += (node._io) ? this.icon.nlMinus : this.icon.nlPlus;



			else str += ( (node._io) ? ((node._ls && this.config.useLines) ? this.icon.minusBottom : this.icon.minus) : ((node._ls && this.config.useLines) ? this.icon.plusBottom : this.icon.plus ) );



			str += '" alt="" /></a>';



		} else str += '<img src="' + ( (this.config.useLines) ? ((node._ls) ? this.icon.joinBottom : this.icon.join ) : this.icon.empty) + '" alt="" />';



	}



	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.selectedNode != id) {



		if (this.selectedNode || this.selectedNode==0) {



			eOld = document.getElementById("s" + this.obj + this.selectedNode);



			eOld.className = "node";



		}



		eNew = document.getElementById("s" + this.obj + id);



		eNew.className = "nodeSel";



		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 (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;



	}



	eJoin.src = (this.config.useLines)?



	((status)?((bottom)?this.icon.minusBottom:this.icon.minus):((bottom)?this.icon.plusBottom:this.icon.plus)):



	((status)?this.icon.nlMinus:this.icon.nlPlus);



	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;



	}



};