/**************************************************************************
	Copyright (c) 2001 Geir Landrö (drop@destroydrop.com)
	JavaScript Tree - www.destroydrop.com/hugi/javascript/tree/
	Version 0.96	

	This script can be used freely as long as all copyright messages are
	intact.
**************************************************************************/

/*
Note: changed some script for the public side
	  to make the tree open and show the
	  children as default
	  
changed	  : 2 May 03
developer : J. Bongar
*/

/*
Note: Changed some script for public side
      so that you do not have to have all the nodes
      loaded up. Only the ones when you click the (+) symbol
      will be loaded.  More posting but quicker for the initial load.

changed : 10 May 05
developer: L Sullivan
*/

/*
Note: Changed to allow specification of the target of the href

changed : 3 Oct 05
developer: J Orth
*/

// Arrays for nodes and icons
var nodes		= new Array();
var openNodes	= new Array();
var icons	= new Array(6);
var joinPages   = "";
var closedNodes	= new Array();

// Loads all icons that are used in the tree
function preloadIcons() {
	
	icons[0] = new Image();
	icons[1] = new Image();
	icons[2] = new Image();
	icons[3] = new Image();
	
	if(joinPages == "true") {
    icons[0].src = "/admin/images/plus.gif";
    icons[1].src = "/admin/images/plusbottom.gif";
    icons[2].src = "/admin/images/minus.gif";
    icons[3].src = "/admin/images/minusbottom.gif"
	}
  else{
		icons[0].src = "/admin/images/empty.gif";
		icons[1].src = "/admin/images/empty.gif";
		icons[2].src = "/admin/images/empty.gif";
		icons[3].src = "/admin/images/empty.gif";	
	}
}

// Create the tree
// overridePageImage -Added by Justin. If not empty string this value will
//                    override all page images (icons). Used for adding page,
//                    or displaying sitemap on public side (not tested)
//function createTree(arrName, overridePageImage, startNode, openNode) {

function createTree(arrName, overridePageImage, addpagejoints, closedNodesStr) {
  var l_target = "";

	startNode = null
	openNode  = null
	nodes = arrName;
  if(closedNodesStr != '' && closedNodesStr != null)
    closedNodes = closedNodesStr.split(",");
  
	// sets the true if page joins requires else false
	joinPages = addpagejoints;
	
	if (nodes.length > 0) {
		preloadIcons();
		if (startNode == null) startNode = 0;
		//if (openNode != 0 || openNode != null)setOpenNodes(openNode);
	
		if (startNode !=0) {
			var nodeValues = nodes[getArrayId(startNode)].split("|");

      l_target = "";

      if (nodeValues.length > 5) {
        if (nodeValues[5] != "") {
          l_target = " target=\"" + nodeValues[5] + "\"";
        }
      }
      
      if (nodeValues[3] != "") {
  			document.write("<a href=\"" + nodeValues[3] + "\"" + l_target + ">");
      }
      
      // Check to see if the override image is set
      if (overridePageImage != "")
        nodeValues[4] = overridePageImage;      
      document.write("<img src=\"/admin/images/" + nodeValues[4] + "\" align=\"absbottom\" border=\"0\" alt=\"\" />" + nodeValues[2]);

      if (nodeValues[3] != "") {
        document.write("</a>");
      }
      
      document.write("<br />");
		}
    else
    { 
      if (joinPages == "true") {
        document.write("<img src=\"/admin/images/base.gif\" align=\"absbottom\" alt=\"\" /><br />");
      }
      else {
        document.write("<br />");
      }
		}

		var recursedNodes = new Array();
		addNode(startNode, recursedNodes, overridePageImage);
	}
}
// Returns the position of a node in the array
function getArrayId(node) {
	for (i=0; i<nodes.length; i++) {
		var nodeValues = nodes[i].split("|");
		if (nodeValues[0]==node) return i;
	}
}
// Puts in array nodes that will be open
function setOpenNodes(openNode) {

	for (i=0; i<nodes.length; i++) {
		var nodeValues = nodes[i].split("|");
		if (nodeValues[0]==openNode) {
			openNodes.push(nodeValues[0]);
			setOpenNodes(nodeValues[1]);
		}
	} 
}
// Checks if a node is open
function isNodeOpen(node){
  if (joinPages == "true") {
    if(closedNodes.length != 0){
      for (i=0; i<closedNodes.length; i++){
	      if (closedNodes[i]==node)
        {
          return false;
        }
      }
    }
    else{
      for (i=0; i<openNodes.length; i++)
        if (openNodes[i]==node) return true;
      return false;
    }
  }
  else {
    if(closedNodes.length != 0){
	    for (i=0; i<closedNodes.length; i++){
	      if (closedNodes[i]==node)
           return false;
      }
    }
    else{
      for (i=0; i<openNodes.length; i++)
        if (openNodes[i]==node) 
    	     return false;
    }
  }
  return true;
}
// Checks if a node has any children
function hasChildNode(parentNode) {
	for (i=0; i< nodes.length; i++) {
		var nodeValues = nodes[i].split("|");
		if (nodeValues[1] == parentNode) return true;
	}
	return false; 
}
// Checks if a node is the last sibling
function lastSibling (node, parentNode) {
	var lastChild = 0;
	for (i=0; i< nodes.length; i++) {
		var nodeValues = nodes[i].split("|");
		if (nodeValues[1] == parentNode){
			lastChild = nodeValues[0];
    }
	}
	if (lastChild==node) return true;
	return false;
}
// Adds a new node in the tree
function addNode(parentNode, recursedNodes, overridePageImage) {
  var l_target = "";
  
	for (var i = 0; i < nodes.length; i++) {

		var nodeValues = nodes[i].split("|");
		if (nodeValues[1] == parentNode) {
			var ls	= lastSibling(nodeValues[0], nodeValues[1]);
			var hcn	= hasChildNode(nodeValues[0]);
			var ino = isNodeOpen(nodeValues[0]);

			// Write out line & empty icons
			for (g=0; g<recursedNodes.length; g++) {
				if (recursedNodes[g] == 1) {
					if(joinPages == "true")
						document.write("<img src=\"/admin/images/line.gif\" border=\"0\" align=\"absbottom\" alt=\"\" />");
					else
						document.write("<img src=\"/admin/images/empty.gif\" border=\"0\" align=\"absbottom\" alt=\"\" />");
				}else{
					document.write("<img src=\"/admin/images/empty.gif\" border=\"0\" align=\"absbottom\" alt=\"\" />");
				}
			}

			// put in array line & empty icons
			if (ls) recursedNodes.push(0);
			else recursedNodes.push(1);

			// Write out join icons
			if (hcn)
      {
				if (ls)
        {
          if (joinPages == "true")	{
            document.write("<a href=\"javascript: oc(" + nodeValues[0] + ", 1);\"><img id=\"join" + nodeValues[0] + "\" src=\"/admin/images/");
            if (ino) document.write("minus");
            else document.write("plus");
            document.write("bottom.gif\" align=\"absbottom\" alt=\"Open/Close node\" /></a>");
          }
					else {
						document.write("<img id=\"join" + nodeValues[0] + "\" border=\"0\" src=\"/admin/images/empty.gif\" align=\"absbottom\">");					
          }
				}
        else
        {
          if (joinPages == "true")	{
            document.write("<a href=\"javascript: oc(" + nodeValues[0] + ", 0);\"><img id=\"join" + nodeValues[0] + "\" src=\"/admin/images/");
            if (ino) document.write("minus");
            else document.write("plus");
            document.write(".gif\" align=\"absbottom\" alt=\"Open/Close node\" /></a>");
          }
					else {
						document.write("<img id=\"join" + nodeValues[0] + "\" border=\"0\" src=\"/admin/images/empty.gif\" align=\"absbottom\">");					
          }
				}
			}
      else
      {
				if (ls) {
          if (joinPages == "true")	{
            document.write("<img src=\"/admin/images/join.gif\" align=\"absbottom\" alt=\"\" />");
          }
					else {
						document.write("<img src=\"/admin/images/empty.gif\" border=\"0\" align=\"absbottom\" alt=\"\" />");
          }
        }
				else {
          if (joinPages == "true")	{
            document.write("<img src=\"/admin/images/joinbottom.gif\" align=\"absbottom\" alt=\"\" />");
          }
					else {
						document.write("<img src=\"/admin/images/empty.gif\" border=\"0\" align=\"absbottom\" alt=\"\" />");
          }
        }
			}

      l_target = "";

      if (nodeValues.length > 5) {
        if (nodeValues[5] != "") {
          l_target = " target=\"" + nodeValues[5] + "\"";
        }
      }
      
      if (nodeValues[3] != "") {
  			document.write("<a href=\"" + nodeValues[3] + "\"" + l_target + ">");
			}
      
      // Check to see if the override image is set
      if (overridePageImage != "")
        nodeValues[4] = overridePageImage;

      // Write out page icons
      document.write("<img id=\"icon" + nodeValues[0] + "\" border=\"0\" src=\"/admin/images/" + nodeValues[4] + "\" align=\"absbottom\" alt=\"Page\" />");
			
			// Write out node name
			document.write("<font class='link_general'>" + nodeValues[2] + "</font>");

			// End link
      if (nodeValues[3] != "") {
  			document.write("</a>");
      }
      
      document.write("<br />");
			
			// If node has children write out divs and go deeper
			if (hcn) {
				document.write("<div id=\"div" + nodeValues[0] + "\"");
					if (!ino) document.write(" style=\"display: none;\"");
				document.write(">");
				addNode(nodeValues[0], recursedNodes, overridePageImage);
				document.write("</div>");
			}
			
			// remove last line or empty icon 
			recursedNodes.pop();
		}
	}
}


// Opens or closes a node
function oc(node, bottom) {
    
	var theDiv = document.getElementById("div" + node);
	var theJoin	= document.getElementById("join" + node);
	var theIcon = document.getElementById("icon" + node);

	if (theDiv.style.display == 'none') {
		if(closedNodes.length != 0){
    		  location.href=PostList[node-1];

		}
		else{
		  if (bottom==1) theJoin.src = icons[3].src;
		  else theJoin.src = icons[2].src;
		  theDiv.style.display = '';
    } 
	} 
  else {
		if (bottom==1) theJoin.src = icons[1].src;
		else theJoin.src = icons[0].src;
		theDiv.style.display = 'none';
	}
}
// Push and pop not implemented in IE(crap!    don´t know about NS though)
if(!Array.prototype.push) {
	function array_push() {
		for(var i=0;i<arguments.length;i++)
			this[this.length]=arguments[i];
		return this.length;
	}
	Array.prototype.push = array_push;
}
if(!Array.prototype.pop) {
	function array_pop(){
		lastElement = this[this.length-1];
		this.length = Math.max(this.length-1,0);
		return lastElement;
	}
	Array.prototype.pop = array_pop;
}