/*--------------------------------------------------|
| 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
_dtree_iconrep = './img/';

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 = testicondirectory(icon);
	this.iconOpen = testicondirectory(iconOpen);
	this._io = open || false;
	this._is = false;
	this._ls = false;
	this._hc = false;
	this._ai = 0;
	this._p;
	this.expanded = false;
};


function testicondirectory(iconeatester) {
	// si l'icone n'existe pas alors une chaine vide on sort de suite
	if (!iconeatester) return;		
	if (iconeatester.length==0) return;		

	// si l'icone contient un chemin alors on ne rajoute pas le chemin  implicite
	if (iconeatester.indexOf('/')==-1) 
		return _dtree_iconrep+iconeatester;
	else
		return iconeatester;
}

// Tree object
// iconepage = 0, l'extremite de la branche est une page
// iconepage = 1, l'extremite de la branche est un dossier

function dTree(objName,iconepage) {

	this.config = {
		target				: null,
		folderLinks			: true,
		useSelection		: true,
		useCookies			: true,
		useLines			: true,
		useIcons			: true,
		useStatusText		: false,
		closeSameLevel	    : false,
		inOrder				: true,
		readOnly            : false,
		expander            : true 			
	}

	this.icon = {
		root	 	    : 'home.gif',
		folder			: 'folder.gif',
		folderOpen	    : 'folderopen.gif',
		node			: 'page.gif',
		empty			: 'empty.gif',
		line			: 'line.gif',
		join			: 'join.gif',
		joinBottom	    : 'joinbottom.gif',
		plus			: 'plus.gif',
		plusBottom  	: 'plusbottom.gif',
		minus			: 'minus.gif',
		minusBottom  	: 'minusbottom.gif',
		nlPlus			: 'nolines_plus.gif',
		nlMinus			: 'nolines_minus.gif'
	};
	if (iconepage==1) {
	   this.icon.node = 'folder.gif';	
	}

	this.obj = objName;
	this.aNodes = [];
	this.aIndent = [];
	this.root = new Node(-1);
	this.selectedNode = null;
	this.selectedFound = false;
	this.completed = false;

};

// cette fonction est rajoutee pour faciliter la gestion des chemins d'acces aux icones :
// si le nom de l'icone contient un chemin '../img/' ou './img/' alors rien
// sinon on ajoute au nom de fichier le chemin "rep" pour tous
dTree.prototype.icondirectory = function(rep) {
	_dtree_iconrep = rep;
	this.icon.root        = testicondirectory(this.icon.root);
	this.icon.folder      = testicondirectory(this.icon.folder);
	this.icon.folderOpen  = testicondirectory(this.icon.folderOpen);
	this.icon.node        = testicondirectory(this.icon.node);
	this.icon.empty       = testicondirectory(this.icon.empty);
	this.icon.line        = testicondirectory(this.icon.line);
	this.icon.join        = testicondirectory(this.icon.join);
	this.icon.joinBottom  = testicondirectory(this.icon.joinBottom);
	this.icon.plus        = testicondirectory(this.icon.plus);
	this.icon.plusBottom  = testicondirectory(this.icon.plusBottom);
	this.icon.minus       = testicondirectory(this.icon.minus);
	this.icon.minusBottom = testicondirectory(this.icon.minusBottom);
	this.icon.nlPlus      = testicondirectory(this.icon.nlPlus);
	this.icon.nlMinus     = testicondirectory(this.icon.nlMinus);
};

// 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);
};

this.expanded


dTree.prototype.closeAll = function() {
	this.oAll(false);
};

// appelee par la racine de l'arbre
dTree.prototype.open_or_close_All = function() {
	this.expanded = !this.expanded;
	this.oAll(this.expanded);
};


// 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) +'"';
		// SI LE NOEUD EST AUSSI LA RACINE DE L'ARBRE ALORS L'ACTION EST L'EXTENSION OU LE REPLI COMPLET
		if (this.root.id==node.pid && !this.config.readOnly && this.config.expander) {
			str += '" style="cursor:hand;" alt="Etendre/Replier l\'arbre" onClick="javascript:'+this.obj+'.open_or_close_All()"/>';
		} else {
			str += '" alt="" />';
		}
		str += ' ';
	}
	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) {
			if (!this.config.readOnly)
				str += '<a href="javascript: ' + this.obj + '.o(' + nodeId + ')">';

			str += '<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="" />';
			if (!this.config.readOnly)
				str += '</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);
			if (eOld) eOld.className = "node";
		}
		eNew = document.getElementById("s" + this.obj + id);
		if (eNew) 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 * 365);
	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;
	}
};