/*----------------------------------------------------|
  | dTree 2.05 | www.destroydrop.com/javascript/tree/ |
  |---------------------------------------------------|
  | Copyright (c) 2002-2003 Geir Landro               |
  | Modified for Dokuwiki by Samuele Tognini          |
  |                                                   |
  | This script can be used freely as long as all     |
  | copyright messages are intact.                    |
  |                                                   |
  | Updated: 17.04.2003                               |
  |--------------------------------------------------*/
 
// Node object
function Node(dokuid, id, pid, name, url, title, target, icon, iconOpen, open) {
    this.dokuid = dokuid;
    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 = false;
}
// Tree object
function dTree(objName,objImg) {
    var objExt = indexmenu_findExt(objImg);
 
    this.config = {
	target: null,
	folderLinks: true,
	useSelection        : true,
	useCookies: true,
	useLines: true,
	useIcons: true,
	useStatusText : false,
	closeSameLevel : false,
	inOrder: false
    };
    this.icon = {
	root: objImg + 'base.'+objExt,
	folder: objImg + 'folder.'+objExt,
	folderH: objImg + 'folderh.'+objExt,
	folderOpen: objImg + 'folderopen.'+objExt,
	folderHOpen: objImg + 'folderhopen.'+objExt,
	node: objImg + 'page.'+objExt,
	empty: objImg + 'empty.'+objExt,
	line: objImg + 'line.'+objExt,
	join: objImg + 'join.'+objExt,
	joinBottom: objImg + 'joinbottom.'+objExt,
	plus: objImg + 'plus.'+objExt,
	plusBottom: objImg + 'plusbottom.'+objExt,
	minus: objImg + 'minus.'+objExt,
	minusBottom: objImg + 'minusbottom.'+objExt,
	nlPlus: objImg + 'nolines_plus.'+objExt,
	nlMinus: objImg + 'nolines_minus.'+objExt
    };
    this.obj = objName;
    this.aNodes = [];
    this.aIndent = [];
    this.root = new Node(false,-1);
    this.selectedNode = null;
    this.selectedFound = false;
    this.completed = false;
    this.currentNS=this.fcurrentNS();
    this.currentOpen=-1;
}
 
// Adds a new node to the node array
dTree.prototype.add = function(dokuid, id, pid, name, url, title, target, icon, iconOpen, open) {
    this.aNodes[this.aNodes.length] = new Node(dokuid, id, pid, name, url, title, target, icon, iconOpen, open);
};
 
// Open/close all nodes
dTree.prototype.openAll = function() {
    if (!this.getCookie('co' + this.obj)) {
	this.oAll(true);
    }
};
dTree.prototype.closeAll = function() {
    if (!this.getCookie('co' + this.obj)) {
	this.oAll(false);
    }
};
 
// Outputs the tree to the page
dTree.prototype.toString = function() {
    var str= '';
    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._hc && cn.dokuid === this.currentNS) { this.currentOpen=cn.id;}
	    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) ? ((!node.url) ? this.icon.folder : this.icon.folderH) : this.icon.node);}
	if (!node.iconOpen) {node.iconOpen = (node._hc) ? ((!node.url) ? this.icon.folderOpen : this.icon.folderHOpen) : 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._hc) ? 'nodeFdUrl' : 'nodeUrl')) : ((node._hc) ? 'nodeFdUrl' : 'nodeUrl')) + '" 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="" />';
        }
	if (node._ls) { 
	    this.aIndent.push(0);
	} else { 
	    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) {
	eNew = document.getElementById("s" + this.obj + id);
	if (!eNew ) {return;}
	if (this.selectedNode || this.selectedNode===0) {
	    eOld = document.getElementById("s" + this.obj + this.selectedNode);
	    eOld.className = "node";
	}
	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);
};
 
dTree.prototype.getOpenTo = function(nodes) {
    if (nodes === '') {
	this.openAll();
    } else if (!this.getCookie('co' + this.obj)) {
	var anodes=nodes.split(',');
	for (var n=0; n<anodes.length; n++) {
	    this.openTo(anodes[n],false);
	}
    }
};
 
// 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=/' +
    (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;
};
 
dTree.prototype.fcurrentNS = function (){
    var id=(window.indexmenu_ID) ? indexmenu_ID : "";
    var ns=id.lastIndexOf(":");
    if ( ns > -1){
	ns = id.substring(0,ns);
    }
    return ns;
};
 
dTree.prototype.openCurNS = function (){
    if (this.currentOpen > 0) {this.openTo(this.currentOpen,true);}
};
 
// 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() {
	var lastElement = this[this.length-1];
	this.length = Math.max(this.length-1,0);
	return lastElement;
    };
}