/*--------------------------------------------------|
| dTree 2.05 | www.destroydrop.com/javascript/tree/ |
|--------------------------------------------------*/
// 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,icon_Root) {
this.config={
target:null,
folderLinks:true,
useSelection:true,
useCookies:true,
useLines:true,
useIcons:true,
useStatusText:false,
closeSameLevel:false,
inOrder:false,
iconRoot :icon_Root
}
this.icon={
root:this.config.iconRoot+'img/base.gif',
folder:this.config.iconRoot+'img/folder.gif',
folderOpen:this.config.iconRoot+'img/folderopen.gif',
node:this.config.iconRoot+'img/page.gif',
empty:this.config.iconRoot+'img/empty.gif',
line:this.config.iconRoot+'img/line.gif',
join:this.config.iconRoot+'img/join.gif',
joinBottom:this.config.iconRoot+'img/joinbottom.gif',
plus:this.config.iconRoot+'img/plus.gif',
plusBottom:this.config.iconRoot+'img/plusbottom.gif',
minus:this.config.iconRoot+'img/minus.gif',
minusBottom:this.config.iconRoot+'img/minusbottom.gif',
nlPlus:this.config.iconRoot+'img/nolines_plus.gif',
nlMinus:this.config.iconRoot+'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;
}
};