资源管理树型菜单问题,高手进来看看,高分酬谢!

Question

哈哈，兄弟，这就要看您的源程序了。
javascript上的功夫

Answer 1

javascript的代码如下:
function PreLoad(){
for(i in Icon){
var tem=Icon[i]
Icon[i]=new Image()
Icon[i].src=tem
}
}
PreLoad()function TreeView(obj,target,ExpandOne){
this.obj=obj;
this.Tree=new Node(0)
this.Root=null
this.Nodes=new Array()
this.target=target?target:"_blank";
this.ie=document.all?1:0;
this.ExpandOne=ExpandOne?1:0
}function Node(id,pid,txt,link,title,target,xicon){
this.Index=null;
this.id=id;
this.pid=pid
this.parent=null
this.txt=txt?txt:"New Item"
this.link=link
this.title=title?title:this.txt
this.target=target
this.xicon=xicon
this.indent=""
this.hasChild=false;
this.lastNode=false;
this.open=false
}TreeView.prototype.add=function(id,pid,txt,link,title,target,xicon){
target=target?target:this.target
var nNode=new Node(id,pid,txt,link,title,target,xicon);
if(pid==this.Tree.id)nNode.open=true;
nNode.Index=this.Nodes.length
this.Nodes[this.Nodes.length]=nNode
}TreeView.prototype.InitNode=function(oNode){
var last;
for(i=0;i<this.Nodes.length;i++){
if(this.Nodes[i].pid==oNode.id){this.Nodes[i].parent=oNode;oNode.hasChild=true}
if(this.Nodes[i].pid==oNode.pid)last=this.Nodes[i].id
}
if(last==oNode.id)oNode.lastNode=true
}TreeView.prototype.DrawLine=function(pNode,oNode){
oNode.indent=pNode.indent+(oNode.pid!=this.Tree.id&&oNode.pid!=this.Root.id?("<img align='absmiddle' src='"+(pNode.lastNode?Icon.blank.src:Icon.line.src)+"'>"):'')
}TreeView.prototype.DrawNode=function(nNode,pNode){
var str=""
var indents=""
var nid=nNode.id
var nIndex=nNode.Index;
this.DrawLine(pNode,nNode)
if(nNode.hasChild)
indents=nNode.indent+(this.Tree.id!=nNode.pid?("<img align='absmiddle'  onclick='"+this.obj+".Toggle("+nIndex+",this)' src='"+(nNode.lastNode?(nNode.open?Icon.minusbottom.src:Icon.plusbottom.src):(nNode.open?Icon.minus.src:Icon.plus.src))+"' id='icon"+nid+"' border=0>"):"")
else
indents=nNode.indent+(nNode.pid==this.Tree.id?'':("<img align='absmiddle' src='"+(nNode.lastNode?Icon.joinbottom.src:Icon.join.src)+"'>"))
indents+="<img id='folder"+nid+"' align='absmiddle' src='"+(nNode.xicon?nNode.xicon:(nNode.hasChild?(nNode.open?Icon.open.src:Icon.close.src):Icon.file.src))+"'>"
str+="<div class='node'><nobr>"+indents+this.DrawLink(nNode)+"</nobr></div>"
if(nNode.hasChild){
str+="<div id='Child"+nid+"' style='display:"+(nNode.open?"":"none")+"'>"
str+=this.DrawTree(nNode)
str+="</div>"
}
return str;
}TreeView.prototype.DrawTree=function(pNode){
var str=""
for(var i=0;i<this.Nodes.length;i++)
if(this.Nodes[i].pid==pNode.id)
str+=this.DrawNode(this.Nodes[i],pNode)
return str
}TreeView.prototype.DrawLink=function(oNode){
var str=""
str+=" <span id='NodeItem"+oNode.id+"' tabindex='1' title='"+oNode.title+"' onclick='"+this.obj+".Select(this)'>"+(oNode.link?("<a href='"+oNode.link+"' target='"+oNode.target+"'>"+oNode.txt+"</a>"):oNode.txt)+"</span>"
return str
}
TreeView.prototype.toString=function(){
var str=""
for(var i=0;i<this.Nodes.length;i++){
if(!this.Root)
if(this.Nodes[i].pid==this.Tree.id)this.Root=this.Nodes[i]
this.InitNode(this.Nodes[i])
}
str+=this.DrawTree(this.Tree)
return str
}TreeView.prototype.Toggle=function(nIndex,o){
var nNode=this.Nodes[nIndex]
o.blur();
if(!nNode.hasChild)return;
if(nNode.open)this.Collapse(nNode)
else this.Expand(nNode)
}TreeView.prototype.Expand=function(nNode){
var nid=nNode.id
var node=this.GetElm('Child'+nid)
var oicon=this.GetElm('icon'+nid)
node.style.display=''
var img1=new Image()
img1.src=(nNode.lastNode?Icon.minusbottom.src:Icon.minus.src)
if(oicon)oicon.src=img1.src
if(!nNode.xicon){
var img2=new Image()
img2.src=Icon.open.src
this.GetElm("folder"+nid).src=img2.src
}
if(this.ExpandOne)this.CloseOtherItem(nNode);
nNode.open=true
}TreeView.prototype.Collapse=function(nNode){
var nid=nNode.id
var node=this.GetElm('Child'+nid)
var oicon=this.GetElm('icon'+nid)
node.style.display='none'
var img1=new Image()
img1.src=(nNode.lastNode?Icon.plusbottom.src:Icon.plus.src)
if(oicon)oicon.src=img1.src
if(!nNode.xicon){
var img2=new Image()
img2.src=Icon.close.src
this.GetElm("folder"+nid).src=img2.src
}
nNode.open=false
}TreeView.prototype.ExpandAll=function(){
for(i=0;i<this.Nodes.length;i++)
if(this.Nodes[i].hasChild)this.Expand(this.Nodes[i])
}TreeView.prototype.CollapseAll=function(){
for(i=0;i<this.Nodes.length;i++)
if(this.Nodes[i].hasChild&&this.Nodes[i].pid!=this.Tree.id&&this.Nodes[i]!=this.Root)this.Collapse(this.Nodes[i])
}TreeView.prototype.CloseOtherItem=function(nNode){
for(var i=0;i<this.Nodes.length;i++)
if(this.Nodes[i].pid==nNode.pid&&this.Nodes[i].open){this.Collapse(this.Nodes[i]);break}
}
TreeView.prototype.Select=function(objNode,flag){
if(!this.current)this.current=objNode
this.current.className=""
objNode.className="highlight"
this.current=objNode
var a=objNode.getElementsByTagName("A")
if(a.length!=0&&flag)window.open(a[0].href,a[0].target);
if(this.ie)objNode.focus()
}TreeView.prototype.openTo=function(nIndex){
if(nIndex<0||nIndex>=this.Nodes.length)return;
var nNode=this.Nodes[nIndex]
while(nNode){
if(!nNode.open&&nNode.hasChild)this.Expand(nNode)
nNode=nNode.parent
}
this.Select(this.GetElm("NodeItem"+this.Nodes[nIndex].id),true)
}TreeView.prototype.GetElm=function(uid){
return document.getElementById(uid)
}
这到底是那里出问题了?请高手们指点迷津!!!