?? tree.js
字號:
var Tree=new function(){
this.url="/dynamicTree/tree.do";
this.openMark="<img src='/dynamicTree/images/big_minus.gif'/>--<img src='/dynamicTree/images/folderopen.gif'/>";
this.closeMark="<img src='/dynamicTree/images/big_plus.gif'/>--<img src='/dynamicTree/images/fold2k_close.gif'/>";
this.itemMark="<img src='/dynamicTree/images/file_image.gif'/>";
this.initId="treeInit";
this.rootData="root";
this.boxSuffix="_childrenBox";
this.folderType="folder";
this.itemType="item";
this.init=function(){
var initNode=document.getElementById("treeInit");
var node=document.createElement("div");
node.id="0";
node.innerHTML=this.createItemHTML(node.id,this.folderType,this.rootData,null);
initNode.appendChild(node);
}
this.createItemHTML=function(itemId,itemType1,itemData,itemLink){
if (itemType1==this.itemType) {
return '<span class="itemMark">'+this.itemMark+'</span>'+
'<span class="item" onclick="Tree.clickItem(\''+itemLink+'\')">'+itemData+'</span>';
}else if (itemType1==this.folderType) {
return '<span class="folderMark" onclick="Tree.getChildren('+itemId+')">'+this.closeMark+'</span>'+
'<span class="folder" onclick="Tree.getChildren('+itemId+')">'+itemData+'</span>';
}
}
this.clickItem=function(link1){
alert(link1);
}
this.getChildren=function(pid){
var childBox=document.getElementById(pid+this.boxSuffix);
if (childBox) {
var isHidden=(childBox.style.display=="none");
childBox.style.display=isHidden?"":"none";
var pNode=document.getElementById(pid);
pNode.firstChild.innerHTML=isHidden?this.openMark:this.closeMark;
}else{
var XMLHttpReq=this.createXMLHttpRequest();
XMLHttpReq.onreadystatechange=function(){
if (XMLHttpReq.readyState==4) {
if (XMLHttpReq.status==200) {
Tree.addChildren(pid,XMLHttpReq.responseXML);
}
else {
alert("error");
}
}
}
XMLHttpReq.open("GET",this.url+"?pid="+pid,true);
XMLHttpReq.send(null);
}
}
this.createXMLHttpRequest=function(){
var XMLHttpReq;
if(window.XMLHttpRequest)
{
XMLHttpReq=new XMLHttpRequest();
}
else if(window.ActiveXObject)
{
try
{
XMLHttpReq=new ActiveXObject("Msxml2.XMLHTTP");
}catch(e)
{
try
{
XMLHttpReq=new ActiveXObject("Microsoft.XMLHTTP");
}catch(e){}
}
}
return XMLHttpReq;
}
this.addChildren=function(pid,data){
//event.cancelBubble=true;//
var pNode=document.getElementById(pid);
pNode.firstChild.innerHTML=this.openMark;
var nodeBox=document.createElement("div");
nodeBox.id=pid+this.boxSuffix;
pNode.appendChild(nodeBox);
var children=data.getElementsByTagName("tree")[0].childNodes;
var child=null;
var childType=null;
for ( var i = 0; i < children.length; i++) {
child=children[i];
var node=document.createElement("div");
node.id=child.getAttribute("id");
childType=child.getAttribute("isFolder")=="true"?this.folderType:this.itemType;
if (childType==this.itemType) {
node.innerHTML=this.createItemHTML(node.id, childType, child.firstChild.data, child.getAttribute("link"));
}else{
node.innerHTML=this.createItemHTML(node.id, childType, child.firstChild.data, null);
}
nodeBox.appendChild(node);
}
}
}
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