动态树形菜单

----------------action
package com.MonKey.action;

import java.io.*;
import java.util.*;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionForward;
import org.apache.struts.action.ActionMapping;
import org.apache.struts.actions.DispatchAction;

import com.MonKey.dao.*;
import com.MonKey.entity.*;

public class TreeAction extends DispatchAction {
private TreeDao tnd;
private ElecElectricity elec;
public void setTnd(TreeDao tnd) {
this.tnd = tnd;
}

public void setElec(ElecElectricity elec) {
this.elec = elec;
}
//根节点
public ActionForward tree(ActionMapping mapping, ActionForm form,
HttpServletRequest request, HttpServletResponse response) {
try {
request.setCharacterEncoding("gbk");
response.setCharacterEncoding("gbk");
PrintWriter writer=response.getWriter();
StringBuffer buff=new StringBuffer();
            List list=tnd.parentRoot();                              
           for (int i = 0; i < list.size(); i++) {
           ElecElectricity office=(((ElecElectricity)list.get(i)));
           buff.append("var elecPro= new WebFXLoadTreeItem('"+office.getElecElecname()+"','/HH2000/TreeAction.do?method=subTree&id="+office.getElecElecid()+"',action='javascript:clickTree("+office.getElecElecid()+")');");
               buff.append("tree.add(elecPro);");
           }
            writer.println(buff.toString());
writer.flush();
writer.close();
} catch (UnsupportedEncodingException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
return null;
}

//子节点
public ActionForward subTree(ActionMapping mapping, ActionForm form,
HttpServletRequest request, HttpServletResponse response) {
        response.setContentType("text/xml; charset=GBK");

StringBuffer buff=new StringBuffer();
PrintWriter writer;
try {
writer = response.getWriter();
Long id=new Long(request.getParameter("id"));
buff.append("<?xml version=\"1.0\" encoding=\"GBK\"?>");
            buff.append("<tree>");
           
            List list=tnd.sonRoot("sonRoot", id);
            for (int i = 0; i < list.size(); i++) {
            ElecTranszhan zhan=(((ElecTranszhan)list.get(i)));
                buff.append("<tree text=\""+zhan.getElecZhanname()+"\" src=\"/HH2000/TreeAction.do?method=subLineTree&amp;id="+zhan.getElecZhanid()+"\">");
                buff.append("</tree>");
}
            buff.append("</tree>");
            writer.println(buff.toString());
            writer.flush();
writer.close();
} catch (IOException e) {
e.printStackTrace();
}
return null;
}

//子节点(
public ActionForward subLineTree(ActionMapping mapping, ActionForm form,
HttpServletRequest request, HttpServletResponse response) {
        response.setContentType("text/xml; charset=GBK");
StringBuffer buff=new StringBuffer();
PrintWriter writer;
try {
writer = response.getWriter();
Long id=new Long(request.getParameter("id"));
buff.append("<?xml version=\"1.0\" encoding=\"GBK\"?>");
            buff.append("<tree>");
            //
            List list=tnd.sonRoot("lineRoot", id);
            for (int i = 0; i < list.size(); i++) {
            ElecLineandtrans line=(((ElecLineandtrans)list.get(i)));
            buff.append("<tree text=\""+line.getElecLinename()+"\" src=\"/HH2000/TreeAction.do?method=subTranTree&amp;id="+line.getElecLineid()+"\" >");
            buff.append("</tree>");
            }
            buff.append("</tree>");
            writer.println(buff.toString());
            writer.flush();
writer.close();
          
} catch (IOException e) {
e.printStackTrace();
}
return null;
}

//子节点
public ActionForward subTranTree(ActionMapping mapping, ActionForm form,
HttpServletRequest request, HttpServletResponse response) {
        response.setContentType("text/xml; charset=GBK");
StringBuffer buff=new StringBuffer();
PrintWriter writer;
try {
writer = response.getWriter();
Long id=new Long(request.getParameter("id"));
buff.append("<?xml version=\"1.0\" encoding=\"GBK\"?>");
            buff.append("<tree>");
            List list=tnd.sonRoot("tranRoot", id);
            for (int i = 0; i < list.size(); i++) {
            ElecTransformers tran=(((ElecTransformers)list.get(i)));
            buff.append("<tree text=\""+tran.getId().getElecTranid()+"\" action=\"javascript:clickTranTree('"+tran.getId().getElecTranid()+"')\">");
            buff.append("</tree>");
            }
            buff.append("</tree>");
            System.out.println(buff.toString());
            writer.println(buff.toString());
            writer.flush();
writer.close();
          
} catch (IOException e) {
e.printStackTrace();
}
return null;
}


//子节点(权限)
public ActionForward subQuanTree(ActionMapping mapping, ActionForm form,
HttpServletRequest request, HttpServletResponse response) {
        response.setContentType("text/xml; charset=GBK");
StringBuffer buff=new StringBuffer();
PrintWriter writer;
try {
writer = response.getWriter();
Long id=new Long(request.getParameter("id"));
buff.append("<?xml version=\"1.0\" encoding=\"GBK\"?>");
            buff.append("<tree>");
            List list=tnd.sonRoot("tranRoot", id);
            for (int i = 0; i < list.size(); i++) {
            ElecTransformers tran=(((ElecTransformers)list.get(i)));
            buff.append("<tree text=\""+tran.getId().getElecTranid()+"\">");
            buff.append("</tree>");
            }
            buff.append("</tree>");
            writer.println(buff.toString());
            writer.flush();
writer.close();
          
} catch (IOException e) {
e.printStackTrace();
}
return null;
}

}



--------------------js文件
1.
var webFXTreeConfig = {
rootIcon        : '/HH2000/images/folder.png',
openRootIcon    : '/HH2000/images/openfolder.png',
folderIcon      : '/HH2000/images/folder.png',
openFolderIcon  : '/HH2000/images/openfolder.png',
fileIcon        : '/HH2000/images/file.png',
iIcon           : '/HH2000/images/I.png',
lIcon           : '/HH2000/images/L.png',
lMinusIcon      : '/HH2000/images/Lminus.png',
lPlusIcon       : '/HH2000/images/Lplus.png',
tIcon           : '/HH2000/images/T.png',
tMinusIcon      : '/HH2000/images/Tminus.png',
tPlusIcon       : '/HH2000/images/Tplus.png',
blankIcon       : '/HH2000/images/blank.png',
defaultText     : 'Loading...',
defaultAction   : 'javascript:void(0);',
defaultBehavior : 'classic',
usePersistence : true
};

var webFXTreeHandler = {
idCounter : 0,
idPrefix  : "webfx-tree-object-",
all       : {},
behavior  : null,
selected  : null,
onSelect  : null, /* should be part of tree, not handler */
getId     : function() { return this.idPrefix + this.idCounter++; },
toggle    : function (oItem) { this.all[oItem.id.replace('-plus','')].toggle(); },
select    : function (oItem) { this.all[oItem.id.replace('-icon','')].select(); },
focus     : function (oItem) { this.all[oItem.id.replace('-anchor','')].focus(); },
blur      : function (oItem) { this.all[oItem.id.replace('-anchor','')].blur(); },
keydown   : function (oItem, e) { return this.all[oItem.id].keydown(e.keyCode); },
cookies   : new WebFXCookie(),
insertHTMLBeforeEnd : function (oElement, sHTML) {
if (oElement.insertAdjacentHTML != null) {
oElement.insertAdjacentHTML("BeforeEnd", sHTML)
return;
}
var df; // DocumentFragment
var r = oElement.ownerDocument.createRange();
r.selectNodeContents(oElement);
r.collapse(false);
df = r.createContextualFragment(sHTML);
oElement.appendChild(df);
}
};

/*
* WebFXCookie class
*/

function WebFXCookie() {
if (document.cookie.length) { this.cookies = ' ' + document.cookie; }
}

WebFXCookie.prototype.setCookie = function (key, value) {
document.cookie = key + "=" + escape(value);
}

WebFXCookie.prototype.getCookie = function (key) {
if (this.cookies) {
var start = this.cookies.indexOf(' ' + key + '=');
if (start == -1) { return null; }
var end = this.cookies.indexOf(";", start);
if (end == -1) { end = this.cookies.length; }
end -= start;
var cookie = this.cookies.substr(start,end);
return unescape(cookie.substr(cookie.indexOf('=') + 1, cookie.length - cookie.indexOf('=') + 1));
}
else { return null; }
}

/*
* WebFXTreeAbstractNode class
*/

function WebFXTreeAbstractNode(sText, sAction) {
this.childNodes  = [];
this.id     = webFXTreeHandler.getId();
this.text   = sText || webFXTreeConfig.defaultText;
this.action = sAction || webFXTreeConfig.defaultAction;
this._last  = false;
webFXTreeHandler.all[this.id] = this;
}

/*
* To speed thing up if you're adding multiple nodes at once (after load)
* use the bNoIdent parameter to prevent automatic re-indentation and call
* the obj.ident() method manually once all nodes has been added.
*/

WebFXTreeAbstractNode.prototype.add = function (node, bNoIdent) {
node.parentNode = this;
this.childNodes[this.childNodes.length] = node;
var root = this;
if (this.childNodes.length >= 2) {
this.childNodes[this.childNodes.length - 2]._last = false;
}
while (root.parentNode) { root = root.parentNode; }
if (root.rendered) {
if (this.childNodes.length >= 2) {
document.getElementById(this.childNodes[this.childNodes.length - 2].id + '-plus').src = ((this.childNodes[this.childNodes.length -2].folder)?((this.childNodes[this.childNodes.length -2].open)?webFXTreeConfig.tMinusIcon:webFXTreeConfig.tPlusIcon):webFXTreeConfig.tIcon);
this.childNodes[this.childNodes.length - 2].plusIcon = webFXTreeConfig.tPlusIcon;
this.childNodes[this.childNodes.length - 2].minusIcon = webFXTreeConfig.tMinusIcon;
this.childNodes[this.childNodes.length - 2]._last = false;
}
this._last = true;
var foo = this;
while (foo.parentNode) {
for (var i = 0; i < foo.parentNode.childNodes.length; i++) {
if (foo.id == foo.parentNode.childNodes[i].id) { break; }
}
if (i == foo.parentNode.childNodes.length - 1) { foo.parentNode._last = true; }
else { foo.parentNode._last = false; }
foo = foo.parentNode;
}
webFXTreeHandler.insertHTMLBeforeEnd(document.getElementById(this.id + '-cont'), node.toString());
if ((!this.folder) && (!this.openIcon)) {
this.icon = webFXTreeConfig.folderIcon;
this.openIcon = webFXTreeConfig.openFolderIcon;
}
if (!this.folder) { this.folder = true; this.collapse(true); }
if (!bNoIdent) { this.indent(); }
}
return node;
}

WebFXTreeAbstractNode.prototype.toggle = function() {
if (this.folder) {
if (this.open) { this.collapse(); }
else { this.expand(); }
} }

WebFXTreeAbstractNode.prototype.select = function() {
document.getElementById(this.id + '-anchor').focus();
}

WebFXTreeAbstractNode.prototype.deSelect = function() {
document.getElementById(this.id + '-anchor').className = '';
webFXTreeHandler.selected = null;
}

WebFXTreeAbstractNode.prototype.focus = function() {
if ((webFXTreeHandler.selected) && (webFXTreeHandler.selected != this)) { webFXTreeHandler.selected.deSelect(); }
webFXTreeHandler.selected = this;
if ((this.openIcon) && (webFXTreeHandler.behavior != 'classic')) { document.getElementById(this.id + '-icon').src = this.openIcon; }
document.getElementById(this.id + '-anchor').className = 'selected';
document.getElementById(this.id + '-anchor').focus();
if (webFXTreeHandler.onSelect) { webFXTreeHandler.onSelect(this); }
}

WebFXTreeAbstractNode.prototype.blur = function() {
if ((this.openIcon) && (webFXTreeHandler.behavior != 'classic')) { document.getElementById(this.id + '-icon').src = this.icon; }
document.getElementById(this.id + '-anchor').className = 'selected-inactive';
}

WebFXTreeAbstractNode.prototype.doExpand = function() {
if (webFXTreeHandler.behavior == 'classic') { document.getElementById(this.id + '-icon').src = this.openIcon; }
if (this.childNodes.length) {  document.getElementById(this.id + '-cont').style.display = 'block'; }
this.open = true;
if (webFXTreeConfig.usePersistence) {
webFXTreeHandler.cookies.setCookie(this.id.substr(18,this.id.length - 18), '1');
} }

WebFXTreeAbstractNode.prototype.doCollapse = function() {
if (webFXTreeHandler.behavior == 'classic') { document.getElementById(this.id + '-icon').src = this.icon; }
if (this.childNodes.length) { document.getElementById(this.id + '-cont').style.display = 'none'; }
this.open = false;
if (webFXTreeConfig.usePersistence) {
webFXTreeHandler.cookies.setCookie(this.id.substr(18,this.id.length - 18), '0');
} }

WebFXTreeAbstractNode.prototype.expandAll = function() {
this.expandChildren();
if ((this.folder) && (!this.open)) { this.expand(); }
}

WebFXTreeAbstractNode.prototype.expandChildren = function() {
for (var i = 0; i < this.childNodes.length; i++) {
this.childNodes[i].expandAll();
} }

WebFXTreeAbstractNode.prototype.collapseAll = function() {
this.collapseChildren();
if ((this.folder) && (this.open)) { this.collapse(true); }
}

WebFXTreeAbstractNode.prototype.collapseChildren = function() {
for (var i = 0; i < this.childNodes.length; i++) {
this.childNodes[i].collapseAll();
} }

WebFXTreeAbstractNode.prototype.indent = function(lvl, del, last, level, nodesLeft) {
/*
* Since we only want to modify items one level below ourself,
* and since the rightmost indentation position is occupied by
* the plus icon we set this to -2
*/
if (lvl == null) { lvl = -2; }
var state = 0;
for (var i = this.childNodes.length - 1; i >= 0 ; i--) {
state = this.childNodes[i].indent(lvl + 1, del, last, level);
if (state) { return; }
}
if (del) {
if ((level >= this._level) && (document.getElementById(this.id + '-plus'))) {
if (this.folder) {
document.getElementById(this.id + '-plus').src = (this.open)?webFXTreeConfig.lMinusIcon:webFXTreeConfig.lPlusIcon;
this.plusIcon = webFXTreeConfig.lPlusIcon;
this.minusIcon = webFXTreeConfig.lMinusIcon;
}
else if (nodesLeft) { document.getElementById(this.id + '-plus').src = webFXTreeConfig.lIcon; }
return 1;
} }
var foo = document.getElementById(this.id + '-indent-' + lvl);
if (foo) {
if ((foo._last) || ((del) && (last))) { foo.src =  webFXTreeConfig.blankIcon; }
else { foo.src =  webFXTreeConfig.iIcon; }
}
return 0;
}

/*
* WebFXTree class
*/

function WebFXTree(sText, sAction, sBehavior, sIcon, sOpenIcon) {
this.base = WebFXTreeAbstractNode;
this.base(sText, sAction);
this.icon      = sIcon || webFXTreeConfig.rootIcon;
this.openIcon  = sOpenIcon || webFXTreeConfig.openRootIcon;
/* Defaults to open */
if (webFXTreeConfig.usePersistence) {
this.open  = (webFXTreeHandler.cookies.getCookie(this.id.substr(18,this.id.length - 18)) == '0')?false:true;
} else { this.open  = true; }
this.folder    = true;
this.rendered  = false;
this.onSelect  = null;
if (!webFXTreeHandler.behavior) {  webFXTreeHandler.behavior = sBehavior || webFXTreeConfig.defaultBehavior; }
}

WebFXTree.prototype = new WebFXTreeAbstractNode;

WebFXTree.prototype.setBehavior = function (sBehavior) {
webFXTreeHandler.behavior =  sBehavior;
};

WebFXTree.prototype.getBehavior = function (sBehavior) {
return webFXTreeHandler.behavior;
};

WebFXTree.prototype.getSelected = function() {
if (webFXTreeHandler.selected) { return webFXTreeHandler.selected; }
else { return null; }
}

WebFXTree.prototype.remove = function() { }

WebFXTree.prototype.expand = function() {
this.doExpand();
}

WebFXTree.prototype.collapse = function(b) {
if (!b) { this.focus(); }
this.doCollapse();
}

WebFXTree.prototype.getFirst = function() {
return null;
}

WebFXTree.prototype.getLast = function() {
return null;
}

WebFXTree.prototype.getNextSibling = function() {
return null;
}

WebFXTree.prototype.getPreviousSibling = function() {
return null;
}

WebFXTree.prototype.keydown = function(key) {
if (key == 39) {
if (!this.open) { this.expand(); }
else if (this.childNodes.length) { this.childNodes[0].select(); }
return false;
}
if (key == 37) { this.collapse(); return false; }
if ((key == 40) && (this.open) && (this.childNodes.length)) { this.childNodes[0].select(); return false; }
return true;
}

WebFXTree.prototype.toString = function() {
var str = "<div id=\"" + this.id + "\" ondblclick=\"webFXTreeHandler.toggle(this);\" class=\"webfx-tree-item\" onkeydown=\"return webFXTreeHandler.keydown(this, event)\">" +
"<img id=\"" + this.id + "-icon\" class=\"webfx-tree-icon\" src=\"" + ((webFXTreeHandler.behavior == 'classic' && this.open)?this.openIcon:this.icon) + "\" onclick=\"webFXTreeHandler.select(this);\">" +
"<a href=\"" + this.action + "\" id=\"" + this.id + "-anchor\" onfocus=\"webFXTreeHandler.focus(this);\" onblur=\"webFXTreeHandler.blur(this);\"" +
(this.target ? " target=\"" + this.target + "\"" : "") +
">" + this.text + "</a></div>" +
"<div id=\"" + this.id + "-cont\" class=\"webfx-tree-container\" style=\"display: " + ((this.open)?'block':'none') + ";\">";
var sb = [];
for (var i = 0; i < this.childNodes.length; i++) {
sb[i] = this.childNodes[i].toString(i, this.childNodes.length);
}
this.rendered = true;
return str + sb.join("") + "</div>";
};

/*
* WebFXTreeItem class
*/

function WebFXTreeItem(sText, sAction, eParent, sIcon, sOpenIcon) {
this.base = WebFXTreeAbstractNode;
this.base(sText, sAction);
/* Defaults to close */
if (webFXTreeConfig.usePersistence) {
this.open = (webFXTreeHandler.cookies.getCookie(this.id.substr(18,this.id.length - 18)) == '1')?true:false;
} else { this.open = false; }
if (sIcon) { this.icon = sIcon; }
if (sOpenIcon) { this.openIcon = sOpenIcon; }
if (eParent) { eParent.add(this); }
}

WebFXTreeItem.prototype = new WebFXTreeAbstractNode;

WebFXTreeItem.prototype.remove = function() {
var iconSrc = document.getElementById(this.id + '-plus').src;
var parentNode = this.parentNode;
var prevSibling = this.getPreviousSibling(true);
var nextSibling = this.getNextSibling(true);
var folder = this.parentNode.folder;
var last = ((nextSibling) && (nextSibling.parentNode) && (nextSibling.parentNode.id == parentNode.id))?false:true;
this.getPreviousSibling().focus();
this._remove();
if (parentNode.childNodes.length == 0) {
document.getElementById(parentNode.id + '-cont').style.display = 'none';
parentNode.doCollapse();
parentNode.folder = false;
parentNode.open = false;
}
if (!nextSibling || last) { parentNode.indent(null, true, last, this._level, parentNode.childNodes.length); }
if ((prevSibling == parentNode) && !(parentNode.childNodes.length)) {
prevSibling.folder = false;
prevSibling.open = false;
iconSrc = document.getElementById(prevSibling.id + '-plus').src;
iconSrc = iconSrc.replace('minus', '').replace('plus', '');
document.getElementById(prevSibling.id + '-plus').src = iconSrc;
document.getElementById(prevSibling.id + '-icon').src = webFXTreeConfig.fileIcon;
}
if (document.getElementById(prevSibling.id + '-plus')) {
if (parentNode == prevSibling.parentNode) {
iconSrc = iconSrc.replace('minus', '').replace('plus', '');
document.getElementById(prevSibling.id + '-plus').src = iconSrc;
} } }

WebFXTreeItem.prototype._remove = function() {
for (var i = this.childNodes.length - 1; i >= 0; i--) {
this.childNodes[i]._remove();
}
for (var i = 0; i < this.parentNode.childNodes.length; i++) {
if (this == this.parentNode.childNodes[i]) {
for (var j = i; j < this.parentNode.childNodes.length; j++) {
this.parentNode.childNodes[j] = this.parentNode.childNodes[j+1];
}
this.parentNode.childNodes.length -= 1;
if (i + 1 == this.parentNode.childNodes.length) { this.parentNode._last = true; }
break;
} }
webFXTreeHandler.all[this.id] = null;
var tmp = document.getElementById(this.id);
if (tmp) { tmp.parentNode.removeChild(tmp); }
tmp = document.getElementById(this.id + '-cont');
if (tmp) { tmp.parentNode.removeChild(tmp); }
}

WebFXTreeItem.prototype.expand = function() {
this.doExpand();
document.getElementById(this.id + '-plus').src = this.minusIcon;
}

WebFXTreeItem.prototype.collapse = function(b) {
if (!b) { this.focus(); }
this.doCollapse();
document.getElementById(this.id + '-plus').src = this.plusIcon;
}

WebFXTreeItem.prototype.getFirst = function() {
return this.childNodes[0];
}

WebFXTreeItem.prototype.getLast = function() {
if (this.childNodes[this.childNodes.length - 1].open) { return this.childNodes[this.childNodes.length - 1].getLast(); }
else { return this.childNodes[this.childNodes.length - 1]; }
}

WebFXTreeItem.prototype.getNextSibling = function() {
for (var i = 0; i < this.parentNode.childNodes.length; i++) {
if (this == this.parentNode.childNodes[i]) { break; }
}
if (++i == this.parentNode.childNodes.length) { return this.parentNode.getNextSibling(); }
else { return this.parentNode.childNodes[i]; }
}

WebFXTreeItem.prototype.getPreviousSibling = function(b) {
for (var i = 0; i < this.parentNode.childNodes.length; i++) {
if (this == this.parentNode.childNodes[i]) { break; }
}
if (i == 0) { return this.parentNode; }
else {
if ((this.parentNode.childNodes[--i].open) || (b && this.parentNode.childNodes[i].folder)) { return this.parentNode.childNodes[i].getLast(); }
else { return this.parentNode.childNodes[i]; }
} }

WebFXTreeItem.prototype.keydown = function(key) {
if ((key == 39) && (this.folder)) {
if (!this.open) { this.expand(); }
else { this.getFirst().select(); }
return false;
}
else if (key == 37) {
if (this.open) { this.collapse(); }
else { this.parentNode.select(); }
return false;
}
else if (key == 40) {
if (this.open) { this.getFirst().select(); }
else {
var sib = this.getNextSibling();
if (sib) { sib.select(); }
}
return false;
}
else if (key == 38) { this.getPreviousSibling().select(); return false; }
return true;
}

WebFXTreeItem.prototype.toString = function (nItem, nItemCount) {
var foo = this.parentNode;
var indent = '';
if (nItem + 1 == nItemCount) { this.parentNode._last = true; }
var i = 0;
while (foo.parentNode) {
foo = foo.parentNode;
indent = "<img id=\"" + this.id + "-indent-" + i + "\" src=\"" + ((foo._last)?webFXTreeConfig.blankIcon:webFXTreeConfig.iIcon) + "\">" + indent;
i++;
}
this._level = i;
if (this.childNodes.length) { this.folder = 1; }
else { this.open = false; }
if ((this.folder) || (webFXTreeHandler.behavior != 'classic')) {
if (!this.icon) { this.icon = webFXTreeConfig.folderIcon; }
if (!this.openIcon) { this.openIcon = webFXTreeConfig.openFolderIcon; }
}
else if (!this.icon) { this.icon = webFXTreeConfig.fileIcon; }
var label = this.text.replace(/</g, '&lt;').replace(/>/g, '&gt;');
var str = "<div id=\"" + this.id + "\" ondblclick=\"webFXTreeHandler.toggle(this);\" class=\"webfx-tree-item\" onkeydown=\"return webFXTreeHandler.keydown(this, event)\">" +
indent +
"<img id=\"" + this.id + "-plus\" src=\"" + ((this.folder)?((this.open)?((this.parentNode._last)?webFXTreeConfig.lMinusIcon:webFXTreeConfig.tMinusIcon):((this.parentNode._last)?webFXTreeConfig.lPlusIcon:webFXTreeConfig.tPlusIcon)):((this.parentNode._last)?webFXTreeConfig.lIcon:webFXTreeConfig.tIcon)) + "\" onclick=\"webFXTreeHandler.toggle(this);\">" +
"<img id=\"" + this.id + "-icon\" class=\"webfx-tree-icon\" src=\"" + ((webFXTreeHandler.behavior == 'classic' && this.open)?this.openIcon:this.icon) + "\" onclick=\"webFXTreeHandler.select(this);\">" +
"<a href=\"" + this.action + "\" id=\"" + this.id + "-anchor\" onfocus=\"webFXTreeHandler.focus(this);\" onblur=\"webFXTreeHandler.blur(this);\"" +
(this.target ? " target=\"" + this.target + "\"" : "") +
">" + label + "</a></div>" +
"<div id=\"" + this.id + "-cont\" class=\"webfx-tree-container\" style=\"display: " + ((this.open)?'block':'none') + ";\">";
var sb = [];
for (var i = 0; i < this.childNodes.length; i++) {
sb[i] = this.childNodes[i].toString(i,this.childNodes.length);
}
this.plusIcon = ((this.parentNode._last)?webFXTreeConfig.lPlusIcon:webFXTreeConfig.tPlusIcon);
this.minusIcon = ((this.parentNode._last)?webFXTreeConfig.lMinusIcon:webFXTreeConfig.tMinusIcon);
return str + sb.join("") + "</div>";
}



2.
/*----------------------------------------------------------------------------\
|                               XLoadTree 1.11                                |
|-----------------------------------------------------------------------------|
|                         Created by Erik Arvidsson                           |
|                  (http://webfx.eae.net/contact.html#erik)                   |
|                      For WebFX (http://webfx.eae.net/)                      |
|-----------------------------------------------------------------------------|
| An extension to xTree that allows sub trees to be loaded at runtime by      |
| reading XML files from the server. Works with IE5+ and Mozilla 1.0+         |
|-----------------------------------------------------------------------------|
|                   Copyright (c) 1999 - 2002 Erik Arvidsson                  |
|-----------------------------------------------------------------------------|
| This software is provided "as is", without warranty of any kind, express or |
| implied, including  but not limited  to the warranties of  merchantability, |
| fitness for a particular purpose and noninfringement. In no event shall the |
| authors or  copyright  holders be  liable for any claim,  damages or  other |
| liability, whether  in an  action of  contract, tort  or otherwise, arising |
| from,  out of  or in  connection with  the software or  the  use  or  other |
| dealings in the software.                                                   |
| - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - |
| This  software is  available under the  three different licenses  mentioned |
| below.  To use this software you must chose, and qualify, for one of those. |
| - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - |
| The WebFX Non-Commercial License          http://webfx.eae.net/license.html |
| Permits  anyone the right to use the  software in a  non-commercial context |
| free of charge.                                                             |
| - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - |
| The WebFX Commercial license           http://webfx.eae.net/commercial.html |
| Permits the  license holder the right to use  the software in a  commercial |
| context. Such license must be specifically obtained, however it's valid for |
| any number of  implementations of the licensed software.                    |
| - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - |
| GPL - The GNU General Public License    http://www.gnu.org/licenses/gpl.txt |
| Permits anyone the right to use and modify the software without limitations |
| as long as proper  credits are given  and the original  and modified source |
| code are included. Requires  that the final product, software derivate from |
| the original  source or any  software  utilizing a GPL  component, such  as |
| this, is also licensed under the GPL license.                               |
|-----------------------------------------------------------------------------|
| 2001-09-27 | Original Version Posted.                                       |
| 2002-01-19 | Added some simple error handling and string templates for      |
|            | reporting the errors.                                          |
| 2002-01-28 | Fixed loading issues in IE50 and IE55 that made the tree load  |
|            | twice.                                                         |
| 2002-10-10 | (1.1) Added reload method that reloads the XML file from the   |
|            | server.                                                        |
/ 2003-05-06 | Added support for target attribute                             |
|-----------------------------------------------------------------------------|
| Dependencies: xtree.js - original xtree library                             |
|               xtree.css - simple css styling of xtree                       |
|               xmlextras.js - provides xml http objects and xml document     |
|                              objects                                        |
|-----------------------------------------------------------------------------|
| Created 2001-09-27 | All changes are in the log above. | Updated 2003-05-06 |
\----------------------------------------------------------------------------*/


webFXTreeConfig.loadingText = "装载中...";
webFXTreeConfig.loadErrorTextTemplate = "装载 \"%1%\" 失败";
webFXTreeConfig.emptyErrorTextTemplate = "错误: \"%1%\" 不包含子节点";

/*
* WebFXLoadTree class
*/

function WebFXLoadTree(sText, sXmlSrc, sAction, sBehavior, sIcon, sOpenIcon) {
// call super
this.WebFXTree = WebFXTree;
this.WebFXTree(sText, sAction, sBehavior, sIcon, sOpenIcon);

// setup default property values
this.src = sXmlSrc;
this.loading = false;
this.loaded = false;
this.errorText = "";

// check start state and load if open
if (this.open)
_startLoadXmlTree(this.src, this);
else {
// and create loading item if not
this._loadingItem = new WebFXTreeItem(webFXTreeConfig.loadingText);
this.add(this._loadingItem);
}
}

WebFXLoadTree.prototype = new WebFXTree;

// override the expand method to load the xml file
WebFXLoadTree.prototype._webfxtree_expand = WebFXTree.prototype.expand;
WebFXLoadTree.prototype.expand = function() {
if (!this.loaded && !this.loading) {
// load
_startLoadXmlTree(this.src, this);
}
this._webfxtree_expand();
};

/*
* WebFXLoadTreeItem class
*/

function WebFXLoadTreeItem(sText, sXmlSrc, sAction, eParent, sIcon, sOpenIcon) {
// call super
this.WebFXTreeItem = WebFXTreeItem;
this.WebFXTreeItem(sText, sAction, eParent, sIcon, sOpenIcon);

// setup default property values
this.src = sXmlSrc;
this.loading = false;
this.loaded = false;
this.errorText = "";

// check start state and load if open
if (this.open)
_startLoadXmlTree(this.src, this);
else {
// and create loading item if not
this._loadingItem = new WebFXTreeItem(webFXTreeConfig.loadingText);
this.add(this._loadingItem);
}
}

WebFXLoadTreeItem.prototype = new WebFXTreeItem;

// override the expand method to load the xml file
WebFXLoadTreeItem.prototype._webfxtreeitem_expand = WebFXTreeItem.prototype.expand;
WebFXLoadTreeItem.prototype.expand = function() {
if (!this.loaded && !this.loading) {
// load
_startLoadXmlTree(this.src, this);
}
this._webfxtreeitem_expand();
};

// reloads the src file if already loaded
WebFXLoadTree.prototype.reload =
WebFXLoadTreeItem.prototype.reload = function () {
// if loading do nothing
if (this.loaded) {
var open = this.open;
// remove
while (this.childNodes.length > 0)
this.childNodes[this.childNodes.length - 1].remove();

this.loaded = false;

this._loadingItem = new WebFXTreeItem(webFXTreeConfig.loadingText);
this.add(this._loadingItem);

if (open)
this.expand();
}
else if (this.open && !this.loading)
_startLoadXmlTree(this.src, this);
};

/*
* Helper functions
*/

// creates the xmlhttp object and starts the load of the xml document
function _startLoadXmlTree(sSrc, jsNode) {
if (jsNode.loading || jsNode.loaded)
return;
jsNode.loading = true;
var xmlHttp = XmlHttp.create();
xmlHttp.open("GET", sSrc, true); // async
xmlHttp.onreadystatechange = function () {
if (xmlHttp.readyState == 4) {
_xmlFileLoaded(xmlHttp.responseXML, jsNode);
}
};
// call in new thread to allow ui to update
window.setTimeout(function () {
xmlHttp.send(null);
}, 10);
}


// Converts an xml tree to a js tree. See article about xml tree format
function _xmlTreeToJsTree(oNode) {
// retreive attributes
var text = oNode.getAttribute("text");
var action = oNode.getAttribute("action");
var parent = null;
var icon = oNode.getAttribute("icon");
var openIcon = oNode.getAttribute("openIcon");
var src = oNode.getAttribute("src");
var target = oNode.getAttribute("target");
// create jsNode
var jsNode;
if (src != null && src != "")
jsNode = new WebFXLoadTreeItem(text, src, action, parent, icon, openIcon);
else
jsNode = new WebFXTreeItem(text, action, parent, icon, openIcon);

if (target != "")
jsNode.target = target;

// go through childNOdes
var cs = oNode.childNodes;
var l = cs.length;
for (var i = 0; i < l; i++) {
if (cs[i].tagName == "tree")
jsNode.add( _xmlTreeToJsTree(cs[i]), true );
}

return jsNode;
}

// Inserts an xml document as a subtree to the provided node
function _xmlFileLoaded(oXmlDoc, jsParentNode) {
if (jsParentNode.loaded)
return;

var bIndent = false;
var bAnyChildren = false;
jsParentNode.loaded = true;
jsParentNode.loading = false;

// check that the load of the xml file went well
if( oXmlDoc == null || oXmlDoc.documentElement == null) {
alert("装载失败!");
jsParentNode.errorText = parseTemplateString(webFXTreeConfig.loadErrorTextTemplate,
jsParentNode.src);
}
else {
// there is one extra level of tree elements
var root = oXmlDoc.documentElement;

// loop through all tree children
var cs = root.childNodes;
var l = cs.length;
for (var i = 0; i < l; i++) {
if (cs[i].tagName == "tree") {
bAnyChildren = true;
bIndent = true;
jsParentNode.add( _xmlTreeToJsTree(cs[i]), true);
}
}

// if no children we got an error
if (!bAnyChildren)
jsParentNode.errorText = parseTemplateString(webFXTreeConfig.emptyErrorTextTemplate,
jsParentNode.src);
}

// remove dummy
if (jsParentNode._loadingItem != null) {
jsParentNode._loadingItem.remove();
bIndent = true;
}

if (bIndent) {
// indent now that all items are added
jsParentNode.indent();
}

// show error in status bar
if (jsParentNode.errorText != "")
window.status = jsParentNode.errorText;
}

// parses a string and replaces %n% with argument nr n
function parseTemplateString(sTemplate) {
var args = arguments;
var s = sTemplate;

s = s.replace(/\%\%/g, "%");

for (var i = 1; i < args.length; i++)
s = s.replace( new RegExp("\%" + i + "\%", "g"), args[i] )

return s;
}