dtree网页树状菜单及传递对象集合到js内，动态生成节点

最近要做一个联系人的选择框，选择联系人后，将联系人的手机号添加到网页的输入框，可以支持复选框。在winform端，树状菜单是非常有用的，实现这个是非常便捷的，所以我想到在页面放入一个树状菜单的。我选择了dtree这个工具，网络上还有很多方法实现页面树状菜单的，不过我觉得这个比较好用的，而且配置比较简单，运用上上手很快。dtree是纯js的，所以不用导入jar包，并且配置只要在js内配置就好了。而且现在网络上有很多高手修改后的改良版，加了checkbox，更加方便。在开发过程中，最难的就是数据的交互的，因为dtree是纯js的，所以不存在和后台交互的方法，我的办法是先通过后台交互，将数据传递到页面，然后再传递到js内。后台传递到页面的数据我拼接成一个字符串，然后在js内切割，将数据整合成数组。
后台数据处理代码：
  public String GetLinkManByDID(){
  try {
   directories = this.directoryService.GetAllDirecoty();
   selectlinkMans = this.linkManService.GetAllLinkMans();
   String direStringstring = "";
   String linkString = "";
   for (int i = 0; i < directories.size(); i++) {
    if (i<directories.size()-1) {
     direStringstring+=directories.get(i).getID()+"-"+directories.get(i).getDirectoryName()+"+";
    }
    else {
     direStringstring+=directories.get(i).getID()+"-"+directories.get(i).getDirectoryName();
    }
   }
   for (int i = 0; i < selectlinkMans.size(); i++) {
    if (i<selectlinkMans.size()-1) {
     linkString+=selectlinkMans.get(i).getDirectory().getID()+"-"+selectlinkMans.get(i).getName()+"-"+selectlinkMans.get(i).getPhoneNum()+"+";
    }
    else {
     linkString+=selectlinkMans.get(i).getDirectory().getID()+"-"+selectlinkMans.get(i).getName()+"-"+selectlinkMans.get(i).getPhoneNum();
    }
   }
   ActionContext.getContext().getSession().put("directories", direStringstring);
   ActionContext.getContext().getSession().put("allLinkMans", linkString);
  } catch (Exception e) {
   e.printStackTrace();
  }
  return SUCCESS;
 }
我是用s2sh款家的，所以数据存放到session中方式是
ActionContext.getContext().getSession().put(key, value)

<script type="text/javascript">
                        var linkmans= [];
                        var dires = [];
                        //linkmans = "${directories}".replace('[','').replace(']','').split(',');
                        linkmans="${allLinkMans}".split(',');
                        dires = "${directories}".split(',');
                        treeload(linkmans[0],dires[0]);
</script>
treeload 是我自己编写的一个js文件内的方法。
js：
  function treeload(linkmans , dires){
 var linklist= String2linklist(linkmans);
 var direslist = String2direlist(dires);
 d = new dTree('d','./');
 d.config.checkbox=true;//显示checkbox
 d.config.objValueId='phoneNums'; 
 d.icon.root='images/hr/home.png',
 d.icon.folder='images/hr/group.gif',
 d.icon.folderOpen='images/hr/group.gif',
 d.icon.node='images/hr/nan.gif',
 d.add(0,-1,'联系人',null);
 var int = 0;
 var direids = new Array();
 var direpid= new Array();
 for ( int; int < direslist.length; int++) {
  d.add(int+1,0,direslist[int].name,false);
  direids.push(direslist[int].id);
  direpid.push(int+1);
 }
 d.add(int+1,0,'全部联系人',false);
 direpid.push(int+1);
 for ( var int2 = 0; int2 < linklist.length; int2++) {
  for ( var int3 = 0; int3 < direpid.length-1; int3++) {
   if(linklist[int2].did==direids[int3])
   {
    int++;
    d.add(int+1,direpid[int3],linklist[int2].name,false,linklist[int2].phone);
   }
  }
 }
 for ( var int4 = 0; int4 < linklist.length; int4++) {
  int++;
  d.add(int+1,direpid[direpid.length-1],linklist[int4].name,false,linklist[int4].phone);
 }
 
 document.write(d);
}
function String2linklist(linkmans){
 var linkarray = new Array();
 var a = linkmans.split('+');
// alert(a[0]);
 for ( var int = 0; int < a.length; int++) {
  var b = a[int].split('-');
//  alert(b[2]);
  linkarray.push(new linkman(b[0],b[1],b[2]));
 }
 return linkarray;
}
function String2direlist(dires){
 var direlist = new Array();
 var a = dires.split('+');
 for ( var int = 0; int < a.length; int++) {
  var b = a[int].split('-');
//  alert(b[1]);
  direlist.push(new dire(b[0],b[1]));
 }
 return direlist;
}
function linkman(Did,name,phone){
 this.did = Did;
 this.name = name ;
 this.phone=phone;
}
function dire(id ,name){
 this.id= id;
 this.name = name;
}
最后，效果图

我改写的dtree 的js：
 
// Node object

function Node(id, pid, name, checked, value, icon ,url, title, target, iconOpen, open) {

 this.id = id;

 this.pid = pid;

 this.name = name;
 //是否在该节点添加复选框并设置选中状态，true:选中，false:不选中，null:不添加
 this.checked = checked==null?null:(checked || false);
 
 this.value = value;//增加value属性，选中复选框，输入框内得到的就是这个value值

 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, path) {
 //路径
 this.path = path ||'';
 //加载css文件
 this.loadCssFile(this.path+'dtree.css');

 this.config = {

  target     : null,

  folderLinks   : true,

  useSelection  : true,

  useCookies   : true,

  useLines    : true,

  useIcons    : true,

  useStatusText  : false,

  closeSameLevel : false,

  inOrder     : false,
  //是否显示复选框，true显示，false不显示
  checkbox:false,
  objValueId:''

 }

 this.icon = {

  root    : this.path + 'images/img/base.gif',

  folder   : this.path + 'images/img/folder.gif',

  folderOpen : this.path + 'images/img/folderopen.gif',

  node    : this.path + 'images/img/page.gif',

  empty    : this.path + 'images/img/empty.gif',

  line    : this.path + 'images/img/line.gif',

  join    : this.path + 'images/img/join.gif',

  joinBottom : this.path + 'images/img/joinbottom.gif',

  plus    : this.path + 'images/img/plus.gif',

  plusBottom : this.path + 'images/img/plusbottom.gif',

  minus    : this.path + 'images/img/minus.gif',

  minusBottom : this.path + 'images/img/minusbottom.gif',

  nlPlus   : this.path + 'images/img/nolines_plus.gif',

  nlMinus   : this.path + 'images/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;

};
//设置选中节点
dTree.prototype.checkedNodes=function(){
 if(this.config.objValueId==''){
  return;
 }
 var val=document.getElementById(this.config.objValueId).value;
 if(val==''){
  return;
 }
 val=val.split(',');
 var o=null;
 for(var i=0;i<val.length;i++){
  o=document.getElementById('cbx_'+this.obj+val[i]);
  if(o){
   o.checked=true;
  }
 }
};
//实现输入框内自动输入选中项的value值
dTree.prototype.update=function(){
 if(this.config.objValueId==''){
  return;
 }
 var cbx=null,v=[];
// v.push(aa);
 var ns=this.aNodes;
 for(var i=0;i<ns.length;i++){
  cbx=document.getElementById('cbx_'+this.obj+ns[i].id);
  if(cbx){
   if(cbx.checked){
    if(ns[i].pid!='0'){
     v.push(cbx.value);//原先是得到节点的id的，换成value，可以实现选中联系人，得到号码。
    }
   }
  }
 }
 document.getElementById(this.config.objValueId).value=v.join();
};
//加载css文件

dTree.prototype.loadCssFile=function (file) {
 try{
  var head=document.getElementsByTagName("head")[0];
  var links=head.getElementsByTagName('link');
  var i=0;
  for(var i=0;i<links.length;i++){
   if(links[i].getAttribute('href').toLowerCase().indexOf(file.toLowerCase())>-1){
    return;
   }
  }
  var f = document.createElement("link");
  f.setAttribute("rel", "stylesheet");
  f.setAttribute("type", "text/css");
  f.setAttribute("href", file);
  head.appendChild(f);
 }catch(ex){
  alert('加载css文件出错：'+ex.message);
 }
};

// Adds a new node to the node array

dTree.prototype.add = function(id, pid, name, checked, value,icon,url, title, target,iconOpen, open) {

 this.aNodes[this.aNodes.length] = new Node(id, pid, name, checked, value,icon,url, title, target,  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" id="dTree_'+this.obj+'">/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.pid==0) ? this.icon.folder : this.icon.node);
  //node.pid==0 这个条件是我自己改的，如果群组内无人的话，还是用群组的icon，而不是联系人的icon，大家可以自己试试的
  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="" />';

 }
 /***添加checkbox显示***/
 if(this.config.checkbox&&node.checked!=null){
  str += '<input '+ (node.checked?'checked=/"checked/"':'') +' onclick=/"javascript: ' + this.obj + (node._hc &&node.pid != this.root.id?'.o(' + nodeId + ')':'.update()')+';/" type=/"checkbox/" value=/"'+node.value+'/" name=/"cbx_'+this.obj+'/" id=/"cbx_'+ this.obj + nodeId+'/" title=/"'+node.name+'/"//>';
 }

 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();
 //更新选中值if(this.config.objValueId!='')
 this.update();

};

// 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) {
 try{

  eDiv = document.getElementById('d' + this.obj + id);

  eJoin = document.getElementById('j' + this.obj + id);

  //****选择
  if(this.config.checkbox){
   cbx = document.getElementById('cbx_' + this.obj + id);
   cbx.checked=status;
   cbxChild= eDiv.getElementsByTagName('input');
   for(var i=0 ;i<cbxChild.length;i++){
    cbxChild[i].checked=status;
   }
  }
  //****选择

  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';
 }catch(ex){
 }

};

// [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].value;

  }

 }

 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;

 }

};

大家可以借鉴一下，自己弄个小工程试试，dtree还是不错的。

 
摘自 超级大富