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)

然后页面得到数据：

<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。