dtree 网页树状菜单及传递对象集合到js内,动态生成节点

  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:

  

复制代码 代码如下:

  Codepublic 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:

  

复制代码 代码如下:

  <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:

  

复制代码 代码如下:

  Codefunction 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

  

dtree 网页树状菜单及传递对象集合到js内,动态生成节点

                                

dtree 网页树状菜单及传递对象集合到js内,动态生成节点

我改写的dtree 的js:

  

复制代码 代码如下:

  // 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。