ztree实现根节点右击事件，弹出菜单进行增删改操作
需求，右击树节点，出现编辑和删除的提示框
图片.png
1：在setting 配置里面，给callback设置，右击事件onRightClick:
图片.png
2：写一个函数onRightClick
function onRightClick(event, treeId, treeNode) {
}
3：禁用默认鼠标右击事件
document.oncontextmenu = function(){
return false;
}
4：父节点不需要点击事件，父节点为1，如果节点为1 的时候，不执行下一步
if (treeNode.id == "1") {
return;
}
以上步骤，组成右击事件以下代码：
//右击事件
function onRightClick(event, treeId, treeNode) {
document.oncontextmenu = function(){
return false;
}
//alert(1)
if (treeNode.id == "1") {
return;
}
if (treeNode) {
zTreeObj.selectNode(treeNode);
showContextMenu(treeNode.organId,treeNode.leaf);
/*showContextMenu(treeNode.organId,treeNode.leaf, event.clientX -10, event.clientY -10);*/
}
}
众所周知，在PC端，我们通常用event.clienX或者event.clientY来获取手指的坐标，注释部分的代码控制提示框的位置。
5：触发事件之后，出现提示框
jsp代码：
<div class="dropdown open" id="treeContextMenu" style="display: none;position: absolute">
<ul class="dropdown-menu">
<li><a href="javascript:;" id="toUpdateBtn">编辑</a></li>
<li><a href="#" id="deleteBtn" data-target="#confirmDialog" data-toggle="modal">删除</a></li>
</ul>
</div>
js代码
function showContextMenu(type,leaf, x, y) {
if (type == -1) {
$(".dropdown-menu").find("li:not(:first)").hide();
} else if(leaf){
$(".dropdown-menu").find("li:first").hide();
}else{
$(".dropdown-menu").find("li").show();
}
$("#treeContextMenu").css({"top": y + "px", "left": x + "px"}).show();
$("body").on("mousedown", onBodyMouseDown);
}
6：提示框的一些处理
function hideContextMenu() {
$("#treeContextMenu").hide();
$("body").off("mousedown", onBodyMouseDown);
}
function onBodyMouseDown(event) {
if (!(event.target.id == "treeContextMenu" || $(event.target).parents("#treeContextMenu").length > 0)) {
hideContextMenu();
}
}
项目js代码展示（仅供参考）：
var detain = function() {
AssetSavetype = null;
AssetSelecttype = null;
getFloorList();
initLoadMap('detainmap');
var beforeNodeID;
var basePath;
var url;
var setting = {
check : {
enable : true,
chkStyle : "radio",
radioType : "all"
},
view : {
selectedMulti : true,
showLine : false
},
data : {
key : {
name : "name"
},
simpleData : {
enable : true,
idKey : "id",
pIdKey : "pId",
}
},
edit : {
enable : true,
removeTitle : "删除节点",
showRemoveBtn : setRemoveBtn,
showRenameBtn : setRenameBtn
},
async : {
enable : true,
url : "/bison/design/detain/getTree",
autoParam : [ "id" ],
type : "get",
dataFilter : ajaxDataFilter,
dataType : "json"
},
callback : {
onRightClick: onRightClick,
onCheck : zTreeOnCheck,
beforeRemove : zTreeBeforeRemove,
onRemove : zTreeOnRemove,
onRename : zTreeOnRename
}
};
var zTreeObj;
// 初始化根节点
function initTree() {
$.get(basePath + "/design/detain/initNode?type=1", function(data) {
// 设置父节点不显示checkbox
data.returnData.node.nocheck = true;
zTreeObj = $.fn.zTree.init($("#zTree"), setting,
data.returnData.node);
});
}
//右击事件
function onRightClick(event, treeId, treeNode) {
document.oncontextmenu = function(){
return false;
}
//alert(1)
if (treeNode.id == "1") {
return;
}
if (treeNode) {
zTreeObj.selectNode(treeNode);
showContextMenu(treeNode.organId,treeNode.leaf);
/*showContextMenu(treeNode.organId,treeNode.leaf, event.clientX -10, event.clientY -10);*/
}
}
function showContextMenu(type,leaf, x, y) {
if (type == -1) {
$(".dropdown-menu").find("li:not(:first)").hide();
} else if(leaf){
$(".dropdown-menu").find("li:first").hide();
}else{
$(".dropdown-menu").find("li").show();
}
$("#treeContextMenu").css({"top": y + "px", "left": x + "px"}).show();
$("body").on("mousedown", onBodyMouseDown);
}
function hideContextMenu() {
$("#treeContextMenu").hide();
$("body").off("mousedown", onBodyMouseDown);
}
function onBodyMouseDown(event) {
if (!(event.target.id == "treeContextMenu" || $(event.target).parents("#treeContextMenu").length > 0)) {
hideContextMenu();
}
}
//编辑信息
$("#toUpdateBtnd").on("click", function() {
layer.open({
type : 2,
title : '编辑信息',
area : [ '1000px', '650px' ],
fix : false, // �
content : basePath + 'personInfo/toAdduser',
end : function() {
}
});
});
function setRemoveBtn(treeId, treeNode) {
if(treeNode.id == 1){
return false;
}
return true;
}
function setRenameBtn(treeId, treeNode) {
if(treeNode.id == 1){
return false;
}
return true;
}
function zTreeBeforeRemove(treeId, treeNode) {
if (confirm("是否确认删除"))
return true;
return false;
}
function zTreeOnRemove(event, treeId, treeNode) {
$.ajax({
url : basePath + "/design/detain/deleteNode",
data : {
id : treeNode.id,
},
type : "get",
success : function(data) {
}
});
deleteDetain(treeNode.id);
}
function zTreeOnRename(event, treeId, treeNode) {
$.ajax({
url : basePath + "/design/detain/updateName",
data : {
id : treeNode.id,
name : treeNode.name
},
type : "POST",
success : function(data) {
}
});
}
// 异步加载数据过滤器
function ajaxDataFilter(treeId, parentNode, responseData) {
var data = responseData.returnData.treeList;
return data;
}
;
// 节点勾选事件
function zTreeOnCheck(event, treeId, treeNode) {
// 显示围栏
if (beforeNodeID != treeNode.id) {
electronicLayerOff = true;
beforeNodeID = treeNode.id;
}
showDetain([ treeNode.id ]);
}
;
// 获取项目路径
function getContextPath() {
var currentPath = window.document.location.href;
var pathName = window.document.location.pathname;
var pos = currentPath.indexOf(pathName);
var localhostPath = currentPath.substring(0, pos);
var projectName = pathName.substring(0,
pathName.substr(1).indexOf('/') + 1);
return (localhostPath + projectName);
}
// 显示配置记录
function showDetain(DetainNum) {
electronicLayer.getSource().clear();
if (electronicLayerOff) {
for (var num = 0; num < DetainNum.length; num++) {
var electronicParam = {
service : 'WFS',
version : '1.1.0',
request : 'GetFeature',
typeName : DBs + ':detain',
outputFormat : 'application/json',
cql_filter : "bid='" + DetainNum[num] + "'"
};
$.ajax({
url : wfsUrl,
data : $.param(electronicParam),
type : 'GET',
dataType : 'json',
success : function(response) {
var features = new ol.format.GeoJSON()
.readFeatures(response);
electronicLayer.getSource().addFeatures(features);
}
});
}
electronicLayerOff = false;
} else {
electronicLayerOff = true;
}
}
// 资产FID获取
var FIDObject = function(Filter, Typename) {
var Fid = [];
$.ajax({
url : wfsUrl,
data : {
service : 'WFS',
version : '1.1.0',
request : 'GetFeature',
typename : Typename,
outputFormat : 'application/json',
cql_filter : Filter
},
type : 'GET',
dataType : 'json',
async : false,
success : function(response) {
if (response.features.length == 1) {
Fid[0] = response.features[0].id;
} else if (response.features.length > 1) {
for (var i = 0; i < response.features.length; i++) {
Fid[i] = response.features[i].id;
}
} else {
}
}
});
return Fid;
};
// 删除配置记录
function deleteDetain(id) {
var Filter = "bid=" + "'" + id + "'";
var Typename = DBs + ':detain';
var newFeature = new ol.Feature();
newFeature.setId(FIDObject(Filter, Typename)[0]);
var tableType = 'detain';
updateNewFeature([ newFeature ], tableType, 'remove');
if (beforeNodeID == id) {
electronicLayer.getSource().clear();
}
}
// 添加配置
$("#adddetain").on("click", function() {
layer.open({
type : 2,
title : '添加配置',
area : [ '550px', '550px' ],
// fix : false, �
content : [ './adddetain.jsp', ],
end : function() {
initTree();
electronicLayer.getSource().clear();
}
});
});
return {
init : function() {
basePath = getContextPath();
initTree();
}
};
}();
原文作者：祈澈姑娘
原文链接：https://www.jianshu.com/u/05f416aefbe1创作不易，转载请告知
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