ztreeDeptSelect 基于jquery和ztree的部门选择插件

插件介绍

首先我们来看插件的功能演示(效果)：

插件准备好后。前台只需编写html：

<input type="text" class="deptName" />

然后在javascript中渲染插件(代码使用jQuery写法)：

$(".deptName").ztreeDeptSelect();

插件即渲染完成。

此插件已发布至github，源码地址： https://github.com/harveyhang/ztreeDeptSelect

需要的朋友，请直接从github下载源码。

后台请求数据使用ASP.NET完成，基于.NET Framework4.0。插件将会不断的完善中，第一次分享代码至github，希望园友们支持~

使用详解

1.修改代码获取部门数据来源，即重新组织DeptDialogDataHandler.ashx的代码。源代码中，.ashx只是示例，是静态数据，是假定查询结果返回的数据；

   通常情况下部门数据来自数据库，所以请根据实际项目来更改获取部门数据的代码。

2.部门树依赖于zTree(一款部门树插件),插件依赖于jQuery。所以请确保项目中有jquery和zTree的文件。具体请参考demo文件夹下的index.html文件和

   src文件夹下的deptDialog.html文件。

3.目前插件提供三种使用方法：简单调用，设置默认值，设置参数 ；三种使用方法在demoindex.html都有说明。

部门数据的来源

加载部门树的前台代码：

$(document).ready(function () {
            var zNodes;
            //assign root data to zNodes.
            $.ajax({
                url: 'DeptDialogDataHandler.ashx',
                type: 'post',
                dataType: 'json',
                async: false,
                data: { 'ajaxMethod': 'GetRootData' },
                success: function (data) {
                    zNodes = data;
                }
            });

            //tree setting
            var setting = {
                async: {
                    enable: true, 
                    url: "DeptDialogDataHandler.ashx",
                    autoParam: ["id"], // Parameters of the parent node attribute that is automatically committed when the asynchronous load is loaded
                    otherParam: ["ajaxMethod", 'AsyncCurrentNodeChildren'], //ajax request parameters
                    type: 'post',
                    dataType: 'json'
                },
                view: {
                    showIcon: true,
                    dblClickExpand: false
                },
                showLine: true, // show ztree connect line
                data: {  //Using pId to identify the relationship between father and son 
                    simpleData: {
                        enable: true
                    }
                },
                callback: { //callback function.
                    onDblClick: zTreeOnDblClick,
                    asyncSuccess: zTreeOnAsyncSuccess
                }
            };
            //init ztree.
            $.fn.zTree.init($("#treeDemo"), setting, zNodes);
        });

handler文件的后台代码：

<%@ WebHandler Language="C#" Class="DeptDialogDataHandler" %>

using System;
using System.Web;
using Newtonsoft.Json;

/// <summary>
/// Ajax Data Handler.
/// Author: https://github.com/harveyhang
/// Tips：Modify code to apply your own business...
/// </summary>
public class DeptDialogDataHandler : IHttpHandler {
    public void ProcessRequest (HttpContext context) {
        //static data for test,this is the depts data...
        var depts = new[]{ 
            new {deptId = 0, deptName = "All Depts", parentDeptId = -1 },
            new {deptId = 1, deptName = "Technology Dept", parentDeptId = 0 },
            new {deptId = 2, deptName = "Software Dept", parentDeptId = 1 },
            new {deptId = 3, deptName = "Hardware Dept", parentDeptId = 1 },
            new {deptId = 4, deptName = "Human Resource Dept", parentDeptId = 0 } 
        };
        //convert data type to ztree 
        //... convert process is omitted
        /**
         * data convert instruction:
         * the previous code section has three common properties:deptId,deptName,parentDeptId ,
         * which was converted to these properties under:        id    ,name    ,pId
         * if department node has child,set isParent=true;else,set isParent=false;
         **/
        var zTreeDepts = new[] { 
            new {id = 0, name = "All Depts", pId = -1, isParent=true },
            new {id = 1, name = "Technology Dept", pId = 0, isParent=true },
            new {id = 2, name = "Software Dept", pId = 1, isParent=false },
            new {id = 3, name = "Hardware Dept", pId = 1, isParent=false },
            new {id = 4, name = "Human Resource Dept", pId = 0, isParent=false } 
        };
        
        try
        {
            string ajaxMethod = context.Request["ajaxMethod"].ToString();//get ajax method
            System.Reflection.MethodInfo method = this.GetType().GetMethod(ajaxMethod);
            if (method != null)
                method.Invoke(this, new object[] { context });//execute method
        }
        catch (Exception)
        {
            throw;
        }
        finally
        {
            context.Response.End();
        }
    }
 
    /// <summary>
    /// async load children
    /// </summary>
    /// <param name="context"></param>
    public void AsyncCurrentNodeChildren(HttpContext context)
    {
        try
        {
            int id = int.Parse(context.Request.Params["id"]);
            var childrenData = new[] { 
                new {id = 1, name = "Technology Dept", pId = 0, isParent=true },
                new {id = 4, name = "Human Resource Dept", pId = 0, isParent=false } 
            };
            switch(id)
            {//suppose the data was getted
                case 0:
                    break;
                case 1:
                    childrenData = new[] { 
                        new {id = 2, name = "Software Dept", pId = 1, isParent=false },
                        new {id = 3, name = "Hardware Dept", pId = 1, isParent=false }
                    };
                    break;
                case 2:
                case 3:
                case 4:
                    childrenData = null;
                    break;
            }
            context.Response.Write(JsonConvert.SerializeObject(childrenData));
        }
        catch (Exception)
        {
            throw;
        }
    }
    
    /// <summary>
    /// root data
    /// </summary>
    /// <param name="context"></param>
    public void GetRootData(HttpContext context)
    {
        try
        {
            //suppose the data was getted
            var root = new { id = 0, name = "All Depts", pId = -1, isParent = true };
            context.Response.Write(JsonConvert.SerializeObject(root));
        }
        catch (Exception)
        {
            throw;
        }
    }

    public bool IsReusable
    {
        get
        {
            return false;
        }
    }

}

此部分可以改为其它网页语言，如php，java等。因为插件是前台通用的 ，后台数据可以根据实际需要定制。

总结

目前此插件尚有一个未修复的bug：“用Google Chrome浏览器时，部门窗口无法弹出”。因Chrome已阻止了js的showModalDialog方法。

IE或火狐等主流浏览器尚未发现有bug。当然，欢迎广大园友批评指正。

由于是上github的项目，代码注释全部为本人"手写"的英文。本人英语水平一般，这蹩脚的英语，，，还望诸位见谅~

如果各位觉得github上的英文描述不清晰，或者您对此插件有任何建议，欢迎留言一起交流~

最后，

希望本文对你有帮助。