首页
所有分类
TAGS
文字工具 EMOJI BIBLE
编程 Javascript

Extjs中ComboBoxTree实现的下拉框树效果(自写)

Posted in Javascript onMay 28, 2013

最近涉及到的一个项目中，需要实现ComboBoxTree的效果，首先，看看效果吧……
Extjs中ComboBoxTree实现的下拉框树效果(自写) 
在Extjs中是没有这种效果的，所以得自己写，在网络上看了看别人的资料，自己再总结了一下，修改了一下，代码如下： 

Ext.ux.TreeCombo = Ext.extend(Ext.form.ComboBox, { 
constructor: function (cfg) { 
cfg = cfg || {}; 
Ext.ux.TreeCombo.superclass.constructor.call(this, Ext.apply({ 
maxHeight: 300, 
editable: false, 
mode: 'local', 
triggerAction: 'all', 
rootVisible: false, 
selectMode: 'all' 
}, cfg)); 
}, 
store: new Ext.data.SimpleStore({ 
fields: [], 
data: [[]] 
}), 
// 重写onViewClick，使展开树结点是不关闭下拉框 
onViewClick: function (doFocus) { 
var index = this.view.getSelectedIndexes()[0], s = this.store, r = s.getAt(index); 
if (r) { 
this.onSelect(r, index); 
} 
if (doFocus !== false) { 
this.el.focus(); 
} 
}, 
tree: null, 
// 隐藏值 
hiddenValue: null, 
getHiddenValue: function () { 
return this.hiddenValue; 
}, 
getValue: function () { //增加适用性，与原来combo组件一样 
return this.hiddenValue; 
}, 
setHiddenValue: function (code, dispText) { 
this.setValue(code); 
Ext.form.ComboBox.superclass.setValue.call(this, dispText); 
this.hiddenValue = code; 
}, 
initComponent: function () { 
var _this = this; 
var tplRandomId = 'deptcombo_' + Math.floor(Math.random() * 1000) + this.tplId 
this.tpl = "<div style='height:" + _this.maxHeight + "px' id='" + tplRandomId + "'></div>" 
this.tree = new Ext.tree.TreePanel({ 
border: false, 
enableDD: false, 
enableDrag: false, 
rootVisible: _this.rootVisible || false, 
autoScroll: true, 
trackMouseOver: true, 
height: _this.maxHeight, 
lines: true, 
singleExpand: true, 
root: new Ext.tree.AsyncTreeNode({ 
id: _this.rootId, 
text: _this.rootText, 
iconCls: 'ico-root', 
expanded: true, 
leaf: false, 
border: false, 
draggable: false, 
singleClickExpand: false, 
hide: true 
}), 
loader: new Ext.tree.TreeLoader({ 
nodeParameter: 'ID', 
requestMethod: 'GET', 
dataUrl: _this.url 
}) 
}); 
this.tree.on('click', function (node) { 
if ((_this.selectMode == 'leaf' && node.leaf == true) || _this.selectMode == 'all') { 
if (_this.fireEvent('beforeselect', _this, node)) { 
_this.fireEvent('select', _this, node); 
} 
} 
}); 
this.on('select', function (obj, node) { 
var dispText = node.text; 
var code = node.id; 
obj.setHiddenValue(code, dispText); 
obj.collapse(); 
}); 
this.on('expand', function () { 
this.tree.render(tplRandomId); 
}); 
Ext.ux.TreeCombo.superclass.initComponent.call(this); 
} 
}) 
Ext.reg("treecombo", Ext.ux.TreeCombo);

之后呢，在主页中添加Extjs类库 
<link href="../ext/resources/css/ext-all.css" rel="stylesheet" type="text/css" /> 
<script src="../ext/adapter/ext/ext-base.js" type="text/javascript"></script> 
<script src="../ext/ext-all.js" type="text/javascript"></script> 
<script src="../ext/src/locale/ext-lang-zh_CN.js" type="text/javascript"></script> 
<script src="../ext/ComboBoxTree.js" type="text/javascript"></script> 
<script src="login.js" type="text/javascript"></script>

其中，login.js的代码如下： 
/* File Created: 五月 27, 2013 */ 
Ext.onReady(function () { 
var _window = new Ext.Window({ 
title: "查询条件", 
renderTo: Ext.getBody(), 
frame: true, 
plain: true, 
buttonAlign: "center", 
closeAction: "hide", 
maximizable: true, 
closable: true, 
bodyStyle: "padding:20px", 
width: 350, 
height: 300, 
layout: "form", 
lableWidth: 110, 
defaults: { xtype: "textfield", width: 180 }, 
items: [ 
{ 
fieldLabel: "案件编号", 
anchor: "100%" 
}, 
{ 
xtype: "datefield", 
fieldLabel: "案发时间", 
anchor: "100%" 
}, 
{ 
fieldLabel: "举报人", 
anchor: "100%" 
}, 
{ 
fieldLabel: "被举报单位或个人", 
anchor: "100%" 
}, 
{ 
xtype: "treecombo", 
fieldLabel: "案件发生地", 
anchor: "100%", 
url: "http://localhost:1502/treeData.ashx"/// <reference path="../treeData.ashx" /> 
}, 
{ 
xtype: "treecombo", 
fieldLabel: "案件类型", 
anchor: "100%", 
url: "http://localhost:1502/window/ajwflx.ashx" 
}, 
{ 
xtype: "treecombo", 
fieldLabel: "案件性质", 
anchor: "100%", 
url: "http://localhost:1502/window/ajwfxz.ashx" 
} 
], 
buttons: [{ text: "确定" }, { text: "取消", handler: function () { _window.hide(); } }] 
}) 
_window.show(); 
})

treedata.ashxd的内容为： 
string strTreeNode = "[" + 
"{'id':150100,'leaf':false,expanded:false,'text':'呼和浩特市国土资源局','children':[" + 
"{'id':150101,'leaf':true,'children':null,'text':'市辖区国土资源局'}," + 
"{'id':150102,'leaf':true,'children':null,'text':'新城区国土资源局'}," + 
"{'id':150103,'leaf':true,'children':null,'text':'回民区国土资源局'}," + 
"{'id':150104,'leaf':true,'children':null,'text':'玉泉区国土资源局'}," + 
"{'id':150105,'leaf':true,'children':null,'text':'赛罕区国土资源局'}," + 
"{'id':150121,'leaf':true,'children':null,'text':'土默特左旗国土资源局'}," + 
"{'id':150122,'leaf':true,'children':null,'text':'托克托县国土资源局'}," + 
"{'id':150123,'leaf':true,'children':null,'text':'和林格尔县国土资源局'}," + 
"{'id':150124,'leaf':true,'children':null,'text':'清水河县国土资源局'}," + 
"{'id':150125,'leaf':true,'children':null,'text':'武川县国土资源局'}" + 
"]}," + 
"{'id':150200,'leaf':false,expanded:false,'text':'包头市国土资源局','children':[" + 
"{'id':150201,'leaf':true,'children':null,'text':'市辖区国土资源局'}," + 
"{'id':150202,'leaf':true,'children':null,'text':'东河区国土资源局'}," + 
"{'id':150203,'leaf':true,'children':null,'text':'昆都仑区国土资源局'}," + 
"{'id':150204,'leaf':true,'children':null,'text':'青山区国土资源局'}," + 
"{'id':150205,'leaf':true,'children':null,'text':'石拐区国土资源局'}," + 
"{'id':150206,'leaf':true,'children':null,'text':'白云矿区国土资源局'}," + 
"{'id':150207,'leaf':true,'children':null,'text':'九原区国土资源局'}," + 
"{'id':150221,'leaf':true,'children':null,'text':'土默特右旗国土资源局'}," + 
"{'id':150222,'leaf':true,'children':null,'text':'固阳县国土资源局'}," + 
"{'id':150223,'leaf':true,'children':null,'text':'达尔罕茂明安联合旗国土资源局'}" + 
"]}," + 
"{'id':150300,'leaf':false,expanded:false,'text':'乌海市国土资源局','children':[" + 
"{'id':150301,'leaf':true,'children':null,'text':'市辖区国土资源局'}," + 
"{'id':150302,'leaf':true,'children':null,'text':'海勃湾区国土资源局'}," + 
"{'id':150303,'leaf':true,'children':null,'text':'海南区国土资源局'}," + 
"{'id':150304,'leaf':true,'children':null,'text':'乌达区国土资源局'}" + 
"]}," + 
"{'id':150400,'leaf':false,expanded:false,'text':'赤峰市国土资源局','children':[" + 
"{'id':150401,'leaf':true,'children':null,'text':'市辖区国土资源局'}," + 
"{'id':150402,'leaf':true,'children':null,'text':'红山区国土资源局'}," + 
"{'id':150403,'leaf':true,'children':null,'text':'元宝山区国土资源局'}," + 
"{'id':150404,'leaf':true,'children':null,'text':'松山区国土资源局'}," + 
"{'id':150421,'leaf':true,'children':null,'text':'阿鲁科尔沁旗国土资源局'}," + 
"{'id':150422,'leaf':true,'children':null,'text':'巴林左旗国土资源局'}," + 
"{'id':150423,'leaf':true,'children':null,'text':'巴林右旗国土资源局'}," + 
"{'id':150424,'leaf':true,'children':null,'text':'林西县国土资源局'}," + 
"{'id':150425,'leaf':true,'children':null,'text':'克什克腾旗国土资源局'}," + 
"{'id':150426,'leaf':true,'children':null,'text':'翁牛特旗国土资源局'}," + 
"{'id':150428,'leaf':true,'children':null,'text':'喀喇沁旗国土资源局'}," + 
"{'id':150429,'leaf':true,'children':null,'text':'宁城县国土资源局'}," + 
"{'id':150430,'leaf':true,'children':null,'text':'敖汉旗国土资源局'}" + 
"]}," + 
"{'id':150500,'leaf':false,expanded:false,'text':'通辽市国土资源局','children':[" + 
"{'id':150501,'leaf':true,'children':null,'text':'市辖区国土资源局'}," + 
"{'id':150502,'leaf':true,'children':null,'text':'科尔沁区国土资源局'}," + 
"{'id':150521,'leaf':true,'children':null,'text':'科尔沁左翼中旗国土资源局'}," + 
"{'id':150522,'leaf':true,'children':null,'text':'科尔沁左翼后旗国土资源局'}," + 
"{'id':150523,'leaf':true,'children':null,'text':'开鲁县国土资源局'}," + 
"{'id':150524,'leaf':true,'children':null,'text':'库伦旗国土资源局'}," + 
"{'id':150525,'leaf':true,'children':null,'text':'奈曼旗国土资源局'}," + 
"{'id':150526,'leaf':true,'children':null,'text':'扎鲁特旗国土资源局'}," + 
"{'id':150581,'leaf':true,'children':null,'text':'霍林郭勒市国土资源局'}" + 
"]}," + 
"{'id':150600,'leaf':false,expanded:false,'text':'鄂尔多斯市国土资源局','children':[" + 
"{'id':150602,'leaf':true,'children':null,'text':'东胜区国土资源局'}," + 
"{'id':150621,'leaf':true,'children':null,'text':'达拉特旗国土资源局'}," + 
"{'id':150622,'leaf':true,'children':null,'text':'准格尔旗国土资源局'}," + 
"{'id':150623,'leaf':true,'children':null,'text':'鄂托克前旗国土资源局'}," + 
"{'id':150624,'leaf':true,'children':null,'text':'鄂托克旗国土资源局'}," + 
"{'id':150625,'leaf':true,'children':null,'text':'杭锦旗国土资源局'}," + 
"{'id':150626,'leaf':true,'children':null,'text':'乌审旗国土资源局'}," + 
"{'id':150627,'leaf':true,'children':null,'text':'伊金霍洛旗国土资源局'}" + 
"]}," + 
"{'id':150700,'leaf':false,expanded:false,'text':'呼伦贝尔市国土资源局','children':[" + 
"{'id':150701,'leaf':true,'children':null,'text':'市辖区国土资源局'}," + 
"{'id':150702,'leaf':true,'children':null,'text':'海拉尔区国土资源局'}," + 
"{'id':150721,'leaf':true,'children':null,'text':'阿荣旗国土资源局'}," + 
"{'id':150722,'leaf':true,'children':null,'text':'莫力达瓦达斡尔族自治旗国土资源局'}," + 
"{'id':150723,'leaf':true,'children':null,'text':'鄂伦春自治旗国土资源局'}," + 
"{'id':150724,'leaf':true,'children':null,'text':'鄂温克族自治旗国土资源局'}," + 
"{'id':150725,'leaf':true,'children':null,'text':'陈巴尔虎旗国土资源局'}," + 
"{'id':150726,'leaf':true,'children':null,'text':'新巴尔虎左旗国土资源局'}," + 
"{'id':150727,'leaf':true,'children':null,'text':'新巴尔虎右旗国土资源局'}," + 
"{'id':150781,'leaf':true,'children':null,'text':'满洲里市国土资源局'}," + 
"{'id':150782,'leaf':true,'children':null,'text':'牙克石市国土资源局'}," + 
"{'id':150783,'leaf':true,'children':null,'text':'扎兰屯市国土资源局'}," + 
"{'id':150784,'leaf':true,'children':null,'text':'额尔古纳市国土资源局'}," + 
"{'id':150785,'leaf':true,'children':null,'text':'根河市国土资源局'}" + 
"]}," + 
"{'id':150800,'leaf':false,expanded:false,'text':'巴彦淖尔市国土资源局','children':[" + 
"{'id':150801,'leaf':true,'children':null,'text':'市辖区国土资源局'}," + 
"{'id':150802,'leaf':true,'children':null,'text':'临河区国土资源局'}," + 
"{'id':150821,'leaf':true,'children':null,'text':'五原县国土资源局'}," + 
"{'id':150822,'leaf':true,'children':null,'text':'磴口县国土资源局'}," + 
"{'id':150823,'leaf':true,'children':null,'text':'乌拉特前旗国土资源局'}," + 
"{'id':150824,'leaf':true,'children':null,'text':'乌拉特中旗国土资源局'}," + 
"{'id':150825,'leaf':true,'children':null,'text':'乌拉特后旗国土资源局'}," + 
"{'id':150826,'leaf':true,'children':null,'text':'杭锦后旗国土资源局'}" + 
"]}," + 
"{'id':150900,'leaf':false,expanded:false,'text':'乌兰察布市国土资源局','children':[" + 
"{'id':150901,'leaf':true,'children':null,'text':'市辖区国土资源局'}," + 
"{'id':150902,'leaf':true,'children':null,'text':'集宁区国土资源局'}," + 
"{'id':150921,'leaf':true,'children':null,'text':'卓资县国土资源局'}," + 
"{'id':150922,'leaf':true,'children':null,'text':'化德县国土资源局'}," + 
"{'id':150923,'leaf':true,'children':null,'text':'商都县国土资源局'}," + 
"{'id':150924,'leaf':true,'children':null,'text':'兴和县国土资源局'}," + 
"{'id':150925,'leaf':true,'children':null,'text':'凉城县国土资源局'}," + 
"{'id':150926,'leaf':true,'children':null,'text':'察哈尔右翼前旗国土资源局'}," + 
"{'id':150927,'leaf':true,'children':null,'text':'察哈尔右翼中旗国土资源局'}," + 
"{'id':150928,'leaf':true,'children':null,'text':'察哈尔右翼后旗国土资源局'}," + 
"{'id':150929,'leaf':true,'children':null,'text':'四子王旗国土资源局'}," + 
"{'id':150981,'leaf':true,'children':null,'text':'丰镇市国土资源局'}" + 
"]}," + 
"{'id':152200,'leaf':false,expanded:false,'text':'兴安盟国土资源局','children':[" + 
"{'id':152201,'leaf':true,'children':null,'text':'乌兰浩特市国土资源局'}," + 
"{'id':152202,'leaf':true,'children':null,'text':'阿尔山市国土资源局'}," + 
"{'id':152221,'leaf':true,'children':null,'text':'科尔沁右翼前旗国土资源局'}," + 
"{'id':152222,'leaf':true,'children':null,'text':'科尔沁右翼中旗国土资源局'}," + 
"{'id':152223,'leaf':true,'children':null,'text':'扎赉特旗国土资源局'}," + 
"{'id':152224,'leaf':true,'children':null,'text':'突泉县国土资源局'}" + 
"]}," + 
"{'id':152500,'leaf':false,expanded:false,'text':'锡林郭勒盟国土资源局','children':[" + 
"{'id':152501,'leaf':true,'children':null,'text':'二连浩特市国土资源局'}," + 
"{'id':152502,'leaf':true,'children':null,'text':'锡林浩特市国土资源局'}," + 
"{'id':152522,'leaf':true,'children':null,'text':'阿巴嘎旗国土资源局'}," + 
"{'id':152523,'leaf':true,'children':null,'text':'苏尼特左旗国土资源局'}," + 
"{'id':152524,'leaf':true,'children':null,'text':'苏尼特右旗国土资源局'}," + 
"{'id':152525,'leaf':true,'children':null,'text':'东乌珠穆沁旗国土资源局'}," + 
"{'id':152526,'leaf':true,'children':null,'text':'西乌珠穆沁旗国土资源局'}," + 
"{'id':152527,'leaf':true,'children':null,'text':'太仆寺旗国土资源局'}," + 
"{'id':152528,'leaf':true,'children':null,'text':'镶黄旗国土资源局'}," + 
"{'id':152529,'leaf':true,'children':null,'text':'正镶白旗国土资源局'}," + 
"{'id':152530,'leaf':true,'children':null,'text':'正蓝旗国土资源局'}," + 
"{'id':152531,'leaf':true,'children':null,'text':'多伦县国土资源局'}" + 
"]}," + 
"{'id':152900,'leaf':false,expanded:false,'text':'阿拉善盟国土资源局','children':[" + 
"{'id':152921,'leaf':true,'children':null,'text':'阿拉善左旗国土资源局'}," + 
"{'id':152922,'leaf':true,'children':null,'text':'阿拉善右旗国土资源局'}," + 
"{'id':152923,'leaf':true,'children':null,'text':'额济纳旗国土资源局'}" + 
"]}" + 
"]"; 
context.Response.Write(strTreeNode);

如此，上面所述的效果就实现了……

Extjs中ComboBoxTree实现的下拉框树效果(自写)

声明：登载此文出于传递更多信息之目的，并不意味着赞同其观点或证实其描述。

Javascript 相关文章推荐
jquery 日期分离成年月日的代码
May 14 Javascript
jQuery动态设置form表单的enctype值(实现代码)
Jul 04 Javascript
再探JavaScript作用域
Sep 24 Javascript
基于jQuery实现的文字按钮表单特效整理
Dec 07 Javascript
JavaScript电子时钟倒计时
Jan 09 Javascript
详解JavaScript中基于原型prototype的继承特性
May 05 Javascript
jQuery实现的表头固定效果实例【附完整demo源码下载】
Aug 01 Javascript
JavaScript、C# URL编码、解码总结
Jan 21 Javascript
js正则表达式验证密码强度【推荐】
Mar 03 Javascript
详解如何在Vue项目中导出Excel
Apr 19 Javascript
vue父组件给子组件的组件传值provide inject的方法
Oct 23 Javascript
使用原生javascript开发计算器实例代码
Feb 21 Javascript
jQuery实现可拖动的浮动层完整代码
May 27 #Javascript
Jquery实现视频播放页面的关灯开灯效果
May 27 #Javascript
jquery scrollTop方法根据滚动像素显示隐藏顶部导航条
May 27 #Javascript
jquery实现的可隐藏重现的靠边悬浮层实例代码
May 27 #Javascript
jQuery解决下拉框select设宽度时IE 6/7/8下option超出显示不全
May 27 #Javascript
div当滚动到页面顶部的时候固定在顶部实例代码
May 27 #Javascript
使用jquery实现div的tab切换实例代码
May 27 #Javascript
PHILIPS(3) SANGEAN(1) S400(1) 山进(2) L4X25T(1) ATS-909X(1) D1835(1) Grundig(1) D1875(1) 飞利浦(2)
You might like
PHP中实现进程间通讯
2006/10/09 PHP
php出现Cannot modify header information问题的解决方法大全
2008/04/09 PHP
利用PHP实现图片等比例放大和缩小的方法详解
2013/06/06 PHP
Javascript 更新 JavaScript 数组的 uniq 方法
2008/01/23 Javascript
JS 参数传递的实际应用代码分析
2009/09/13 Javascript
用Javascript实现Sleep暂停功能代码
2010/09/03 Javascript
常见的原始JS选择器使用方法总结
2014/04/09 Javascript
JavaScript strike方法入门实例（给字符串加上删除线）
2014/10/17 Javascript
javascript实现鼠标放上后下边对应内容变换的效果
2015/08/06 Javascript
javaScript中的原型解析【推荐】
2016/05/05 Javascript
使用bootstraptable插件实现表格记录的查询、分页、排序操作
2017/08/06 Javascript
详解angular2 控制视图的封装模式
2018/12/27 Javascript
Node.js 在本地生成日志文件的方法
2020/02/07 Javascript
Selenium执行Javascript脚本参数及返回值过程详解
2020/04/01 Javascript
在Vue 中实现循环渲染多个相同echarts图表
2020/07/20 Javascript
Vant picker 多级联动操作
2020/11/02 Javascript
python双向链表实现实例代码
2013/11/21 Python
Python新手在作用域方面经常容易碰到的问题
2015/04/03 Python
Python中用于转换字母为小写的lower()方法使用简介
2015/05/19 Python
python获取各操作系统硬件信息的方法
2015/06/03 Python
python内置函数：lambda、map、filter简单介绍
2017/11/16 Python
Pandas透视表（pivot_table）详解
2019/07/22 Python
详解Pycharm出现out of memory的终极解决方法
2020/03/03 Python
解决pycharm中opencv-python导入cv2后无法自动补全的问题(不用作任何文件上的修改)
2020/03/05 Python
python针对Oracle常见查询操作实例分析
2020/04/30 Python
Python爬虫爬取有道实现翻译功能
2020/11/27 Python
适合各种场合的美食礼品：Harry & David
2016/08/03 全球购物
英国最大线上综合鞋类商城：Office
2017/12/08 全球购物
倩碧英国官网：Clinique英国
2018/08/10 全球购物
物业保安主管岗位职责
2013/12/25 职场文书
奉献爱心演讲稿
2014/09/04 职场文书
初中毕业典礼演讲稿
2014/09/09 职场文书
民政局办理协议离婚（范本）
2014/10/25 职场文书
2014年工人工作总结
2014/11/25 职场文书
2015暑期社会实践通讯稿
2015/07/18 职场文书
浅谈Golang 嵌套 interface 的赋值问题
2021/04/29 Golang