Extjs中ComboBoxTree實(shí)現(xiàn)的下拉框樹效果(自寫)

2019-11-20 22:40:55

字體：大中小

供稿：網(wǎng)友

最近涉及到的一個(gè)項(xiàng)目中，需要實(shí)現(xiàn)ComboBoxTree的效果，首先，看看效果吧……

在Extjs中是沒有這種效果的，所以得自己寫，在網(wǎng)絡(luò)上看了看別人的資料，自己再總結(jié)了一下，修改了一下，代碼如下：

 
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: [[]] 
}), 
// 重寫onViewClick，使展開樹結(jié)點(diǎn)是不關(guān)閉下拉框 
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, 
// 隱藏值 
hiddenValue: null, 
getHiddenValue: function () { 
return this.hiddenValue; 
}, 
getValue: function () { //增加適用性，與原來combo組件一樣 
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，在主頁中添加Extjs類庫

復(fù)制代碼代碼如下:

 
<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的代碼如下：

復(fù)制代碼代碼如下:

 
/* File Created: 五月 27, 2013 */ 
Ext.onReady(function () { 
var _window = new Ext.Window({ 
title: "查詢條件", 
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: "案件編號(hào)", 
anchor: "100%" 
}, 
{ 
xtype: "datefield", 
fieldLabel: "案發(fā)時(shí)間", 
anchor: "100%" 
}, 
{ 
fieldLabel: "舉報(bào)人", 
anchor: "100%" 
}, 
{ 
fieldLabel: "被舉報(bào)單位或個(gè)人", 
anchor: "100%" 
}, 
{ 
xtype: "treecombo", 
fieldLabel: "案件發(fā)生地", 
anchor: "100%", 
url: "http://localhost:1502/treeData.ashx"http:/// <reference path="../treeData.ashx" /> 
}, 
{ 
xtype: "treecombo", 
fieldLabel: "案件類型", 
anchor: "100%", 
url: "http://localhost:1502/window/ajwflx.ashx" 
}, 
{ 
xtype: "treecombo", 
fieldLabel: "案件性質(zhì)", 
anchor: "100%", 
url: "http://localhost:1502/window/ajwfxz.ashx" 
} 
], 
buttons: [{ text: "確定" }, { text: "取消", handler: function () { _window.hide(); } }] 
}) 
_window.show(); 
}) 

treedata.ashxd的內(nèi)容為：

復(fù)制代碼代碼如下:

 
string strTreeNode = "[" + 
"{'id':150100,'leaf':false,expanded:false,'text':'呼和浩特市國土資源局','children':[" + 
"{'id':150101,'leaf':true,'children':null,'text':'市轄區(qū)國土資源局'}," + 
"{'id':150102,'leaf':true,'children':null,'text':'新城區(qū)國土資源局'}," + 
"{'id':150103,'leaf':true,'children':null,'text':'回民區(qū)國土資源局'}," + 
"{'id':150104,'leaf':true,'children':null,'text':'玉泉區(qū)國土資源局'}," + 
"{'id':150105,'leaf':true,'children':null,'text':'賽罕區(qū)國土資源局'}," + 
"{'id':150121,'leaf':true,'children':null,'text':'土默特左旗國土資源局'}," + 
"{'id':150122,'leaf':true,'children':null,'text':'托克托縣國土資源局'}," + 
"{'id':150123,'leaf':true,'children':null,'text':'和林格爾縣國土資源局'}," + 
"{'id':150124,'leaf':true,'children':null,'text':'清水河縣國土資源局'}," + 
"{'id':150125,'leaf':true,'children':null,'text':'武川縣國土資源局'}" + 
"]}," + 
"{'id':150200,'leaf':false,expanded:false,'text':'包頭市國土資源局','children':[" + 
"{'id':150201,'leaf':true,'children':null,'text':'市轄區(qū)國土資源局'}," + 
"{'id':150202,'leaf':true,'children':null,'text':'東河區(qū)國土資源局'}," + 
"{'id':150203,'leaf':true,'children':null,'text':'昆都侖區(qū)國土資源局'}," + 
"{'id':150204,'leaf':true,'children':null,'text':'青山區(qū)國土資源局'}," + 
"{'id':150205,'leaf':true,'children':null,'text':'石拐區(qū)國土資源局'}," + 
"{'id':150206,'leaf':true,'children':null,'text':'白云礦區(qū)國土資源局'}," + 
"{'id':150207,'leaf':true,'children':null,'text':'九原區(qū)國土資源局'}," + 
"{'id':150221,'leaf':true,'children':null,'text':'土默特右旗國土資源局'}," + 
"{'id':150222,'leaf':true,'children':null,'text':'固陽縣國土資源局'}," + 
"{'id':150223,'leaf':true,'children':null,'text':'達(dá)爾罕茂明安聯(lián)合旗國土資源局'}" + 
"]}," + 
"{'id':150300,'leaf':false,expanded:false,'text':'烏海市國土資源局','children':[" + 
"{'id':150301,'leaf':true,'children':null,'text':'市轄區(qū)國土資源局'}," + 
"{'id':150302,'leaf':true,'children':null,'text':'海勃灣區(qū)國土資源局'}," + 
"{'id':150303,'leaf':true,'children':null,'text':'海南區(qū)國土資源局'}," + 
"{'id':150304,'leaf':true,'children':null,'text':'烏達(dá)區(qū)國土資源局'}" + 
"]}," + 
"{'id':150400,'leaf':false,expanded:false,'text':'赤峰市國土資源局','children':[" + 
"{'id':150401,'leaf':true,'children':null,'text':'市轄區(qū)國土資源局'}," + 
"{'id':150402,'leaf':true,'children':null,'text':'紅山區(qū)國土資源局'}," + 
"{'id':150403,'leaf':true,'children':null,'text':'元寶山區(qū)國土資源局'}," + 
"{'id':150404,'leaf':true,'children':null,'text':'松山區(qū)國土資源局'}," + 
"{'id':150421,'leaf':true,'children':null,'text':'阿魯科爾沁旗國土資源局'}," + 
"{'id':150422,'leaf':true,'children':null,'text':'巴林左旗國土資源局'}," + 
"{'id':150423,'leaf':true,'children':null,'text':'巴林右旗國土資源局'}," + 
"{'id':150424,'leaf':true,'children':null,'text':'林西縣國土資源局'}," + 
"{'id':150425,'leaf':true,'children':null,'text':'克什克騰旗國土資源局'}," + 
"{'id':150426,'leaf':true,'children':null,'text':'翁牛特旗國土資源局'}," + 
"{'id':150428,'leaf':true,'children':null,'text':'喀喇沁旗國土資源局'}," + 
"{'id':150429,'leaf':true,'children':null,'text':'寧城縣國土資源局'}," + 
"{'id':150430,'leaf':true,'children':null,'text':'敖漢旗國土資源局'}" + 
"]}," + 
"{'id':150500,'leaf':false,expanded:false,'text':'通遼市國土資源局','children':[" + 
"{'id':150501,'leaf':true,'children':null,'text':'市轄區(qū)國土資源局'}," + 
"{'id':150502,'leaf':true,'children':null,'text':'科爾沁區(qū)國土資源局'}," + 
"{'id':150521,'leaf':true,'children':null,'text':'科爾沁左翼中旗國土資源局'}," + 
"{'id':150522,'leaf':true,'children':null,'text':'科爾沁左翼后旗國土資源局'}," + 
"{'id':150523,'leaf':true,'children':null,'text':'開魯縣國土資源局'}," + 
"{'id':150524,'leaf':true,'children':null,'text':'庫倫旗國土資源局'}," + 
"{'id':150525,'leaf':true,'children':null,'text':'奈曼旗國土資源局'}," + 
"{'id':150526,'leaf':true,'children':null,'text':'扎魯特旗國土資源局'}," + 
"{'id':150581,'leaf':true,'children':null,'text':'霍林郭勒市國土資源局'}" + 
"]}," + 
"{'id':150600,'leaf':false,expanded:false,'text':'鄂爾多斯市國土資源局','children':[" + 
"{'id':150602,'leaf':true,'children':null,'text':'東勝區(qū)國土資源局'}," + 
"{'id':150621,'leaf':true,'children':null,'text':'達(dá)拉特旗國土資源局'}," + 
"{'id':150622,'leaf':true,'children':null,'text':'準(zhǔn)格爾旗國土資源局'}," + 
"{'id':150623,'leaf':true,'children':null,'text':'鄂托克前旗國土資源局'}," + 
"{'id':150624,'leaf':true,'children':null,'text':'鄂托克旗國土資源局'}," + 
"{'id':150625,'leaf':true,'children':null,'text':'杭錦旗國土資源局'}," + 
"{'id':150626,'leaf':true,'children':null,'text':'烏審旗國土資源局'}," + 
"{'id':150627,'leaf':true,'children':null,'text':'伊金霍洛旗國土資源局'}" + 
"]}," + 
"{'id':150700,'leaf':false,expanded:false,'text':'呼倫貝爾市國土資源局','children':[" + 
"{'id':150701,'leaf':true,'children':null,'text':'市轄區(qū)國土資源局'}," + 
"{'id':150702,'leaf':true,'children':null,'text':'海拉爾區(qū)國土資源局'}," + 
"{'id':150721,'leaf':true,'children':null,'text':'阿榮旗國土資源局'}," + 
"{'id':150722,'leaf':true,'children':null,'text':'莫力達(dá)瓦達(dá)斡爾族自治旗國土資源局'}," + 
"{'id':150723,'leaf':true,'children':null,'text':'鄂倫春自治旗國土資源局'}," + 
"{'id':150724,'leaf':true,'children':null,'text':'鄂溫克族自治旗國土資源局'}," + 
"{'id':150725,'leaf':true,'children':null,'text':'陳巴爾虎旗國土資源局'}," + 
"{'id':150726,'leaf':true,'children':null,'text':'新巴爾虎左旗國土資源局'}," + 
"{'id':150727,'leaf':true,'children':null,'text':'新巴爾虎右旗國土資源局'}," + 
"{'id':150781,'leaf':true,'children':null,'text':'滿洲里市國土資源局'}," + 
"{'id':150782,'leaf':true,'children':null,'text':'牙克石市國土資源局'}," + 
"{'id':150783,'leaf':true,'children':null,'text':'扎蘭屯市國土資源局'}," + 
"{'id':150784,'leaf':true,'children':null,'text':'額爾古納市國土資源局'}," + 
"{'id':150785,'leaf':true,'children':null,'text':'根河市國土資源局'}" + 
"]}," + 
"{'id':150800,'leaf':false,expanded:false,'text':'巴彥淖爾市國土資源局','children':[" + 
"{'id':150801,'leaf':true,'children':null,'text':'市轄區(qū)國土資源局'}," + 
"{'id':150802,'leaf':true,'children':null,'text':'臨河區(qū)國土資源局'}," + 
"{'id':150821,'leaf':true,'children':null,'text':'五原縣國土資源局'}," + 
"{'id':150822,'leaf':true,'children':null,'text':'磴口縣國土資源局'}," + 
"{'id':150823,'leaf':true,'children':null,'text':'烏拉特前旗國土資源局'}," + 
"{'id':150824,'leaf':true,'children':null,'text':'烏拉特中旗國土資源局'}," + 
"{'id':150825,'leaf':true,'children':null,'text':'烏拉特后旗國土資源局'}," + 
"{'id':150826,'leaf':true,'children':null,'text':'杭錦后旗國土資源局'}" + 
"]}," + 
"{'id':150900,'leaf':false,expanded:false,'text':'烏蘭察布市國土資源局','children':[" + 
"{'id':150901,'leaf':true,'children':null,'text':'市轄區(qū)國土資源局'}," + 
"{'id':150902,'leaf':true,'children':null,'text':'集寧區(qū)國土資源局'}," + 
"{'id':150921,'leaf':true,'children':null,'text':'卓資縣國土資源局'}," + 
"{'id':150922,'leaf':true,'children':null,'text':'化德縣國土資源局'}," + 
"{'id':150923,'leaf':true,'children':null,'text':'商都縣國土資源局'}," + 
"{'id':150924,'leaf':true,'children':null,'text':'興和縣國土資源局'}," + 
"{'id':150925,'leaf':true,'children':null,'text':'涼城縣國土資源局'}," + 
"{'id':150926,'leaf':true,'children':null,'text':'察哈爾右翼前旗國土資源局'}," + 
"{'id':150927,'leaf':true,'children':null,'text':'察哈爾右翼中旗國土資源局'}," + 
"{'id':150928,'leaf':true,'children':null,'text':'察哈爾右翼后旗國土資源局'}," + 
"{'id':150929,'leaf':true,'children':null,'text':'四子王旗國土資源局'}," + 
"{'id':150981,'leaf':true,'children':null,'text':'豐鎮(zhèn)市國土資源局'}" + 
"]}," + 
"{'id':152200,'leaf':false,expanded:false,'text':'興安盟國土資源局','children':[" + 
"{'id':152201,'leaf':true,'children':null,'text':'烏蘭浩特市國土資源局'}," + 
"{'id':152202,'leaf':true,'children':null,'text':'阿爾山市國土資源局'}," + 
"{'id':152221,'leaf':true,'children':null,'text':'科爾沁右翼前旗國土資源局'}," + 
"{'id':152222,'leaf':true,'children':null,'text':'科爾沁右翼中旗國土資源局'}," + 
"{'id':152223,'leaf':true,'children':null,'text':'扎賚特旗國土資源局'}," + 
"{'id':152224,'leaf':true,'children':null,'text':'突泉縣國土資源局'}" + 
"]}," + 
"{'id':152500,'leaf':false,expanded:false,'text':'錫林郭勒盟國土資源局','children':[" + 
"{'id':152501,'leaf':true,'children':null,'text':'二連浩特市國土資源局'}," + 
"{'id':152502,'leaf':true,'children':null,'text':'錫林浩特市國土資源局'}," + 
"{'id':152522,'leaf':true,'children':null,'text':'阿巴嘎旗國土資源局'}," + 
"{'id':152523,'leaf':true,'children':null,'text':'蘇尼特左旗國土資源局'}," + 
"{'id':152524,'leaf':true,'children':null,'text':'蘇尼特右旗國土資源局'}," + 
"{'id':152525,'leaf':true,'children':null,'text':'東烏珠穆沁旗國土資源局'}," + 
"{'id':152526,'leaf':true,'children':null,'text':'西烏珠穆沁旗國土資源局'}," + 
"{'id':152527,'leaf':true,'children':null,'text':'太仆寺旗國土資源局'}," + 
"{'id':152528,'leaf':true,'children':null,'text':'鑲黃旗國土資源局'}," + 
"{'id':152529,'leaf':true,'children':null,'text':'正鑲白旗國土資源局'}," + 
"{'id':152530,'leaf':true,'children':null,'text':'正藍(lán)旗國土資源局'}," + 
"{'id':152531,'leaf':true,'children':null,'text':'多倫縣國土資源局'}" + 
"]}," + 
"{'id':152900,'leaf':false,expanded:false,'text':'阿拉善盟國土資源局','children':[" + 
"{'id':152921,'leaf':true,'children':null,'text':'阿拉善左旗國土資源局'}," + 
"{'id':152922,'leaf':true,'children':null,'text':'阿拉善右旗國土資源局'}," + 
"{'id':152923,'leaf':true,'children':null,'text':'額濟(jì)納旗國土資源局'}" + 
"]}" + 
"]"; 
context.Response.Write(strTreeNode); 