概述
· ExtJs5能够搭建Js的MVC框架,通过配置路由能够通过左边树形菜单导航到所需的页面,效果如下:
搭建JS框架
新建home.htm页面作为ExtJs加载的主体页面,页面引入ExtJs需要的JS和ExtJs入口Js文件app.js
<!DOCTYPE html> <html> <head> <meta charset="utf-8"> <meta http-equiv="X-UA-Compatible" content="IE=edge"> <title>ExtJS演示</title> <script type="text/javascript" src="Ext/ext-all.js"></script> <script type="text/javascript" src="Ext/ext-locale-zh_CN.js"></script> <link rel="stylesheet" type="text/css" href="Ext/packages/ext-theme-crisp/build/resources/ext-theme-crisp-all_01.css"> <script type="text/javascript" src="app.js"></script> </head> <body> </body> </html>
app.js是ExtJs框架的入口,新建ExtJs中Application程序,指定所有新建ExtJs类的命名空间必须是MyApp开头,类似 MyApp.***,另外在app.js同级目录下新建app文件夹,里面新建文件夹view和viewmodel,这些文件夹的命名和规则必须是确定,不能任意修改,否则文件加载的时候,找不到相应的Js文件;
//ExtJs的入口,加载该Js之后,自动调用launch方法内容项 Ext.application({ name : ‘MyApp‘, extend:‘MyApp.Application‘, autoCreateViewport:‘MyApp.view.main.Main‘, // controllers:[‘Users‘], listen: { controller: { ‘#‘: { unmatchedroute: ‘onUnmatchedRoute‘ } } }, onUnmatchedRoute: function(hash) { alert(‘Unmatched‘, hash); }, init:function(){ var me=this; me.setDefaultToken(‘all‘); }, launch : function() { } });
在app目录下,新建Application.js,命名MyApp.Application,代码如下,切记定义Js组件的名称,必须和文件路径对应
Ext.define(‘MyApp.Application‘,{ extend:‘Ext.app.Application‘, name:‘MyApp‘, // stores:[ // ‘UserStore@MyApp.store‘ // ] });
在app目录下,新建文件夹view\main,里面新建main.js,主要继承Ext.container.Container容器控件,负责页面布局使用,页面布局模式采用border使用,分为头部、导航、中间页面内容展示;
Ext.define(‘MyApp.view.main.Main‘,{ extend:‘Ext.container.Container‘, xtype:‘app-main‘, requires:[‘MyApp.view.main.MainController‘,‘MyApp.view.main.Header‘,‘MyApp.view.main.Navigation‘,‘MyApp.view.main.ContentPanel‘], controller:‘main‘, layout:{type:‘border‘}, items:[ {region:‘north‘,xtype:‘app-header‘}, {region:‘west‘,xtype:‘app-navigation‘}, {region:‘center‘,xtype:‘app-contentPanel‘} ] });
在app\view\main,新建总部内容MainController.js,类型是Ext.app.ViewController。内容如下,主要负责Main.js的Action和hander的绑定,控制页面的路由导航
var com={‘message-view‘:‘MyApp.view.message.MessageController‘,‘UserGrid‘:‘MyApp.view.user.UserGridController‘}; Ext.define(‘MyApp.view.main.MainController‘,{ extend:‘Ext.app.ViewController‘, requires:[ ‘Ext.window.MessageBox‘ ], alias:‘controller.main‘, control:{ ‘app-navigation‘:{ selectionchange:‘onTreeNavSelectionChange‘ } }, onTreeNavSelectionChange:function(selModel,records) { var record=records[0]; console.log(record.getId()); if(record) this.redirectTo(record.getId()); }, routes: { ‘:id‘: { action: ‘handleRout‘, before: ‘beforeHandleRout‘ } }, handleRout: function (id) { console.log(‘Handle:‘+id); var me=this, mainView = me.getView(), navigationTree = mainView.down(‘app-navigation‘), contentPanel = mainView.down(‘app-contentPanel‘), store=navigationTree.getStore(), node=store.getNodeById(id); contentPanel.removeAll(true), controlName=com[id]; Ext.create(controlName);//MyApp.view.message.MessageController var module = Ext.apply({}, { xtype: id, itemId: id, //glyph: node.get(‘glyph‘), title: node.get(‘text‘) // tooltip: node.get(‘text‘) }); contentPanel.add(module); var text = node.get(‘text‘), title = node.isLeaf() ? (node.parentNode.get(‘text‘) + ‘ - ‘ + text) : text; contentPanel.setTitle(title); //Ext.suspendLayouts(); //暂停布局 Ext.resumeLayouts(true); //恢复布局 }, beforeHandleRout: function (id, action) { //动态实例化controller action.stop(); var me=this, store=Ext.StoreMgr.get(‘NavigationStore‘); node=store.getNodeById(id); if(node) { action.resume(); } else { Ext.Msg.alert( ‘路由跳转失败‘, ‘找不到id为‘ + id + ‘ 的组件. 界面将跳转到应用初始界面‘, function() { me.redirectTo(‘all‘); } ); action.stop(); } }, });
在app\view\main,新建头部Header.js,内容如下
Ext.define(‘MyApp.view.main.Header‘,{ extend:‘Ext.Container‘, xtype:‘app-header‘, height:52, layout:{type:‘hbox‘,align:‘middle‘}, items:[ {xtype:‘component‘,html:‘<h2>XX系统</h2>‘}, {xtype:‘component‘,html:‘ExtJs实例‘,flex:1} ] });
在app\view\main,新建导航Navigation.js,内容如下,PS 树形结构的id名称要和视图的xtype对应
Ext.define("MyApp.view.main.Navigation",{ extend:‘Ext.tree.Panel‘, xtype:‘app-navigation‘, rootVisible:false, userArrows:true, // hideHeaders:true, width:250, minWidth:100, split:true, collapsible:true, store:Ext.create(‘Ext.data.TreeStore‘, { id:‘NavigationStore‘, root: { expanded: true, id:‘all‘, text:‘All‘, children: [ {text: "消息管理", id: "message-view", leaf: true}, {text: "用户列表", id: "UserGrid", leaf: true} ] } }) });
在app\view\main,新建总部内容ContentPanel.js,内容如下
Ext.define(‘MyApp.view.main.ContentPanel‘,{ extend:‘Ext.panel.Panel‘, xtype:‘app-contentPanel‘, autoScroll:true });
在app\view\user,新建用户页面UserGrid.js,内容如下
Ext.define(‘MyApp.view.user.UserGrid‘, { extend: ‘Ext.grid.Panel‘, xtype: ‘UserGrid‘, title: ‘用户列表‘, requires:[‘MyApp.store.UserStore‘], store:Ext.create(‘MyApp.store.UserStore‘), controller:‘usergrid‘, initComponent:function(){ var me = this; me.columns = [ {xtype: ‘rownumberer‘,header: ‘序号‘, width: 60, align: ‘center‘}, {xtype: ‘rownumberer‘,header: ‘用户名‘, width: 60, align: ‘center‘}, {xtype: ‘rownumberer‘,header: ‘年龄‘, width: 60, align: ‘center‘}, ]; me.callParent(); }, width: 400, height:600, border:true, listeners:{ itemdblclick: { fn: ‘userClick‘, scope: "controller" } } });
在app\view\user,新建用户视图控制器UserGridController.js,内容如下
Ext.define(‘MyApp.view.user.UserGridController‘,{ extend:‘Ext.app.ViewController‘, alias:‘controller.usergrid‘, requires:["MyApp.view.user.UserGrid"], userClick:function( view, record, item, index, e, eOpts){ alert(‘hello‘+record.get(‘name‘)) } });
在app\model ,新建UserModel.js,内容如下
Ext.define(‘MyApp.model.UserModel‘, { extend: ‘Ext.data.Model‘, fields: [ {name: ‘name‘, type: ‘string‘}, {name: ‘age‘, type: ‘int‘}, {name: ‘phone‘, type: ‘string‘} ] });
在app\store,新建UserStore.js,内容如下
Ext.define(‘MyApp.store.UserStore‘, { extend: ‘Ext.data.Store‘, model: ‘MyApp.model.UserModel‘, autoLoad: true, alias:‘user-store‘, proxy: { type: ‘ajax‘, api: { read: ‘data/users.json‘ }, reader: { type: ‘json‘, rootProperty: ‘users‘, successProperty: ‘success‘ } } });
需要注意事项:
1、文件目录必须按Ext.define的定义的顺序建立,这个是默认约定的,否则找不到文件Js;
2、导航的id值必须是和新建的控件名称的xtype类型对应,否则加载控件失败;
3、ViewController和View绑定,在Js里面requires的内容项,默认会加载相应的Js文件;
4、如果提示,extjs Cannot read property ‘isBufferedStore‘ of undefined,主要原因在于store内容为空导致的;
完整代码如下