好久没用ext了,工作中要用到,想想这次用组件化编程方式吧。因为,之前的写法太垃圾了。个人认为组件化的好处是,相对降低对象的生命周期,其它方面的暂时没考虑到——没好好学过js,就学用框架。当然,回顾还是看别人的代码。一番寻找,找到了dojochina的一个例子。
该实例实现了grid与form间的数据交互,所有数据均为临时存储。代码如下:
/** * 扩展验证 */ Ext.apply(Ext.form.VTypes, { 'age':function(_v){ if(/^\d+$/.test(_v)) { var _age = parseInt(_v); if(_age < 200) return true; } }, 'ageText':'该选项必须输入,例如:24', 'ageMask':/[0-9]/i }); /** * 定义form */ PersonInfoFormPanel = Ext.extend(Ext.form.FormPanel, { constructor: function(){ PersonInfoFormPanel.superclass.constructor.apply(this, [{ baseCls: "x-plain", buttonAlign: "right", labelWidth:30 , defaultType: "textfield", defaults: { anchor: "95%" //labelStyle: "text-align:right"//设定后文本框和标签占据同一区域 }, items: [{ fieldLabel: "姓名", name: "name" }, { fieldLabel: "年龄", name: "age", vtype: "age"//验证年龄(通过vtype类型来验证) }, { xtype: "combo", mode: "local",//本地数据 readOnly: true, fieldLabel: "性别", displayField: "sex",//显示下拉框的内容 triggerAction: "all",//在选择时,显示所有的项 value: "男",//默认值 store: new Ext.data.SimpleStore({ fields: ["sex"], data: [["男"], ["女"]] }), name: "sex"//绑定字段 }] }]) }, //---以下为PersonInfoFormPanel类对外提供的方法--- getValues: function(){ if (this.getForm().isValid()) return new Ext.data.Record(this.getForm().getValues()); else throw new Error("验证没有通过");//自定义异常 }, setValues: function(_r){ this.getForm().loadRecord(_r); }, reset: function(){ this.getForm().reset(); } }); /** * 定义window */ baseWindow = Ext.extend(Ext.Window, { form: null, constructor: function(){ this.form = new PersonInfoFormPanel();//实例化PersonInfoFormPanel类 baseWindow.superclass.constructor.apply(this, [{ modal: true, resizable: false, plain: true, width:350, items:this.form, buttonAlign:'right', closeAction:'hide', bodyStyle:{'padding':'10px 0 10px 10px'}, items: this.form, buttons: [{ text: "确 定", handler:this.onSubmitClick,//提交事件调用 scope: this }, { text: "取 消", handler:this.onCancelClick,//取消事件调用 scope: this }] }]); //给insertWindow对象添加事件(事件冒泡) this.addEvents("submit"); }, //提交事件处理函数 onSubmitClick: function(){ try { //发布事件 this.fireEvent("submit", this, this.form.getValues());//调用PersonInfoFormPanel类中自定义的方法getValues this.close(); } catch (_err) { Ext.Msg.alert("系统提示", _err.description);//扑捉自定义错误或异常 } }, //取消事件处理函数 onCancelClick: function(){ this.close(); }, //重置与隐藏事件处理函数 close: function(){ this.form.reset(); this.hide(); } }); /** * 增加人员窗口 */ insertWindow = Ext.extend(baseWindow, { title: "新增人员" }); /** * 修改人员窗口 */ updateWindow = Ext.extend(baseWindow, { title: "修改人员", load: function(_r){ this.form.setValues(_r); } }); /** * 人员列表 */ PersonListGridPanel = Ext.extend(Ext.grid.GridPanel, { _window: null, _updateWin: null, constructor: function(_url){ this._window = new insertWindow();//insertWindow对象引用 this._updateWin = new updateWindow();//updateWindow对象引用 PersonListGridPanel.superclass.constructor.apply(this, [{ renderTo: Ext.getBody(), width:325 , height:200 , frame: true, autoScroll:true, layout: "form", //工具栏 tbar: [{ text: "添加人员", handler: function(){ this._window.show(); }, scope: this }, "-", { text: "修改人员", handler: function(){ this._updateWin.show(); try { this._updateWin.load(this.getSelected()); } catch (_err) { Ext.Msg.alert("系统提示", _err.description); this._updateWin.close(); } }, scope: this }, "-", { text: "删除", handler: this.onRemovePerson, scope: this }], enableColumnMove: false, //列模板 columns: [{ header: "姓名", menuDisabled: true, dataIndex: "name" }, { header: "年龄", menuDisabled: true, dataIndex: "age" }, { header: "性别", menuDisabled: true, dataIndex: "sex" }], //内存数据 store: new Ext.data.Store({ proxy: new Ext.data.MemoryProxy([['张三','24','男'],['李四','23','女'],['王五','25','男'],['赵六','27','女'],['木易','26','男']]), reader:new Ext.data.ArrayReader({},['name','age','sex']), autoLoad:true }), /*store: new Ext.data.JsonStore({ autoLoad: true, url: _url, fields: ["name", "age", "sex"] }),*/ //选中模板 selModel: new Ext.grid.RowSelectionModel({ singleSelect: true, listeners: { "rowselect": { fn: this.onRowSelected, scope: this } } }) }]); //添加事件 this.addEvents("rowselect"); //事件订阅 this._window.on("submit", this.onInsertWinSubmit, this); this._updateWin.on("submit", this.onUpdateWinSubmit, this); }, //----- 以下为自定义方法--------- //获得选中的记录 getSelected: function(){ var _sm = this.getSelectionModel(); if (_sm.getCount() == 0) throw new Error("你没有选中任何记录,请选择一条记录后重试"); return _sm.getSelected(); }, //插入一条记录 insert: function(_r){ this.getStore().add(_r); }, //更新选中的记录 update: function(_r){ try { var _rs = this.getSelected(); var _data = _rs.data; for (var _i in _data) { _rs.set(_i, _r.get(_i)); }; _rs.commit(); } catch (_err) { } }, //删除选中的记录 remove: function(){ try { var _rs = this.getSelected(); Ext.Msg.confirm("系统提示", "你确定删除吗?", function(_btn){ if (_btn == "yes") this.getStore().remove(_rs); }, this); } catch (_err) { Ext.Msg.alert("系统提示", _err.description); } }, //-------以下为自定义事件处理函数------------ //添加事件 onInsertWinSubmit: function(_win, _r){ this.insert(_r); }, //修改事件 onUpdateWinSubmit: function(_win, _r){ this.update(_r); }, //删除事件 onRemovePerson: function(){ this.remove(); }, //选中事件 onRowSelected: function(_sel, _index, _r){ this.fireEvent("rowselect", _r);//发布事件 } })