ExtJS的使用方法汇总(1)——配置和表格控件使用

xiaoxiao2021-03-01  16

ExtJS时一套AJAX控件,本人认为它是目前我见过最好最美的JS控件库,所以非常有学习和使用价值,如果你还没有接触过ExtJS或者压根对其不感兴趣,那么没有必要看下去了,ExtJS是一套完整的RIA解决方案,也因为功能完整造成了ext-all.js有400多k,由于是基于JS和CSS的功能实现,对客户端机器性能也有一定的要求,即不支持IE6以下的版本。如果您的项目对网页响应时间有严格的限制,或者客户端操作系统过于陈旧,一定不要选择ExtJS。

本文主要是介绍ExtJS的下载和配置以及一些简单的使用方法。目前最新版本为3.0,但是本文主要介绍2.2版本。

一、ExtJS下载以及配置

1、下载地址:www.extjs.com/(这是官网,大家可以选择自己喜欢的版本下载)

2、配置过程,假设下载后的目录为Ext,我们在该目录下建立我们自己的目录MyExample(该目录用于存放你自己写的代码),配置过程如下:

(1) 新建一个页面文件Helloworld.html

(2) 在<head>和</head>之间添加如下代码:

[xhtml] view plain copy print ? <linkrel="stylesheet"type="text/css"href="../resources/css/ext-all.css"/> <scripttype="text/javascript"src="../adapter/ext/ext-base.js"></script> <scripttype="text/javascript"src="../ext-all.js"></script> <scripttype="text/javascript"> Ext.onReady(function(){Ext.MessageBox.alert('HelloWorld','HelloWorld');}) </script> <link rel="stylesheet" type="text/css" href="../resources/css/ext-all.css" /> <script type="text/javascript" src="../adapter/ext/ext-base.js"></script> <script type="text/javascript" src="../ext-all.js"></script> <script type="text/javascript"> Ext.onReady(function(){ Ext.MessageBox.alert('HelloWorld','Hello World'); }) </script>

(3) 这里注意<script></script>不能用</script>取代

(4) js的导入顺序不要更改

(3) 如果弹出一个HelloWorld的对话框,则代表配置成功。

二、表格控件Grid的使用

EXT中的表格功能非常强大,包括排序、缓存、拖动、隐藏某一列、自动显示行号、列汇总、单元格编辑等使用功能。我们首先介绍如何制作一个简单的Grid。

1、创建表格的列信息:

[c-sharp] view plain copy print ? varcm=newExt.grid.ColumnModel([ {header:'编号',dataIndex:'id'}, {header:'名称',dataIndex:'name'}, {header:'描述',dataIndex:'desn'} ]); var cm=new Ext.grid.ColumnModel([ {header:'编号',dataIndex:'id'}, {header:'名称',dataIndex:'name'}, {header:'描述',dataIndex:'desn'} ]);

2、添加数据信息:

[c-sharp] view plain copy print ? vardata=[ ['1','name1','desn1'], ['2','name1','desn1'], ['3','name1','desn1'], ['4','name1','desn1'], ['5','name1','desn1'] ]; var data=[ ['1','name1','desn1'], ['2','name1','desn1'], ['3','name1','desn1'], ['4','name1','desn1'], ['5','name1','desn1'] ];

3、创建数据存储对象:

[c-sharp] view plain copy print ? vards=newExt.data.Store({ proxy:newExt.data.MemoryProxy(data), reader:newExt.data.ArrayReader({},[ {name:'id'}, {name:'name'}, {name:'desn'} ])}); ds.load();//这个相当的重要 var ds=new Ext.data.Store({ proxy:new Ext.data.MemoryProxy(data), reader:new Ext.data.ArrayReader({},[ {name:'id'}, {name:'name'}, {name:'desn'} ]) }); ds.load();//这个相当的重要

4、表格的列模型定义好了,原始数据和数据的转换也已经完成,剩下的只需要把它们装配在一起,我们的Grid就创建成功了。

[c-sharp] view plain copy print ? vargrid=newExt.grid.GridPanel({ renderTo:"grid", store:ds,height:600,cm:cm}); var grid=new Ext.grid.GridPanel({ renderTo:"grid", store: ds, height:600, cm:cm });

5、注意:Ext.grid.Grid的renderTo属性指示EXT将表格渲染到什么地方,所以,在HTML里应该有一个<div id='grid'></div>与之对应。

6、所有代码清单如下(已通过测试):

[c-sharp:collapse] + expand source view plain copy print ? <%@PageLanguage="C#"AutoEventWireup="true"CodeFile="Grid.aspx.cs"Inherits="Ext_example_Grid"%> <!DOCTYPEhtmlPUBLIC"-//W3C//DTDXHTML1.0Transitional//EN""http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <htmlxmlns="http://www.w3.org/1999/xhtml"> <headid="Head1"runat="server"> <title>Grid</title> <linkrel="stylesheet"type="text/css"href="../resources/css/ext-all.css"mce_href="resources/css/ext-all.css"/> <mce:scripttype="text/javascript"src="../adapter/ext/ext-base.js"mce_src="adapter/ext/ext-base.js"></mce:script> <mce:scripttype="text/javascript"src="../ext-all.js"mce_src="ext-all.js"></mce:script> <mce:scripttype="text/javascript"><!-- Ext.onReady(function(){ varcm=newExt.grid.ColumnModel([ {header:'编号',dataIndex:'id'}, {header:'名称',dataIndex:'name'}, {header:'描述',dataIndex:'desn'} ]);vardata=[ ['1','name1','desn1'], ['2','name1','desn1'], ['3','name1','desn1'], ['4','name1','desn1'], ['5','name1','desn1'] ]; vards=newExt.data.Store({ proxy:newExt.data.MemoryProxy(data), reader:newExt.data.ArrayReader({},[ {name:'id'}, {name:'name'}, {name:'desn'} ])});ds.load(); vargrid=newExt.grid.GridPanel({ renderTo:"grid", store:ds,height:600,cm:cm});}); //--></mce:script> </head><body> <formid="form1"runat="server"> <divid="grid"> </div></form></body></html> <%@ Page Language="C#" AutoEventWireup="true" CodeFile="Grid.aspx.cs" Inherits="Ext_example_Grid" %> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml" > <head id="Head1" runat="server"> <title>Grid </title> <link rel="stylesheet" type="text/css" href="../resources/css/ext-all.css" mce_href="resources/css/ext-all.css" /> <mce:script type="text/javascript" src="../adapter/ext/ext-base.js" mce_src="adapter/ext/ext-base.js"></mce:script> <mce:script type="text/javascript" src="../ext-all.js" mce_src="ext-all.js"></mce:script> <mce:script type="text/javascript"><!-- Ext.onReady(function(){ var cm=new Ext.grid.ColumnModel([ {header:'编号',dataIndex:'id'}, {header:'名称',dataIndex:'name'}, {header:'描述',dataIndex:'desn'} ]); var data=[ ['1','name1','desn1'], ['2','name1','desn1'], ['3','name1','desn1'], ['4','name1','desn1'], ['5','name1','desn1'] ]; var ds=new Ext.data.Store({ proxy:new Ext.data.MemoryProxy(data), reader:new Ext.data.ArrayReader({},[ {name:'id'}, {name:'name'}, {name:'desn'} ]) }); ds.load(); var grid=new Ext.grid.GridPanel({ renderTo:"grid", store: ds, height:600, cm:cm }); }); // --></mce:script> </head> <body> <form id="form1" runat="server"> <div id="grid"> </div> </form> </body> </html>

实验效果图如图1所示

图1 一个简单的Grid

三、表格控件Grid的功能详解

第二部分简单介绍了如何创建简单的Grid,本章将对Grid的功能进行详细的分析。

3.1 部分属性功能

1、默认情况下,Grid是可以拖放列,也可以改变列的宽度,如果要禁用这两个功能,在定义Grid对象时分别设置enableColumnMove和enableColumnResize为false即可。

2、如果希望显示斑马线效果,可以加上stripeRows:true

3、Grid还支持一种读取数据时的遮罩和提示功能,设置属性loadMask:true,在store.load()完成之前一直会显示"Loading…"

3.2 自主决定每列的宽度

1、如果要定义宽度,只要设置该列的width属性即可,如下面的代码所示。效果图如图2所示。

[c-sharp] view plain copy print ? varcm=newExt.grid.ColumnModel([ {header:'编号',dataIndex:'id',width:60}, {header:'名称',dataIndex:'name',width:180}, {header:'描述',dataIndex:'desn',width:200} ]); var cm=new Ext.grid.ColumnModel([ {header:'编号',dataIndex:'id',width:60}, {header:'名称',dataIndex:'name',width:180}, {header:'描述',dataIndex:'desn',width:200} ]);

图2 自定义每列的宽度

2、这样需要自己去计算每列的宽度,如果想让每列自动填满Grid,只需要viewConfig中的forceFit即可。使用forceFit后,Grid会根据你在cm里设置的width按比例分配,非常智能。实现代码如下:

[c-sharp] view plain copy print ? vargrid=newExt.grid.GridPanel({ renderTo:"grid", stripeRows:true,//斑马线效果 loadMask:true, store:ds,height:600,cm:cm,viewConfig:{ forceFit:true }}); var grid=new Ext.grid.GridPanel({ renderTo:"grid", stripeRows:true,//斑马线效果 loadMask:true, store: ds, height:600, cm:cm, viewConfig:{ forceFit:true } });

3、我们也可以考虑autoExpandColumn,它可以让指定列的宽度自动伸展,从而填充整个表格。代码如下

[c-sharp] view plain copy print ? vargrid=newExt.grid.GridPanel({ renderTo:"grid", stripeRows:true,//斑马线效果 loadMask:true, store:ds,height:600,cm:cm, autoExpandColumn:'desn' //viewConfig:{ //forceFit:true //} }); var grid=new Ext.grid.GridPanel({ renderTo:"grid", stripeRows:true,//斑马线效果 loadMask:true, store: ds, height:600, cm:cm, autoExpandColumn:'desn' // viewConfig:{ // forceFit:true // } });

注意:autoExpandColum只能指定一列的id,注意,必须是id,原来我们设置的cm里面都没有id,现在为了使用autoExpandColumn,要给cm的desn设置id.于是在渲染时desn就可以自动延伸,否则会出错。

[c-sharp] view plain copy print ? varcm=newExt.grid.ColumnModel([ {header:'编号',dataIndex:'id',width:60}, {header:'名称',dataIndex:'name',width:180}, {id:'desn',header:'描述',dataIndex:'desn',width:200} ]); var cm=new Ext.grid.ColumnModel([ {header:'编号',dataIndex:'id',width:60}, {header:'名称',dataIndex:'name',width:180}, {id:'desn',header:'描述',dataIndex:'desn',width:200} ]);

3.3 让Grid支持按列排序

在EXT中可以很方便地实现排序功能,只需要在定义列模型时增加sortable属性,如下面代码所示:

[c-sharp] view plain copy print ? varcm=newExt.grid.ColumnModel([ {header:'编号',dataIndex:'id',width:60,sortable:true}, {header:'名称',dataIndex:'name',width:180}, {id:'desn',header:'描述',dataIndex:'desn',width:200} ]); var cm=new Ext.grid.ColumnModel([ {header:'编号',dataIndex:'id',width:60,sortable:true}, {header:'名称',dataIndex:'name',width:180}, {id:'desn',header:'描述',dataIndex:'desn',width:200} ]);

效果图如图3所示

图3 按列排序效果

3.4 显示时间类型数据

尽管返回的JSON里都是数字和字符串,但是在EXT中我们同样可以从后台取得日期类型的数据,然后交给Grid进行格式化。

1、首先定义一组数据,其中最后一列是日期格式的数据。

[c-sharp] view plain copy print ? vardata=[ ['1','name1','desn1','2009-09-17T02:58:04'], ['2','name2','desn1','2009-09-17T02:58:04'], ['3','name3','desn1','2009-09-17T02:58:04'], ['4','name4','desn1','2009-09-17T02:58:04'], ['5','name5','desn1','2009-09-17T02:58:04'] ]; var data=[ ['1','name1','desn1','2009-09-17T02:58:04'], ['2','name2','desn1','2009-09-17T02:58:04'], ['3','name3','desn1','2009-09-17T02:58:04'], ['4','name4','desn1','2009-09-17T02:58:04'], ['5','name5','desn1','2009-09-17T02:58:04'] ];

2、接着我们在reader里面增加一行配置,除了设置name以外,还设置了type和dateFormat两个属性。代码如下:

[c-sharp] view plain copy print ? varstore1=newExt.data.Store({ proxy:newExt.data.MemoryProxy(data), reader:newExt.data.ArrayReader({},[ {name:'id'}, {name:'name'}, {name:'desn'}, {name:'date',type:'date',dateFormat:'Y-m-dTH:i:s'} ])}); var store1= new Ext.data.Store({ proxy:new Ext.data.MemoryProxy(data), reader:new Ext.data.ArrayReader({},[ {name:'id'}, {name:'name'}, {name:'desn'}, {name:'date',type:'date',dateFormat:'Y-m-dTH:i:s'} ]) });

3、同样的,我们还需要在cm里面增加一行配置:

[c-sharp] view plain copy print ? varcm=newExt.grid.ColumnModel([ {header:'编号',dataIndex:'id',width:60,sortable:true}, {header:'名称',dataIndex:'name',width:180}, {id:'desn',header:'描述',dataIndex:'desn',width:200}, {header:'时间',dataIndex:'date',type:'date',renderer:Ext.util.Format.dateRenderer('Y年m月d日')} ]); var cm=new Ext.grid.ColumnModel([ {header:'编号',dataIndex:'id',width:60,sortable:true}, {header:'名称',dataIndex:'name',width:180}, {id:'desn',header:'描述',dataIndex:'desn',width:200}, {header:'时间',dataIndex:'date',type:'date',renderer:Ext.util.Format.dateRenderer('Y年m月d日')} ]);

4、代码详细信息如下所示,效果图如图4所示。

[c-sharp:collapse] + expand source view plain copy print ? <htmlxmlns="http://www.w3.org/1999/xhtml"> <headid="Head1"runat="server"> <title>Grid</title> <linkrel="stylesheet"type="text/css"href="../resources/css/ext-all.css"mce_href="resources/css/ext-all.css"/> <mce:scripttype="text/javascript"src="../adapter/ext/ext-base.js"mce_src="adapter/ext/ext-base.js"></mce:script> <mce:scripttype="text/javascript"src="../ext-all.js"mce_src="ext-all.js"></mce:script> <mce:scripttype="text/javascript"><!-- Ext.onReady(function(){ varcm=newExt.grid.ColumnModel([ {header:'编号',dataIndex:'id',width:60,sortable:true}, {header:'名称',dataIndex:'name',width:180}, {id:'desn',header:'描述',dataIndex:'desn',width:200}, {header:'时间',dataIndex:'date',type:'date',renderer:Ext.util.Format.dateRenderer('Y年m月d日')} ]);vardata=[ ['1','name1','desn1','2009-09-17T02:58:04'], ['2','name2','desn1','2009-09-17T02:58:04'], ['3','name3','desn1','2009-09-17T02:58:04'], ['4','name4','desn1','2009-09-17T02:58:04'], ['5','name5','desn1','2009-09-17T02:58:04'] ]; varstore1=newExt.data.Store({ proxy:newExt.data.MemoryProxy(data), reader:newExt.data.ArrayReader({},[ {name:'id'}, {name:'name'}, {name:'desn'}, {name:'date',type:'date',dateFormat:'Y-m-dTH:i:s'} ])});store1.load(); vargrid1=newExt.grid.GridPanel({ renderTo:"grid1", stripeRows:true,//斑马线效果 loadMask:true, store:store1,height:200,cm:cm,viewConfig:{ forceFit:true }});}); //--></mce:script> </head><body> <formid="form1"runat="server"> <divid="grid1"> </div></form></body></html> <html xmlns="http://www.w3.org/1999/xhtml" > <head id="Head1" runat="server"> <title>Grid </title> <link rel="stylesheet" type="text/css" href="../resources/css/ext-all.css" mce_href="resources/css/ext-all.css" /> <mce:script type="text/javascript" src="../adapter/ext/ext-base.js" mce_src="adapter/ext/ext-base.js"></mce:script> <mce:script type="text/javascript" src="../ext-all.js" mce_src="ext-all.js"></mce:script> <mce:script type="text/javascript"><!-- Ext.onReady(function(){ var cm=new Ext.grid.ColumnModel([ {header:'编号',dataIndex:'id',width:60,sortable:true}, {header:'名称',dataIndex:'name',width:180}, {id:'desn',header:'描述',dataIndex:'desn',width:200}, {header:'时间',dataIndex:'date',type:'date',renderer:Ext.util.Format.dateRenderer('Y年m月d日')} ]); var data=[ ['1','name1','desn1','2009-09-17T02:58:04'], ['2','name2','desn1','2009-09-17T02:58:04'], ['3','name3','desn1','2009-09-17T02:58:04'], ['4','name4','desn1','2009-09-17T02:58:04'], ['5','name5','desn1','2009-09-17T02:58:04'] ]; var store1= new Ext.data.Store({ proxy:new Ext.data.MemoryProxy(data), reader:new Ext.data.ArrayReader({},[ {name:'id'}, {name:'name'}, {name:'desn'}, {name:'date',type:'date',dateFormat:'Y-m-dTH:i:s'} ]) }); store1.load(); var grid1=new Ext.grid.GridPanel({ renderTo:"grid1", stripeRows:true,//斑马线效果 loadMask:true, store: store1, height:200, cm:cm, viewConfig:{ forceFit:true } }); }); // --></mce:script> </head> <body> <form id="form1" runat="server"> <div id="grid1"> </div> </form> </body> </html>

图4 具有时间数据的Grid

3.5 自动显示行号和复选框

实际上,行号和复选框都是renderer的延伸。当然,复选框的功能要复杂得多。

1、自动显示行号:修改列模型cm,加入RowNumberer对象;

2、复选框:我们创建一个CheckboxSelectionModel()

3、详细代码如下,效果图如图5所示

[c-sharp] view plain copy print ? varsm=newExt.grid.CheckboxSelectionModel(); varcm=newExt.grid.ColumnModel([ newExt.grid.RowNumberer(), sm, {header:'编号',dataIndex:'id',width:40,sortable:true}, {header:'名称',dataIndex:'name',width:180}, {id:'desn',header:'描述',dataIndex:'desn',width:200}, {header:'时间',dataIndex:'date',type:'date',renderer:Ext.util.Format.dateRenderer('Y年m月d日')} ]); var sm=new Ext.grid.CheckboxSelectionModel(); var cm=new Ext.grid.ColumnModel([ new Ext.grid.RowNumberer(), sm, {header:'编号',dataIndex:'id',width:40,sortable:true}, {header:'名称',dataIndex:'name',width:180}, {id:'desn',header:'描述',dataIndex:'desn',width:200}, {header:'时间',dataIndex:'date',type:'date',renderer:Ext.util.Format.dateRenderer('Y年m月d日')} ]);

图5 自动行号以及复选框效果图

3.6 表格分页

Grid控件对性能要求较高,如果在一个Grid里面显示上千条记录,效率会有明显下降,所以必须考虑分页问题。

1、为Grid添加分页工具条:在前面代码的基础上修改grid代码:

[c-sharp] view plain copy print ? vargrid1=newExt.grid.GridPanel({ renderTo:"grid1", stripeRows:true,//斑马线效果 loadMask:true, store:store1,height:200,cm:cm,viewConfig:{ forceFit:true }, bbar:newExt.PagingToolbar({ pageSize:10,store:store1, displayInfo:true, displayMsg:'显示第{0}条到{1}条记录,一共{2}条', emptyMsg:"没有记录" })}); var grid1=new Ext.grid.GridPanel({ renderTo:"grid1", stripeRows:true,//斑马线效果 loadMask:true, store: store1, height:200, cm:cm, viewConfig:{ forceFit:true }, bbar:new Ext.PagingToolbar({ pageSize:10, store: store1, displayInfo:true, displayMsg:'显示第{0}条到{1}条记录,一共{2}条', emptyMsg:"没有记录" }) });

2、效果图如图6所示:

图6 添加分页工具条

3、如果要真正实现分页,还需要通过后台脚本获得分页数据,这部分在此不再给出

四、可编辑表格控件——EditorGrid

EditorGrid可以直接在表格里面执行添加、删除、修改、查找等功能,然后一次性保持。还有可以动态修改某个单元格,这些单元格我们先暂时不能为空,保存时会进行检测,为空就无法保存,验证信息会给予提示。

4.1 制作一个简单的EditorGrid

1、定义列,代码如下:

[c-sharp] view plain copy print ? varcm=newExt.grid.ColumnModel([ {header:'编号',dataIndex:'id',width:40,editor:newExt.grid.GridEditor( newExt.form.TextField({ allowBlank:false }))}, {header:'名称',dataIndex:'name',width:180,editor:newExt.grid.GridEditor( newExt.form.TextField({ allowBlank:false }))}, {id:'desn',header:'描述',dataIndex:'desn',width:200}, {header:'时间',dataIndex:'date',type:'date',renderer:Ext.util.Format.dateRenderer('Y年m月d日')} ]); var cm=new Ext.grid.ColumnModel([ {header:'编号',dataIndex:'id',width:40,editor:new Ext.grid.GridEditor( new Ext.form.TextField({ allowBlank:false }) )}, {header:'名称',dataIndex:'name',width:180,editor:new Ext.grid.GridEditor( new Ext.form.TextField({ allowBlank:false }) )}, {id:'desn',header:'描述',dataIndex:'desn',width:200}, {header:'时间',dataIndex:'date',type:'date',renderer:Ext.util.Format.dateRenderer('Y年m月d日')} ]);

2、定义grid,注意此时是EditorGridPanel.

[c-sharp] view plain copy print ? vargrid1=newExt.grid.EditorGridPanel({ renderTo:"grid1", store:store1,height:200,clicksToEdit:1,cm:cm}); var grid1=new Ext.grid.EditorGridPanel({ renderTo:"grid1", store: store1, height:200, clicksToEdit:1, cm:cm });

3、默认情况下,需要双击单元格才能激活编辑器,从而进行修改,不过,也可以给Grid配置clickToEdit:1,这样就可以单击单元格激活编辑器,从而进行修改,如图7所示:

图7 通过单击修改单元格

五、属性表格——PropertyGrid

属性表格扩展自EditorGridPanel,所以可以直接编辑右边的内容,注意:只有右边的,即使你单击左边的单元格,编辑器也会出现在右边。

定义的方法如下:

[c-sharp] view plain copy print ? <mce:scripttype="text/javascript"><!--Ext.onReady(function(){ vargrid=newExt.grid.PropertyGrid({ title:"属性表格", autoHeight:true, width:400, renderTo:'grid1', source:{ "名字":"薛敬明", "创建时间":newDate(Date.parse('12/15/2009')), "是否有效":false, "版本号":.01, "描述":"估计没有啥说的" }});}); //--></mce:script> <mce:script type="text/javascript"><!-- Ext.onReady(function(){ var grid=new Ext.grid.PropertyGrid({ title:"属性表格", autoHeight:true, width:400, renderTo:'grid1', source:{ "名字":"薛敬明", "创建时间":new Date(Date.parse('12/15/2009')), "是否有效":false, "版本号":.01, "描述":"估计没有啥说的" } }); }); // --></mce:script>

效果图如图8所示:

图8 属性表格效果图

六、分组表格——Group

分组表格就是在普通表格的基础上,根据某一列的数据将表格中的数据分组显示的表格控件。

1、首先定义一组数据

[c-sharp] view plain copy print ? vardata=[ ['1','male','name1','desn1'], ['2','male','name2','desn1'], ['3','female','name3','desn1'], ['4','male','name4','desn1'], ['5','female','name5','desn1'], ['6','male','name6','desn1'], ['7','male','name7','desn1'] ]; var data=[ ['1','male','name1','desn1'], ['2','male','name2','desn1'], ['3','female','name3','desn1'], ['4','male','name4','desn1'], ['5','female','name5','desn1'], ['6','male','name6','desn1'], ['7','male','name7','desn1'] ];

2、创建表格的列信息

[c-sharp] view plain copy print ? varsm=newExt.grid.CheckboxSelectionModel(); varcm=newExt.grid.ColumnModel([ newExt.grid.RowNumberer(), sm, {header:'编号',dataIndex:'id',width:40,sortable:true}, {header:'性别',dataIndex:'sex',width:180}, {header:'名称',dataIndex:'name',width:200}, {header:'描述',dataIndex:'desn',width:200} ]); var sm=new Ext.grid.CheckboxSelectionModel(); var cm=new Ext.grid.ColumnModel([ new Ext.grid.RowNumberer(), sm, {header:'编号',dataIndex:'id',width:40,sortable:true}, {header:'性别',dataIndex:'sex',width:180}, {header:'名称',dataIndex:'name',width:200}, {header:'描述',dataIndex:'desn',width:200} ]);

3、创建数据存储对象

[c-sharp] view plain copy print ? varstore1=newExt.data.GroupingStore({ proxy:newExt.data.MemoryProxy(data), reader:newExt.data.ArrayReader({},[ {name:'id'}, {name:'sex'}, {name:'name'}, {name:'desn'} ]), groupField:'sex', sortInfo:{field:'id',direction:"ASC"} });store1.load(); var store1= new Ext.data.GroupingStore({ proxy:new Ext.data.MemoryProxy(data), reader:new Ext.data.ArrayReader({},[ {name:'id'}, {name:'sex'}, {name:'name'}, {name:'desn'} ]), groupField:'sex', sortInfo:{field:'id',direction:"ASC"} }); store1.load();

4、设计分组设计表格

[c-sharp] view plain copy print ? vargrid1=newExt.grid.GridPanel({store:store1,height:300,cm:cm, view:newExt.grid.GroupingView(), renderTo:"grid1" }); var grid1=new Ext.grid.GridPanel({ store: store1, height:300, cm:cm, view:new Ext.grid.GroupingView(), renderTo:"grid1" });

5、代码清单如下,效果图如图9所示。

[c-sharp:collapse] + expand source view plain copy print ? <htmlxmlns="http://www.w3.org/1999/xhtml"> <headid="Head1"runat="server"> <title>分组表格控件</title> <linkrel="stylesheet"type="text/css"href="../resources/css/ext-all.css"mce_href="resources/css/ext-all.css"/> <mce:scripttype="text/javascript"src="../adapter/ext/ext-base.js"mce_src="adapter/ext/ext-base.js"></mce:script> <mce:scripttype="text/javascript"src="../ext-all.js"mce_src="ext-all.js"></mce:script> <mce:scripttype="text/javascript"><!-- Ext.onReady(function(){ varsm=newExt.grid.CheckboxSelectionModel(); varcm=newExt.grid.ColumnModel([ newExt.grid.RowNumberer(), sm, {header:'编号',dataIndex:'id',width:40,sortable:true}, {header:'性别',dataIndex:'sex',width:180}, {header:'名称',dataIndex:'name',width:200}, {header:'描述',dataIndex:'desn',width:200} ]);vardata=[ ['1','male','name1','desn1'], ['2','male','name2','desn1'], ['3','female','name3','desn1'], ['4','male','name4','desn1'], ['5','female','name5','desn1'], ['6','male','name6','desn1'], ['7','male','name7','desn1'] ]; varstore1=newExt.data.GroupingStore({ proxy:newExt.data.MemoryProxy(data), reader:newExt.data.ArrayReader({},[ {name:'id'}, {name:'sex'}, {name:'name'}, {name:'desn'} ]), groupField:'sex', sortInfo:{field:'id',direction:"ASC"} });store1.load(); vargrid1=newExt.grid.GridPanel({ store:store1,height:300,cm:cm, view:newExt.grid.GroupingView(), renderTo:"grid1" });}); //--></mce:script> </head><body> <formid="form1"runat="server"> <divid="grid1"> </div></form></body></html> <html xmlns="http://www.w3.org/1999/xhtml" > <head id="Head1" runat="server"> <title>分组表格控件</title> <link rel="stylesheet" type="text/css" href="../resources/css/ext-all.css" mce_href="resources/css/ext-all.css" /> <mce:script type="text/javascript" src="../adapter/ext/ext-base.js" mce_src="adapter/ext/ext-base.js"></mce:script> <mce:script type="text/javascript" src="../ext-all.js" mce_src="ext-all.js"></mce:script> <mce:script type="text/javascript"><!-- Ext.onReady(function(){ var sm=new Ext.grid.CheckboxSelectionModel(); var cm=new Ext.grid.ColumnModel([ new Ext.grid.RowNumberer(), sm, {header:'编号',dataIndex:'id',width:40,sortable:true}, {header:'性别',dataIndex:'sex',width:180}, {header:'名称',dataIndex:'name',width:200}, {header:'描述',dataIndex:'desn',width:200} ]); var data=[ ['1','male','name1','desn1'], ['2','male','name2','desn1'], ['3','female','name3','desn1'], ['4','male','name4','desn1'], ['5','female','name5','desn1'], ['6','male','name6','desn1'], ['7','male','name7','desn1'] ]; var store1= new Ext.data.GroupingStore({ proxy:new Ext.data.MemoryProxy(data), reader:new Ext.data.ArrayReader({},[ {name:'id'}, {name:'sex'}, {name:'name'}, {name:'desn'} ]), groupField:'sex', sortInfo:{field:'id',direction:"ASC"} }); store1.load(); var grid1=new Ext.grid.GridPanel({ store: store1, height:300, cm:cm, view:new Ext.grid.GroupingView(), renderTo:"grid1" }); }); // --></mce:script> </head> <body> <form id="form1" runat="server"> <div id="grid1"> </div> </form> </body> </html>

图9 分组表格

六、可拖放的表格

首先我们看图10的效果图:

图10 可拖放的表格

注意图10四周的蓝色细条,把鼠标放到上面,就可以用拖放改变表格的高度和宽度,实现这一效果并不难,也不需要对写好的Grid做大的修改,只要在原先的基础上添加如下代码:

[c-sharp] view plain copy print ? varrz=newExt.Resizable('grid1',{ wrap:true, minHeight:100, pinned:true, handles:'all' }); rz.on('resize',grid1.syncSize,grid1); var rz=new Ext.Resizable('grid1',{ wrap:true, minHeight:100, pinned:true, handles:'all' }); rz.on('resize',grid1.syncSize,grid1);

注意:

(1) Resizable必须放在render之后,否则就会出现问题;

(2) handles:'all'代表可以向所有放心拖动表格

七、Grid与右键菜单

Grid提供了四个与右键菜单相关的事件:

(1)contextmenu:全局性的右键事件;

(2)cellcontextmenu:单元格上的右键事件

(3)rowcontextmenu:行上的右键事件

(4)headercontextmenu:表头的右键事件

以下代码我们实现一个行上的右键事件,代码清单如下,效果图如11所示

[c-sharp] view plain copy print ? varcontextmenu=newExt.menu.Menu({ id:'theContextMenu', items:[{ text:'查看详情', handler:function(){}}]}); grid1.on("rowcontextmenu",function(grid,rowIndex,e){ e.preventDefault();grid1.getSelectionModel().selectRow(rowIndex);contextmenu.showAt(e.getXY());}); var contextmenu=new Ext.menu.Menu({ id:'theContextMenu', items:[{ text:'查看详情', handler:function(){ } }] }); grid1.on("rowcontextmenu",function(grid,rowIndex,e){ e.preventDefault(); grid1.getSelectionModel().selectRow(rowIndex); contextmenu.showAt(e.getXY()); });

图11 右键菜单

ExtJS时一套AJAX控件,本人认为它是目前我见过最好最美的JS控件库,所以非常有学习和使用价值,如果你还没有接触过ExtJS或者压根对其不感兴趣,那么没有必要看下去了,ExtJS是一套完整的RIA解决方案,也因为功能完整造成了ext-all.js有400多k,由于是基于JS和CSS的功能实现,对客户端机器性能也有一定的要求,即不支持IE6以下的版本。如果您的项目对网页响应时间有严格的限制,或者客户端操作系统过于陈旧,一定不要选择ExtJS。

本文主要是介绍ExtJS的下载和配置以及一些简单的使用方法。目前最新版本为3.0,但是本文主要介绍2.2版本。

一、ExtJS下载以及配置

1、下载地址:www.extjs.com/(这是官网,大家可以选择自己喜欢的版本下载)

2、配置过程,假设下载后的目录为Ext,我们在该目录下建立我们自己的目录MyExample(该目录用于存放你自己写的代码),配置过程如下:

(1) 新建一个页面文件Helloworld.html

(2) 在<head>和</head>之间添加如下代码:

[xhtml] view plain copy print ? <linkrel="stylesheet"type="text/css"href="../resources/css/ext-all.css"/> <scripttype="text/javascript"src="../adapter/ext/ext-base.js"></script> <scripttype="text/javascript"src="../ext-all.js"></script> <scripttype="text/javascript"> Ext.onReady(function(){Ext.MessageBox.alert('HelloWorld','HelloWorld');}) </script> <link rel="stylesheet" type="text/css" href="../resources/css/ext-all.css" /> <script type="text/javascript" src="../adapter/ext/ext-base.js"></script> <script type="text/javascript" src="../ext-all.js"></script> <script type="text/javascript"> Ext.onReady(function(){ Ext.MessageBox.alert('HelloWorld','Hello World'); }) </script>

(3) 这里注意<script></script>不能用</script>取代

(4) js的导入顺序不要更改

(3) 如果弹出一个HelloWorld的对话框,则代表配置成功。

二、表格控件Grid的使用

EXT中的表格功能非常强大,包括排序、缓存、拖动、隐藏某一列、自动显示行号、列汇总、单元格编辑等使用功能。我们首先介绍如何制作一个简单的Grid。

1、创建表格的列信息:

[c-sharp] view plain copy print ? varcm=newExt.grid.ColumnModel([ {header:'编号',dataIndex:'id'}, {header:'名称',dataIndex:'name'}, {header:'描述',dataIndex:'desn'} ]); var cm=new Ext.grid.ColumnModel([ {header:'编号',dataIndex:'id'}, {header:'名称',dataIndex:'name'}, {header:'描述',dataIndex:'desn'} ]);

2、添加数据信息:

[c-sharp] view plain copy print ? vardata=[ ['1','name1','desn1'], ['2','name1','desn1'], ['3','name1','desn1'], ['4','name1','desn1'], ['5','name1','desn1'] ]; var data=[ ['1','name1','desn1'], ['2','name1','desn1'], ['3','name1','desn1'], ['4','name1','desn1'], ['5','name1','desn1'] ];

3、创建数据存储对象:

[c-sharp] view plain copy print ? vards=newExt.data.Store({ proxy:newExt.data.MemoryProxy(data), reader:newExt.data.ArrayReader({},[ {name:'id'}, {name:'name'}, {name:'desn'} ])}); ds.load();//这个相当的重要 var ds=new Ext.data.Store({ proxy:new Ext.data.MemoryProxy(data), reader:new Ext.data.ArrayReader({},[ {name:'id'}, {name:'name'}, {name:'desn'} ]) }); ds.load();//这个相当的重要

4、表格的列模型定义好了,原始数据和数据的转换也已经完成,剩下的只需要把它们装配在一起,我们的Grid就创建成功了。

[c-sharp] view plain copy print ? vargrid=newExt.grid.GridPanel({ renderTo:"grid", store:ds,height:600,cm:cm}); var grid=new Ext.grid.GridPanel({ renderTo:"grid", store: ds, height:600, cm:cm });

5、注意:Ext.grid.Grid的renderTo属性指示EXT将表格渲染到什么地方,所以,在HTML里应该有一个<div id='grid'></div>与之对应。

6、所有代码清单如下(已通过测试):

[c-sharp:collapse] + expand source view plain copy print ? <%@PageLanguage="C#"AutoEventWireup="true"CodeFile="Grid.aspx.cs"Inherits="Ext_example_Grid"%> <!DOCTYPEhtmlPUBLIC"-//W3C//DTDXHTML1.0Transitional//EN""http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <htmlxmlns="http://www.w3.org/1999/xhtml"> <headid="Head1"runat="server"> <title>Grid</title> <linkrel="stylesheet"type="text/css"href="../resources/css/ext-all.css"mce_href="resources/css/ext-all.css"/> <mce:scripttype="text/javascript"src="../adapter/ext/ext-base.js"mce_src="adapter/ext/ext-base.js"></mce:script> <mce:scripttype="text/javascript"src="../ext-all.js"mce_src="ext-all.js"></mce:script> <mce:scripttype="text/javascript"><!-- Ext.onReady(function(){ varcm=newExt.grid.ColumnModel([ {header:'编号',dataIndex:'id'}, {header:'名称',dataIndex:'name'}, {header:'描述',dataIndex:'desn'} ]);vardata=[ ['1','name1','desn1'], ['2','name1','desn1'], ['3','name1','desn1'], ['4','name1','desn1'], ['5','name1','desn1'] ]; vards=newExt.data.Store({ proxy:newExt.data.MemoryProxy(data), reader:newExt.data.ArrayReader({},[ {name:'id'}, {name:'name'}, {name:'desn'} ])});ds.load(); vargrid=newExt.grid.GridPanel({ renderTo:"grid", store:ds,height:600,cm:cm});}); //--></mce:script> </head><body> <formid="form1"runat="server"> <divid="grid"> </div></form></body></html> <%@ Page Language="C#" AutoEventWireup="true" CodeFile="Grid.aspx.cs" Inherits="Ext_example_Grid" %> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml" > <head id="Head1" runat="server"> <title>Grid </title> <link rel="stylesheet" type="text/css" href="../resources/css/ext-all.css" mce_href="resources/css/ext-all.css" /> <mce:script type="text/javascript" src="../adapter/ext/ext-base.js" mce_src="adapter/ext/ext-base.js"></mce:script> <mce:script type="text/javascript" src="../ext-all.js" mce_src="ext-all.js"></mce:script> <mce:script type="text/javascript"><!-- Ext.onReady(function(){ var cm=new Ext.grid.ColumnModel([ {header:'编号',dataIndex:'id'}, {header:'名称',dataIndex:'name'}, {header:'描述',dataIndex:'desn'} ]); var data=[ ['1','name1','desn1'], ['2','name1','desn1'], ['3','name1','desn1'], ['4','name1','desn1'], ['5','name1','desn1'] ]; var ds=new Ext.data.Store({ proxy:new Ext.data.MemoryProxy(data), reader:new Ext.data.ArrayReader({},[ {name:'id'}, {name:'name'}, {name:'desn'} ]) }); ds.load(); var grid=new Ext.grid.GridPanel({ renderTo:"grid", store: ds, height:600, cm:cm }); }); // --></mce:script> </head> <body> <form id="form1" runat="server"> <div id="grid"> </div> </form> </body> </html>

实验效果图如图1所示

图1 一个简单的Grid

三、表格控件Grid的功能详解

第二部分简单介绍了如何创建简单的Grid,本章将对Grid的功能进行详细的分析。

3.1 部分属性功能

1、默认情况下,Grid是可以拖放列,也可以改变列的宽度,如果要禁用这两个功能,在定义Grid对象时分别设置enableColumnMove和enableColumnResize为false即可。

2、如果希望显示斑马线效果,可以加上stripeRows:true

3、Grid还支持一种读取数据时的遮罩和提示功能,设置属性loadMask:true,在store.load()完成之前一直会显示"Loading…"

3.2 自主决定每列的宽度

1、如果要定义宽度,只要设置该列的width属性即可,如下面的代码所示。效果图如图2所示。

[c-sharp] view plain copy print ? varcm=newExt.grid.ColumnModel([ {header:'编号',dataIndex:'id',width:60}, {header:'名称',dataIndex:'name',width:180}, {header:'描述',dataIndex:'desn',width:200} ]); var cm=new Ext.grid.ColumnModel([ {header:'编号',dataIndex:'id',width:60}, {header:'名称',dataIndex:'name',width:180}, {header:'描述',dataIndex:'desn',width:200} ]);

图2 自定义每列的宽度

2、这样需要自己去计算每列的宽度,如果想让每列自动填满Grid,只需要viewConfig中的forceFit即可。使用forceFit后,Grid会根据你在cm里设置的width按比例分配,非常智能。实现代码如下:

[c-sharp] view plain copy print ? vargrid=newExt.grid.GridPanel({ renderTo:"grid", stripeRows:true,//斑马线效果 loadMask:true, store:ds,height:600,cm:cm,viewConfig:{ forceFit:true }}); var grid=new Ext.grid.GridPanel({ renderTo:"grid", stripeRows:true,//斑马线效果 loadMask:true, store: ds, height:600, cm:cm, viewConfig:{ forceFit:true } });

3、我们也可以考虑autoExpandColumn,它可以让指定列的宽度自动伸展,从而填充整个表格。代码如下

[c-sharp] view plain copy print ? vargrid=newExt.grid.GridPanel({ renderTo:"grid", stripeRows:true,//斑马线效果 loadMask:true, store:ds,height:600,cm:cm, autoExpandColumn:'desn' //viewConfig:{ //forceFit:true //} }); var grid=new Ext.grid.GridPanel({ renderTo:"grid", stripeRows:true,//斑马线效果 loadMask:true, store: ds, height:600, cm:cm, autoExpandColumn:'desn' // viewConfig:{ // forceFit:true // } });

注意:autoExpandColum只能指定一列的id,注意,必须是id,原来我们设置的cm里面都没有id,现在为了使用autoExpandColumn,要给cm的desn设置id.于是在渲染时desn就可以自动延伸,否则会出错。

[c-sharp] view plain copy print ? varcm=newExt.grid.ColumnModel([ {header:'编号',dataIndex:'id',width:60}, {header:'名称',dataIndex:'name',width:180}, {id:'desn',header:'描述',dataIndex:'desn',width:200} ]); var cm=new Ext.grid.ColumnModel([ {header:'编号',dataIndex:'id',width:60}, {header:'名称',dataIndex:'name',width:180}, {id:'desn',header:'描述',dataIndex:'desn',width:200} ]);

3.3 让Grid支持按列排序

在EXT中可以很方便地实现排序功能,只需要在定义列模型时增加sortable属性,如下面代码所示:

[c-sharp] view plain copy print ? varcm=newExt.grid.ColumnModel([ {header:'编号',dataIndex:'id',width:60,sortable:true}, {header:'名称',dataIndex:'name',width:180}, {id:'desn',header:'描述',dataIndex:'desn',width:200} ]); var cm=new Ext.grid.ColumnModel([ {header:'编号',dataIndex:'id',width:60,sortable:true}, {header:'名称',dataIndex:'name',width:180}, {id:'desn',header:'描述',dataIndex:'desn',width:200} ]);

效果图如图3所示

图3 按列排序效果

3.4 显示时间类型数据

尽管返回的JSON里都是数字和字符串,但是在EXT中我们同样可以从后台取得日期类型的数据,然后交给Grid进行格式化。

1、首先定义一组数据,其中最后一列是日期格式的数据。

[c-sharp] view plain copy print ? vardata=[ ['1','name1','desn1','2009-09-17T02:58:04'], ['2','name2','desn1','2009-09-17T02:58:04'], ['3','name3','desn1','2009-09-17T02:58:04'], ['4','name4','desn1','2009-09-17T02:58:04'], ['5','name5','desn1','2009-09-17T02:58:04'] ]; var data=[ ['1','name1','desn1','2009-09-17T02:58:04'], ['2','name2','desn1','2009-09-17T02:58:04'], ['3','name3','desn1','2009-09-17T02:58:04'], ['4','name4','desn1','2009-09-17T02:58:04'], ['5','name5','desn1','2009-09-17T02:58:04'] ];

2、接着我们在reader里面增加一行配置,除了设置name以外,还设置了type和dateFormat两个属性。代码如下:

[c-sharp] view plain copy print ? varstore1=newExt.data.Store({ proxy:newExt.data.MemoryProxy(data), reader:newExt.data.ArrayReader({},[ {name:'id'}, {name:'name'}, {name:'desn'}, {name:'date',type:'date',dateFormat:'Y-m-dTH:i:s'} ])}); var store1= new Ext.data.Store({ proxy:new Ext.data.MemoryProxy(data), reader:new Ext.data.ArrayReader({},[ {name:'id'}, {name:'name'}, {name:'desn'}, {name:'date',type:'date',dateFormat:'Y-m-dTH:i:s'} ]) });

3、同样的,我们还需要在cm里面增加一行配置:

[c-sharp] view plain copy print ? varcm=newExt.grid.ColumnModel([ {header:'编号',dataIndex:'id',width:60,sortable:true}, {header:'名称',dataIndex:'name',width:180}, {id:'desn',header:'描述',dataIndex:'desn',width:200}, {header:'时间',dataIndex:'date',type:'date',renderer:Ext.util.Format.dateRenderer('Y年m月d日')} ]); var cm=new Ext.grid.ColumnModel([ {header:'编号',dataIndex:'id',width:60,sortable:true}, {header:'名称',dataIndex:'name',width:180}, {id:'desn',header:'描述',dataIndex:'desn',width:200}, {header:'时间',dataIndex:'date',type:'date',renderer:Ext.util.Format.dateRenderer('Y年m月d日')} ]);

4、代码详细信息如下所示,效果图如图4所示。

[c-sharp:collapse] + expand source view plain copy print ? <htmlxmlns="http://www.w3.org/1999/xhtml"> <headid="Head1"runat="server"> <title>Grid</title> <linkrel="stylesheet"type="text/css"href="../resources/css/ext-all.css"mce_href="resources/css/ext-all.css"/> <mce:scripttype="text/javascript"src="../adapter/ext/ext-base.js"mce_src="adapter/ext/ext-base.js"></mce:script> <mce:scripttype="text/javascript"src="../ext-all.js"mce_src="ext-all.js"></mce:script> <mce:scripttype="text/javascript"><!-- Ext.onReady(function(){ varcm=newExt.grid.ColumnModel([ {header:'编号',dataIndex:'id',width:60,sortable:true}, {header:'名称',dataIndex:'name',width:180}, {id:'desn',header:'描述',dataIndex:'desn',width:200}, {header:'时间',dataIndex:'date',type:'date',renderer:Ext.util.Format.dateRenderer('Y年m月d日')} ]);vardata=[ ['1','name1','desn1','2009-09-17T02:58:04'], ['2','name2','desn1','2009-09-17T02:58:04'], ['3','name3','desn1','2009-09-17T02:58:04'], ['4','name4','desn1','2009-09-17T02:58:04'], ['5','name5','desn1','2009-09-17T02:58:04'] ]; varstore1=newExt.data.Store({ proxy:newExt.data.MemoryProxy(data), reader:newExt.data.ArrayReader({},[ {name:'id'}, {name:'name'}, {name:'desn'}, {name:'date',type:'date',dateFormat:'Y-m-dTH:i:s'} ])});store1.load(); vargrid1=newExt.grid.GridPanel({ renderTo:"grid1", stripeRows:true,//斑马线效果 loadMask:true, store:store1,height:200,cm:cm,viewConfig:{ forceFit:true }});}); //--></mce:script> </head><body> <formid="form1"runat="server"> <divid="grid1"> </div></form></body></html> <html xmlns="http://www.w3.org/1999/xhtml" > <head id="Head1" runat="server"> <title>Grid </title> <link rel="stylesheet" type="text/css" href="../resources/css/ext-all.css" mce_href="resources/css/ext-all.css" /> <mce:script type="text/javascript" src="../adapter/ext/ext-base.js" mce_src="adapter/ext/ext-base.js"></mce:script> <mce:script type="text/javascript" src="../ext-all.js" mce_src="ext-all.js"></mce:script> <mce:script type="text/javascript"><!-- Ext.onReady(function(){ var cm=new Ext.grid.ColumnModel([ {header:'编号',dataIndex:'id',width:60,sortable:true}, {header:'名称',dataIndex:'name',width:180}, {id:'desn',header:'描述',dataIndex:'desn',width:200}, {header:'时间',dataIndex:'date',type:'date',renderer:Ext.util.Format.dateRenderer('Y年m月d日')} ]); var data=[ ['1','name1','desn1','2009-09-17T02:58:04'], ['2','name2','desn1','2009-09-17T02:58:04'], ['3','name3','desn1','2009-09-17T02:58:04'], ['4','name4','desn1','2009-09-17T02:58:04'], ['5','name5','desn1','2009-09-17T02:58:04'] ]; var store1= new Ext.data.Store({ proxy:new Ext.data.MemoryProxy(data), reader:new Ext.data.ArrayReader({},[ {name:'id'}, {name:'name'}, {name:'desn'}, {name:'date',type:'date',dateFormat:'Y-m-dTH:i:s'} ]) }); store1.load(); var grid1=new Ext.grid.GridPanel({ renderTo:"grid1", stripeRows:true,//斑马线效果 loadMask:true, store: store1, height:200, cm:cm, viewConfig:{ forceFit:true } }); }); // --></mce:script> </head> <body> <form id="form1" runat="server"> <div id="grid1"> </div> </form> </body> </html>

图4 具有时间数据的Grid

3.5 自动显示行号和复选框

实际上,行号和复选框都是renderer的延伸。当然,复选框的功能要复杂得多。

1、自动显示行号:修改列模型cm,加入RowNumberer对象;

2、复选框:我们创建一个CheckboxSelectionModel()

3、详细代码如下,效果图如图5所示

[c-sharp] view plain copy print ? varsm=newExt.grid.CheckboxSelectionModel(); varcm=newExt.grid.ColumnModel([ newExt.grid.RowNumberer(), sm, {header:'编号',dataIndex:'id',width:40,sortable:true}, {header:'名称',dataIndex:'name',width:180}, {id:'desn',header:'描述',dataIndex:'desn',width:200}, {header:'时间',dataIndex:'date',type:'date',renderer:Ext.util.Format.dateRenderer('Y年m月d日')} ]); var sm=new Ext.grid.CheckboxSelectionModel(); var cm=new Ext.grid.ColumnModel([ new Ext.grid.RowNumberer(), sm, {header:'编号',dataIndex:'id',width:40,sortable:true}, {header:'名称',dataIndex:'name',width:180}, {id:'desn',header:'描述',dataIndex:'desn',width:200}, {header:'时间',dataIndex:'date',type:'date',renderer:Ext.util.Format.dateRenderer('Y年m月d日')} ]);

图5 自动行号以及复选框效果图

3.6 表格分页

Grid控件对性能要求较高,如果在一个Grid里面显示上千条记录,效率会有明显下降,所以必须考虑分页问题。

1、为Grid添加分页工具条:在前面代码的基础上修改grid代码:

[c-sharp] view plain copy print ? vargrid1=newExt.grid.GridPanel({ renderTo:"grid1", stripeRows:true,//斑马线效果 loadMask:true, store:store1,height:200,cm:cm,viewConfig:{ forceFit:true }, bbar:newExt.PagingToolbar({ pageSize:10,store:store1, displayInfo:true, displayMsg:'显示第{0}条到{1}条记录,一共{2}条', emptyMsg:"没有记录" })}); var grid1=new Ext.grid.GridPanel({ renderTo:"grid1", stripeRows:true,//斑马线效果 loadMask:true, store: store1, height:200, cm:cm, viewConfig:{ forceFit:true }, bbar:new Ext.PagingToolbar({ pageSize:10, store: store1, displayInfo:true, displayMsg:'显示第{0}条到{1}条记录,一共{2}条', emptyMsg:"没有记录" }) });

2、效果图如图6所示:

图6 添加分页工具条

3、如果要真正实现分页,还需要通过后台脚本获得分页数据,这部分在此不再给出

四、可编辑表格控件——EditorGrid

EditorGrid可以直接在表格里面执行添加、删除、修改、查找等功能,然后一次性保持。还有可以动态修改某个单元格,这些单元格我们先暂时不能为空,保存时会进行检测,为空就无法保存,验证信息会给予提示。

4.1 制作一个简单的EditorGrid

1、定义列,代码如下:

[c-sharp] view plain copy print ? varcm=newExt.grid.ColumnModel([ {header:'编号',dataIndex:'id',width:40,editor:newExt.grid.GridEditor( newExt.form.TextField({ allowBlank:false }))}, {header:'名称',dataIndex:'name',width:180,editor:newExt.grid.GridEditor( newExt.form.TextField({ allowBlank:false }))}, {id:'desn',header:'描述',dataIndex:'desn',width:200}, {header:'时间',dataIndex:'date',type:'date',renderer:Ext.util.Format.dateRenderer('Y年m月d日')} ]); var cm=new Ext.grid.ColumnModel([ {header:'编号',dataIndex:'id',width:40,editor:new Ext.grid.GridEditor( new Ext.form.TextField({ allowBlank:false }) )}, {header:'名称',dataIndex:'name',width:180,editor:new Ext.grid.GridEditor( new Ext.form.TextField({ allowBlank:false }) )}, {id:'desn',header:'描述',dataIndex:'desn',width:200}, {header:'时间',dataIndex:'date',type:'date',renderer:Ext.util.Format.dateRenderer('Y年m月d日')} ]);

2、定义grid,注意此时是EditorGridPanel.

[c-sharp] view plain copy print ? vargrid1=newExt.grid.EditorGridPanel({ renderTo:"grid1", store:store1,height:200,clicksToEdit:1,cm:cm}); var grid1=new Ext.grid.EditorGridPanel({ renderTo:"grid1", store: store1, height:200, clicksToEdit:1, cm:cm });

3、默认情况下,需要双击单元格才能激活编辑器,从而进行修改,不过,也可以给Grid配置clickToEdit:1,这样就可以单击单元格激活编辑器,从而进行修改,如图7所示:

图7 通过单击修改单元格

五、属性表格——PropertyGrid

属性表格扩展自EditorGridPanel,所以可以直接编辑右边的内容,注意:只有右边的,即使你单击左边的单元格,编辑器也会出现在右边。

定义的方法如下:

[c-sharp] view plain copy print ? <mce:scripttype="text/javascript"><!--Ext.onReady(function(){ vargrid=newExt.grid.PropertyGrid({ title:"属性表格", autoHeight:true, width:400, renderTo:'grid1', source:{ "名字":"薛敬明", "创建时间":newDate(Date.parse('12/15/2009')), "是否有效":false, "版本号":.01, "描述":"估计没有啥说的" }});}); //--></mce:script> <mce:script type="text/javascript"><!-- Ext.onReady(function(){ var grid=new Ext.grid.PropertyGrid({ title:"属性表格", autoHeight:true, width:400, renderTo:'grid1', source:{ "名字":"薛敬明", "创建时间":new Date(Date.parse('12/15/2009')), "是否有效":false, "版本号":.01, "描述":"估计没有啥说的" } }); }); // --></mce:script>

效果图如图8所示:

图8 属性表格效果图

六、分组表格——Group

分组表格就是在普通表格的基础上,根据某一列的数据将表格中的数据分组显示的表格控件。

1、首先定义一组数据

[c-sharp] view plain copy print ? vardata=[ ['1','male','name1','desn1'], ['2','male','name2','desn1'], ['3','female','name3','desn1'], ['4','male','name4','desn1'], ['5','female','name5','desn1'], ['6','male','name6','desn1'], ['7','male','name7','desn1'] ]; var data=[ ['1','male','name1','desn1'], ['2','male','name2','desn1'], ['3','female','name3','desn1'], ['4','male','name4','desn1'], ['5','female','name5','desn1'], ['6','male','name6','desn1'], ['7','male','name7','desn1'] ];

2、创建表格的列信息

[c-sharp] view plain copy print ? varsm=newExt.grid.CheckboxSelectionModel(); varcm=newExt.grid.ColumnModel([ newExt.grid.RowNumberer(), sm, {header:'编号',dataIndex:'id',width:40,sortable:true}, {header:'性别',dataIndex:'sex',width:180}, {header:'名称',dataIndex:'name',width:200}, {header:'描述',dataIndex:'desn',width:200} ]); var sm=new Ext.grid.CheckboxSelectionModel(); var cm=new Ext.grid.ColumnModel([ new Ext.grid.RowNumberer(), sm, {header:'编号',dataIndex:'id',width:40,sortable:true}, {header:'性别',dataIndex:'sex',width:180}, {header:'名称',dataIndex:'name',width:200}, {header:'描述',dataIndex:'desn',width:200} ]);

3、创建数据存储对象

[c-sharp] view plain copy print ? varstore1=newExt.data.GroupingStore({ proxy:newExt.data.MemoryProxy(data), reader:newExt.data.ArrayReader({},[ {name:'id'}, {name:'sex'}, {name:'name'}, {name:'desn'} ]), groupField:'sex', sortInfo:{field:'id',direction:"ASC"} });store1.load(); var store1= new Ext.data.GroupingStore({ proxy:new Ext.data.MemoryProxy(data), reader:new Ext.data.ArrayReader({},[ {name:'id'}, {name:'sex'}, {name:'name'}, {name:'desn'} ]), groupField:'sex', sortInfo:{field:'id',direction:"ASC"} }); store1.load();

4、设计分组设计表格

[c-sharp] view plain copy print ? vargrid1=newExt.grid.GridPanel({store:store1,height:300,cm:cm, view:newExt.grid.GroupingView(), renderTo:"grid1" }); var grid1=new Ext.grid.GridPanel({ store: store1, height:300, cm:cm, view:new Ext.grid.GroupingView(), renderTo:"grid1" });

5、代码清单如下,效果图如图9所示。

[c-sharp:collapse] + expand source view plain copy print ? <htmlxmlns="http://www.w3.org/1999/xhtml"> <headid="Head1"runat="server"> <title>分组表格控件</title> <linkrel="stylesheet"type="text/css"href="../resources/css/ext-all.css"mce_href="resources/css/ext-all.css"/> <mce:scripttype="text/javascript"src="../adapter/ext/ext-base.js"mce_src="adapter/ext/ext-base.js"></mce:script> <mce:scripttype="text/javascript"src="../ext-all.js"mce_src="ext-all.js"></mce:script> <mce:scripttype="text/javascript"><!-- Ext.onReady(function(){ varsm=newExt.grid.CheckboxSelectionModel(); varcm=newExt.grid.ColumnModel([ newExt.grid.RowNumberer(), sm, {header:'编号',dataIndex:'id',width:40,sortable:true}, {header:'性别',dataIndex:'sex',width:180}, {header:'名称',dataIndex:'name',width:200}, {header:'描述',dataIndex:'desn',width:200} ]);vardata=[ ['1','male','name1','desn1'], ['2','male','name2','desn1'], ['3','female','name3','desn1'], ['4','male','name4','desn1'], ['5','female','name5','desn1'], ['6','male','name6','desn1'], ['7','male','name7','desn1'] ]; varstore1=newExt.data.GroupingStore({ proxy:newExt.data.MemoryProxy(data), reader:newExt.data.ArrayReader({},[ {name:'id'}, {name:'sex'}, {name:'name'}, {name:'desn'} ]), groupField:'sex', sortInfo:{field:'id',direction:"ASC"} });store1.load(); vargrid1=newExt.grid.GridPanel({ store:store1,height:300,cm:cm, view:newExt.grid.GroupingView(), renderTo:"grid1" });}); //--></mce:script> </head><body> <formid="form1"runat="server"> <divid="grid1"> </div></form></body></html> <html xmlns="http://www.w3.org/1999/xhtml" > <head id="Head1" runat="server"> <title>分组表格控件</title> <link rel="stylesheet" type="text/css" href="../resources/css/ext-all.css" mce_href="resources/css/ext-all.css" /> <mce:script type="text/javascript" src="../adapter/ext/ext-base.js" mce_src="adapter/ext/ext-base.js"></mce:script> <mce:script type="text/javascript" src="../ext-all.js" mce_src="ext-all.js"></mce:script> <mce:script type="text/javascript"><!-- Ext.onReady(function(){ var sm=new Ext.grid.CheckboxSelectionModel(); var cm=new Ext.grid.ColumnModel([ new Ext.grid.RowNumberer(), sm, {header:'编号',dataIndex:'id',width:40,sortable:true}, {header:'性别',dataIndex:'sex',width:180}, {header:'名称',dataIndex:'name',width:200}, {header:'描述',dataIndex:'desn',width:200} ]); var data=[ ['1','male','name1','desn1'], ['2','male','name2','desn1'], ['3','female','name3','desn1'], ['4','male','name4','desn1'], ['5','female','name5','desn1'], ['6','male','name6','desn1'], ['7','male','name7','desn1'] ]; var store1= new Ext.data.GroupingStore({ proxy:new Ext.data.MemoryProxy(data), reader:new Ext.data.ArrayReader({},[ {name:'id'}, {name:'sex'}, {name:'name'}, {name:'desn'} ]), groupField:'sex', sortInfo:{field:'id',direction:"ASC"} }); store1.load(); var grid1=new Ext.grid.GridPanel({ store: store1, height:300, cm:cm, view:new Ext.grid.GroupingView(), renderTo:"grid1" }); }); // --></mce:script> </head> <body> <form id="form1" runat="server"> <div id="grid1"> </div> </form> </body> </html>

图9 分组表格

六、可拖放的表格

首先我们看图10的效果图:

图10 可拖放的表格

注意图10四周的蓝色细条,把鼠标放到上面,就可以用拖放改变表格的高度和宽度,实现这一效果并不难,也不需要对写好的Grid做大的修改,只要在原先的基础上添加如下代码:

[c-sharp] view plain copy print ? varrz=newExt.Resizable('grid1',{ wrap:true, minHeight:100, pinned:true, handles:'all' }); rz.on('resize',grid1.syncSize,grid1); var rz=new Ext.Resizable('grid1',{ wrap:true, minHeight:100, pinned:true, handles:'all' }); rz.on('resize',grid1.syncSize,grid1);

注意:

(1) Resizable必须放在render之后,否则就会出现问题;

(2) handles:'all'代表可以向所有放心拖动表格

七、Grid与右键菜单

Grid提供了四个与右键菜单相关的事件:

(1)contextmenu:全局性的右键事件;

(2)cellcontextmenu:单元格上的右键事件

(3)rowcontextmenu:行上的右键事件

(4)headercontextmenu:表头的右键事件

以下代码我们实现一个行上的右键事件,代码清单如下,效果图如11所示

[c-sharp] view plain copy print ? varcontextmenu=newExt.menu.Menu({ id:'theContextMenu', items:[{ text:'查看详情', handler:function(){}}]}); grid1.on("rowcontextmenu",function(grid,rowIndex,e){ e.preventDefault();grid1.getSelectionModel().selectRow(rowIndex);contextmenu.showAt(e.getXY());}); var contextmenu=new Ext.menu.Menu({ id:'theContextMenu', items:[{ text:'查看详情', handler:function(){ } }] }); grid1.on("rowcontextmenu",function(grid,rowIndex,e){ e.preventDefault(); grid1.getSelectionModel().selectRow(rowIndex); contextmenu.showAt(e.getXY()); });

图11 右键菜单

相关资源:垃圾分类数据集及代码
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