在实际的网页开发中，大部分时间都要涉及到Form表单的处理。在Ext框架中也提供了很多这方面的控件，而且还有一个专门的FormPanel布 局，该布局默认为放在面板上面的所有控件都是换行放置，而在实际应用中为了美观，有些需要横排，特别是Radio控件，这个时候就需要我们重新定制这些控 件的布局了，该例子中使用CSS来实现这些功能，先贴出一张效果图。
<!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>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
<title>Ext中FormPanel面板及Form控件横排测试(CSS)</title>
<link rel="stylesheet" type="text/css" media="all" href="../ext/resources/css/ext-all.css" />
<style type="text/css" media="all">
.allow-float {clear:none!important;} /* 允许该元素浮动 */
.stop-float {clear:both!important;} /* 阻止该元素浮动 */
.sex-male {float:left;}
.sex-female {float:left;padding:0 0 0 20px;}
.age-field {float:left;padding:0 0 0 58px;*padding:0 0 0 50px!important;*padding:0 0 0 50px;}
</style>
</head>
<body>
<script type="text/javascript" src="../ext/adapter/ext/ext-base.js"></script>
<script type="text/javascript" src="../ext/ext-all.js"></script>
<script type="text/javascript" src="../ext/build/locale/ext-lang-zh_CN.js"></script>
<script type="text/javascript">Ext.BLANK_IMAGE_URL = '../ext/resources/images/default/s.gif';</script>
<script type="text/javascript">
Ext.onReady(function() {
//创建Form面板
var fp = new Ext.form.FormPanel({
buttonAlign:'center',
labelAlign:'right',
labelWidth:40,
frame:true,
bodyStyle:'padding:8px 0 0 0;',
items:[{
xtype:'textfield',
fieldLabel:'姓名',
name:'n_username',
id:'i_username',
width:320
},{
xtype:'radio',
fieldLabel:'性别',
boxLabel:'男',
name:'sex',
id:'male',
itemCls:'sex-male', //向左边浮动,处理控件横排
clearCls:'allow-float', //允许两边浮动,在实际生成的HTML结构中有专门的DIV阻断浮动
checked:true
},{
xtype:'radio',
boxLabel:'女',
name:'sex',
id:'female',
itemCls:'sex-female', //向左浮动,处理控件横排
clearCls:'allow-float', //允许两边浮动
hideLabel:true //不显示前面"性别"的标签
},{
xtype:'textfield',
fieldLabel:'年龄',
name:'n_age',
id:'i_age',
itemCls:'age-field', //向左浮动,处理控件横排
width:133
},{
xtype:'textfield',
fieldLabel:'住址',
name:'n_address',
id:'i_address',
itemCls:'stop-float', //不允许浮动,结束控件横排
width:320
}],
buttons:[{
text:'确定',
handler:onOK //实际应用一般是处理fp.getForm.submit()事件
}, {
text:'重置',
handler:function(){ fp.getForm().reset(); }
}],
keys:[{ //处理键盘回车事件
key:Ext.EventObject.ENTER,
fn:onOK,
scope:this
}]
});
//确定按钮事件,这里只是简单获取各控件值,实际应用一般和后台脚本结合
function onOK() {
var strMsg;
strMsg = ‘姓名：’ + fp.getComponent(’i_username’).getValue() + ‘，性别：’;
if (fp.getComponent(’male’).checked) strMsg += ‘男’;
if (fp.getComponent(’female’).checked) strMsg += ‘女’;
strMsg += ‘，年龄：’ + fp.getComponent(’i_age’).getValue();
strMsg += ‘，住址：’ + fp.getComponent(’i_address’).getValue();
alert(strMsg);
}
//创建主窗口
new Ext.Window({
title:’Ext中FormPanel面板及Form控件横排测试(CSS)’,
width:400,
closable:false,
collapsible:true,
draggable:false,
resizable:false,
modal:true,
border:false,
items:[fp],
buttons:[]
}).show();
});
</script>
</body>
</html>