在TextInput及TextArea控件上使用Validator和Formatter

最新推荐文章于 2024-03-11 23:41:00 发布

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本文介绍了一个使用Adobe Flex构建的应用程序中如何实现日期、电话号码和货币输入的验证与格式化。通过集成自定义验证器和格式化器，确保了用户输入的数据格式正确并符合预期的标准。

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<?xml version="1.0" encoding="utf-8"?>
<s:Application xmlns:fx="http://ns.adobe.com/mxml/2009" 
			   xmlns:s="library://ns.adobe.com/flex/spark" 
			   xmlns:mx="library://ns.adobe.com/flex/mx" minWidth="955" minHeight="600">
	<fx:Declarations>
		<!-- 将非可视元素（例如服务、值对象）放在此处 -->
		<mx:DateFormatter id="dateFormatter" formatString="day: DD, month:MM, year:YYYY"/>
		<mx:DateValidator id="dateVal" source="{inputDate}" property="text" inputFormat="mm/dd/yyyy"/>
		<mx:PhoneNumberValidator id="phoneValidator" property="text" source="{inputPhone}"/>
		<mx:PhoneFormatter id="phoneFormatter" formatString="(###) ###-####" validPatternChars="#-()"/>
		<mx:CurrencyFormatter id="currencyFormatter" currencySymbol="$" thousandsSeparatorFrom="." decimalSeparatorFrom=","/>
		<mx:NumberValidator id="numValidator" source="{inputCurrency}" property="text" />
	</fx:Declarations>
	<fx:Script>
		<![CDATA[
			import mx.events.ValidationResultEvent;
			private var vResult:ValidationResultEvent;
			//负责验证及格式化的事件处理器
			private function dateFormat():void
			{
				vResult = dateVal.validate();
				if(vResult.type==ValidationResultEvent.VALID)
				{
					inputDate.text = dateFormatter.format(inputDate.text);
				}
				else
				{
					inputDate.text="";	
				}
			}
			private function phoneFormat():void
			{
				vResult = phoneValidator.validate();
				if(vResult.type==ValidationResultEvent.VALID)
				{
					inputPhone.text = phoneFormatter.format(inputPhone.text);
				}
				else
				{
					inputPhone.text="";
				}
			}
			private function currencyFormat():void
			{
				vResult = numValidator.validate();
				if(vResult.type==ValidationResultEvent.VALID)
				{
					inputCurrency.text = currencyFormatter.format(inputCurrency.text);
				}
				else
				{
					inputCurrency.text="";
				}
			}
		]]>
	</fx:Script>
	<mx:Form>
		<mx:FormItem label="Currency Input">
			<s:TextInput id="inputCurrency" focusOut="currencyFormat()" width="300" />
		</mx:FormItem>
		<mx:FormItem label="Phone Number Input">
			<s:TextInput id="inputPhone" focusOut="phoneFormat()" width="300"/>
		</mx:FormItem>
		<mx:FormItem label="Date Input">
			<s:TextInput id="inputDate" focusOut="dateFormat()" width="300"/>
		</mx:FormItem>
	</mx:Form>
</s:Application>