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Enjoy Web Dev With Tapestry 一书的源代码

<?xml version="1.0"?>
<!DOCTYPE page-specification PUBLIC
  "-//Apache Software Foundation//Tapestry Specification 4.0//EN"
  "http://jakarta.apache.org/tapestry/dtd/Tapestry_4_0.dtd">
<page-specification class="com.ttdev.postage.Home">
	<bean name="patronCodeValidator" class="com.ttdev.postage.PatronCodeValidator">
		<set name="knownPatrons" value="ognl:knownPatrons"/>
	</bean>
	<component id="form" type="Form">
		<binding name="listener" value="listener:onSubmit"/>
		<binding name="delegate" value="beans.delegate"/>
		<binding name="clientValidationEnabled" value="true"/>
	</component>
	<component id="weight" type="TextField">
		<binding name="value" value="weight"/>
		<binding name="translator" value="translator:number,pattern=#.#"/>
		<binding name="validators" value="validators:required[You must enter {0}!],min=0"/>
		<binding name="displayName" value="literal:Weight"/>
	</component>
	<component id="patronCode" type="TextField">
		<binding name="value" value="patronCode"/>
		<binding name="validators" value="bean:patronCodeValidator"/>
	</component>
	<component id="weightLabel" type="FieldLabel">
		<binding name="field" value="component:weight"/>
	</component>
	<property name="currentFieldTracking"/>
	<component id="errors" type="For">
		<binding name="source" value="beans.delegate.fieldTracking"/>
		<binding name="value" value="currentFieldTracking"/>
	</component>
	<component id="error" type="Delegator">
		<binding name="delegate" value="currentFieldTracking.errorRenderer"/>
	</component>
	<component id="isInError" type="Conditional">
		<binding name="condition" value="currentFieldTracking.inError"/>
		<binding name="element" value="literal:li"/>
	</component>
	<component id="shippingDate" type="DatePicker">
		<binding name="value" value="shippingDate"/>
		<binding name="translator" value="translator:date,pattern=yyyy/MM/dd"/>
		<binding name="validators" value="validators:required,minDate=7/1/2005,maxDate=7/31/2005"/>
		<binding name="displayName" value="literal:Shipping date"/>
	</component>
	<component id="desc" type="TextArea">
		<binding name="value" value="desc"/>
		<binding name="validators" value="validators:required,maxLength=20"/>
		<binding name="displayName" value="literal:Description"/>
	</component>
</page-specification>