001// Copyright 2008, 2009 The Apache Software Foundation 002// 003// Licensed under the Apache License, Version 2.0 (the "License"); 004// you may not use this file except in compliance with the License. 005// You may obtain a copy of the License at 006// 007// http://www.apache.org/licenses/LICENSE-2.0 008// 009// Unless required by applicable law or agreed to in writing, software 010// distributed under the License is distributed on an "AS IS" BASIS, 011// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 012// See the License for the specific language governing permissions and 013// limitations under the License. 014 015package org.apache.tapestry5.annotations; 016 017import java.lang.annotation.Documented; 018import static java.lang.annotation.ElementType.FIELD; 019import java.lang.annotation.Retention; 020import static java.lang.annotation.RetentionPolicy.RUNTIME; 021import java.lang.annotation.Target; 022 023import static org.apache.tapestry5.ioc.annotations.AnnotationUseContext.PAGE; 024import org.apache.tapestry5.ioc.annotations.UseWith; 025 026/** 027 * Annotation for a field for which the page activation context handlers (onActivate and onPassivate) should be created. 028 * In order to use this annotation you must contribute a {@link org.apache.tapestry5.ValueEncoder} for the class of the 029 * annotated property. 030 * <p/> 031 * You should not use this annotation more than once per page class; doing it will result in a runtime exception. 032 */ 033@Target(FIELD) 034@Documented 035@Retention(RUNTIME) 036@UseWith(PAGE) 037public @interface PageActivationContext 038{ 039 /** 040 * Whether to create an activate event handler. 041 */ 042 boolean activate() default true; 043 044 /** 045 * Whether to create a passivate event handler 046 */ 047 boolean passivate() default true; 048}