001    // Copyright 2005 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    
015    package org.apache.tapestry.annotations;
016    
017    import java.lang.reflect.Method;
018    
019    import org.apache.hivemind.Location;
020    import org.apache.tapestry.enhance.EnhancementOperation;
021    import org.apache.tapestry.spec.IComponentSpecification;
022    import org.apache.tapestry.spec.InjectSpecification;
023    import org.apache.tapestry.spec.InjectSpecificationImpl;
024    
025    /**
026     * Uses the {@link org.apache.tapestry.annotations.InjectPage} annotation to add an
027     * {@link org.apache.tapestry.spec.InjectSpecification} to the
028     * {@link org.apache.tapestry.spec.IComponentSpecification}.
029     * 
030     * @author Howard Lewis Ship
031     * @since 4.0
032     */
033    public class InjectPageAnnotationWorker implements MethodAnnotationEnhancementWorker
034    {
035    
036        public void performEnhancement(EnhancementOperation op, IComponentSpecification spec,
037                Method method, Location location)
038        {
039            InjectPage injectPage = method.getAnnotation(InjectPage.class);
040    
041            String propertyName = AnnotationUtils.getPropertyName(method);
042    
043            InjectSpecification is = new InjectSpecificationImpl();
044    
045            is.setProperty(propertyName);
046            is.setType("page");
047            is.setObject(injectPage.value());
048            is.setLocation(location);
049    
050            spec.addInjectSpecification(is);
051        }
052    
053    }