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.engine.state.ApplicationStateManager;
021    import org.apache.tapestry.enhance.EnhancementOperation;
022    import org.apache.tapestry.enhance.InjectStateWorker;
023    import org.apache.tapestry.spec.IComponentSpecification;
024    
025    /**
026     * Injects an Application State Object.
027     * 
028     * @author Howard M. Lewis Ship
029     * @since 4.0
030     * @see org.apache.tapestry.annotations.InjectState
031     * @see org.apache.tapestry.enhance.InjectStateWorker
032     */
033    public class InjectStateAnnotationWorker implements MethodAnnotationEnhancementWorker
034    {
035        final InjectStateWorker _delegate;
036    
037        InjectStateAnnotationWorker(InjectStateWorker delegate)
038        {
039            _delegate = delegate;
040        }
041    
042        public InjectStateAnnotationWorker()
043        {
044            this(new InjectStateWorker());
045        }
046    
047        public void performEnhancement(EnhancementOperation op, IComponentSpecification spec,
048                Method method, Location location)
049        {
050            InjectState is = method.getAnnotation(InjectState.class);
051    
052            String propertyName = AnnotationUtils.getPropertyName(method);
053    
054            _delegate.injectState(op, is.value(), propertyName, location);
055        }
056    
057        public void setApplicationStateManager(ApplicationStateManager applicationStateManager)
058        {
059            _delegate.setApplicationStateManager(applicationStateManager);
060        }
061    }