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
015package org.apache.tapestry.annotations;
016
017import org.apache.hivemind.Location;
018import org.apache.tapestry.TapestryUtils;
019import org.apache.tapestry.enhance.EnhancementOperation;
020import org.apache.tapestry.spec.IComponentSpecification;
021
022/**
023 * Sets properties of the {@link org.apache.tapestry.spec.IComponentSpecification} based on the
024 * {@link org.apache.tapestry.annotations.ComponentClass} annotation. In addition, marks the
025 * component as deprecated if the {@link java.lang.Deprecated} annotation is present on the class.
026 * 
027 * @author Howard Lewis Ship
028 * @since 4.0
029 */
030public class ComponentClassAnnotationWorker implements ClassAnnotationEnhancementWorker
031{
032
033    public void performEnhancement(EnhancementOperation op, IComponentSpecification spec,
034            Class baseClass, Location location)
035    {
036        ComponentClass component = (ComponentClass) baseClass.getAnnotation(ComponentClass.class);
037
038        spec.setAllowBody(component.allowBody());
039        spec.setAllowInformalParameters(component.allowInformalParameters());
040        spec.setLocation(location);
041
042        String[] names = TapestryUtils.split(component.reservedParameters());
043        for (String name : names)
044            spec.addReservedParameterName(name);
045
046        if (baseClass.isAnnotationPresent(Deprecated.class))
047            spec.setDeprecated(true);
048    }
049
050}