001/**
002 * Copyright 2013 John Ericksen
003 *
004 * Licensed under the Apache License, Version 2.0 (the "License");
005 * you may not use this file except in compliance with the License.
006 * You may obtain a copy of the License at
007 *
008 *    http://www.apache.org/licenses/LICENSE-2.0
009 *
010 * Unless required by applicable law or agreed to in writing, software
011 * distributed under the License is distributed on an "AS IS" BASIS,
012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
013 * See the License for the specific language governing permissions and
014 * limitations under the License.
015 */
016package org.androidtransfuse.analysis.astAnalyzer;
017
018import org.androidtransfuse.adapter.ASTAnnotation;
019import org.androidtransfuse.adapter.ASTMethod;
020import org.androidtransfuse.adapter.ASTType;
021import org.androidtransfuse.analysis.AnalysisContext;
022import org.androidtransfuse.annotations.EventListener;
023import org.androidtransfuse.model.InjectionNode;
024
025/**
026 * Analyzes the given class for listener annotations.  Adds these annotated methods to a ListenerAspect for
027 * code generation during the generation phase.
028 *
029 * @author John Ericksen
030 */
031public class ListenerAnalysis extends ASTAnalysisAdaptor {
032
033    @Override
034    public void analyzeMethod(InjectionNode injectionNode, ASTType concreteType, ASTMethod astMethod, AnalysisContext context) {
035        for (ASTAnnotation annotation : astMethod.getAnnotations()) {
036            ASTType annotationType = annotation.getASTType();
037            if (annotationType.isAnnotated(EventListener.class)) {
038                addMethod(injectionNode, annotationType, astMethod);
039            }
040        }
041    }
042
043    private void addMethod(InjectionNode injectionNode, ASTType annotation, ASTMethod astMethod) {
044
045        if (!injectionNode.containsAspect(ListenerAspect.class)) {
046            injectionNode.addAspect(new ListenerAspect());
047        }
048        ListenerAspect methodCallbackToken = injectionNode.getAspect(ListenerAspect.class);
049
050        methodCallbackToken.addMethodCallback(annotation, astMethod);
051
052        ASTInjectionAspect injectionAspect = injectionNode.getAspect(ASTInjectionAspect.class);
053
054        if (injectionAspect == null) {
055            injectionAspect = new ASTInjectionAspect();
056            injectionNode.addAspect(ASTInjectionAspect.class, injectionAspect);
057        }
058
059        //injection node is now required outside of the local scope
060        injectionAspect.setAssignmentType(ASTInjectionAspect.InjectionAssignmentType.FIELD);
061    }
062}