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/**
* Copyright (C) 2010-2013 eBusiness Information, Excilys Group
*
* Licensed under the Apache License, Version 2.0 (the "License"); you may not
* use this file except in compliance with the License. You may obtain a copy of
* the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed To in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations under
* the License.
*/
package org.androidannotations.processing;
import static com.sun.codemodel.JExpr._new;
import static com.sun.codemodel.JExpr._null;
import static com.sun.codemodel.JExpr.invoke;
import java.util.List;
import javax.annotation.processing.ProcessingEnvironment;
import javax.lang.model.element.Element;
import javax.lang.model.element.ExecutableElement;
import javax.lang.model.element.VariableElement;
import javax.lang.model.type.TypeMirror;
import org.androidannotations.helper.IdAnnotationHelper;
import org.androidannotations.processing.EBeansHolder.Classes;
import org.androidannotations.rclass.IRClass;
import org.androidannotations.rclass.IRClass.Res;
import com.sun.codemodel.JBlock;
import com.sun.codemodel.JClass;
import com.sun.codemodel.JCodeModel;
import com.sun.codemodel.JDefinedClass;
import com.sun.codemodel.JExpression;
import com.sun.codemodel.JFieldRef;
import com.sun.codemodel.JInvocation;
import com.sun.codemodel.JMethod;
public abstract class AbstractListenerProcessor implements DecoratingElementProcessor {
private IdAnnotationHelper helper;
protected Classes classes;
protected JCodeModel codeModel;
protected EBeanHolder holder;
public AbstractListenerProcessor(ProcessingEnvironment processingEnv, IRClass rClass) {
helper = new IdAnnotationHelper(processingEnv, getTarget(), rClass);
}
@Override
public void process(Element element, JCodeModel codeModel, EBeanHolder holder) {
classes = holder.classes();
this.codeModel = codeModel;
this.holder = holder;
String methodName = element.getSimpleName().toString();
ExecutableElement executableElement = (ExecutableElement) element;
List<? extends VariableElement> parameters = executableElement.getParameters();
TypeMirror returnType = executableElement.getReturnType();
List<JFieldRef> idsRefs = helper.extractAnnotationFieldRefs(holder, element, Res.ID, true);
JDefinedClass listenerAnonymousClass = codeModel.anonymousClass(getListenerClass());
JMethod listenerMethod = createListenerMethod(listenerAnonymousClass);
listenerMethod.annotate(Override.class);
JBlock listenerMethodBody = listenerMethod.body();
JExpression activityRef = holder.generatedClass.staticRef("this");
JInvocation call = invoke(activityRef, methodName);
makeCall(listenerMethodBody, call, returnType);
processParameters(listenerMethod, call, parameters);
for (JFieldRef idRef : idsRefs) {
ViewChangedHolder onViewChanged = holder.onViewChanged();
JBlock block = onViewChanged.body().block();
JInvocation view = onViewChanged.findViewById(idRef);
block._if(view.ne(_null()))._then().invoke(castWidget(view), getSetterName()).arg(_new(listenerAnonymousClass));
}
}
protected abstract void makeCall(JBlock listenerMethodBody, JInvocation call, TypeMirror returnType);
protected abstract void processParameters(JMethod listenerMethod, JInvocation call, List<? extends VariableElement> userParameters);
protected abstract JMethod createListenerMethod(JDefinedClass listenerAnonymousClass);
protected abstract String getSetterName();
protected abstract JClass getListenerClass();
protected JExpression castWidget(JInvocation view) {
return view;
}
}