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Copy pathItemSelectedProcessor.java
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130 lines (105 loc) · 4.95 KB
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/**
* Copyright (C) 2010-2011 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 com.googlecode.androidannotations.processing;
import static com.sun.codemodel.JExpr._null;
import static com.sun.codemodel.JExpr.lit;
import java.lang.annotation.Annotation;
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.TypeKind;
import javax.lang.model.type.TypeMirror;
import com.googlecode.androidannotations.annotations.ItemSelect;
import com.googlecode.androidannotations.helper.IdAnnotationHelper;
import com.googlecode.androidannotations.rclass.IRClass;
import com.sun.codemodel.JBlock;
import com.sun.codemodel.JClass;
import com.sun.codemodel.JCodeModel;
import com.sun.codemodel.JDefinedClass;
import com.sun.codemodel.JExpr;
import com.sun.codemodel.JFieldRef;
import com.sun.codemodel.JInvocation;
import com.sun.codemodel.JMethod;
import com.sun.codemodel.JMod;
import com.sun.codemodel.JVar;
/**
* @author Pierre-Yves Ricau
* @author Mathieu Boniface
*/
public class ItemSelectedProcessor implements ElementProcessor {
private IdAnnotationHelper helper;
public ItemSelectedProcessor(ProcessingEnvironment processingEnv, IRClass rClass) {
helper = new IdAnnotationHelper(processingEnv, getTarget(), rClass);
}
@Override
public Class<? extends Annotation> getTarget() {
return ItemSelect.class;
}
@Override
public void process(Element element, JCodeModel codeModel, EBeansHolder activitiesHolder) {
EBeanHolder holder = activitiesHolder.getEnclosingEBeanHolder(element);
String methodName = element.getSimpleName().toString();
ExecutableElement executableElement = (ExecutableElement) element;
List<? extends VariableElement> parameters = executableElement.getParameters();
ItemSelect annotation = element.getAnnotation(ItemSelect.class);
List<JFieldRef> idsRefs = helper.extractFieldRefsFromAnnotationValues(element, annotation.value(), "ItemSelected", holder);
JDefinedClass onItemSelectedListenerClass = codeModel.anonymousClass(holder.refClass("android.widget.AdapterView.OnItemSelectedListener"));
JMethod onItemSelectedMethod = onItemSelectedListenerClass.method(JMod.PUBLIC, codeModel.VOID, "onItemSelected");
JClass adapterViewClass = holder.refClass("android.widget.AdapterView");
JClass viewClass = holder.refClass("android.view.View");
JClass narrowAdapterViewClass = adapterViewClass.narrow(codeModel.wildcard());
JVar onItemClickParentParam = onItemSelectedMethod.param(narrowAdapterViewClass, "parent");
onItemSelectedMethod.param(viewClass, "view");
JVar onItemClickPositionParam = onItemSelectedMethod.param(codeModel.INT, "position");
onItemSelectedMethod.param(codeModel.LONG, "id");
JInvocation itemSelectedCall = onItemSelectedMethod.body().invoke(methodName);
itemSelectedCall.arg(JExpr.TRUE);
boolean hasItemParameter = parameters.size() == 2;
boolean secondParameterIsInt = false;
String secondParameterQualifiedName = null;
if (hasItemParameter) {
VariableElement secondParameter = parameters.get(1);
TypeMirror secondParameterType = secondParameter.asType();
secondParameterQualifiedName = secondParameterType.toString();
secondParameterIsInt = secondParameterType.getKind() == TypeKind.INT;
}
if (hasItemParameter) {
if (secondParameterIsInt) {
itemSelectedCall.arg(onItemClickPositionParam);
} else {
itemSelectedCall.arg(JExpr.cast(holder.refClass(secondParameterQualifiedName), JExpr.invoke(onItemClickParentParam, "getAdapter").invoke("getItem").arg(onItemClickPositionParam)));
}
}
JMethod onNothingSelectedMethod = onItemSelectedListenerClass.method(JMod.PUBLIC, codeModel.VOID, "onNothingSelected");
onNothingSelectedMethod.param(narrowAdapterViewClass, "parent");
JInvocation nothingSelectedCall = onNothingSelectedMethod.body().invoke(methodName);
nothingSelectedCall.arg(JExpr.FALSE);
if (hasItemParameter) {
if (secondParameterIsInt) {
nothingSelectedCall.arg(lit(-1));
} else {
nothingSelectedCall.arg(_null());
}
}
for (JFieldRef idRef : idsRefs) {
JBlock body = holder.afterSetContentView.body();
JInvocation findViewById = JExpr.invoke("findViewById");
body.add(JExpr.invoke(JExpr.cast(narrowAdapterViewClass, findViewById.arg(idRef)), "setOnItemSelectedListener").arg(JExpr._new(onItemSelectedListenerClass)));
}
}
}