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/**
* Copyright (C) 2010-2016 eBusiness Information, Excilys Group
* Copyright (C) 2016-2017 the AndroidAnnotations project
*
* 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.holder;
import static com.helger.jcodemodel.JExpr._super;
import static com.helger.jcodemodel.JExpr.invoke;
import static com.helger.jcodemodel.JMod.PRIVATE;
import static com.helger.jcodemodel.JMod.PUBLIC;
import static com.helger.jcodemodel.JMod.STATIC;
import static javax.lang.model.element.ElementKind.CONSTRUCTOR;
import static org.androidannotations.helper.ModelConstants.generationSuffix;
import java.util.ArrayList;
import java.util.List;
import javax.lang.model.element.Element;
import javax.lang.model.element.ExecutableElement;
import javax.lang.model.element.TypeElement;
import javax.lang.model.element.VariableElement;
import org.androidannotations.AndroidAnnotationsEnvironment;
import com.helger.jcodemodel.AbstractJClass;
import com.helger.jcodemodel.JBlock;
import com.helger.jcodemodel.JExpr;
import com.helger.jcodemodel.JFieldVar;
import com.helger.jcodemodel.JInvocation;
import com.helger.jcodemodel.JMethod;
import com.helger.jcodemodel.JMod;
import com.helger.jcodemodel.JVar;
public class EViewHolder extends EComponentWithViewSupportHolder implements HasInstanceState, HasReceiverRegistration {
protected static final String ALREADY_INFLATED_COMMENT = "" // +
+ "The alreadyInflated_ hack is needed because of an Android bug\n" // +
+ "which leads to infinite calls of onFinishInflate()\n" //
+ "when inflating a layout with a parent and using\n" //
+ "the <code><merge /></code> tag.";
private static final String SUPPRESS_WARNING_COMMENT = "" //
+ "We use @SuppressWarning here because our java code\n" //
+ "generator doesn't know that there is no need\n" //
+ "to import OnXXXListeners from View as we already\n" //
+ "are in a View.";
private JMethod onAttachedToWindowMethod;
private JBlock onAttachedToWindowAfterSuperBlock;
private JMethod onDetachedFromWindowMethod;
private JBlock onDetachedFromWindowBeforeSuperBlock;
private ReceiverRegistrationDelegate<EViewHolder> receiverRegistrationDelegate;
private ViewInstanceStateDelegate instanceStateDelegate;
protected JBlock initBody;
protected JMethod onFinishInflate;
protected JFieldVar alreadyInflated;
public EViewHolder(AndroidAnnotationsEnvironment environment, TypeElement annotatedElement) throws Exception {
super(environment, annotatedElement);
addSuppressWarning();
createConstructorAndBuilder();
receiverRegistrationDelegate = new ReceiverRegistrationDelegate<>(this);
instanceStateDelegate = new ViewInstanceStateDelegate(this);
}
private void addSuppressWarning() {
generatedClass.javadoc().append(SUPPRESS_WARNING_COMMENT);
codeModelHelper.addSuppressWarnings(getGeneratedClass(), "unused");
}
private void createConstructorAndBuilder() {
List<ExecutableElement> constructors = new ArrayList<>();
for (Element e : annotatedElement.getEnclosedElements()) {
if (e.getKind() == CONSTRUCTOR) {
constructors.add((ExecutableElement) e);
}
}
for (ExecutableElement userConstructor : constructors) {
JMethod copyConstructor = generatedClass.constructor(PUBLIC);
JMethod staticHelper = generatedClass.method(PUBLIC | STATIC, generatedClass._extends(), "build");
codeModelHelper.generify(staticHelper, getAnnotatedElement());
JBlock body = copyConstructor.body();
JInvocation superCall = body.invoke("super");
AbstractJClass narrowedGeneratedClass = narrow(generatedClass);
JInvocation newInvocation = JExpr._new(narrowedGeneratedClass);
for (VariableElement param : userConstructor.getParameters()) {
String paramName = param.getSimpleName().toString();
AbstractJClass paramType = codeModelHelper.typeMirrorToJClass(param.asType());
copyConstructor.param(paramType, paramName);
staticHelper.param(paramType, paramName);
superCall.arg(JExpr.ref(paramName));
newInvocation.arg(JExpr.ref(paramName));
}
JVar newCall = staticHelper.body().decl(narrowedGeneratedClass, "instance", newInvocation);
staticHelper.body().invoke(newCall, getOnFinishInflate());
staticHelper.body()._return(newCall);
body.invoke(getInit());
}
}
@Override
protected void setContextRef() {
contextRef = invoke("getContext");
}
@Override
protected void setInit() {
init = generatedClass.method(PRIVATE, getCodeModel().VOID, "init" + generationSuffix());
viewNotifierHelper.wrapInitWithNotifier();
}
@Override
public JBlock getInitBody() {
if (initBody == null) {
setInit();
}
return initBody;
}
public void setInitBody(JBlock initBody) {
this.initBody = initBody;
}
public JMethod getOnFinishInflate() {
if (onFinishInflate == null) {
setOnFinishInflate();
}
return onFinishInflate;
}
protected void setOnFinishInflate() {
onFinishInflate = generatedClass.method(PUBLIC, getCodeModel().VOID, "onFinishInflate");
onFinishInflate.annotate(Override.class);
onFinishInflate.javadoc().append(ALREADY_INFLATED_COMMENT.replaceAll("alreadyInflated_", "alreadyInflated" + generationSuffix()));
JBlock ifNotInflated = onFinishInflate.body()._if(getAlreadyInflated().not())._then();
ifNotInflated.assign(getAlreadyInflated(), JExpr.TRUE);
getInit();
viewNotifierHelper.invokeViewChanged(ifNotInflated);
onFinishInflate.body().invoke(JExpr._super(), "onFinishInflate");
}
public JFieldVar getAlreadyInflated() {
if (alreadyInflated == null) {
setAlreadyInflated();
}
return alreadyInflated;
}
@Override
public JBlock getOnCreateAfterSuperBlock() {
return receiverRegistrationDelegate.getOnCreateAfterSuperBlock();
}
@Override
public JBlock getOnDestroyBeforeSuperBlock() {
return receiverRegistrationDelegate.getOnDestroyBeforeSuperBlock();
}
@Override
public JBlock getOnStartAfterSuperBlock() {
return receiverRegistrationDelegate.getOnStartAfterSuperBlock();
}
@Override
public JBlock getOnStopBeforeSuperBlock() {
return receiverRegistrationDelegate.getOnStopBeforeSuperBlock();
}
@Override
public JBlock getOnResumeAfterSuperBlock() {
return receiverRegistrationDelegate.getOnResumeAfterSuperBlock();
}
@Override
public JBlock getOnPauseBeforeSuperBlock() {
return receiverRegistrationDelegate.getOnPauseBeforeSuperBlock();
}
@Override
public JBlock getOnAttachAfterSuperBlock() {
return getOnAttachedToWindowAfterSuperBlock();
}
@Override
public JBlock getOnDetachBeforeSuperBlock() {
return getOnDetachedToWindowBeforeSuperBlock();
}
@Override
public JFieldVar getIntentFilterField(ReceiverRegistrationDelegate.IntentFilterData intentFilterData) {
return receiverRegistrationDelegate.getIntentFilterField(intentFilterData);
}
@Override
public JBlock getIntentFilterInitializationBlock(ReceiverRegistrationDelegate.IntentFilterData intentFilterData) {
return getInitBodyInjectionBlock();
}
protected JBlock getOnAttachedToWindowAfterSuperBlock() {
if (onAttachedToWindowAfterSuperBlock == null) {
setOnAttachedToWindow();
}
return onAttachedToWindowAfterSuperBlock;
}
protected JBlock getOnDetachedToWindowBeforeSuperBlock() {
if (onDetachedFromWindowBeforeSuperBlock == null) {
setOnDetachedFromWindow();
}
return onDetachedFromWindowBeforeSuperBlock;
}
private void setAlreadyInflated() {
alreadyInflated = generatedClass.field(PRIVATE, getCodeModel().BOOLEAN, "alreadyInflated" + generationSuffix(), JExpr.FALSE);
}
private void setOnAttachedToWindow() {
onAttachedToWindowMethod = generatedClass.method(JMod.PUBLIC, getCodeModel().VOID, "onAttachedToWindow");
onAttachedToWindowMethod.annotate(Override.class);
JBlock body = onAttachedToWindowMethod.body();
body.invoke(_super(), onAttachedToWindowMethod);
onAttachedToWindowAfterSuperBlock = body.blockSimple();
}
private void setOnDetachedFromWindow() {
onDetachedFromWindowMethod = generatedClass.method(JMod.PUBLIC, getCodeModel().VOID, "onDetachedFromWindow");
onDetachedFromWindowMethod.annotate(Override.class);
JBlock body = onDetachedFromWindowMethod.body();
onDetachedFromWindowBeforeSuperBlock = body.blockSimple();
body.invoke(_super(), onAttachedToWindowMethod);
}
@Override
public JBlock getSaveStateMethodBody() {
return instanceStateDelegate.getSaveStateMethodBody();
}
@Override
public JVar getSaveStateBundleParam() {
return instanceStateDelegate.getSaveStateBundleParam();
}
@Override
public JMethod getRestoreStateMethod() {
return instanceStateDelegate.getRestoreStateMethod();
}
@Override
public JBlock getRestoreStateMethodBody() {
return instanceStateDelegate.getRestoreStateMethodBody();
}
@Override
public JVar getRestoreStateBundleParam() {
return instanceStateDelegate.getRestoreStateBundleParam();
}
}