content: /**
   * Copyright (C) 2010-2016 eBusiness Information, Excilys Group
   * Copyright (C) 2016-2020 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.internal.core.handler;
  
  import static com.helger.jcodemodel.JExpr._this;
  import static com.helger.jcodemodel.JExpr.cast;
  import static com.helger.jcodemodel.JExpr.ref;
  import static org.androidannotations.helper.ModelConstants.classSuffix;
  
  import javax.lang.model.element.Element;
  import javax.lang.model.type.TypeMirror;
  
  import org.androidannotations.AndroidAnnotationsEnvironment;
  import org.androidannotations.ElementValidation;
  import org.androidannotations.annotations.Bean;
  import org.androidannotations.annotations.EBean;
  import org.androidannotations.annotations.NonConfigurationInstance;
  import org.androidannotations.handler.BaseAnnotationHandler;
  import org.androidannotations.holder.EActivityHolder;
  import org.androidannotations.holder.NonConfigurationHolder;
  
  import com.helger.jcodemodel.AbstractJClass;
  import com.helger.jcodemodel.JBlock;
  import com.helger.jcodemodel.JClassAlreadyExistsException;
  import com.helger.jcodemodel.JFieldVar;
  import com.helger.jcodemodel.JVar;
  
  public class NonConfigurationInstanceHandler extends BaseAnnotationHandler<EActivityHolder> {
  
  	public NonConfigurationInstanceHandler(AndroidAnnotationsEnvironment environment) {
  		super(NonConfigurationInstance.class, environment);
  	}
  
  	@Override
  	public void validate(Element element, ElementValidation validation) {
  		validatorHelper.enclosingElementHasEActivity(element, validation);
  
  		validatorHelper.isNotPrivate(element, validation);
  
  		validatorHelper.isNotFinal(element, validation);
  
  		if (element.getAnnotation(Bean.class) != null) {
  			validatorHelper.typeIsValid(EBean.class, element.asType(), validation);
  		}
  	}
  
  	@Override
  	public void process(Element element, EActivityHolder holder) throws JClassAlreadyExistsException {
  		String fieldName = element.getSimpleName().toString();
  		AbstractJClass fieldType = codeModelHelper.typeMirrorToJClass(element.asType());
  
  		NonConfigurationHolder ncHolder = holder.getNonConfigurationHolder();
  		JFieldVar ncHolderField = ncHolder.createField(fieldName, fieldType);
  
  		injectInInit(element, holder, fieldName, ncHolderField);
  		retainInOnRetain(holder, fieldName, ncHolderField);
  	}
  
  	private void injectInInit(Element element, EActivityHolder holder, String fieldName, JFieldVar ncHolderField) throws JClassAlreadyExistsException {
  		JBlock initIfNonConfigurationNotNullBlock = holder.getInitIfNonConfigurationNotNullBlock();
  		JVar initNonConfigurationInstance = holder.getInitNonConfigurationInstance();
  		initIfNonConfigurationNotNullBlock.assign(ref(fieldName), initNonConfigurationInstance.ref(ncHolderField));
  		rebindContextIfBean(element, initIfNonConfigurationNotNullBlock, ncHolderField);
  	}
  
  	private void retainInOnRetain(EActivityHolder holder, String fieldName, JFieldVar ncHolderField) throws JClassAlreadyExistsException {
  		JBlock onRetainNonConfigurationInstanceBindBlock = holder.getOnRetainNonConfigurationInstanceBindBlock();
  		JVar onRetainNonConfigurationInstance = holder.getOnRetainNonConfigurationInstance();
  		onRetainNonConfigurationInstanceBindBlock.assign(onRetainNonConfigurationInstance.ref(ncHolderField), ref(fieldName));
  	}
  
  	private void rebindContextIfBean(Element element, JBlock initIfNonConfigurationNotNullBlock, JFieldVar field) {
  		boolean hasBeanAnnotation = element.getAnnotation(Bean.class) != null;
  		if (hasBeanAnnotation) {
  
  			TypeMirror elementType = annotationHelper.extractAnnotationClassParameter(element, Bean.class.getName());
  			if (elementType == null) {
  				elementType = element.asType();
  			}
  			String typeQualifiedName = elementType.toString();
  			AbstractJClass fieldGeneratedBeanClass = getJClass(typeQualifiedName + classSuffix());
  
  			// do not generate rebind call for singleton beans
  			Element eBeanTypeElement = annotationHelper.getTypeUtils().asElement(elementType);
  			EBean eBean = eBeanTypeElement.getAnnotation(EBean.class);
  			if (eBean != null && eBean.scope() != EBean.Scope.Singleton) {
  				initIfNonConfigurationNotNullBlock.invoke(cast(fieldGeneratedBeanClass, field), "rebind").arg(_this());
  			}
  		}
  	}
  }
  