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.ref;
  
  import javax.lang.model.element.Element;
  import javax.lang.model.element.ElementKind;
  import javax.lang.model.element.ExecutableElement;
  import javax.lang.model.type.TypeMirror;
  
  import org.androidannotations.AndroidAnnotationsEnvironment;
  import org.androidannotations.ElementValidation;
  import org.androidannotations.annotations.ViewById;
  import org.androidannotations.handler.BaseAnnotationHandler;
  import org.androidannotations.handler.MethodInjectionHandler;
  import org.androidannotations.helper.IdValidatorHelper;
  import org.androidannotations.helper.InjectHelper;
  import org.androidannotations.holder.EComponentWithViewSupportHolder;
  import org.androidannotations.holder.EFragmentHolder;
  import org.androidannotations.holder.FoundViewHolder;
  import org.androidannotations.rclass.IRClass;
  
  import com.helger.jcodemodel.AbstractJClass;
  import com.helger.jcodemodel.IJAssignmentTarget;
  import com.helger.jcodemodel.JBlock;
  import com.helger.jcodemodel.JFieldRef;
  
  public class ViewByIdHandler extends BaseAnnotationHandler<EComponentWithViewSupportHolder> implements MethodInjectionHandler<EComponentWithViewSupportHolder> {
  
  	private final InjectHelper<EComponentWithViewSupportHolder> injectHelper;
  
  	public ViewByIdHandler(AndroidAnnotationsEnvironment environment) {
  		super(ViewById.class, environment);
  		injectHelper = new InjectHelper<>(validatorHelper, this);
  	}
  
  	@Override
  	public void validate(Element element, ElementValidation validation) {
  		injectHelper.validate(ViewById.class, element, validation);
  		if (!validation.isValid()) {
  			return;
  		}
  
  		Element param = injectHelper.getParam(element);
  		validatorHelper.isDeclaredType(param, validation);
  
  		validatorHelper.extendsView(param, validation);
  
  		validatorHelper.resIdsExist(element, IRClass.Res.ID, IdValidatorHelper.FallbackStrategy.USE_ELEMENT_NAME, validation);
  
  		validatorHelper.isNotPrivate(element, validation);
  	}
  
  	@Override
  	public void process(Element element, EComponentWithViewSupportHolder holder) {
  		injectHelper.process(element, holder);
  		if (holder instanceof EFragmentHolder && isFieldInjection(element)) {
  			String fieldName = element.getSimpleName().toString();
  			((EFragmentHolder) holder).clearInjectedView(ref(fieldName));
  		}
  	}
  
  	private boolean isFieldInjection(Element element) {
  		Element enclosingElement = element.getEnclosingElement();
  		return !((element instanceof ExecutableElement) || (enclosingElement instanceof ExecutableElement));
  	}
  
  	@Override
  	public JBlock getInvocationBlock(EComponentWithViewSupportHolder holder) {
  		return holder.getOnViewChangedBodyInjectionBlock();
  	}
  
  	@Override
  	public void assignValue(JBlock targetBlock, IJAssignmentTarget fieldRef, EComponentWithViewSupportHolder holder, Element element, Element param) {
  		TypeMirror uiFieldTypeMirror = param.asType();
  
  		JFieldRef idRef = annotationHelper.extractOneAnnotationFieldRef(element, IRClass.Res.ID, true);
  		AbstractJClass viewClass = codeModelHelper.typeMirrorToJClass(uiFieldTypeMirror);
  
  		IJAssignmentTarget viewHolderTarget = null;
  		if (element.getKind() == ElementKind.FIELD) {
  			viewHolderTarget = fieldRef;
  		}
  		FoundViewHolder viewHolder = holder.getFoundViewHolder(idRef, viewClass, viewHolderTarget);
  		if (!viewHolder.getRef().equals(viewHolderTarget)) {
  			targetBlock.add(fieldRef.assign(viewHolder.getOrCastRef(viewClass)));
  		}
  	}
  
  	@Override
  	public void validateEnclosingElement(Element element, ElementValidation valid) {
  		validatorHelper.enclosingElementHasEnhancedViewSupportAnnotation(element, valid);
  	}
  }
  