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 javax.lang.model.element.Element;
  import javax.lang.model.element.ElementKind;
  import javax.lang.model.type.TypeMirror;
  
  import org.androidannotations.AndroidAnnotationsEnvironment;
  import org.androidannotations.ElementValidation;
  import org.androidannotations.annotations.PreferenceByKey;
  import org.androidannotations.handler.BaseAnnotationHandler;
  import org.androidannotations.handler.MethodInjectionHandler;
  import org.androidannotations.helper.IdValidatorHelper;
  import org.androidannotations.helper.InjectHelper;
  import org.androidannotations.holder.FoundPreferenceHolder;
  import org.androidannotations.holder.HasPreferences;
  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 PreferenceByKeyHandler extends BaseAnnotationHandler<HasPreferences> implements MethodInjectionHandler<HasPreferences> {
  
  	private final InjectHelper<HasPreferences> injectHelper;
  
  	public PreferenceByKeyHandler(AndroidAnnotationsEnvironment environment) {
  		super(PreferenceByKey.class, environment);
  		injectHelper = new InjectHelper<>(validatorHelper, this);
  	}
  
  	@Override
  	protected void validate(Element element, ElementValidation valid) {
  		injectHelper.validate(PreferenceByKey.class, element, valid);
  		if (!valid.isValid()) {
  			return;
  		}
  
  		if (element.getKind() == ElementKind.PARAMETER) {
  			validatorHelper.enclosingElementExtendsPreferenceActivityOrPreferenceFragment(element.getEnclosingElement(), valid);
  		} else {
  			validatorHelper.enclosingElementExtendsPreferenceActivityOrPreferenceFragment(element, valid);
  		}
  
  		Element param = injectHelper.getParam(element);
  		validatorHelper.isDeclaredType(param, valid);
  
  		validatorHelper.extendsPreference(param, valid);
  
  		validatorHelper.isNotPrivate(element, valid);
  
  		validatorHelper.resIdsExist(element, IRClass.Res.STRING, IdValidatorHelper.FallbackStrategy.USE_ELEMENT_NAME, valid);
  	}
  
  	@Override
  	public void process(Element element, HasPreferences holder) throws Exception {
  		injectHelper.process(element, holder);
  	}
  
  	@Override
  	public JBlock getInvocationBlock(HasPreferences holder) {
  		return holder.getAddPreferencesFromResourceInjectionBlock();
  	}
  
  	@Override
  	public void assignValue(JBlock targetBlock, IJAssignmentTarget fieldRef, HasPreferences holder, Element element, Element param) {
  		TypeMirror prefFieldTypeMirror = param.asType();
  		String typeQualifiedName = prefFieldTypeMirror.toString();
  
  		JFieldRef idRef = annotationHelper.extractOneAnnotationFieldRef(element, IRClass.Res.STRING, true);
  		AbstractJClass preferenceClass = getJClass(typeQualifiedName);
  
  		IJAssignmentTarget preferenceHolderTarget = null;
  		if (element.getKind() == ElementKind.FIELD) {
  			preferenceHolderTarget = fieldRef;
  		}
  		FoundPreferenceHolder preferenceHolder = holder.getFoundPreferenceHolder(idRef, preferenceClass, preferenceHolderTarget);
  		if (!preferenceHolder.getRef().equals(preferenceHolderTarget)) {
  			targetBlock.add(fieldRef.assign(preferenceHolder.getOrCastRef(preferenceClass)));
  		}
  	}
  
  	@Override
  	public void validateEnclosingElement(Element element, ElementValidation valid) {
  		validatorHelper.enclosingElementHasEActivityOrEFragment(element, valid);
  	}
  }
  