java/java-impl/src/com/intellij/refactoring/inlineSuperClass/usageInfo/ReplaceWithSubtypeUsageInfo.java

/*
 * Copyright 2000-2014 JetBrains s.r.o.
 *
 * 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.intellij.refactoring.inlineSuperClass.usageInfo;

import com.intellij.openapi.diagnostic.Logger;
import com.intellij.openapi.project.Project;
import com.intellij.openapi.util.text.StringUtil;
import com.intellij.psi.*;
import com.intellij.psi.codeStyle.JavaCodeStyleManager;
import com.intellij.psi.util.TypeConversionUtil;
import com.intellij.refactoring.util.FixableUsageInfo;
import com.intellij.util.Function;
import com.intellij.util.IncorrectOperationException;

/**
 * @author anna
 * @since 27-Aug-2008
 */
public class ReplaceWithSubtypeUsageInfo extends FixableUsageInfo {
  public static final Logger LOG = Logger.getInstance("#" + ReplaceWithSubtypeUsageInfo.class.getName());
  private final PsiTypeElement myTypeElement;
  private final PsiClassType myTargetClassType;
  private final PsiType myOriginalType;
  private String myConflict;

  public ReplaceWithSubtypeUsageInfo(PsiTypeElement typeElement, PsiClassType classType, final PsiClass[] targetClasses) {
    super(typeElement);
    myTypeElement = typeElement;
    myTargetClassType = classType;
    myOriginalType = myTypeElement.getType();
    if (targetClasses.length > 1) {
      myConflict = typeElement.getText() + " can be replaced with any of " + StringUtil.join(targetClasses, new Function<PsiClass, String>() {
        public String fun(final PsiClass psiClass) {
          return psiClass.getQualifiedName();
        }
      }, ", ") ;
    }
  }

  public void fixUsage() throws IncorrectOperationException {
    if (myTypeElement.isValid()) {
      Project project = myTypeElement.getProject();
      PsiElementFactory elementFactory = JavaPsiFacade.getInstance(project).getElementFactory();
      PsiElement replaced = myTypeElement.replace(elementFactory.createTypeElement(myTargetClassType));
      JavaCodeStyleManager.getInstance(project).shortenClassReferences(replaced);
    }
  }

  @Override
  public String getConflictMessage() {
    if (!TypeConversionUtil.isAssignable(myOriginalType, myTargetClassType)) {
      final String conflict = "No consistent substitution found for " +
                              getElement().getText() +
                              ". Expected \'" +
                              myOriginalType.getPresentableText() +
                              "\' but found \'" +
                              myTargetClassType.getPresentableText() +
                              "\'.";
      if (myConflict == null) {
        myConflict = conflict;
      } else {
        myConflict += "\n" + conflict;
      }
    }
    return myConflict;
  }
}