java/java-impl/src/com/intellij/refactoring/rename/RenameAliasingPomTargetProcessor.java

/*
 * Copyright 2000-2010 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.rename;

import com.intellij.openapi.extensions.Extensions;
import com.intellij.pom.PomTarget;
import com.intellij.pom.PomTargetPsiElement;
import com.intellij.pom.references.PomService;
import com.intellij.psi.PsiElement;
import com.intellij.psi.targets.AliasingPsiTarget;
import com.intellij.psi.targets.AliasingPsiTargetMapper;
import org.jetbrains.annotations.NotNull;

import java.util.Map;

public class RenameAliasingPomTargetProcessor extends RenamePsiElementProcessor {

  @Override
  public boolean canProcessElement(@NotNull PsiElement element) {
    return element instanceof PomTarget || element instanceof PomTargetPsiElement;
  }

  @Override
  public void prepareRenaming(PsiElement element, String newName, Map<PsiElement, String> allRenames) {
    PomTarget target = null;
    if (element instanceof PomTargetPsiElement) {
      target = ((PomTargetPsiElement)element).getTarget();
    }
    else if (element instanceof PomTarget) {
      target = (PomTarget)element;
    }

    if (target != null) {
      for (AliasingPsiTargetMapper mapper : Extensions.getExtensions(AliasingPsiTargetMapper.EP_NAME)) {
        for (AliasingPsiTarget psiTarget : mapper.getTargets(target)) {
          PsiElement psiElement = PomService.convertToPsi(psiTarget);
          String name = psiTarget.getNameAlias(newName);

          String definedName = allRenames.put(psiElement, name);
          if (definedName != null) {
            assert definedName.equals(name);
          }
          else {
            prepareRenaming(psiElement, name, allRenames);
          }
        }
      }
    }
  }
}