RenameJavaModuleProcessor.java

/*
 * Copyright 2000-2017 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.project.Project;
import com.intellij.psi.PsiElement;
import com.intellij.psi.PsiJavaModule;
import com.intellij.psi.impl.java.stubs.index.JavaModuleNameIndex;
import com.intellij.psi.search.ProjectScope;
import com.intellij.refactoring.RefactoringBundle;
import com.intellij.usageView.UsageInfo;
import com.intellij.util.containers.ContainerUtil;
import org.jetbrains.annotations.NotNull;

import java.util.List;
import java.util.Map;

public class RenameJavaModuleProcessor extends RenamePsiElementProcessor {
  @Override
  public boolean canProcessElement(@NotNull PsiElement element) {
    return element instanceof PsiJavaModule;
  }

  @Override
  public void findCollisions(PsiElement element, String newName, Map<? extends PsiElement, String> allRenames, List<UsageInfo> result) {
    Project project = element.getProject();
    PsiJavaModule existing = ContainerUtil.getFirstItem(
      JavaModuleNameIndex.getInstance().get(newName, project, ProjectScope.getProjectScope(project)));
    if (existing != null) {
      result.add(new UnresolvableCollisionUsageInfo(element, existing) {
        @Override
        public String getDescription() {
          return RefactoringBundle.message("rename.module.already.exists", newName);
        }
      });
    }
  }
}