ClsElementWritingAccessProvider.java

/*
 * Copyright 2000-2012 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.util;

import com.intellij.openapi.vfs.JarFileSystem;
import com.intellij.openapi.vfs.VirtualFile;
import com.intellij.openapi.vfs.WritingAccessProvider;
import org.jetbrains.annotations.NotNull;

import java.util.Collection;
import java.util.Collections;

public class ClsElementWritingAccessProvider extends WritingAccessProvider {

  @NotNull
  @Override
  public Collection<VirtualFile> requestWriting(final VirtualFile... files) {
    return Collections.emptyList();
  }

  @Override
  public boolean isPotentiallyWritable(@NotNull final VirtualFile file) {
    return JarFileSystem.getInstance().getLocalVirtualFileFor(file) == null;
  }
}