java/java-impl/src/com/intellij/ide/macro/FilePackageMacro.java

/*
 * Copyright 2000-2009 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.ide.macro;

import com.intellij.ide.IdeBundle;
import com.intellij.openapi.actionSystem.CommonDataKeys;
import com.intellij.openapi.actionSystem.DataContext;
import com.intellij.openapi.actionSystem.LangDataKeys;
import com.intellij.psi.JavaDirectoryService;
import com.intellij.psi.PsiDirectory;
import com.intellij.psi.PsiFile;
import com.intellij.psi.PsiPackage;
import org.jetbrains.annotations.Nullable;

public final class FilePackageMacro extends Macro {
  public String getName() {
    return "FilePackage";
  }

  public String getDescription() {
    return IdeBundle.message("macro.file.package");
  }

  public String expand(DataContext dataContext) {
    PsiPackage aPackage = getFilePackage(dataContext);
    if (aPackage == null) return null;
    return aPackage.getName();
  }

  @Nullable
  static PsiPackage getFilePackage(DataContext dataContext) {
    PsiFile psiFile = CommonDataKeys.PSI_FILE.getData(dataContext);
    if (psiFile == null) return null;
    PsiDirectory containingDirectory = psiFile.getContainingDirectory();
    if (containingDirectory == null || !containingDirectory.isValid()) return null;
    return JavaDirectoryService.getInstance().getPackage(containingDirectory);
  }
}