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

   1 /*
   2  * Copyright 2000-2009 JetBrains s.r.o.
   3  *
   4  * Licensed under the Apache License, Version 2.0 (the "License");
   5  * you may not use this file except in compliance with the License.
   6  * You may obtain a copy of the License at
   7  *
   8  * http://www.apache.org/licenses/LICENSE-2.0
   9  *
  10  * Unless required by applicable law or agreed to in writing, software
  11  * distributed under the License is distributed on an "AS IS" BASIS,
  12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13  * See the License for the specific language governing permissions and
  14  * limitations under the License.
  15  */
  16 package com.intellij.ide.macro;
  17
  18 import com.intellij.ide.IdeBundle;
  19 import com.intellij.openapi.actionSystem.DataContext;
  20 import com.intellij.openapi.actionSystem.DataKeys;
  21 import com.intellij.psi.JavaDirectoryService;
  22 import com.intellij.psi.PsiDirectory;
  23 import com.intellij.psi.PsiFile;
  24 import com.intellij.psi.PsiPackage;
  25 import org.jetbrains.annotations.Nullable;
  26
  27 public final class FilePackageMacro extends Macro {
  28   public String getName() {
  29     return "FilePackage";
  30   }
  31
  32   public String getDescription() {
  33     return IdeBundle.message("macro.file.package");
  34   }
  35
  36   public String expand(DataContext dataContext) {
  37     PsiPackage aPackage = getFilePackage(dataContext);
  38     if (aPackage == null) return null;
  39     return aPackage.getName();
  40   }
  41
  42   @Nullable
  43   static PsiPackage getFilePackage(DataContext dataContext) {
  44     PsiFile psiFile = DataKeys.PSI_FILE.getData(dataContext);
  45     if (psiFile == null) return null;
  46     PsiDirectory containingDirectory = psiFile.getContainingDirectory();
  47     if (containingDirectory == null || !containingDirectory.isValid()) return null;
  48     return JavaDirectoryService.getInstance().getPackage(containingDirectory);
  49   }
  50 }