java/java-impl/src/com/intellij/ide/JavaDataAccessors.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;
  17
  18 import com.intellij.psi.*;
  19 import com.intellij.openapi.actionSystem.DataContext;
  20
  21 public class JavaDataAccessors {
  22   public static final DataAccessor<PsiPackage> FILE_PACKAGE = new DataAccessor<PsiPackage>() {
  23     public PsiPackage getImpl(DataContext dataContext) throws NoDataException {
  24       PsiFile psiFile = DataAccessors.PSI_FILE.getNotNull(dataContext);
  25       PsiDirectory containingDirectory = psiFile.getContainingDirectory();
  26       if (containingDirectory == null || !containingDirectory.isValid()) return null;
  27       return JavaDirectoryService.getInstance().getPackage(containingDirectory);
  28     }
  29   };
  30   public static final DataAccessor<PsiJavaFile> PSI_JAVA_FILE = DataAccessor.SubClassDataAccessor.create(DataAccessors.PSI_FILE, PsiJavaFile.class);
  31
  32   private JavaDataAccessors() {
  33   }
  34 }