java/java-impl/src/com/intellij/psi/impl/smartPointers/ImportListElementInfoFactory.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.psi.impl.smartPointers;
  17
  18 import org.jetbrains.annotations.Nullable;
  19 import com.intellij.psi.PsiElement;
  20 import com.intellij.psi.PsiJavaFile;
  21 import com.intellij.psi.PsiImportList;
  22 import com.intellij.openapi.editor.Document;
  23
  24 public class ImportListElementInfoFactory implements SmartPointerElementInfoFactory {
  25   @Nullable
  26   public SmartPointerElementInfo createElementInfo(final PsiElement element) {
  27     if (element instanceof PsiImportList) {
  28       return new ImportListInfo((PsiJavaFile)element.getContainingFile());
  29     }
  30     return null;
  31   }
  32
  33   private static class ImportListInfo implements SmartPointerElementInfo {
  34     private final PsiJavaFile myFile;
  35
  36     public ImportListInfo(PsiJavaFile file) {
  37       myFile = file;
  38     }
  39
  40     public PsiElement restoreElement() {
  41       if (!myFile.isValid()) return null;
  42       return myFile.getImportList();
  43     }
  44
  45     public Document getDocumentToSynchronize() {
  46       return null;
  47     }
  48
  49     public void documentAndPsiInSync() {
  50     }
  51   }
  52 }