plugins/Copyright/src/com/maddyhome/idea/copyright/util/NewFileTracker.java

   1 /*
   2  *  Copyright 2000-2007 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
  17 package com.maddyhome.idea.copyright.util;
  18
  19 import com.intellij.openapi.vfs.VirtualFile;
  20 import com.intellij.openapi.vfs.VirtualFileAdapter;
  21 import com.intellij.openapi.vfs.VirtualFileEvent;
  22 import com.intellij.openapi.vfs.VirtualFileManager;
  23
  24 import java.util.HashSet;
  25 import java.util.Set;
  26
  27 public class NewFileTracker
  28 {
  29     public static NewFileTracker getInstance()
  30     {
  31         return instance;
  32     }
  33
  34     public boolean contains(VirtualFile file)
  35     {
  36         synchronized (newfiles)
  37         {
  38             return newfiles.contains(file);
  39         }
  40     }
  41
  42     public void remove(VirtualFile file)
  43     {
  44         synchronized (newfiles)
  45         {
  46             newfiles.remove(file);
  47         }
  48     }
  49
  50     private NewFileTracker()
  51     {
  52         VirtualFileManager manager = VirtualFileManager.getInstance();
  53         manager.addVirtualFileListener(new VirtualFileAdapter()
  54         {
  55             public void fileCreated(VirtualFileEvent event)
  56             {
  57                 synchronized (newfiles)
  58                 {
  59                     newfiles.add(event.getFile());
  60                 }
  61             }
  62         });
  63     }
  64
  65     private Set<VirtualFile> newfiles = new HashSet<VirtualFile>();
  66
  67     private static NewFileTracker instance = new NewFileTracker();
  68 }