plugins/maven/src/main/java/org/jetbrains/idea/maven/vfs/MavenPropertiesVirtualFileSystem.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 org.jetbrains.idea.maven.vfs;
  17
  18 import com.intellij.openapi.application.ApplicationManager;
  19 import com.intellij.openapi.components.ApplicationComponent;
  20 import com.intellij.openapi.vfs.VirtualFile;
  21 import com.intellij.openapi.vfs.ex.dummy.DummyFileSystem;
  22 import gnu.trove.THashMap;
  23 import org.jetbrains.annotations.NonNls;
  24 import org.jetbrains.annotations.NotNull;
  25 import org.jetbrains.annotations.Nullable;
  26 import org.jetbrains.idea.maven.utils.MavenUtil;
  27
  28 import java.util.Map;
  29
  30 public class MavenPropertiesVirtualFileSystem extends DummyFileSystem implements ApplicationComponent {
  31   @NonNls public static final String PROTOCOL = "maven-properties";
  32
  33   @NonNls public static final String SYSTEM_PROPERTIES_FILE = "System.properties";
  34   @NonNls public static final String ENV_PROPERTIES_FILE = "Environment.properties";
  35
  36   public static final String[] PROPERTIES_FILES = new String[] { SYSTEM_PROPERTIES_FILE, ENV_PROPERTIES_FILE };
  37
  38   private final Map<String, VirtualFile> myFiles = new THashMap<String, VirtualFile>();
  39
  40   public static MavenPropertiesVirtualFileSystem getInstance() {
  41     return ApplicationManager.getApplication().getComponent(MavenPropertiesVirtualFileSystem.class);
  42   }
  43
  44   @NotNull
  45   public String getComponentName() {
  46     return MavenPropertiesVirtualFileSystem.class.getName();
  47   }
  48
  49   public void initComponent() {
  50   }
  51
  52   public void disposeComponent() {
  53   }
  54
  55   @NotNull
  56   public String getProtocol() {
  57     return PROTOCOL;
  58   }
  59
  60   //@Override
  61   //public boolean isPhysical() {
  62   //  return false;
  63   //}
  64
  65   public synchronized VirtualFile findFileByPath(@NotNull @NonNls String path) {
  66     VirtualFile result = myFiles.get(path);
  67     if (result != null) return result;
  68
  69     result = createFile(path);
  70     if (result != null) {
  71       myFiles.put(path, result);
  72     }
  73     return result;
  74   }
  75
  76   @Nullable
  77   private VirtualFile createFile(String path) {
  78     if (SYSTEM_PROPERTIES_FILE.equals(path)) return new MavenPropertiesVirtualFile(path, MavenUtil.getSystemProperties(), this);
  79     if (ENV_PROPERTIES_FILE.equals(path)) return new MavenPropertiesVirtualFile(path, MavenUtil.getEnvProperties(), this);
  80     return null;
  81   }
  82
  83
  84   public void refresh(boolean asynchronous) {
  85   }
  86
  87   public VirtualFile refreshAndFindFileByPath(@NotNull String path) {
  88     return findFileByPath(path);
  89   }
  90
  91   //protected void deleteFile(Object requestor, VirtualFile vFile) throws IOException {
  92   //  throw new UnsupportedOperationException();
  93   //}
  94   //
  95   //protected void moveFile(Object requestor, VirtualFile vFile, VirtualFile newParent) throws IOException {
  96   //  throw new UnsupportedOperationException();
  97   //}
  98   //
  99   //protected void renameFile(Object requestor, VirtualFile vFile, String newName) throws IOException {
 100   //  throw new UnsupportedOperationException();
 101   //}
 102   //
 103   //protected VirtualFile createChildFile(Object requestor, VirtualFile vDir, String fileName) throws IOException {
 104   //  throw new UnsupportedOperationException();
 105   //}
 106   //
 107   //protected VirtualFile createChildDirectory(Object requestor, VirtualFile vDir, String dirName) throws IOException {
 108   //  throw new UnsupportedOperationException();
 109   //}
 110   //
 111   //protected VirtualFile copyFile(Object requestor, VirtualFile virtualFile, VirtualFile newParent, String copyName)
 112   //  throws IOException {
 113   //  throw new UnsupportedOperationException();
 114   //}
 115 }