import com.intellij.openapi.vfs.newvfs.events.VFilePropertyChangeEvent; //导入依赖的package包/类
/**
 * Forces a reparse of the specified collection of files.
 *
 * @param files the files to reparse.
 */
public static void reparseFiles(@NotNull final Collection<VirtualFile> files) {
  ApplicationManager.getApplication().runWriteAction(new Runnable() {
    @Override
    public void run() {
      // files must be processed under one write action to prevent firing event for invalid files.
      final Set<VFilePropertyChangeEvent> events = new THashSet<VFilePropertyChangeEvent>();
      for (VirtualFile file : files) {
        saveOrReload(file, events);
      }

      BulkFileListener publisher = ApplicationManager.getApplication().getMessageBus().syncPublisher(VirtualFileManager.VFS_CHANGES);
      List<VFileEvent> eventList = new ArrayList<VFileEvent>(events);
      publisher.before(eventList);
      publisher.after(eventList);
    }
  });
}
 

import com.intellij.openapi.vfs.newvfs.events.VFilePropertyChangeEvent; //导入依赖的package包/类
@Override
public void notifyPropertyChanged(@NotNull final VirtualFile virtualFile, @NotNull final String property, final Object oldValue, final Object newValue) {
  final Application application = ApplicationManager.getApplication();
  final Runnable runnable = new Runnable() {
    @Override
    public void run() {
      if (virtualFile.isValid() && !application.isDisposed()) {
        application.runWriteAction(new Runnable() {
          @Override
          public void run() {
            List<VFilePropertyChangeEvent> events = Collections
              .singletonList(new VFilePropertyChangeEvent(this, virtualFile, property, oldValue, newValue, false));
            BulkFileListener listener = application.getMessageBus().syncPublisher(VirtualFileManager.VFS_CHANGES);
            listener.before(events);
            listener.after(events);
          }
        });
      }
    }
  };
  application.invokeLater(runnable, ModalityState.NON_MODAL);
}
 

import com.intellij.openapi.vfs.newvfs.events.VFilePropertyChangeEvent; //导入依赖的package包/类
public static void reparseFiles(@NotNull final Collection<VirtualFile> files) {
  ApplicationManager.getApplication().runWriteAction(new Runnable() {
    @Override
    public void run() {
      // files must be processed under one write action to prevent firing event for invalid files.

      final Set<VFilePropertyChangeEvent> events = new THashSet<VFilePropertyChangeEvent>();
      for (VirtualFile file : files) {
        saveOrReload(file, events);
      }

      ApplicationManager.getApplication().getMessageBus().syncPublisher(VirtualFileManager.VFS_CHANGES)
        .before(new ArrayList<VFileEvent>(events));
      ApplicationManager.getApplication().getMessageBus().syncPublisher(VirtualFileManager.VFS_CHANGES)
        .after(new ArrayList<VFileEvent>(events));
    }
  });
}
 

import com.intellij.openapi.vfs.newvfs.events.VFilePropertyChangeEvent; //导入依赖的package包/类
@Override
public void notifyPropertyChanged(final VirtualFile virtualFile, final String property, final Object oldValue, final Object newValue) {
  final Application application = ApplicationManager.getApplication();
  final Runnable runnable = new Runnable() {
    @Override
    public void run() {
      if (virtualFile.isValid() && !application.isDisposed()) {
        application.runWriteAction(new Runnable() {
          @Override
          public void run() {
            List<VFilePropertyChangeEvent> events = Collections
              .singletonList(new VFilePropertyChangeEvent(this, virtualFile, property, oldValue, newValue, false));
            BulkFileListener listener = application.getMessageBus().syncPublisher(VirtualFileManager.VFS_CHANGES);
            listener.before(events);
            listener.after(events);
          }
        });
      }
    }
  };
  application.invokeLater(runnable, ModalityState.NON_MODAL);
}
 

import com.intellij.openapi.vfs.newvfs.events.VFilePropertyChangeEvent; //导入依赖的package包/类
/**
 * Internal handler for file delete, move and rename events
 * @param event IntelliJ's file change event
 * @throws CmsConnectionException if the connection to OpenCms fails
 */
private void handleFileEvent(VFileEvent event) throws CmsConnectionException {
	// File is deleted
	if (event instanceof VFileDeleteEvent) {
		handleFileDeleteEvent(event);
	}
	// File is moved
	if (event instanceof VFileMoveEvent) {
		handleFileMoveEvent(event);
	}

	// File is renamed
	if (event instanceof VFilePropertyChangeEvent) {
		String propertyName = ((VFilePropertyChangeEvent)event).getPropertyName();
		if ("name".equals(propertyName)) {
			handleFileRenameEvent(event);
		}
	}
}
 

import com.intellij.openapi.vfs.newvfs.events.VFilePropertyChangeEvent; //导入依赖的package包/类
/**
 * Internal handler for file rename events fills a list of files to be renamed that is handled later in
 * {@link OpenCmsModuleFileChangeHandler#handleChanges()}
 * @param event IntelliJ's file change event
 * @throws CmsConnectionException if the connection to OpenCms fails
 */
private void handleFileRenameEvent(VFileEvent event) throws CmsConnectionException {
	VirtualFile ideaVFile = event.getFile();
	if (ideaVFile != null) {
		String renameFilePath = ideaVFile.getPath();
		OpenCmsModule ocmsModule = openCmsModules.getModuleForPath(renameFilePath);
		if (ocmsModule != null) {
			LOG.debug("The following file was renamed: " + ideaVFile.getPath());
			String oldName = (String)((VFilePropertyChangeEvent)event).getOldValue();
			String newName = (String)((VFilePropertyChangeEvent)event).getNewValue();
			String newVfsPath = ocmsModule.getVfsPathForRealPath(renameFilePath);
			String oldVfsPath = newVfsPath.replaceFirst(newName, oldName);

			if (!oldVfsPath.equals(newVfsPath) && ocmsModule.isPathModuleResource(ocmsModule.getLocalVfsRoot() + oldVfsPath) && getVfsAdapter().exists(oldVfsPath)) {
				changeHandler.addFileToBeRenamed(ocmsModule, ideaVFile, oldVfsPath, newVfsPath, newName);
			}
		}
	}
}
 

import com.intellij.openapi.vfs.newvfs.events.VFilePropertyChangeEvent; //导入依赖的package包/类
@RequiredDispatchThread
public static void reparseFiles(@Nonnull final Collection<VirtualFile> files) {
  ApplicationManager.getApplication().runWriteAction(new Runnable() {
    @Override
    public void run() {
      // files must be processed under one write action to prevent firing event for invalid files.
      final Set<VFilePropertyChangeEvent> events = new THashSet<VFilePropertyChangeEvent>();
      for (VirtualFile file : files) {
        saveOrReload(file, events);
      }

      BulkFileListener publisher = ApplicationManager.getApplication().getMessageBus().syncPublisher(VirtualFileManager.VFS_CHANGES);
      List<VFileEvent> eventList = new ArrayList<VFileEvent>(events);
      publisher.before(eventList);
      publisher.after(eventList);
    }
  });
}
 

import com.intellij.openapi.vfs.newvfs.events.VFilePropertyChangeEvent; //导入依赖的package包/类
@RequiredWriteAction
private static void saveOrReload(VirtualFile file, @Nonnull Collection<VFilePropertyChangeEvent> events) {
  if (file == null || file.isDirectory() || !file.isValid()) {
    return;
  }

  FileDocumentManager documentManager = FileDocumentManager.getInstance();
  if (documentManager.isFileModified(file)) {
    Document document = documentManager.getDocument(file);
    if (document != null) {
      documentManager.saveDocument(document);
    }
  }

  events.add(new VFilePropertyChangeEvent(FORCE_RELOAD_REQUESTOR, file, VirtualFile.PROP_NAME, file.getName(), file.getName(), false));
}
 

import com.intellij.openapi.vfs.newvfs.events.VFilePropertyChangeEvent; //导入依赖的package包/类
@Override
public void notifyPropertyChanged(@Nonnull final VirtualFile virtualFile, @Nonnull final String property, final Object oldValue, final Object newValue) {
  final Application application = ApplicationManager.getApplication();
  final Runnable runnable = new Runnable() {
    @Override
    public void run() {
      if (virtualFile.isValid() && !application.isDisposed()) {
        application.runWriteAction(new Runnable() {
          @Override
          public void run() {
            List<VFilePropertyChangeEvent> events = Collections
                    .singletonList(new VFilePropertyChangeEvent(this, virtualFile, property, oldValue, newValue, false));
            BulkFileListener listener = application.getMessageBus().syncPublisher(VirtualFileManager.VFS_CHANGES);
            listener.before(events);
            listener.after(events);
          }
        });
      }
    }
  };
  application.invokeLater(runnable, ModalityState.NON_MODAL);
}
 

import com.intellij.openapi.vfs.newvfs.events.VFilePropertyChangeEvent; //导入依赖的package包/类
public GistManagerImpl() {
  ApplicationManager.getApplication().getMessageBus().connect().subscribe(VirtualFileManager.VFS_CHANGES, new BulkFileListener.Adapter() {
    @Override
    public void after(@Nonnull List<? extends VFileEvent> events) {
      if (events.stream().anyMatch(this::shouldDropCache)) {
        invalidateData();
      }
    }

    private boolean shouldDropCache(VFileEvent e) {
      if (!(e instanceof VFilePropertyChangeEvent)) return false;

      String propertyName = ((VFilePropertyChangeEvent)e).getPropertyName();
      return propertyName.equals(VirtualFile.PROP_NAME) || propertyName.equals(VirtualFile.PROP_ENCODING);
    }
  });
}
 

import com.intellij.openapi.vfs.newvfs.events.VFilePropertyChangeEvent; //导入依赖的package包/类
public VirtualFilePropertyEvent(Object requestor, @NotNull VirtualFile file, @NotNull String propertyName, Object oldValue, Object newValue){
  super(requestor, file, file.getName(), file.getParent());
  myPropertyName = propertyName;
  myOldValue = oldValue;
  myNewValue = newValue;
  VFilePropertyChangeEvent.checkPropertyValuesCorrect(requestor, propertyName, oldValue, newValue);
}
 

import com.intellij.openapi.vfs.newvfs.events.VFilePropertyChangeEvent; //导入依赖的package包/类
private static void saveOrReload(VirtualFile file, @NotNull Collection<VFilePropertyChangeEvent> events) {
  if (file == null || file.isDirectory() || !file.isValid()) {
    return;
  }

  FileDocumentManager documentManager = FileDocumentManager.getInstance();
  if (documentManager.isFileModified(file)) {
    Document document = documentManager.getDocument(file);
    if (document != null) {
      documentManager.saveDocumentAsIs(document); // this can be called e.g. in context of undo, so we shouldn't modify document
    }
  }

  events.add(new VFilePropertyChangeEvent(FORCE_RELOAD_REQUESTOR, file, VirtualFile.PROP_NAME, file.getName(), file.getName(), false));
}
 

import com.intellij.openapi.vfs.newvfs.events.VFilePropertyChangeEvent; //导入依赖的package包/类
@Override
public void after(List<? extends VFileEvent> events) {
  if (!enabled) {
    return;
  }
  for (VFileEvent event : events) {
    VirtualFile modifiedFile = null;
    // Skip delete events.
    if (event instanceof VFileContentChangeEvent || event instanceof VFileCreateEvent) {
      modifiedFile = event.getFile();
    } else if (event instanceof VFileCopyEvent) {
      VFileCopyEvent copyEvent = (VFileCopyEvent) event;
      modifiedFile = copyEvent.getNewParent();
    } else if (event instanceof VFileMoveEvent) {
      VFileMoveEvent moveEvent = (VFileMoveEvent) event;
      modifiedFile = moveEvent.getNewParent();
    } else if (event instanceof VFilePropertyChangeEvent) {
      VFilePropertyChangeEvent propEvent = (VFilePropertyChangeEvent) event;
      // Check for file renames (sometimes we get property change events without the name
      // actually changing though)
      if (propEvent.getPropertyName().equals(VirtualFile.PROP_NAME)
          && !propEvent.getOldValue().equals(propEvent.getNewValue())) {
        modifiedFile = propEvent.getFile();
      }
    }
    if (SymbolTableProvider.isSourceFile(modifiedFile)) {
      queueChange(modifiedFile);
    }
  }
}
 

import com.intellij.openapi.vfs.newvfs.events.VFilePropertyChangeEvent; //导入依赖的package包/类
private static void saveOrReload(final VirtualFile virtualFile, Collection<VFilePropertyChangeEvent> events) {
  if (virtualFile == null || virtualFile.isDirectory() || !virtualFile.isValid()) {
    return;
  }
  final FileDocumentManager documentManager = FileDocumentManager.getInstance();
  if (documentManager.isFileModified(virtualFile)) {
    Document document = documentManager.getDocument(virtualFile);
    if (document != null) {
      documentManager.saveDocument(document);
    }
  }
  events.add(
    new VFilePropertyChangeEvent(FORCE_RELOAD_REQUESTOR, virtualFile, VirtualFile.PROP_NAME, virtualFile.getName(), virtualFile.getName(),
                                 false));
}
 

import com.intellij.openapi.vfs.newvfs.events.VFilePropertyChangeEvent; //导入依赖的package包/类
private boolean isMoveOrRename( VFileEvent event )
{
  return event instanceof VFilePropertyChangeEvent && ((VFilePropertyChangeEvent)event).getPropertyName().equals( VirtualFile.PROP_NAME ) ||
         event instanceof VFileMoveEvent;
}
 

import com.intellij.openapi.vfs.newvfs.events.VFilePropertyChangeEvent; //导入依赖的package包/类
private static void checkSubscription() {
  if (ourSubscribed.getAndSet(true)) return;

  Application app = ApplicationManager.getApplication();
  app.getMessageBus().connect(app).subscribe(VirtualFileManager.VFS_CHANGES, new BulkFileListener.Adapter() {
    @Override
    public void after(@NotNull List<? extends VFileEvent> events) {
      InvalidationState state = null;

      synchronized (ourLock) {
        for (VFileEvent event : events) {
          if (!(event.getFileSystem() instanceof LocalFileSystem)) continue;

          if (event instanceof VFileCreateEvent) continue; // created file should not invalidate + getFile is costly

          if (event instanceof VFilePropertyChangeEvent &&
              !VirtualFile.PROP_NAME.equals(((VFilePropertyChangeEvent)event).getPropertyName())) {
            continue;
          }

          String path = event.getPath();
          if (event instanceof VFilePropertyChangeEvent) {
            path = ((VFilePropertyChangeEvent)event).getOldPath();
          }
          else if (event instanceof VFileMoveEvent) {
            path = ((VFileMoveEvent)event).getOldPath();
          }

          VirtualFile file = event.getFile();
          if (file == null || !file.isDirectory()) {
            state = InvalidationState.invalidate(state, path);
          }
          else {
            Collection<String> affectedPaths = ourDominatorsMap.get(path);
            if (affectedPaths != null) {
              affectedPaths = ContainerUtil.newArrayList(affectedPaths);  // defensive copying; original may be updated on invalidation
              for (String affectedPath : affectedPaths) {
                state = InvalidationState.invalidate(state, affectedPath);
              }
            }
          }
        }
      }

      if (state != null) state.scheduleRefresh();
    }
  });
}
 

import com.intellij.openapi.vfs.newvfs.events.VFilePropertyChangeEvent; //导入依赖的package包/类
/**
 * This gets called on all file system changes, but we're interested in changes to module root directories. When we see them, we'll update
 * the settings.gradle file. Note that users can also refactor modules by renaming them, which just changes their display name and not
 * the filesystem directory -- when that happens, this class gets a
 * {@link ModuleAdapter#modulesRenamed(com.intellij.openapi.project.Project, java.util.List)} callback. However, it's not appropriate to
 * update settings.gradle in that case since Gradle doesn't case about IJ's display name of the module.
 */
@Override
public void after(@NotNull List<? extends VFileEvent> events) {
  for (VFileEvent event : events) {
    if (!(event instanceof VFilePropertyChangeEvent)) {
      continue;
    }
    VFilePropertyChangeEvent propChangeEvent = (VFilePropertyChangeEvent)event;
    if (!(VirtualFile.PROP_NAME.equals(propChangeEvent.getPropertyName()))) {
      continue;
    }

    VirtualFile eventFile = propChangeEvent.getFile();
    if (!eventFile.isDirectory()) {
      continue;
    }

    // Dig through our modules and find the one that matches the change event's path (the module will already have its path updated by
    // now).
    Module module = null;
    Module[] modules = ModuleManager.getInstance(myProject).getModules();
    for (Module m : modules) {
      VirtualFile file = GradleUtil.getGradleBuildFile(m);
      if (file != null) {
        VirtualFile moduleDir = file.getParent();
        if (moduleDir != null && FileUtil.pathsEqual(eventFile.getPath(), moduleDir.getPath())) {
          module = m;
          break;
        }
      }
    }

    // If we found the module, then remove the old reference from the settings.gradle file and put in a new one.
    if (module != null) {
      AndroidGradleFacet androidGradleFacet = AndroidGradleFacet.getInstance(module);
      if (androidGradleFacet == null) {
        continue;
      }
      String oldPath = androidGradleFacet.getConfiguration().GRADLE_PROJECT_PATH;
      String newPath = updateProjectNameInGradlePath(androidGradleFacet, eventFile);

      if (oldPath.equals(newPath)) {
        continue;
      }

      GradleSettingsFile settingsFile = GradleSettingsFile.get(myProject);
      if (settingsFile != null) {
        settingsFile.removeModule(oldPath);
        settingsFile.addModule(newPath, VfsUtilCore.virtualToIoFile(eventFile));
      }
    }
  }
}
 

import com.intellij.openapi.vfs.newvfs.events.VFilePropertyChangeEvent; //导入依赖的package包/类
public static void execute(final PsiElement element, final String newName, final UsageInfo[] usages,
                           @Nullable final RefactoringElementListener listener) throws IncorrectOperationException {
    try {
        final VirtualFile virtualFile;
        if (element instanceof PsiFile) {
            logger.info("Renaming file...");
            virtualFile = ((PsiFile) element).getVirtualFile();
        } else if (element instanceof PsiDirectory) {
            logger.info("Renaming directory...");
            virtualFile = ((PsiDirectory) element).getVirtualFile();
        } else {
            // should never reach here since we check if file/directory before making a rename
            logger.warn("RenameFile: failed to find proper object to rename: " + element.getClass());
            throw new IncorrectOperationException("Can't perform rename on objects other than files and directories");
        }

        final String currentPath = virtualFile.getPath();
        final String parentDirectory = virtualFile.getParent().getPath();
        final String newPath = Path.combine(parentDirectory, newName);
        final Project project = element.getProject();

        // a single file may have 0, 1, or 2 pending changes to it
        // 0 - file has not been touched in the local workspace
        // 1 - file has versioned OR unversioned changes
        // 2 - file has versioned AND unversioned changes (rare but can happen)
        final List<PendingChange> pendingChanges = new ArrayList<PendingChange>(2);
        pendingChanges.addAll(CommandUtils.getStatusForFiles(TFSVcs.getInstance(project).getServerContext(true),
                ImmutableList.of(currentPath)));

        // ** Rename logic **
        // If 1 change and it's an add that means it's a new unversioned file so rename thru the file system
        // Anything else can be renamed
        // Deleted files should not be at this point since IDE disables rename option for them
        if (pendingChanges.size() == 1 && pendingChanges.get(0).getChangeTypes().contains(ServerStatusType.ADD)) {
            logger.info("Renaming unversioned file thru file system");
            RenameUtil.doRenameGenericNamedElement(element, newName, usages, listener);
        } else {
            logger.info("Renaming file thru tf commandline");
            CommandUtils.renameFile(TFSVcs.getInstance(project).getServerContext(true), currentPath, newPath);

            // this alerts that a rename has taken place so any additional processing can take place
            final VFileEvent event = new VFilePropertyChangeEvent(element.getManager(), virtualFile, "name", currentPath, newName, false);
            PersistentFS.getInstance().processEvents(Collections.singletonList(event));
        }
    } catch (Throwable t) {
        logger.warn("renameElement experienced a failure while trying to rename a file", t);
        throw new IncorrectOperationException(t);
    }

    if (listener != null) {
        listener.elementRenamed(element);
    }
}
 

import com.intellij.openapi.vfs.newvfs.events.VFilePropertyChangeEvent; //导入依赖的package包/类
private static void checkSubscription() {
  if (ourSubscribed.getAndSet(true)) return;

  Application app = ApplicationManager.getApplication();
  app.getMessageBus().connect(app).subscribe(VirtualFileManager.VFS_CHANGES, new BulkFileListener.Adapter() {
    @Override
    public void after(@Nonnull List<? extends VFileEvent> events) {
      InvalidationState state = null;

      synchronized (ourLock) {
        for (VFileEvent event : events) {
          if (!(event.getFileSystem() instanceof LocalFileSystem)) continue;

          if (event instanceof VFileCreateEvent) continue; // created file should not invalidate + getFile is costly

          if (event instanceof VFilePropertyChangeEvent && !VirtualFile.PROP_NAME.equals(((VFilePropertyChangeEvent)event).getPropertyName())) {
            continue;
          }

          String path = event.getPath();
          if (event instanceof VFilePropertyChangeEvent) {
            path = ((VFilePropertyChangeEvent)event).getOldPath();
          }
          else if (event instanceof VFileMoveEvent) {
            path = ((VFileMoveEvent)event).getOldPath();
          }

          VirtualFile file = event.getFile();
          if (file == null || !file.isDirectory()) {
            state = InvalidationState.invalidate(state, path);
          }
          else {
            Collection<String> affectedPaths = ourDominatorsMap.get(path);
            if (affectedPaths != null) {
              affectedPaths = ContainerUtil.newArrayList(affectedPaths);  // defensive copying; original may be updated on invalidation
              for (String affectedPath : affectedPaths) {
                state = InvalidationState.invalidate(state, affectedPath);
              }
            }
          }
        }
      }

      if (state != null) state.scheduleRefresh();
    }
  });
}