| /* |
| * Copyright 2000-2013 JetBrains s.r.o. |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| package com.intellij.openapi.vcs.roots; |
| |
| import com.intellij.ProjectTopics; |
| import com.intellij.openapi.project.DumbAwareRunnable; |
| import com.intellij.openapi.project.Project; |
| import com.intellij.openapi.roots.ModuleRootEvent; |
| import com.intellij.openapi.roots.ModuleRootListener; |
| import com.intellij.openapi.startup.StartupManager; |
| import com.intellij.openapi.vcs.ProjectLevelVcsManager; |
| import com.intellij.openapi.vcs.VcsListener; |
| import com.intellij.openapi.vcs.VcsRootChecker; |
| import com.intellij.openapi.vfs.VirtualFileManager; |
| import com.intellij.openapi.vfs.newvfs.BulkFileListener; |
| import com.intellij.openapi.vfs.newvfs.events.VFileEvent; |
| import com.intellij.util.Alarm; |
| import com.intellij.util.messages.MessageBus; |
| import org.jetbrains.annotations.NotNull; |
| |
| import java.util.List; |
| import java.util.concurrent.TimeUnit; |
| |
| /** |
| * @author Nadya Zabrodina |
| */ |
| public class VcsRootScanner implements BulkFileListener, ModuleRootListener, VcsListener { |
| |
| @NotNull private final VcsRootProblemNotifier myRootProblemNotifier; |
| @NotNull private final VcsRootChecker[] myCheckers; |
| |
| private volatile boolean myProjectIsInitialized; |
| private volatile boolean myMappingsAreReady; |
| |
| @NotNull private final Alarm myAlarm; |
| private static final long WAIT_BEFORE_SCAN = TimeUnit.SECONDS.toMillis(1); |
| |
| public static void start(@NotNull Project project, @NotNull VcsRootChecker[] checkers) { |
| new VcsRootScanner(project, checkers); |
| } |
| |
| private VcsRootScanner(@NotNull Project project, @NotNull VcsRootChecker[] checkers) { |
| myRootProblemNotifier = VcsRootProblemNotifier.getInstance(project); |
| myCheckers = checkers; |
| |
| StartupManager.getInstance(project).runWhenProjectIsInitialized(new DumbAwareRunnable() { |
| @Override |
| public void run() { |
| myProjectIsInitialized = true; |
| scanIfReady(); |
| } |
| }); |
| |
| final MessageBus messageBus = project.getMessageBus(); |
| messageBus.connect().subscribe(ProjectLevelVcsManager.VCS_CONFIGURATION_CHANGED, this); |
| messageBus.connect().subscribe(VirtualFileManager.VFS_CHANGES, this); |
| messageBus.connect().subscribe(ProjectTopics.PROJECT_ROOTS, this); |
| |
| myAlarm = new Alarm(Alarm.ThreadToUse.POOLED_THREAD, project); |
| } |
| |
| @Override |
| public void before(@NotNull List<? extends VFileEvent> events) { |
| } |
| |
| @Override |
| public void after(@NotNull List<? extends VFileEvent> events) { |
| for (VFileEvent event : events) { |
| String filePath = event.getPath(); |
| for (VcsRootChecker checker : myCheckers) { |
| if (checker.isVcsDir(filePath)) { |
| scanIfReady(); |
| break; |
| } |
| } |
| } |
| } |
| |
| @Override |
| public void beforeRootsChange(ModuleRootEvent event) { |
| } |
| |
| @Override |
| public void rootsChanged(ModuleRootEvent event) { |
| scanIfReady(); |
| } |
| |
| @Override |
| public void directoryMappingChanged() { |
| myMappingsAreReady = true; |
| scanIfReady(); |
| } |
| |
| private void scanIfReady() { |
| if (readyToScan()) { |
| scheduleScan(); |
| } |
| } |
| |
| private boolean readyToScan() { |
| return myMappingsAreReady && myProjectIsInitialized; |
| } |
| |
| private void scheduleScan() { |
| if (myAlarm.isDisposed()) { |
| return; |
| } |
| |
| myAlarm.cancelAllRequests(); // one scan is enough, no need to queue, they all do the same |
| myAlarm.addRequest(new Runnable() { |
| @Override |
| public void run() { |
| myRootProblemNotifier.rescanAndNotifyIfNeeded(); |
| } |
| }, WAIT_BEFORE_SCAN); |
| } |
| } |