src/chrome/browser/chromeos/extensions/file_manager/event_router.h

   1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef CHROME_BROWSER_CHROMEOS_EXTENSIONS_FILE_MANAGER_EVENT_ROUTER_H_
   6 #define CHROME_BROWSER_CHROMEOS_EXTENSIONS_FILE_MANAGER_EVENT_ROUTER_H_
   7
   8 #include <map>
   9 #include <string>
  10
  11 #include "base/basictypes.h"
  12 #include "base/compiler_specific.h"
  13 #include "base/files/file_path_watcher.h"
  14 #include "base/memory/scoped_ptr.h"
  15 #include "chrome/browser/chromeos/drive/drive_integration_service.h"
  16 #include "chrome/browser/chromeos/drive/file_system_observer.h"
  17 #include "chrome/browser/chromeos/drive/job_list.h"
  18 #include "chrome/browser/chromeos/drive/sync_client.h"
  19 #include "chrome/browser/chromeos/file_manager/file_watcher.h"
  20 #include "chrome/browser/chromeos/file_manager/fileapi_util.h"
  21 #include "chrome/browser/chromeos/file_manager/volume_manager.h"
  22 #include "chrome/browser/chromeos/file_manager/volume_manager_observer.h"
  23 #include "chrome/browser/drive/drive_service_interface.h"
  24 #include "chrome/browser/ui/ash/multi_user/multi_user_window_manager.h"
  25 #include "chrome/common/extensions/api/file_browser_private.h"
  26 #include "chromeos/disks/disk_mount_manager.h"
  27 #include "chromeos/network/network_state_handler_observer.h"
  28 #include "content/public/browser/notification_observer.h"
  29 #include "content/public/browser/notification_registrar.h"
  30 #include "webkit/browser/fileapi/file_system_operation.h"
  31
  32 class PrefChangeRegistrar;
  33 class Profile;
  34
  35 using file_manager::util::EntryDefinition;
  36
  37 namespace base {
  38 class ListValue;
  39 }
  40
  41 namespace chromeos {
  42 class NetworkState;
  43 }
  44
  45 namespace file_manager {
  46
  47 // Monitors changes in disk mounts, network connection state and preferences
  48 // affecting File Manager. Dispatches appropriate File Browser events.
  49 class EventRouter
  50     : public chromeos::NetworkStateHandlerObserver,
  51       public drive::FileSystemObserver,
  52       public drive::JobListObserver,
  53       public drive::DriveServiceObserver,
  54       public VolumeManagerObserver,
  55       public content::NotificationObserver,
  56       public chrome::MultiUserWindowManager::Observer {
  57  public:
  58   explicit EventRouter(Profile* profile);
  59   virtual ~EventRouter();
  60
  61   void Shutdown();
  62
  63   // Starts observing file system change events.
  64   void ObserveEvents();
  65
  66   typedef base::Callback<void(bool success)> BoolCallback;
  67
  68   // Adds a file watch at |local_path|, associated with |virtual_path|, for
  69   // an extension with |extension_id|.
  70   //
  71   // |callback| will be called with true on success, or false on failure.
  72   // |callback| must not be null.
  73   void AddFileWatch(const base::FilePath& local_path,
  74                     const base::FilePath& virtual_path,
  75                     const std::string& extension_id,
  76                     const BoolCallback& callback);
  77
  78   // Removes a file watch at |local_path| for an extension with |extension_id|.
  79   void RemoveFileWatch(const base::FilePath& local_path,
  80                        const std::string& extension_id);
  81
  82   // Called when a copy task is completed.
  83   void OnCopyCompleted(
  84       int copy_id, const GURL& source_url, const GURL& destination_url,
  85       base::File::Error error);
  86
  87   // Called when a copy task progress is updated.
  88   void OnCopyProgress(int copy_id,
  89                       fileapi::FileSystemOperation::CopyProgressType type,
  90                       const GURL& source_url,
  91                       const GURL& destination_url,
  92                       int64 size);
  93
  94   // Register observer to the multi user window manager.
  95   void RegisterMultiUserWindowManagerObserver();
  96
  97   // chromeos::NetworkStateHandlerObserver overrides.
  98   virtual void DefaultNetworkChanged(
  99       const chromeos::NetworkState* network) OVERRIDE;
 100
 101   // drive::JobListObserver overrides.
 102   virtual void OnJobAdded(const drive::JobInfo& job_info) OVERRIDE;
 103   virtual void OnJobUpdated(const drive::JobInfo& job_info) OVERRIDE;
 104   virtual void OnJobDone(const drive::JobInfo& job_info,
 105                          drive::FileError error) OVERRIDE;
 106
 107   // drive::DriveServiceObserver overrides.
 108   virtual void OnRefreshTokenInvalid() OVERRIDE;
 109
 110   // drive::FileSystemObserver overrides.
 111   virtual void OnDirectoryChanged(const base::FilePath& drive_path) OVERRIDE;
 112   virtual void OnDriveSyncError(drive::file_system::DriveSyncErrorType type,
 113                                 const base::FilePath& drive_path) OVERRIDE;
 114
 115   // VolumeManagerObserver overrides.
 116   virtual void OnDiskAdded(
 117       const chromeos::disks::DiskMountManager::Disk& disk,
 118       bool mounting) OVERRIDE;
 119   virtual void OnDiskRemoved(
 120       const chromeos::disks::DiskMountManager::Disk& disk) OVERRIDE;
 121   virtual void OnDeviceAdded(const std::string& device_path) OVERRIDE;
 122   virtual void OnDeviceRemoved(const std::string& device_path,
 123                                bool hard_unplugged) OVERRIDE;
 124   virtual void OnVolumeMounted(chromeos::MountError error_code,
 125                                const VolumeInfo& volume_info,
 126                                bool is_remounting) OVERRIDE;
 127   virtual void OnVolumeUnmounted(chromeos::MountError error_code,
 128                                  const VolumeInfo& volume_info) OVERRIDE;
 129   virtual void OnFormatStarted(
 130       const std::string& device_path, bool success) OVERRIDE;
 131   virtual void OnFormatCompleted(
 132       const std::string& device_path, bool success) OVERRIDE;
 133
 134   // content::NotificationObserver overrides.
 135   virtual void Observe(int type,
 136                        const content::NotificationSource& source,
 137                        const content::NotificationDetails& details) OVERRIDE;
 138
 139   // chrome::MultiUserWindowManager::Observer overrides:
 140   virtual void OnOwnerEntryChanged(aura::Window* window) OVERRIDE;
 141
 142  private:
 143   typedef std::map<base::FilePath, FileWatcher*> WatcherMap;
 144
 145   // Called when prefs related to file manager change.
 146   void OnFileManagerPrefsChanged();
 147
 148   // Process file watch notifications.
 149   void HandleFileWatchNotification(const base::FilePath& path,
 150                                    bool got_error);
 151
 152   // Sends directory change event.
 153   void DispatchDirectoryChangeEvent(
 154       const base::FilePath& path,
 155       bool error,
 156       const std::vector<std::string>& extension_ids);
 157
 158   // Sends directory change event, after converting the file definition to entry
 159   // definition.
 160   void DispatchDirectoryChangeEventWithEntryDefinition(
 161       bool watcher_error,
 162       const EntryDefinition& entry_definition);
 163
 164   // If needed, opens a file manager window for the removable device mounted at
 165   // |mount_path|. Disk.mount_path() is empty, since it is being filled out
 166   // after calling notifying observers by DiskMountManager.
 167   void ShowRemovableDeviceInFileManager(VolumeType type,
 168                                         const base::FilePath& mount_path);
 169
 170   // Dispatches an onDeviceChanged event containing |type| and |path| to
 171   // extensions.
 172   void DispatchDeviceEvent(
 173       extensions::api::file_browser_private::DeviceEventType type,
 174       const std::string& path);
 175
 176   // Sends onFileTranferUpdated to extensions if needed. If |always| is true,
 177   // it sends the event always. Otherwise, it sends the event if enough time has
 178   // passed from the previous event so as not to make extension busy.
 179   void SendDriveFileTransferEvent(bool always);
 180
 181   // Manages the list of currently active Drive file transfer jobs.
 182   struct DriveJobInfoWithStatus {
 183     DriveJobInfoWithStatus();
 184     DriveJobInfoWithStatus(const drive::JobInfo& info,
 185                            const std::string& status);
 186     drive::JobInfo job_info;
 187     std::string status;
 188   };
 189   std::map<drive::JobID, DriveJobInfoWithStatus> drive_jobs_;
 190   base::Time last_file_transfer_event_;
 191   base::Time last_copy_progress_event_;
 192
 193   WatcherMap file_watchers_;
 194   scoped_ptr<PrefChangeRegistrar> pref_change_registrar_;
 195   Profile* profile_;
 196
 197   content::NotificationRegistrar notification_registrar_;
 198   bool multi_user_window_manager_observer_registered_;
 199
 200   // Note: This should remain the last member so it'll be destroyed and
 201   // invalidate the weak pointers before any other members are destroyed.
 202   base::WeakPtrFactory<EventRouter> weak_factory_;
 203   DISALLOW_COPY_AND_ASSIGN(EventRouter);
 204 };
 205
 206 }  // namespace file_manager
 207
 208 #endif  // CHROME_BROWSER_CHROMEOS_EXTENSIONS_FILE_MANAGER_EVENT_ROUTER_H_