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