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