event_router.h revision 0529e5d033099cbfc42635f6f6183833b09dff6e 
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_observer.h"
22#include "chrome/browser/drive/drive_service_interface.h"
23#include "chrome/browser/ui/ash/multi_user/multi_user_window_manager.h"
24#include "chrome/common/extensions/api/file_browser_private.h"
25#include "chromeos/disks/disk_mount_manager.h"
26#include "chromeos/network/network_state_handler_observer.h"
27#include "content/public/browser/notification_observer.h"
28#include "content/public/browser/notification_registrar.h"
29#include "webkit/browser/fileapi/file_system_operation.h"
30
31class PrefChangeRegistrar;
32class Profile;
33
34using file_manager::util::EntryDefinition;
35
36namespace base {
37class ListValue;
38}
39
40namespace chromeos {
41class NetworkState;
42}
43
44namespace file_manager {
45
46// Monitors changes in disk mounts, network connection state and preferences
47// affecting File Manager. Dispatches appropriate File Browser events.
48class EventRouter
49    : public chromeos::NetworkStateHandlerObserver,
50      public drive::FileSystemObserver,
51      public drive::JobListObserver,
52      public drive::DriveServiceObserver,
53      public VolumeManagerObserver,
54      public content::NotificationObserver,
55      public chrome::MultiUserWindowManager::Observer {
56 public:
57  explicit EventRouter(Profile* profile);
58  virtual ~EventRouter();
59
60  void Shutdown();
61
62  // Starts observing file system change events.
63  void ObserveEvents();
64
65  typedef base::Callback<void(bool success)> BoolCallback;
66
67  // Adds a file watch at |local_path|, associated with |virtual_path|, for
68  // an extension with |extension_id|.
69  //
70  // |callback| will be called with true on success, or false on failure.
71  // |callback| must not be null.
72  void AddFileWatch(const base::FilePath& local_path,
73                    const base::FilePath& virtual_path,
74                    const std::string& extension_id,
75                    const BoolCallback& callback);
76
77  // Removes a file watch at |local_path| for an extension with |extension_id|.
78  void RemoveFileWatch(const base::FilePath& local_path,
79                       const std::string& extension_id);
80
81  // Called when a copy task is completed.
82  void OnCopyCompleted(
83      int copy_id, const GURL& source_url, const GURL& destination_url,
84      base::File::Error error);
85
86  // Called when a copy task progress is updated.
87  void OnCopyProgress(int copy_id,
88                      fileapi::FileSystemOperation::CopyProgressType type,
89                      const GURL& source_url,
90                      const GURL& destination_url,
91                      int64 size);
92
93  // Register observer to the multi user window manager.
94  void RegisterMultiUserWindowManagerObserver();
95
96  // chromeos::NetworkStateHandlerObserver overrides.
97  virtual void DefaultNetworkChanged(
98      const chromeos::NetworkState* network) OVERRIDE;
99
100  // drive::JobListObserver overrides.
101  virtual void OnJobAdded(const drive::JobInfo& job_info) OVERRIDE;
102  virtual void OnJobUpdated(const drive::JobInfo& job_info) OVERRIDE;
103  virtual void OnJobDone(const drive::JobInfo& job_info,
104                         drive::FileError error) OVERRIDE;
105
106  // drive::DriveServiceObserver overrides.
107  virtual void OnRefreshTokenInvalid() OVERRIDE;
108
109  // drive::FileSystemObserver overrides.
110  virtual void OnDirectoryChanged(const base::FilePath& drive_path) OVERRIDE;
111  virtual void OnDriveSyncError(drive::file_system::DriveSyncErrorType type,
112                                const base::FilePath& drive_path) OVERRIDE;
113
114  // VolumeManagerObserver overrides.
115  virtual void OnDiskAdded(
116      const chromeos::disks::DiskMountManager::Disk& disk,
117      bool mounting) OVERRIDE;
118  virtual void OnDiskRemoved(
119      const chromeos::disks::DiskMountManager::Disk& disk) OVERRIDE;
120  virtual void OnDeviceAdded(const std::string& device_path) OVERRIDE;
121  virtual void OnDeviceRemoved(const std::string& device_path,
122                               bool hard_unplugged) OVERRIDE;
123  virtual void OnVolumeMounted(chromeos::MountError error_code,
124                               const VolumeInfo& volume_info,
125                               bool is_remounting) OVERRIDE;
126  virtual void OnVolumeUnmounted(chromeos::MountError error_code,
127                                 const VolumeInfo& volume_info) OVERRIDE;
128  virtual void OnFormatStarted(
129      const std::string& device_path, bool success) OVERRIDE;
130  virtual void OnFormatCompleted(
131      const std::string& device_path, bool success) OVERRIDE;
132
133  // content::NotificationObserver overrides.
134  virtual void Observe(int type,
135                       const content::NotificationSource& source,
136                       const content::NotificationDetails& details) OVERRIDE;
137
138  // chrome::MultiUserWindowManager::Observer overrides:
139  virtual void OnOwnerEntryChanged(aura::Window* window) OVERRIDE;
140
141 private:
142  typedef std::map<base::FilePath, FileWatcher*> WatcherMap;
143
144  // Called when prefs related to file manager change.
145  void OnFileManagerPrefsChanged();
146
147  // Process file watch notifications.
148  void HandleFileWatchNotification(const base::FilePath& path,
149                                   bool got_error);
150
151  // Sends directory change event.
152  void DispatchDirectoryChangeEvent(
153      const base::FilePath& path,
154      bool error,
155      const std::vector<std::string>& extension_ids);
156
157  // Sends directory change event, after converting the file definition to entry
158  // definition.
159  void DispatchDirectoryChangeEventWithEntryDefinition(
160      bool watcher_error,
161      const EntryDefinition& entry_definition);
162
163  // If needed, opens a file manager window for the removable device mounted at
164  // |mount_path|. Disk.mount_path() is empty, since it is being filled out
165  // after calling notifying observers by DiskMountManager.
166  void ShowRemovableDeviceInFileManager(const base::FilePath& mount_path);
167
168  // Dispatches an onDeviceChanged event containing |type| and |path| to
169  // extensions.
170  void DispatchDeviceEvent(
171      extensions::api::file_browser_private::DeviceEventType type,
172      const std::string& path);
173
174  // Sends onFileTranferUpdated to extensions if needed. If |always| is true,
175  // it sends the event always. Otherwise, it sends the event if enough time has
176  // passed from the previous event so as not to make extension busy.
177  void SendDriveFileTransferEvent(bool always);
178
179  // Manages the list of currently active Drive file transfer jobs.
180  struct DriveJobInfoWithStatus {
181    DriveJobInfoWithStatus();
182    DriveJobInfoWithStatus(const drive::JobInfo& info,
183                           const std::string& status);
184    drive::JobInfo job_info;
185    std::string status;
186  };
187  std::map<drive::JobID, DriveJobInfoWithStatus> drive_jobs_;
188  base::Time last_file_transfer_event_;
189  base::Time last_copy_progress_event_;
190
191  WatcherMap file_watchers_;
192  scoped_ptr<PrefChangeRegistrar> pref_change_registrar_;
193  Profile* profile_;
194
195  content::NotificationRegistrar notification_registrar_;
196  bool multi_user_window_manager_observer_registered_;
197
198  // Note: This should remain the last member so it'll be destroyed and
199  // invalidate the weak pointers before any other members are destroyed.
200  base::WeakPtrFactory<EventRouter> weak_factory_;
201  DISALLOW_COPY_AND_ASSIGN(EventRouter);
202};
203
204}  // namespace file_manager
205
206#endif  // CHROME_BROWSER_CHROMEOS_EXTENSIONS_FILE_MANAGER_EVENT_ROUTER_H_
207