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1 // Copyright 2013 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_FILE_MANAGER_MOUNTED_DISK_MONITOR_H_ | |
6 #define CHROME_BROWSER_CHROMEOS_FILE_MANAGER_MOUNTED_DISK_MONITOR_H_ | |
7 | |
8 #include <map> | |
9 #include <set> | |
10 #include <string> | |
11 | |
12 #include "base/memory/scoped_ptr.h" | |
13 #include "base/memory/weak_ptr.h" | |
14 #include "chromeos/dbus/power_manager_client.h" | |
15 #include "chromeos/disks/disk_mount_manager.h" | |
16 | |
17 namespace file_manager { | |
18 | |
19 // Observes PowerManager and updates its state when the system suspends and | |
20 // resumes. After the system resumes it will stay in "is_resuming" state for | |
21 // couple of seconds. This is to give DiskManager time to process device | |
22 // removed/added events (events for the devices that were present before suspend | |
23 // should not trigger any new notifications or file manager windows). | |
24 class MountedDiskMonitor : public chromeos::PowerManagerClient::Observer { | |
25 public: | |
26 explicit MountedDiskMonitor( | |
27 chromeos::PowerManagerClient* power_manager_client); | |
28 virtual ~MountedDiskMonitor(); | |
29 | |
30 // PowerManagerClient::Observer overrides: | |
31 virtual void SuspendImminent() OVERRIDE; | |
32 virtual void SuspendDone(const base::TimeDelta& sleep_duration) OVERRIDE; | |
33 | |
34 // Receives forwarded notifications originates from DiskMountManager. | |
35 void OnDiskEvent( | |
36 chromeos::disks::DiskMountManager::DiskEvent event, | |
37 const chromeos::disks::DiskMountManager::Disk* disk); | |
38 void OnDeviceEvent( | |
39 chromeos::disks::DiskMountManager::DeviceEvent event, | |
40 const std::string& device_path); | |
41 void OnMountEvent( | |
42 chromeos::disks::DiskMountManager::MountEvent event, | |
43 chromeos::MountError error_code, | |
44 const chromeos::disks::DiskMountManager::MountPointInfo& mount_info, | |
45 const chromeos::disks::DiskMountManager::Disk* disk); | |
46 | |
47 // Checks if the disk is being remounted. The disk is remounting if it has | |
48 // been unmounted during the resuming time span. | |
49 bool DiskIsRemounting( | |
50 const chromeos::disks::DiskMountManager::Disk& disk) const; | |
51 bool DeviceIsHardUnpluggedButNotReported( | |
52 const std::string& device_path) const; | |
53 void MarkAsHardUnpluggedReported(const std::string& device_path); | |
54 | |
55 // In order to avoid consuming time a lot for testing, this allows to set the | |
56 // resuming time span. | |
57 void set_resuming_time_span_for_testing( | |
58 const base::TimeDelta& resuming_time_span) { | |
59 resuming_time_span_ = resuming_time_span; | |
60 } | |
61 | |
62 private: | |
63 enum HardUnpluggedState { HARD_UNPLUGGED, HARD_UNPLUGGED_AND_REPORTED }; | |
64 // Maps source paths with corresponding uuids. | |
65 typedef std::map<std::string, std::string> DiskMap; | |
66 | |
67 // Set of uuids. | |
68 typedef std::set<std::string> DiskSet; | |
69 | |
70 void Reset(); | |
71 | |
72 chromeos::PowerManagerClient* power_manager_client_; | |
73 | |
74 bool is_resuming_; | |
75 DiskMap mounted_disks_; | |
76 DiskSet unmounted_while_resuming_; | |
77 // Set of device path that is hard unplugged. | |
78 std::map<std::string, HardUnpluggedState> hard_unplugged_; | |
79 base::TimeDelta resuming_time_span_; | |
80 base::WeakPtrFactory<MountedDiskMonitor> weak_factory_; | |
81 | |
82 DISALLOW_COPY_AND_ASSIGN(MountedDiskMonitor); | |
83 }; | |
84 | |
85 } // namespace file_manager | |
86 | |
87 #endif // CHROME_BROWSER_CHROMEOS_FILE_MANAGER_MOUNTED_DISK_MONITOR_H_ | |
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