chrome/browser/storage_monitor/storage_monitor_chromeos.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 // chromeos::StorageMonitorCros listens for mount point changes and notifies
   6 // listeners about the addition and deletion of media devices.
   7 // This class lives on the UI thread.
   8
   9 #ifndef CHROME_BROWSER_STORAGE_MONITOR_STORAGE_MONITOR_CHROMEOS_H_
  10 #define CHROME_BROWSER_STORAGE_MONITOR_STORAGE_MONITOR_CHROMEOS_H_
  11
  12 #if !defined(OS_CHROMEOS)
  13 #error "Should only be used on ChromeOS."
  14 #endif
  15
  16 #include <map>
  17 #include <string>
  18
  19 #include "base/basictypes.h"
  20 #include "base/compiler_specific.h"
  21 #include "base/memory/scoped_ptr.h"
  22 #include "base/memory/weak_ptr.h"
  23 #include "chrome/browser/storage_monitor/storage_monitor.h"
  24 #include "chromeos/disks/disk_mount_manager.h"
  25
  26 class MediaTransferProtocolDeviceObserverLinux;
  27
  28 namespace chromeos {
  29
  30 class StorageMonitorCros : public StorageMonitor,
  31                            public disks::DiskMountManager::Observer {
  32  public:
  33   // Should only be called by browser start up code.
  34   // Use StorageMonitor::GetInstance() instead.
  35   StorageMonitorCros();
  36   virtual ~StorageMonitorCros();
  37
  38   // Sets up disk listeners and issues notifications for any discovered
  39   // mount points. Sets up MTP manager and listeners.
  40   virtual void Init() OVERRIDE;
  41
  42  protected:
  43   void SetMediaTransferProtocolManagerForTest(
  44       device::MediaTransferProtocolManager* test_manager);
  45
  46   // disks::DiskMountManager::Observer implementation.
  47   virtual void OnDiskEvent(disks::DiskMountManager::DiskEvent event,
  48                            const disks::DiskMountManager::Disk* disk) OVERRIDE;
  49   virtual void OnDeviceEvent(disks::DiskMountManager::DeviceEvent event,
  50                              const std::string& device_path) OVERRIDE;
  51   virtual void OnMountEvent(
  52       disks::DiskMountManager::MountEvent event,
  53       MountError error_code,
  54       const disks::DiskMountManager::MountPointInfo& mount_info) OVERRIDE;
  55   virtual void OnFormatEvent(disks::DiskMountManager::FormatEvent event,
  56                              FormatError error_code,
  57                              const std::string& device_path) OVERRIDE;
  58
  59   // StorageMonitor implementation.
  60   virtual bool GetStorageInfoForPath(const base::FilePath& path,
  61                                      StorageInfo* device_info) const OVERRIDE;
  62   virtual void EjectDevice(
  63       const std::string& device_id,
  64       base::Callback<void(EjectStatus)> callback) OVERRIDE;
  65   virtual device::MediaTransferProtocolManager*
  66       media_transfer_protocol_manager() OVERRIDE;
  67
  68  private:
  69   // Mapping of mount path to removable mass storage info.
  70   typedef std::map<std::string, StorageInfo> MountMap;
  71
  72   // Helper method that checks existing mount points to see if they are media
  73   // devices. Eventually calls AddMountedPath for all mount points.
  74   void CheckExistingMountPoints();
  75
  76   // Adds the mount point in |mount_info| to |mount_map_| and send a media
  77   // device attach notification. |has_dcim| is true if the attached device has
  78   // a DCIM folder.
  79   void AddMountedPath(const disks::DiskMountManager::MountPointInfo& mount_info,
  80                       bool has_dcim);
  81
  82   // Mapping of relevant mount points and their corresponding mount devices.
  83   MountMap mount_map_;
  84
  85   scoped_ptr<device::MediaTransferProtocolManager>
  86       media_transfer_protocol_manager_;
  87   scoped_ptr<MediaTransferProtocolDeviceObserverLinux>
  88       media_transfer_protocol_device_observer_;
  89
  90   base::WeakPtrFactory<StorageMonitorCros> weak_ptr_factory_;
  91
  92   DISALLOW_COPY_AND_ASSIGN(StorageMonitorCros);
  93 };
  94
  95 }  // namespace chromeos
  96
  97 #endif  // CHROME_BROWSER_STORAGE_MONITOR_STORAGE_MONITOR_CHROMEOS_H_