src/components/storage_monitor/storage_monitor_win.h

   1 // Copyright 2014 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 COMPONENTS_STORAGE_MONITOR_STORAGE_MONITOR_WIN_H_
   6 #define COMPONENTS_STORAGE_MONITOR_STORAGE_MONITOR_WIN_H_
   7
   8 #include "base/basictypes.h"
   9 #include "base/memory/ref_counted.h"
  10 #include "base/memory/scoped_ptr.h"
  11 #include "components/storage_monitor/storage_monitor.h"
  12
  13 namespace base {
  14 class FilePath;
  15 }
  16
  17 class PortableDeviceWatcherWin;
  18 class TestStorageMonitorWin;
  19 class VolumeMountWatcherWin;
  20
  21 class StorageMonitorWin : public StorageMonitor {
  22  public:
  23   // Should only be called by browser start up code.
  24   // Use StorageMonitor::GetInstance() instead.
  25   // To support unit tests, this constructor takes |volume_mount_watcher| and
  26   // |portable_device_watcher| objects. These params are either constructed in
  27   // unit tests or in StorageMonitorWin CreateInternal() function.
  28   StorageMonitorWin(VolumeMountWatcherWin* volume_mount_watcher,
  29                     PortableDeviceWatcherWin* portable_device_watcher);
  30   virtual ~StorageMonitorWin();
  31
  32   // Must be called after the file thread is created.
  33   virtual void Init() OVERRIDE;
  34
  35   // StorageMonitor:
  36   virtual bool GetStorageInfoForPath(const base::FilePath& path,
  37                                      StorageInfo* device_info) const OVERRIDE;
  38   virtual bool GetMTPStorageInfoFromDeviceId(
  39       const std::string& storage_device_id,
  40       base::string16* device_location,
  41       base::string16* storage_object_id) const OVERRIDE;
  42
  43   virtual void EjectDevice(
  44       const std::string& device_id,
  45       base::Callback<void(EjectStatus)> callback) OVERRIDE;
  46
  47  private:
  48   class PortableDeviceNotifications;
  49   friend class TestStorageMonitorWin;
  50
  51   // Gets the removable storage information given a |device_path|. On success,
  52   // returns true and fills in |info|.
  53   bool GetDeviceInfo(const base::FilePath& device_path,
  54                      StorageInfo* info) const;
  55
  56   static LRESULT CALLBACK WndProcThunk(HWND hwnd, UINT message, WPARAM wparam,
  57                                        LPARAM lparam);
  58
  59   LRESULT CALLBACK WndProc(HWND hwnd, UINT message, WPARAM wparam,
  60                            LPARAM lparam);
  61
  62   void OnDeviceChange(UINT event_type, LPARAM data);
  63
  64   // The window class of |window_|.
  65   ATOM window_class_;
  66
  67   // The handle of the module that contains the window procedure of |window_|.
  68   HMODULE instance_;
  69   HWND window_;
  70
  71   // The volume mount point watcher, used to manage the mounted devices.
  72   scoped_ptr<VolumeMountWatcherWin> volume_mount_watcher_;
  73
  74   // The portable device watcher, used to manage media transfer protocol
  75   // devices.
  76   scoped_ptr<PortableDeviceWatcherWin> portable_device_watcher_;
  77
  78   DISALLOW_COPY_AND_ASSIGN(StorageMonitorWin);
  79 };
  80
  81 #endif  // COMPONENTS_STORAGE_MONITOR_STORAGE_MONITOR_WIN_H_