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// Copyright (c) 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
// chromeos::RemovableDeviceNotificationsCros listens for mount point changes
// and notifies listeners about the addition and deletion of media
// devices.
#ifndef CHROME_BROWSER_SYSTEM_MONITOR_REMOVABLE_DEVICE_NOTIFICATIONS_CHROMEOS_H_
#define CHROME_BROWSER_SYSTEM_MONITOR_REMOVABLE_DEVICE_NOTIFICATIONS_CHROMEOS_H_
#if !defined(OS_CHROMEOS)
#error "Should only be used on ChromeOS."
#endif
#include <map>
#include <string>
#include "base/basictypes.h"
#include "base/compiler_specific.h"
#include "base/memory/ref_counted.h"
#include "chrome/browser/system_monitor/removable_storage_notifications.h"
#include "chromeos/disks/disk_mount_manager.h"
namespace chromeos {
class RemovableDeviceNotificationsCros
: public chrome::RemovableStorageNotifications,
public base::RefCountedThreadSafe<RemovableDeviceNotificationsCros>,
public disks::DiskMountManager::Observer {
public:
// Should only be called by browser start up code. Use GetInstance() instead.
RemovableDeviceNotificationsCros();
virtual void OnDiskEvent(disks::DiskMountManager::DiskEvent event,
const disks::DiskMountManager::Disk* disk) OVERRIDE;
virtual void OnDeviceEvent(disks::DiskMountManager::DeviceEvent event,
const std::string& device_path) OVERRIDE;
virtual void OnMountEvent(
disks::DiskMountManager::MountEvent event,
MountError error_code,
const disks::DiskMountManager::MountPointInfo& mount_info) OVERRIDE;
virtual void OnFormatEvent(disks::DiskMountManager::FormatEvent event,
FormatError error_code,
const std::string& device_path) OVERRIDE;
// Finds the device that contains |path| and populates |device_info|.
// Returns false if unable to find the device.
virtual bool GetDeviceInfoForPath(
const base::FilePath& path,
StorageInfo* device_info) const OVERRIDE;
// Returns the storage size of the device present at |location|. If the
// device information is unavailable, returns zero.
virtual uint64 GetStorageSize(const std::string& location) const OVERRIDE;
private:
struct StorageObjectInfo {
// Basic details {storage device name, location and identifier}.
StorageInfo storage_info;
// Device storage size.
uint64 storage_size_in_bytes;
};
friend class base::RefCountedThreadSafe<RemovableDeviceNotificationsCros>;
// Mapping of mount path to removable mass storage info.
typedef std::map<std::string, StorageObjectInfo> MountMap;
// Private to avoid code deleting the object.
virtual ~RemovableDeviceNotificationsCros();
// Checks existing mount points map for media devices. For each mount point,
// call CheckMountedPathOnFileThread() below.
void CheckExistingMountPointsOnUIThread();
// Checks if the mount point in |mount_info| is a media device. If it is,
// then continue with AddMountedPathOnUIThread() below.
void CheckMountedPathOnFileThread(
const disks::DiskMountManager::MountPointInfo& mount_info);
// Adds the mount point in |mount_info| to |mount_map_| and send a media
// device attach notification. |has_dcim| is true if the attached device has
// a DCIM folder.
void AddMountedPathOnUIThread(
const disks::DiskMountManager::MountPointInfo& mount_info,
bool has_dcim);
// Mapping of relevant mount points and their corresponding mount devices.
// Only accessed on the UI thread.
MountMap mount_map_;
DISALLOW_COPY_AND_ASSIGN(RemovableDeviceNotificationsCros);
};
} // namespace chromeos
#endif // CHROME_BROWSER_SYSTEM_MONITOR_REMOVABLE_DEVICE_NOTIFICATIONS_CHROMEOS_H_
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