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// Copyright 2014 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.
#ifndef COMPONENTS_STORAGE_MONITOR_MEDIA_TRANSFER_PROTOCOL_DEVICE_OBSERVER_CHROMEOS_H_
#define COMPONENTS_STORAGE_MONITOR_MEDIA_TRANSFER_PROTOCOL_DEVICE_OBSERVER_CHROMEOS_H_
#include <map>
#include <string>
#include "base/macros.h"
#include "base/strings/string16.h"
#include "components/storage_monitor/storage_monitor.h"
#include "device/media_transfer_protocol/media_transfer_protocol_manager.h"
namespace base {
class FilePath;
}
namespace storage_monitor {
// Gets the mtp device information given a |storage_name|. On success,
// fills in |id|, |name|, |location|, |vendor_name|, and |product_name|.
typedef void (*GetStorageInfoFunc)(
const std::string& storage_name,
device::MediaTransferProtocolManager* mtp_manager,
std::string* id,
base::string16* name,
std::string* location,
base::string16* vendor_name,
base::string16* product_name);
// Helper class to send MTP storage attachment and detachment events to
// StorageMonitor.
class MediaTransferProtocolDeviceObserverChromeOS
: public device::MediaTransferProtocolManager::Observer {
public:
MediaTransferProtocolDeviceObserverChromeOS(
StorageMonitor::Receiver* receiver,
device::MediaTransferProtocolManager* mtp_manager);
~MediaTransferProtocolDeviceObserverChromeOS() override;
// Finds the storage that contains |path| and populates |storage_info|.
// Returns false if unable to find the storage.
bool GetStorageInfoForPath(const base::FilePath& path,
StorageInfo* storage_info) const;
void EjectDevice(const std::string& device_id,
base::Callback<void(StorageMonitor::EjectStatus)> callback);
protected:
// Only used in unit tests.
MediaTransferProtocolDeviceObserverChromeOS(
StorageMonitor::Receiver* receiver,
device::MediaTransferProtocolManager* mtp_manager,
GetStorageInfoFunc get_storage_info_func);
// device::MediaTransferProtocolManager::Observer implementation.
// Exposed for unit tests.
void StorageChanged(bool is_attached,
const std::string& storage_name) override;
private:
// Mapping of storage location and mtp storage info object.
typedef std::map<std::string, StorageInfo> StorageLocationToInfoMap;
// Enumerate existing mtp storage devices.
void EnumerateStorages();
// Find the |storage_map_| key for the record with this |device_id|. Returns
// true on success, false on failure.
bool GetLocationForDeviceId(const std::string& device_id,
std::string* location) const;
// Pointer to the MTP manager. Not owned. Client must ensure the MTP
// manager outlives this object.
device::MediaTransferProtocolManager* mtp_manager_;
// Map of all attached mtp devices.
StorageLocationToInfoMap storage_map_;
// Function handler to get storage information. This is useful to set a mock
// handler for unit testing.
GetStorageInfoFunc get_storage_info_func_;
// The notifications object to use to signal newly attached devices.
// Guaranteed to outlive this class.
StorageMonitor::Receiver* const notifications_;
DISALLOW_COPY_AND_ASSIGN(MediaTransferProtocolDeviceObserverChromeOS);
};
} // namespace storage_monitor
#endif // COMPONENTS_STORAGE_MONITOR_MEDIA_TRANSFER_PROTOCOL_DEVICE_OBSERVER_CHROMEOS_H_
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