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// Copyright 2018 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef COMPONENTS_STORAGE_MONITOR_MTP_MANAGER_CLIENT_CHROMEOS_H_
#define COMPONENTS_STORAGE_MONITOR_MTP_MANAGER_CLIENT_CHROMEOS_H_
#include <map>
#include <string>
#include <vector>
#include "base/component_export.h"
#include "base/memory/raw_ptr.h"
#include "base/memory/weak_ptr.h"
#include "components/storage_monitor/storage_monitor.h"
#include "mojo/public/cpp/bindings/associated_receiver.h"
#include "services/device/public/mojom/mtp_manager.mojom.h"
namespace base {
class FilePath;
}
namespace storage_monitor {
// This client listens for MTP storage attachment and detachment events
// from MtpManager and forwards them to StorageMonitor.
class COMPONENT_EXPORT(STORAGE_MONITOR) MtpManagerClientChromeOS
: public device::mojom::MtpManagerClient {
public:
MtpManagerClientChromeOS(StorageMonitor::Receiver* receiver,
device::mojom::MtpManager* mtp_manager);
MtpManagerClientChromeOS(const MtpManagerClientChromeOS&) = delete;
MtpManagerClientChromeOS& operator=(const MtpManagerClientChromeOS&) = delete;
~MtpManagerClientChromeOS() 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::OnceCallback<void(StorageMonitor::EjectStatus)> callback);
protected:
// device::mojom::MtpManagerClient implementation.
// Exposed for unit tests.
void StorageAttached(device::mojom::MtpStorageInfoPtr storage_info) override;
void StorageDetached(const std::string& storage_name) override;
private:
// Mapping of storage location and MTP storage info object.
using StorageLocationToInfoMap = std::map<std::string, StorageInfo>;
// Enumerate existing MTP storage devices.
void OnReceivedStorages(
std::vector<device::mojom::MtpStorageInfoPtr> storage_info_list);
// 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;
// Map of all attached MTP devices.
StorageLocationToInfoMap storage_map_;
// Pointer to the MTP manager. Not owned. Client must ensure the MTP
// manager outlives this object.
const raw_ptr<device::mojom::MtpManager> mtp_manager_;
mojo::AssociatedReceiver<device::mojom::MtpManagerClient> receiver_{this};
// The notifications object to use to signal newly attached devices.
// Guaranteed to outlive this class.
const raw_ptr<StorageMonitor::Receiver> notifications_;
base::WeakPtrFactory<MtpManagerClientChromeOS> weak_ptr_factory_{this};
};
} // namespace storage_monitor
#endif // COMPONENTS_STORAGE_MONITOR_MTP_MANAGER_CLIENT_CHROMEOS_H_
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