components/storage_monitor/mtp_manager_client_chromeos.h

   1 // Copyright 2018 The Chromium Authors
   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_MTP_MANAGER_CLIENT_CHROMEOS_H_
   6 #define COMPONENTS_STORAGE_MONITOR_MTP_MANAGER_CLIENT_CHROMEOS_H_
   7
   8 #include <map>
   9 #include <string>
  10 #include <vector>
  11
  12 #include "base/memory/raw_ptr.h"
  13 #include "base/memory/weak_ptr.h"
  14 #include "components/storage_monitor/storage_monitor.h"
  15 #include "mojo/public/cpp/bindings/associated_receiver.h"
  16 #include "services/device/public/mojom/mtp_manager.mojom.h"
  17
  18 namespace base {
  19 class FilePath;
  20 }
  21
  22 namespace storage_monitor {
  23
  24 // This client listens for MTP storage attachment and detachment events
  25 // from MtpManager and forwards them to StorageMonitor.
  26 class MtpManagerClientChromeOS : public device::mojom::MtpManagerClient {
  27  public:
  28   MtpManagerClientChromeOS(StorageMonitor::Receiver* receiver,
  29                            device::mojom::MtpManager* mtp_manager);
  30
  31   MtpManagerClientChromeOS(const MtpManagerClientChromeOS&) = delete;
  32   MtpManagerClientChromeOS& operator=(const MtpManagerClientChromeOS&) = delete;
  33
  34   ~MtpManagerClientChromeOS() override;
  35
  36   // Finds the storage that contains |path| and populates |storage_info|.
  37   // Returns false if unable to find the storage.
  38   bool GetStorageInfoForPath(const base::FilePath& path,
  39                              StorageInfo* storage_info) const;
  40
  41   void EjectDevice(
  42       const std::string& device_id,
  43       base::OnceCallback<void(StorageMonitor::EjectStatus)> callback);
  44
  45  protected:
  46   // device::mojom::MtpManagerClient implementation.
  47   // Exposed for unit tests.
  48   void StorageAttached(device::mojom::MtpStorageInfoPtr storage_info) override;
  49   void StorageDetached(const std::string& storage_name) override;
  50
  51  private:
  52   // Mapping of storage location and MTP storage info object.
  53   using StorageLocationToInfoMap = std::map<std::string, StorageInfo>;
  54
  55   // Enumerate existing MTP storage devices.
  56   void OnReceivedStorages(
  57       std::vector<device::mojom::MtpStorageInfoPtr> storage_info_list);
  58
  59   // Find the |storage_map_| key for the record with this |device_id|. Returns
  60   // true on success, false on failure.
  61   bool GetLocationForDeviceId(const std::string& device_id,
  62                               std::string* location) const;
  63
  64   // Map of all attached MTP devices.
  65   StorageLocationToInfoMap storage_map_;
  66
  67   // Pointer to the MTP manager. Not owned. Client must ensure the MTP
  68   // manager outlives this object.
  69   const raw_ptr<device::mojom::MtpManager, ExperimentalAsh> mtp_manager_;
  70
  71   mojo::AssociatedReceiver<device::mojom::MtpManagerClient> receiver_{this};
  72
  73   // The notifications object to use to signal newly attached devices.
  74   // Guaranteed to outlive this class.
  75   const raw_ptr<StorageMonitor::Receiver, ExperimentalAsh> notifications_;
  76
  77   base::WeakPtrFactory<MtpManagerClientChromeOS> weak_ptr_factory_{this};
  78 };
  79
  80 }  // namespace storage_monitor
  81
  82 #endif  // COMPONENTS_STORAGE_MONITOR_MTP_MANAGER_CLIENT_CHROMEOS_H_