bluetooth: Subscribe to notifications

content/browser/bluetooth/bluetooth_dispatcher_host.h

 // 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 CONTENT_BROWSER_BLUETOOTH_BLUETOOTH_DISPATCHER_HOST_H_
 #define CONTENT_BROWSER_BLUETOOTH_BLUETOOTH_DISPATCHER_HOST_H_
 
 #include "base/basictypes.h"
+#include "base/containers/scoped_ptr_map.h"
 #include "base/id_map.h"
 #include "base/memory/scoped_vector.h"
 #include "base/memory/weak_ptr.h"
 #include "content/public/browser/bluetooth_chooser.h"
 #include "content/public/browser/browser_message_filter.h"
 #include "device/bluetooth/bluetooth_adapter.h"
 #include "device/bluetooth/bluetooth_gatt_connection.h"
+#include "device/bluetooth/bluetooth_gatt_notify_session.h"
 #include "device/bluetooth/bluetooth_gatt_service.h"
 
 namespace device {
 class BluetoothUUID;
 }
 
 namespace content {
 
 struct BluetoothScanFilter;
 
@@ skipping 42 matching lines @@
   // choosers.
   void StopDeviceDiscovery();
 
   // BluetoothAdapter::Observer:
   void AdapterPoweredChanged(device::BluetoothAdapter* adapter,
                              bool powered) override;
   void DeviceAdded(device::BluetoothAdapter* adapter,
                    device::BluetoothDevice* device) override;
   void DeviceRemoved(device::BluetoothAdapter* adapter,
                      device::BluetoothDevice* device) override;
+  void GattCharacteristicValueChanged(
+      device::BluetoothAdapter* adapter,
+      device::BluetoothGattCharacteristic* characteristic,
+      const std::vector<uint8>& value) override;
 
   // IPC Handlers, see definitions in bluetooth_messages.h.
   void OnRequestDevice(
       int thread_id,
       int request_id,
       int frame_routing_id,
       const std::vector<content::BluetoothScanFilter>& filters,
       const std::vector<device::BluetoothUUID>& optional_services);
   void OnConnectGATT(int thread_id, int request_id,
                      const std::string& device_instance_id);
   void OnGetPrimaryService(int thread_id,
                            int request_id,
                            const std::string& device_instance_id,
                            const std::string& service_uuid);
   void OnGetCharacteristic(int thread_id,
                            int request_id,
                            const std::string& service_instance_id,
                            const std::string& characteristic_uuid);
   void OnReadValue(int thread_id,
                    int request_id,
                    const std::string& characteristic_instance_id);
   void OnWriteValue(int thread_id,
                     int request_id,
                     const std::string& characteristic_instance_id,
                     const std::vector<uint8_t>& value);
+  void OnStartNotifications(int thread_id,
+                            int request_id,
+                            const std::string& characteristic_instance_id);
+  void OnStopNotifications(int thread_id,
+                           int request_id,
+                           const std::string& characteristic_instance_id);
 
   // Callbacks for BluetoothAdapter::StartDiscoverySession.
   void OnDiscoverySessionStarted(
       int chooser_id,
       scoped_ptr<device::BluetoothDiscoverySession> discovery_session);
   void OnDiscoverySessionStartedError(int chooser_id);
 
   // BluetoothChooser::EventHandler:
   void OnBluetoothChooserEvent(int chooser_id,
                                BluetoothChooser::Event event,
@@ skipping 36 matching lines @@
       int thread_id,
       int request_id,
       device::BluetoothGattService::GattErrorCode);
 
   // Callbacks for BluetoothGattCharacteristic::WriteRemoteCharacteristic.
   void OnWriteValueSuccess(int thread_id, int request_id);
   void OnWriteValueFailed(int thread_id,
                           int request_id,
                           device::BluetoothGattService::GattErrorCode);
 
+  // Callbacks for BluetoothGattCharacteristic::StartNotifySession.
+  void OnStartNotifySessionSuccess(
+      int thread_id,
+      int request_id,
+      scoped_ptr<device::BluetoothGattNotifySession> notify_session);
+  void OnStartNotifySessionFailed(
+      int thread_id,
+      int request_id,
+      device::BluetoothGattService::GattErrorCode error_code);
+
+  // Callback for BluetoothGattNotifySession::Stop.
+  void OnStopNotifySession(int thread_id,
+                           int request_id,
+                           const std::string& characteristic_instance_id);
+
   // Show help pages from the chooser dialog.
   void ShowBluetoothOverviewLink();
   void ShowBluetoothPairingLink();
   void ShowBluetoothAdapterOffLink();
 
   int render_process_id_;
 
   // Maps a (thread_id,request_id) to information about its requestDevice call,
   // including the chooser dialog.
   // An entry is added to this map in OnRequestDevice, and should be removed
   // again everywhere a requestDevice() reply is sent.
   IDMap<RequestDeviceSession, IDMapOwnPointer> request_device_sessions_;
 
   // Maps to get the object's parent based on it's instanceID
   // Map of service_instance_id to device_instance_id.
   std::map<std::string, std::string> service_to_device_;
   // Map of characteristic_instance_id to service_instance_id.
   std::map<std::string, std::string> characteristic_to_service_;
 
+  // Map that matches characteristic_instance_id to notify session.
+  // TODO(ortuno): Also key by thread_id once support for web workers,
+  // is added: http://crbug.com/537372
+  base::ScopedPtrMap<std::string,
+                     scoped_ptr<device::BluetoothGattNotifySession>>
+      characteristic_id_to_notify_session_;
+
   // Defines how long to scan for and how long to discover services for.
   int current_delay_time_;
 
   // A BluetoothAdapter instance representing an adapter of the system.
   scoped_refptr<device::BluetoothAdapter> adapter_;
 
   // Automatically stops Bluetooth discovery a set amount of time after it was
   // started. We have a single timer for all of Web Bluetooth because it's
   // simpler than tracking timeouts for each RequestDeviceSession individually,
   // and because there's no harm in extending the length of a few discovery
   // sessions when other sessions are active.
   base::Timer discovery_session_timer_;
 
   // Retain BluetoothGattConnection objects to keep connections open.
   // TODO(scheib): Destroy as connections are closed. http://crbug.com/539643
   ScopedVector<device::BluetoothGattConnection> connections_;
 
   // |weak_ptr_on_ui_thread_| provides weak pointers, e.g. for callbacks, and
   // because it exists and has been bound to the UI thread enforces that all
   // copies verify they are also used on the UI thread.
   base::WeakPtr<BluetoothDispatcherHost> weak_ptr_on_ui_thread_;
   base::WeakPtrFactory<BluetoothDispatcherHost> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(BluetoothDispatcherHost);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_BLUETOOTH_BLUETOOTH_DISPATCHER_HOST_H_