bluetooth: Move requestDevice to mojo

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 <stdint.h>
-
-#include <map>
-
-#include "base/id_map.h"
-#include "base/macros.h"
-#include "base/memory/scoped_vector.h"
-#include "base/memory/weak_ptr.h"
-#include "content/browser/bluetooth/bluetooth_allowed_devices_map.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_notify_session.h"
-#include "device/bluetooth/bluetooth_remote_gatt_service.h"
-
-namespace device {
-class BluetoothUUID;
-}
-
-namespace content {
-
-class WebBluetoothServiceImpl;
-
-struct BluetoothScanFilter;
-struct CacheQueryResult;
-
-// Dispatches and sends bluetooth related messages sent to/from a child
-// process BluetoothDispatcher from/to the main browser process.
-//
-// Intended to be instantiated by the RenderProcessHost and installed as
-// a filter on the channel. BrowserMessageFilter is refcounted and typically
-// lives as long as it is installed on a channel.
-//
-// UI Thread Note:
-// BluetoothDispatcherHost is constructed, operates, and destroyed on the UI
-// thread because BluetoothAdapter and related objects live there.
-class CONTENT_EXPORT BluetoothDispatcherHost final
-    : public BrowserMessageFilter,
-      public device::BluetoothAdapter::Observer {
- public:
-  BluetoothDispatcherHost(int render_process_id);
-  // BrowserMessageFilter:
-  void OnDestruct() const override;
-  void OverrideThreadForMessage(const IPC::Message& message,
-                                BrowserThread::ID* thread) override;
-  bool OnMessageReceived(const IPC::Message& message) override;
-
-  void SetBluetoothAdapterForTesting(
-      scoped_refptr<device::BluetoothAdapter> mock_adapter);
-
-  // Temporary functions so that WebBluetoothServices can add themselves as
-  // observers of the Bluetooth Adapter without having to get an adapter for
-  // themselves.
-  // TODO(ortuno): Remove once WebBluetoothServiceImpl gets its own adapter.
-  // https://crbug.com/508771
-  void AddAdapterObserver(device::BluetoothAdapter::Observer* observer);
-  void RemoveAdapterObserver(device::BluetoothAdapter::Observer* observer);
-
- protected:
-  ~BluetoothDispatcherHost() override;
-
- private:
-  friend class WebBluetoothServiceImpl;
-  friend class base::DeleteHelper<BluetoothDispatcherHost>;
-  friend struct BrowserThread::DeleteOnThread<BrowserThread::UI>;
-
-  struct RequestDeviceSession;
-
-  // Set |adapter_| to a BluetoothAdapter instance and register observers,
-  // releasing references to previous |adapter_|.
-  //
-  // We currently keep track of observers that used BluetoothDispatcherHost
-  // to register themselves on the adapter and remove them from |adapter_| and
-  // add them to |adapter| when this function is called.
-  // TODO(ortuno): Observers should add/remove themselves to/from the adapter.
-  // http://crbug.com/603291
-  void set_adapter(scoped_refptr<device::BluetoothAdapter> adapter);
-
-  // Makes sure a BluetoothDiscoverySession is active for |session|, and resets
-  // its timeout.
-  void StartDeviceDiscovery(RequestDeviceSession* session, int chooser_id);
-
-  // Stops all BluetoothDiscoverySessions being run for requestDevice()
-  // 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;
-
-  // 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);
-
-  // Callbacks for BluetoothDevice::OnRequestDevice.
-  // If necessary, the adapter must be obtained before continuing to Impl.
-  void OnGetAdapter(base::Closure continuation,
-                    scoped_refptr<device::BluetoothAdapter> adapter);
-  void OnRequestDeviceImpl(
-      int thread_id,
-      int request_id,
-      int frame_routing_id,
-      const std::vector<content::BluetoothScanFilter>& filters,
-      const std::vector<device::BluetoothUUID>& optional_services);
-
-  // Callbacks for BluetoothAdapter::StartDiscoverySession.
-  void OnDiscoverySessionStarted(
-      int chooser_id,
-      std::unique_ptr<device::BluetoothDiscoverySession> discovery_session);
-  void OnDiscoverySessionStartedError(int chooser_id);
-
-  // BluetoothChooser::EventHandler:
-  void OnBluetoothChooserEvent(int chooser_id,
-                               BluetoothChooser::Event event,
-                               const std::string& device_id);
-
-  // The chooser implementation yields to the event loop to avoid re-entering
-  // code that's still using the RequestDeviceSession, and continues with this
-  // function.
-  void FinishClosingChooser(int chooser_id,
-                            BluetoothChooser::Event event,
-                            const std::string& device_id);
-
-  // Functions to query the platform cache for the bluetooth object.
-  // result.outcome == CacheQueryOutcome::SUCCESS if the object was found in the
-  // cache. Otherwise result.outcome that can used to record the outcome and
-  // result.error will contain the error that should be send to the renderer.
-  // One of the possible outcomes is BAD_RENDERER. In this case the outcome
-  // was already recorded and since there renderer crashed there is no need to
-  // send a response.
-  // Queries the platform cache for a Device with |device_id| for |origin|.
-  // Fills in the |outcome| field and the |device| field if successful.
-  CacheQueryResult QueryCacheForDevice(const url::Origin& origin,
-                                       const std::string& device_id);
-
-  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_;
-
-  BluetoothAllowedDevicesMap allowed_devices_map_;
-
-  // 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_;
-
-  std::unordered_set<device::BluetoothAdapter::Observer*> adapter_observers_;
-
-  // 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_;
-
-  // |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_