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// Copyright (c) 2012 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 CHROMEOS_DBUS_BLUETOOTH_INPUT_CLIENT_H_
#define CHROMEOS_DBUS_BLUETOOTH_INPUT_CLIENT_H_
#pragma once
#include <string>
#include "base/callback.h"
#include "base/observer_list.h"
#include "base/values.h"
#include "chromeos/chromeos_export.h"
#include "chromeos/dbus/bluetooth_property.h"
#include "chromeos/dbus/dbus_client_implementation_type.h"
#include "dbus/object_path.h"
namespace dbus {
class Bus;
} // namespace dbus
namespace chromeos {
class BluetoothAdapterClient;
// BluetoothInputClient is used to communicate with the Input interface
// of a bluetooth device, rather than the generic device interface. Input
// devices are those conforming to the Bluetooth SIG HID (Human Interface
// Device) Profile such as keyboards, mice, trackpads and joysticks.
class CHROMEOS_EXPORT BluetoothInputClient {
public:
// Structure of properties associated with bluetooth input devices.
struct Properties : public BluetoothPropertySet {
// Indicates that the device is currently connected. Read-only.
BluetoothProperty<bool> connected;
Properties(dbus::ObjectProxy* object_proxy,
PropertyChangedCallback callback);
virtual ~Properties();
};
// Interface for observing changes from a bluetooth input device.
class Observer {
public:
virtual ~Observer() {}
// Called when the device with object path |object_path| has a
// change in value of the input property named |property_name|.
virtual void InputPropertyChanged(const dbus::ObjectPath& object_path,
const std::string& property_name) {}
};
virtual ~BluetoothInputClient();
// Adds and removes observers for events on all bluetooth input
// devices. Check the |object_path| parameter of observer methods to
// determine which device is issuing the event.
virtual void AddObserver(Observer* observer) = 0;
virtual void RemoveObserver(Observer* observer) = 0;
// Obtain the input properties for the device with object path |object_path|,
// any values should be copied if needed.
virtual Properties* GetProperties(const dbus::ObjectPath& object_path) = 0;
// The InputCallback is used for input device methods that only return to
// indicate success. It receives two arguments, the |object_path| of the
// input devuce the call was made on and |success| which indicates whether
// or not the request succeeded.
typedef base::Callback<void(const dbus::ObjectPath&, bool)> InputCallback;
// Connects the input subsystem to the device with object path
// |object_path|, which should already be a known device on the adapter.
virtual void Connect(const dbus::ObjectPath& object_path,
const InputCallback& callback) = 0;
// Disconnects the input subsystem from the device with object path
// |object_path| without terminating the low-level ACL connection,
virtual void Disconnect(const dbus::ObjectPath& object_path,
const InputCallback& callback) = 0;
// Creates the instance.
static BluetoothInputClient* Create(DBusClientImplementationType type,
dbus::Bus* bus,
BluetoothAdapterClient* adapter_client);
protected:
BluetoothInputClient();
private:
DISALLOW_COPY_AND_ASSIGN(BluetoothInputClient);
};
} // namespace chromeos
#endif // CHROMEOS_DBUS_BLUETOOTH_INPUT_CLIENT_H_
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