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// Copyright 2017 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 UI_EVENTS_OZONE_GAMEPAD_GAMEPAD_PROVIDER_OZONE_H_
#define UI_EVENTS_OZONE_GAMEPAD_GAMEPAD_PROVIDER_OZONE_H_
#include <set>
#include <vector>
#include "base/component_export.h"
#include "base/macros.h"
#include "base/observer_list.h"
#include "base/time/time.h"
#include "ui/events/devices/gamepad_device.h"
#include "ui/events/ozone/gamepad/gamepad_observer.h"
namespace base {
template <typename T>
struct DefaultSingletonTraits;
}
namespace ui {
class COMPONENT_EXPORT(EVENTS_OZONE) GamepadProviderOzone {
public:
// Get the GamepadProviderOzone instance.
static GamepadProviderOzone* GetInstance();
// Dispatch GamepadDevicesUpdate event when gamepad device is connected or
// disconnected. This function must be called on UI thread.
void DispatchGamepadDevicesUpdated(
std::vector<GamepadDevice> gamepad_devices);
// Dispatch button event when gamepad event is seen.
// Code is the index of gamepad button or gamepad axis defined in W3C standard
// gamepad.
// This function must be called on UI thread.
void DispatchGamepadEvent(const GamepadEvent& event);
// Add observer to gamepad provider. This function must be called on UI
// thread.
void AddGamepadObserver(GamepadObserver* observer);
// Remove observer from gamepad provider. This function must be called on UI
// thread.
void RemoveGamepadObserver(GamepadObserver* observer);
// Get the list of currently connected gamepad devices. This function must be
// called on UI thread.
std::vector<GamepadDevice> GetGamepadDevices();
private:
GamepadProviderOzone();
~GamepadProviderOzone();
// Make SingletonTraits friend to enable singleton.
friend struct base::DefaultSingletonTraits<GamepadProviderOzone>;
// Registered observers will receive gamepad device update event and gamepad
// event.
base::ObserverList<GamepadObserver>::Unchecked observers_;
// List of current connected gamepad events.
std::vector<GamepadDevice> gamepad_devices_;
DISALLOW_COPY_AND_ASSIGN(GamepadProviderOzone);
};
} // namespace ui
#endif // UI_EVENTS_OZONE_GAMEPAD_GAMEPAD_PROVIDER_OZONE_H_
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