blob: 69722ec0efc435b94fe2b644d8b70f2edbb10014 [file] [log] [blame]
// Copyright 2019 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.
#include <memory>
#include "base/component_export.h"
namespace now_playing {
class RemoteCommandCenterDelegateObserver;
// The RemoteCommandCenterDelegate connects with Mac OS's MPRemoteCommandCenter,
// receives remote control events, and propagates those events to listening
// RemoteCommandCenterDelegateObservers. The RemoteCommandCenterDelegate also
// tells the MPRemoteCommandCenter which actions are currently available.
class COMPONENT_EXPORT(NOW_PLAYING) RemoteCommandCenterDelegate {
virtual ~RemoteCommandCenterDelegate();
// Creates and returns an instance of RemoteCommandCenterDelegate. Returns
// null if the current version of Mac OS does not support
// MPRemoteCommandCenter.
static std::unique_ptr<RemoteCommandCenterDelegate> Create();
// Returns the singleton instance.
static RemoteCommandCenterDelegate* GetInstance();
// Observers receive remote commands from the OS (e.g. media key presses).
virtual void AddObserver(RemoteCommandCenterDelegateObserver* observer) = 0;
virtual void RemoveObserver(
RemoteCommandCenterDelegateObserver* observer) = 0;
// Used for toggling whether specific media actions are available.
// TODO(steimel): Support all remote command actions.
virtual void SetCanPlay(bool enable) = 0;
virtual void SetCanPause(bool enable) = 0;
virtual void SetCanStop(bool enable) = 0;
virtual void SetCanPlayPause(bool enable) = 0;
virtual void SetCanGoNextTrack(bool enable) = 0;
virtual void SetCanGoPreviousTrack(bool enable) = 0;
} // namespace now_playing