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// Copyright 2019 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef COMPONENTS_SYSTEM_MEDIA_CONTROLS_MAC_NOW_PLAYING_INFO_CENTER_DELEGATE_H_
#define COMPONENTS_SYSTEM_MEDIA_CONTROLS_MAC_NOW_PLAYING_INFO_CENTER_DELEGATE_H_
#include <optional>
#include "base/timer/timer.h"
#include "components/system_media_controls/system_media_controls.h"
@class NowPlayingInfoCenterDelegateCocoa;
namespace system_media_controls::internal {
// Wraps an NSObject which interfaces with the MPNowPlayingInfoCenter.
class NowPlayingInfoCenterDelegate {
public:
NowPlayingInfoCenterDelegate();
NowPlayingInfoCenterDelegate(const NowPlayingInfoCenterDelegate&) = delete;
NowPlayingInfoCenterDelegate& operator=(const NowPlayingInfoCenterDelegate&) =
delete;
~NowPlayingInfoCenterDelegate();
// Part of the implementation of SystemMediaControls.
void SetPlaybackStatus(SystemMediaControls::PlaybackStatus status);
void SetTitle(const std::u16string& title);
void SetArtist(const std::u16string& artist);
void SetAlbum(const std::u16string& album);
void SetThumbnail(const SkBitmap& bitmap);
void SetPosition(const media_session::MediaPosition& position);
void ClearMetadata();
private:
// Starts timer to update the current playback status and position. This
// debounce timer is mandatory as the now playing widget doesn't work properly
// when updated multiple times in a row.
void StartTimer();
// Updates the current playback status and position depending on most recently
// received playback status and position.
void UpdatePlaybackStatusAndPosition();
// Stores the most recently received playback status.
std::optional<SystemMediaControls::PlaybackStatus> playback_status_;
// Stores the most recently received position.
std::optional<media_session::MediaPosition> position_;
// Calls UpdatePlaybackStatusAndPosition() when the timer expires.
std::unique_ptr<base::OneShotTimer> timer_ =
std::make_unique<base::OneShotTimer>();
NowPlayingInfoCenterDelegateCocoa* __strong
now_playing_info_center_delegate_cocoa_;
};
} // namespace system_media_controls::internal
#endif // COMPONENTS_SYSTEM_MEDIA_CONTROLS_MAC_NOW_PLAYING_INFO_CENTER_DELEGATE_H_
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