Listening to player events

class ViewController: UIViewController, FPFlowplayerDelegate {

    let flowplayer: FPFlowplayer!

	override func viewDidLoad() {
		super.viewDidLoad()

        ...

		flowplayer.delegate = self
	}
}

/**
This callback is called when the player is in a idle state.
- Parameter event: The payload of the event.
- Note: Callback for __FPIdleEvent__.
*/
func onIdle(event: FPIdleEvent)

/**
This callback is called when the player has loaded
the provided media item and is ready to be played.
- Parameter event: The payload of the event.
- Note: Callback for __FPReadyEvent__.
*/
func onReady(event: FPReadyEvent)

/**
This callback is called when the player start / resumes media playback.
- Parameter event: The payload of the event.
- Note: Callback for __FPPlayEvent__.
*/
func onPlay(event: FPPlayEvent)

/**
This callback is called when the player pauses the media playback.
- Parameter event: The payload of the event.
- Note: Callback for __FPPauseEvent__.
*/
func onPause(event: FPPauseEvent)

/**
This callback is called when the player in a buffered state,
indicating that the provided media item is loading or being fetched.
- Parameter event: The payload of the event.
- Note: Callback for __FPBufferEvent__.
*/
func onBuffer(event: FPBufferEvent)

/**
This callback is called when the player has finished
the media playback.
- Parameter event: The payload of the event.
- Note: Callback for __FPCompleteEvent__.
*/
func onComplete(event: FPCompleteEvent)

/**
Called when the player has been muted. This callback can be triggered by the
*mute(_:)* method of __FPFlowplayer__ or by the mute button on the Apple TV remote.
- Parameter event: The payload of the event.
- Note: Callback for __FPMuteEvent__.
*/
func onMute(event: FPMuteEvent)

/**
Called when the player's sound volume changes. This callback can be triggered by
the *setVolume(_:)* method of __FPFlowplayer__ or by the volume buttons on the Apple TV remote.
- Parameter event: The payload of the event.
- Note: Callback for __FPVolumeEvent__.
*/
func onVolume(event: FPVolumeEvent)

/**
Called when the media playback rate / speed changes. This callback can be triggered by
the *setSpeed(_:)* method of __FPFlowplayer__.
- Parameter event: The payload of the event.
- Note: Callback for __FPSpeedEvent__.
*/
func onSpeed(event: FPSpeedEvent)

/**
This callback is called when the audio assets have been fetched
and loaded for the current media item.
- Parameter event: The payload of the event.
- Note: Callback for __FPAudioTracksEvent__.
*/
func onAudioTracksLoaded(event: FPAudioTracksEvent)

/**
Called when the audio for the current media playback has changed.
- Parameter event: The payload of the event.
- Callback for __FPAudioTrackSelectEvent__.
*/
func onAudioTrackSelect(event: FPAudioTrackSelectEvent)

/**
Called when the subtitle of the current media playback has changed.
- Parameter event: The payload of the event.
- Note: Callback for __FPSubtitleTrackSelectEvent__.
*/
func onSubtitleTrackSelect(event: FPSubtitleTrackSelectEvent)

/**
This callback is called when the subtitle assets have been fetched
and loaded for the current media item.
- Parameter event: The payload of the event.
- Note: Callback for __FPSubtitleTracksEvent__.
*/
func onSubtitleTracksLoaded(event: FPSubtitleTracksEvent)

/**
This callback will be only triggered for __FPFlowplayerMedia__ media item.
Will return all `Flowplayer` metadata for the current media item.
- Parameter event: The payload of the event.
- Note: Callback for __FPOvpMetadataEvent__.
*/
func onOvpMetadata(event: FPOvpMetadataEvent)

/**
Triggered when a player or media  error occurs.
- Parameter event: The payload of the event.
- Note: Callback for __FPErrorEvent__.
*/
func onError(event: FPErrorEvent)

/**
Triggered when an ad break started.
- Parameter event: The payload of the event.
- Note: Callback for __FPAdBreakStartEvent__.
*/
func onAdBreakStart(event: FPAdBreakStartEvent)

/**
Triggered when an ad break has completed.
- Parameter event: The payload of the event.
- Note: Callback for__FPAdBreakCompleteEvent__.
*/
func onAdBreakComplete(event: FPAdBreakCompleteEvent)

/**
Triggered when an single ad has started.
- Parameter event: The payload of the event.
- Note: Callback for __FPAdStartEvent__.
*/
func onAdStart(event: FPAdStartEvent)

/**
Triggered when an single ad pauses.
- Parameter event: The payload of the event.
- Note: Callback for __FPAdPauseEvent__.
*/
func onAdPause(event: FPAdPauseEvent)

/**
Triggered when an single ad resumes.
- Parameter event: The payload of the event.
- Note: Callback for __FPAdResumeEvent__.
*/
func onAdResume(event: FPAdResumeEvent)

/**
Triggered when the user clicks on an ad.
- Parameter event: The payload of the event.
- Note: Callback for __FPAdClickEvent__.
*/
func onAdClick(event: FPAdClickEvent)

/**
Triggered when an user skips an ad.
- Parameter event: The payload of the event.
- Note: Callback for __FPAdSkipEvent__.
*/
func onAdSkip(event: FPAdSkipEvent)

/**
Triggered when a single ad has completed.
- Parameter event: The payload of the event.
- Note: Callback for __FPAdCompleteEvent__.
*/
func onAdComplete(event: FPAdCompleteEvent)

/**
Triggered when an error occurs with an ad.
- Parameter event: The payload of the event.
- Note: Callback for __FPAdErrorEvent__.
*/
func onAdError(event: FPAdErrorEvent)