react-native-theoplayer/lib/module/internal/adapter/DefaultTextTrackState.js

A THEOplayer video component for react-native.

"use strict";

import { addTextTrackCue, addTrack, findTextTrackByUid, PlayerEventType, removeTextTrackCue, removeTrack, TextTrackEventType, TextTrackMode, TrackListEventType } from 'react-native-theoplayer';
export class DefaultTextTrackState {
  _textTracks = [];
  constructor(_player) {
    this._player = _player;
    _player.addEventListener(PlayerEventType.LOADED_METADATA, this.onLoadedMetadata);
    _player.addEventListener(PlayerEventType.TEXT_TRACK, this.onTextTrack);
    _player.addEventListener(PlayerEventType.TEXT_TRACK_LIST, this.onTextTrackList);
  }
  destroy() {
    this._player.removeEventListener(PlayerEventType.LOADED_METADATA, this.onLoadedMetadata);
    this._player.removeEventListener(PlayerEventType.TEXT_TRACK, this.onTextTrack);
    this._player.removeEventListener(PlayerEventType.TEXT_TRACK_LIST, this.onTextTrackList);
  }
  get textTracks() {
    return this._textTracks;
  }
  set textTracks(tracks) {
    this._textTracks = tracks;
  }
  onLoadedMetadata = event => {
    this._textTracks = event.textTracks;
    this._selectedTextTrack = event.selectedTextTrack;
  };
  onTextTrack = event => {
    const {
      subType,
      cue,
      trackUid
    } = event;
    const track = findTextTrackByUid(this.textTracks, trackUid);
    switch (subType) {
      case TextTrackEventType.ADD_CUE:
        addTextTrackCue(track, cue);
        break;
      case TextTrackEventType.REMOVE_CUE:
        removeTextTrackCue(track, cue);
        break;
    }
  };
  onTextTrackList = event => {
    const {
      subType,
      track
    } = event;
    switch (subType) {
      case TrackListEventType.ADD_TRACK:
        this._textTracks = addTrack(this._textTracks, track);
        break;
      case TrackListEventType.REMOVE_TRACK:
        this._textTracks = removeTrack(this._textTracks, track);
        break;
      case TrackListEventType.CHANGE_TRACK:
        this._textTracks = removeTrack(this._textTracks, track);
        this._textTracks = addTrack(this._textTracks, track);
        if (event.track.mode === TextTrackMode.showing) {
          this._selectedTextTrack = event.track.uid;
        }
        break;
    }
  };
  get selectedTextTrack() {
    return this._selectedTextTrack;
  }
  set selectedTextTrack(trackUid) {
    if (!this.hasValidSource()) {
      return;
    }
    this._selectedTextTrack = trackUid;
    this.textTracks.forEach(track => {
      if (track.uid === trackUid) {
        track.mode = TextTrackMode.showing;
      } else if (track.mode === TextTrackMode.showing) {
        track.mode = TextTrackMode.disabled;
      }
    });
  }
  hasValidSource() {
    return this._player?.source !== undefined;
  }
}
//# sourceMappingURL=DefaultTextTrackState.js.map