handleMethodCall method

Implementation

Future<dynamic> handleMethodCall(MethodCall call) async {
  if (!supported) return;
  switch (call.method) {
    case 'speak':
      final text = call.arguments as String?;
      if (awaitSpeakCompletion) {
        _speechCompleter = Completer();
      }
      _speak(text);
      if (awaitSpeakCompletion) {
        return _speechCompleter?.future;
      }
      break;
    case 'awaitSpeakCompletion':
      awaitSpeakCompletion = (call.arguments as bool?) ?? false;
      return 1;
    case 'stop':
      _stop();
      return 1;
    case 'pause':
      _pause();
      return 1;
    case 'setLanguage':
      final language = call.arguments as String?;
      _setLanguage(language);
      return 1;
    case 'getLanguages':
      return _getLanguages();
    case 'getVoices':
      return getVoices();
    case 'setVoice':
      final tmpVoiceMap =
          Map<String, String>.from(call.arguments as LinkedHashMap);
      return _setVoice(tmpVoiceMap);
    case 'setSpeechRate':
      final rate = call.arguments as num;
      _setRate(rate);
      return 1;
    case 'setVolume':
      final volume = call.arguments as num?;
      _setVolume(volume);
      return 1;
    case 'setPitch':
      final pitch = call.arguments as num?;
      _setPitch(pitch);
      return 1;
    case 'isLanguageAvailable':
      final lang = call.arguments as String?;
      return _isLanguageAvailable(lang);
    default:
      throw PlatformException(
          code: 'Unimplemented',
          details: "The flutter_tts plugin for web doesn't implement "
              "the method '${call.method}'");
  }
}