run method

@override Future<void> run()

the SimpleFrameApp subclass implements application-specific code

Implementation

@override
Future<void> run() async {
  currentState = ApplicationState.running;
  if (mounted) setState(() {});

  try {
    // Open the file picker
    FilePickerResult? result = await FilePicker.platform.pickFiles(
      type: FileType.custom,
      allowedExtensions: ['txt'],
    );

    if (result != null) {
      File file = File(result.files.single.path!);

      // Read the file content and split into lines
      String content = await file.readAsString();
      _textChunks.clear();

      // Update the UI
      setState(() {
        // strip out any carriage-return characters if the file is CRLF
        content = content.replaceAll(RegExp('\r'), '');
        _textChunks.addAll(content.split('\n'));
        _currentLine = 0;
      });

      // and send initial text to Frame
      await sendTextToFrame(_textChunks[_currentLine]);
    }
    else {
      currentState = ApplicationState.ready;
      if (mounted) setState(() {});
    }
  } catch (e) {
    _log.fine('Error executing application logic: $e');
    currentState = ApplicationState.ready;
    if (mounted) setState(() {});
  }
}