WIP idea for future GetTextField

getx_textfield_utils.dart

/// roipeker 2020

/// Easy way to bind a RxString to a TextEditingController.

abstract class SingleTextController implements DisposableInterface {
  TextEditingController _textController;
  Worker _worker;
  RxString _rx;

  TextEditingController _buildController() => TextEditingController();

  TextEditingController get textController {
    _textController ??= _buildController();
    return _textController;
  }

  onClose() {
    _worker?.dispose();
    _textController?.removeListener(_onTextChanged);
    _textController?.dispose();
  }

  void bindRx(RxString val) {
    _rx = val;
    textController.addListener(_onTextChanged);
    _worker = ever(
        _rx,
        (newText) => _textController.value =
            _textController.value.copyWith(text: newText));
  }

  void _onTextChanged() => _rx.value = _textController.text;
}

class TextController extends GetxController with SingleTextController {
  TextController(RxString value) {
    bindRx(value);
    textController.text = '$value';
  }
}