showBackAnimation property

set showBackAnimation (bool value)

Implementation

set showBackAnimation(bool value) {
  if (_showBackAnimation != value) {
    _showBackAnimation = value;
    if (_showBackAnimation) {
      _backAnimationPulledExtent = _pulledExtent - _indicatorExtent;
      _backAnimation = Tween(
              begin: 0.0,
              end: _backAnimationLength + _backAnimationPulledExtent)
          .animate(_backController);
      _backController.reset();
      _backController.forward();
    }
  }
}