didUpdateWidget method

@override void didUpdateWidget(covariant TextField oldWidget)

Called whenever the widget configuration changes.

Implementation

@override
void didUpdateWidget(TextField oldWidget) {
  super.didUpdateWidget(oldWidget);
  _updateListener();
  if (widget.focusNode != oldWidget.focusNode) {
    if (oldWidget.focusNode == null) {
      _focusNode.dispose();
    }
    _focusNode =
        widget.focusNode ?? FocusNode(id: 'textfield_${widget.hashCode}');
  }
  if (widget.focused != oldWidget.focused) {
    if (widget.focused) {
      _focusNode.requestFocus();
    } else {
      _focusNode.unfocus();
    }
  }
}