update method

@override (CursorModel, Cmd?) update(Msg msg)

Updates the component state in response to a message.

Returns the updated component (often this) and an optional command.

Implementation

@override
(CursorModel, Cmd?) update(Msg msg) {
  switch (msg) {
    case _InitialBlinkMsg():
      if (_mode != CursorMode.blink || !_focus) {
        return (this, null);
      }
      return (this, _blinkCmd());

    case FocusMsg(focused: true):
      return focus();

    case FocusMsg(focused: false):
      return (blur(), null);

    case CursorBlinkMsg(:final id, :final tag):
      // Only accept blink messages for this cursor
      if (_mode != CursorMode.blink || !_focus) {
        return (this, null);
      }
      if (id != _id || tag != _blinkTag) {
        return (this, null);
      }

      // Toggle blink state
      final newCursor = copyWith(blink: !_blink, blinkTag: _blinkTag + 1);
      return (newCursor, newCursor._blinkCmd());

    case _BlinkCanceledMsg():
      return (this, null);

    default:
      return (this, null);
  }
}