update method

@override (WizardModel, 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
(WizardModel, Cmd?) update(Msg msg) {
  // Handle cancel (Escape key)
  if (msg is KeyMsg &&
      keyMatches(msg.key, [
        KeyBinding(
          keys: ['esc'],
          help: Help(key: 'esc', desc: 'cancel'),
        ),
      ])) {
    return (this, Cmd.message(const WizardCancelledMsg()));
  }

  // Text input steps submit on Enter (the underlying TextInputModel is purely
  // an editor; submission is handled at the parent level).
  if (_currentModel is TextInputModel &&
      msg is KeyMsg &&
      msg.key.type == KeyType.enter) {
    final nextCmd = _nextStep();
    return (this, nextCmd);
  }

  // Check for step completion messages
  if (_isStepCompleteMsg(msg)) {
    final nextCmd = _nextStep();
    return (this, nextCmd);
  }

  // Forward message to current step's model
  if (_currentModel != null) {
    final (newModel, cmd) = _currentModel!.update(msg);
    _currentModel = newModel;
    return (this, cmd);
  }

  return (this, null);
}