private void Model_SelectedPageChanged(object sender, SelectedPageEventArgs e)
{
if (_model.CurrentPagePosition == e.PagePosition)
{
return;
}
if (_model.CurrentPage.IsLastPage && _model.CurrentPage.IsComplete)
{
return;
}
if (!_model.CanMoveToPage(e.PagePosition, out var message))
{
if (!string.IsNullOrEmpty(message))
{
MessageBox.Show(message, _model.WindowTitle, MessageBoxButton.OK, MessageBoxImage.Information);
}
return;
}
_model?.SetCurrentPage(e.PagePosition);
}
