private void ExecuteSelectPreviousPage()
{
WizardPage previousPage = null;
if (PreviousPageCommand?.CanExecute(CanSelectPreviousPage) == true)
{
PreviousPageCommand?.Execute(CanSelectPreviousPage);
}
if (CurrentPage != null)
{
var eventArgs = new RoutedEventArgs(PreviousEvent);
this.RaiseEvent(eventArgs);
//if (eventArgs.Cancel)
// return;
//check previous page
if (CurrentPage.PreviousPage != null)
{
previousPage = CurrentPage.PreviousPage;
}
else
{
//no previous page defined so use index
var currentIndex = Items.OfType <WizardPage>().ToList().IndexOf(CurrentPage);
var previousPageIndex = currentIndex - 1;
if (previousPageIndex >= 0 && previousPageIndex < Items.OfType <WizardPage>().Count())
{
previousPage = Items.OfType <WizardPage>().ToList()[previousPageIndex];
}
}
}
CurrentPage = previousPage;
}
protected override void OnPropertyChanged(AvaloniaPropertyChangedEventArgs e)
{
base.OnPropertyChanged(e);
if (
e.Property.Name == nameof(CanSelectNextPage) ||
(e.Property.Name == nameof(CanHelp)) ||
(e.Property.Name == nameof(CanFinish)) ||
(e.Property.Name == nameof(CanCancel)) ||
(e.Property.Name == nameof(CanSelectPreviousPage)) ||
(e.Property.Name == nameof(CurrentPage))
)
{
CancelCommand?.CanExecute(CanCancel);
FinishCommand?.CanExecute(CanFinish);
PreviousPageCommand?.CanExecute(CanSelectPreviousPage);
NextPageCommand?.CanExecute(CanSelectNextPage);
HelpCommand?.CanExecute(CanHelp);
UpdateButtonState();
}
}
