/// <summary>
/// Determines, whether this navigator or one of its parents can
/// navigate to the destination specified in <paramref name="destination"/>.
/// </summary>
/// <param name="destination">the name of the navigation destination</param>
/// <returns>true, if this navigator can navigate to the destination.</returns>
public virtual bool CanNavigateTo(string destination)
{
if (_results.Contains(destination))
{
return(true);
}
return((ParentNavigator != null) ? ParentNavigator.CanNavigateTo(destination) : false);
}
public void NavigateBack()
{
if (ParentNavigator == null)
{
return;
}
IsEnabled = false;
var nav = ParentNavigator;
nav.IsEnabled = true;
nav.SetFocus(ParentNavigator.GetFocus(), false);
OwnerElement.RaiseEvent(new RoutedEventArgs(BlockNavigatorProperty.NavigationExitEvent, OwnerElement));
nav.OwnerElement.RaiseEvent(new RoutedEventArgs(BlockNavigatorProperty.NavigationEnterEvent, nav.OwnerElement));
}
/// <summary>
/// Redirects user to a URL mapped to specified result name.
/// </summary>
/// <param name="destination">Name of the result.</param>
/// <param name="sender">the instance that issued this request</param>
/// <param name="context">The context to use for evaluating the SpEL expression in the Result.</param>
public virtual void NavigateTo(string destination, object sender, object context)
{
IResult result = GetResult(destination);
if (result == null)
{
if (ParentNavigator != null)
{
ParentNavigator.NavigateTo(destination, sender, context);
return;
}
HandleUnknownDestination(destination, sender, context);
return;
}
// If no context, 'sender' is context
if (context == null)
{
context = sender;
}
result.Navigate(context);
}
