public void ActivateNestedNavigator(FrameworkElement focusElm)
{
IsEnabled = false;
var nav = BlockNavigatorProperty.GetBlockNavigator(focusElm);
nav.ParentNavigator = this;
nav.IsEnabled = true;
OwnerElement.RaiseEvent(new RoutedEventArgs(BlockNavigatorProperty.NavigationExitEvent, OwnerElement));
nav.OwnerElement.RaiseEvent(new RoutedEventArgs(BlockNavigatorProperty.NavigationEnterEvent, nav.OwnerElement));
}
public static void OnDisableBlockNavigatorChanged(FrameworkElement a, bool value)
{
var nav = BlockNavigatorProperty.GetBlockNavigator(a);
if (nav == null)
{
var elm = FindBlockNavigatorElement(a);
nav = BlockNavigatorProperty.GetBlockNavigator(elm);
}
nav.IsEnabled = !value;
nav.ExplicitDisabled = value;
}
public static void RegisterNestedNavigationBlock(FrameworkElement frameworkElement)
{
// register on parent navigator that is
RegisterNavigationBlock(frameworkElement);
var navigator = BlockNavigatorProperty.GetBlockNavigator(frameworkElement);
if (navigator == null)
{
navigator = CreateNavigator(frameworkElement);
navigator.IsEnabled = false;
}
var parentNavigator = FindBlockNavigatorElement(frameworkElement);
navigator.ParentNavigator = BlockNavigatorProperty.GetBlockNavigator(parentNavigator);
}
public static void RegisterNavigationBlock(FrameworkElement frameworkElement)
{
var parentElement = FindBlockNavigatorElement(frameworkElement);
var nav = BlockNavigatorProperty.GetBlockNavigator(parentElement);
if (nav == null)
{
nav = CreateNavigator(parentElement);
nav.IsEnabled = true;
}
// bugfix: The control will not be part of the correct hierarchy until it's fully loaded
frameworkElement.Loaded += delegate {
nav.OnAddBlock(frameworkElement);
};
}
public static void OnFocusableChanged(FrameworkElement a, bool value)
{
void f(FrameworkElement p)
{
var parent = FindBlockNavigatorElement(a);
if (parent == a)
{
parent = FindBlockNavigatorElement((FrameworkElement)a.Parent);
}
var nav = BlockNavigatorProperty.GetBlockNavigator(parent);
if (value == false)
{
nav._blocks.Remove(a);
}
else
{
var point = a
.TransformToAncestor(parent)
.Transform(new Point(0, 0));
nav._blocks[a] = new Rect(
point.X,
point.Y,
a.ActualWidth,
a.ActualHeight
);
}
}
if (a.IsLoaded)
{
f(a);
}
else
{
new Await(a, f).Loaded();
}
}