public static BlockNavigatorInternal CreateNavigator(FrameworkElement element)
{
var nav = new BlockNavigatorInternal(element);
BlockNavigatorProperty.SetBlockNavigator(element, nav);
return(nav);
}
public static FrameworkElement FindBlockNavigatorElement(FrameworkElement elm)
{
var searchElm = elm;
DependencyObject GetParent(FrameworkElement child)
{
return(child.Parent ??
child.TemplatedParent ??
System.Windows.Media.VisualTreeHelper.GetParent(child));
}
// if we query the navigator on a nested element, make sure we get the parent navigator and not the self
if (BlockNavigatorProperty.GetIsNestedNavigation(searchElm) && GetParent(searchElm) != null)
{
searchElm = (FrameworkElement)GetParent(searchElm);
}
while (true)
{
var parent = GetParent(searchElm);
if (parent == null)
{
return(searchElm);
}
var isNestedNavigator = BlockNavigatorProperty.GetIsNestedNavigation(searchElm);
if (isNestedNavigator)
{
return(searchElm);
}
searchElm = (FrameworkElement)parent;
}
}
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);
};
}
private void OnFocusChanged(FrameworkElement elm, bool animate = true)
{
_focusElement?.Dispatcher.Invoke(() => {
BlockNavigatorProperty.SetIsFocused(_focusElement, false);
_focusElement?.RaiseEvent(new RoutedEventArgs(BlockNavigatorProperty.CursorExitEvent, _focusElement));
});
elm.Dispatcher.Invoke(() => {
_focusElement = elm;
BlockNavigatorProperty.SetIsFocused(_focusElement, true);
_focusElement.RaiseEvent(new RoutedEventArgs(BlockNavigatorProperty.CursorEnterEvent, _focusElement));
_cursor.SetFocus(_blocks[_focusElement], animate);
_cursor.Visibility = BlockNavigatorProperty.GetHideCursor(_focusElement) || IsEnabled == false
? Visibility.Hidden
: Visibility.Visible;
});
}
private void OnConfirmClick(int player, GamePadState state)
{
_focusElement?.Dispatcher.Invoke(() => {
OwnerElement?.RaiseEvent(new RoutedEventArgs(BlockNavigatorProperty.ConfirmClickEvent, OwnerElement));
_focusElement?.RaiseEvent(new RoutedEventArgs(BlockNavigatorProperty.ConfirmClickEvent, _focusElement));
if (BlockNavigatorProperty.GetSimulateMouse(_focusElement))
{
SimulateMouse(_focusElement);
}
if (BlockNavigatorProperty.GetIsNestedNavigation(_focusElement))
{
ActivateNestedNavigator(_focusElement);
}
});
}
private void SetInitialFocus(FrameworkElement elm)
{
var initialFocus = BlockNavigatorProperty.GetInitialFocus(elm);
if (initialFocus)
{
_focusElement = elm;
_hasManualFocus = true;
OnFocusChanged(elm, false);
}
else if (_hasManualFocus == false && _focusElement == null)
{
_focusElement = elm;
OnFocusChanged(elm, false);
}
}
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();
}
}
