private static void ProcessSources()
{
if (IsAutoActivationEnabled == false)
{
return;
}
var theme = ApplicationThemeCore;
foreach (var source in PresentationTreeUtils.EnumerateVisualRoots())
{
var freSource = source as FrameworkElement;
if (freSource == null)
{
continue;
}
var parent = freSource.Parent;
var themeTarget = parent is Popup || parent is Window ? parent : freSource;
EnsureTheme(themeTarget, theme);
}
foreach (var enumeratePopup in PresentationTreeUtils.EnumeratePopups())
{
EnsureTheme(enumeratePopup, theme);
}
}
private static void CompositionTargetOnRendering(object sender, EventArgs eventArgs)
{
foreach (var visualRoot in PresentationTreeUtils.EnumerateVisualRoots().OfType <UIElement>())
{
EnsureService(visualRoot);
}
}
private static DraggableMouseInteraction GetMouseInteraction(MouseEventArgs e)
{
var uie = PresentationTreeUtils.GetUIElementEventSource(e.OriginalSource);
return(uie?.GetVisualAncestorsAndSelf()
.OfType <UIElement>()
.Select(u => u.GetService <DraggableMouseInteractionService>())
.SkipNull()
.SelectMany(s => s._draggableMouseCollection)
.Where(d => d.WillHandleEvent(e))
.LastMaxElementOrDefault(d => d.HandlerPriority));
}
private void QueryCloseOnDown(MouseButtonEventArgsInt e)
{
var uieSource = PresentationTreeUtils.GetUIElementEventSource(e.OriginalSource);
var inside = IsInsideClick(uieSource, e);
if (inside)
{
return;
}
QueryCloseCore(new MouseButtonEventPopupCloseReason(e.OriginalArgs));
}
private static void OnMouseDown(object sender, MouseButtonEventArgs e)
{
if (e.Handled && e.ClickCount != 1)
{
return;
}
var element = (DependencyObject)sender;
var uieSource = PresentationTreeUtils.GetUIElementEventSource(e.OriginalSource);
if (uieSource.GetVisualAncestors().TakeWhile(p => !ReferenceEquals(p, element)).Any(GetNonSelectable))
{
return;
}
var selectionScope = GetSelectionScope(element);
if (selectionScope == null)
{
return;
}
selectionScope.SelectedItem = GetSelectTarget(element) ?? element;
}
public static IEnumerable <DependencyObject> GetVisualAncestorsAndSelf(this DependencyObject depObj)
{
return(PresentationTreeUtils.GetVisualAncestors(depObj, true));
}
public static T GetLogicalParent <T>(this DependencyObject depObj) where T : DependencyObject
{
return(PresentationTreeUtils.GetLogicalParent(depObj) as T);
}
public static DependencyObject GetLogicalParent(this DependencyObject depObj)
{
return(PresentationTreeUtils.GetLogicalParent(depObj));
}
public static IEnumerable <DependencyObject> GetLogicalAncestors(this DependencyObject depObj)
{
return(PresentationTreeUtils.GetLogicalAncestors(depObj, false));
}
public static IEnumerable <T> GetLogicalAncestors <T>(this DependencyObject depObj) where T : DependencyObject
{
return(PresentationTreeUtils.GetLogicalAncestors(depObj, false).OfType <T>());
}
private MouseButtonEventInfo GetMouseDownInfo(MouseButtonEventArgsInt e)
{
var uie = PresentationTreeUtils.GetUIElementEventSource(e.OriginalSource);
return(new MouseButtonEventInfo(uie, IsInsideClick(uie, e)));
}
public static bool IsKeyboardFocusWithin(DependencyObject dependencyObject)
{
return(GetKeyboardFocusedElement() is DependencyObject keyboardFocusedElement && PresentationTreeUtils.IsWithinTree(dependencyObject, keyboardFocusedElement));
}
internal static bool IsInLiveTree(this FrameworkElement fre)
{
return(PresentationTreeUtils.EnumerateVisualRoots().Where(e => e.Dispatcher.CheckAccess()).Any(vr => ReferenceEquals(vr, fre) || vr?.IsVisualAncestorOf(fre) == true));
}
public static DependencyObject GetParent(this DependencyObject depObj, TreeEnumerationStrategy strategy)
{
return(PresentationTreeUtils.GetParent(depObj, strategy));
}
public static IEnumerable <DependencyObject> GetVisualDescendantsAndSelf(this DependencyObject parent, Func <DependencyObject, bool> excludeSubtree)
{
return(PresentationTreeUtils.GetVisualDescendants(parent, true, excludeSubtree));
}
public static IEnumerable <T> GetVisualDescendantsAndSelf <T>(this DependencyObject parent) where T : DependencyObject
{
return(PresentationTreeUtils.GetVisualDescendants(parent, true, null).OfType <T>());
}
public static IEnumerable <DependencyObject> GetVisualDescendantsAndSelf(this DependencyObject parent)
{
return(PresentationTreeUtils.GetVisualDescendants(parent, true, null));
}
public static IEnumerable <T> GetVisualChildrenAndSelf <T>(this DependencyObject parent) where T : DependencyObject
{
return(PresentationTreeUtils.GetVisualChildren(parent, true).OfType <T>());
}
public static IEnumerable <T> GetVisualAncestorsAndSelf <T>(this DependencyObject depObj) where T : DependencyObject
{
return(PresentationTreeUtils.GetVisualAncestors(depObj, true).OfType <T>());
}
public static IEnumerable <DependencyObject> GetVisualChildren(this DependencyObject parent)
{
return(PresentationTreeUtils.GetVisualChildren(parent, false));
}
public static IEnumerable <DependencyObject> GetAncestorsAndSelf(this DependencyObject depObj, TreeEnumerationStrategy strategy)
{
return(PresentationTreeUtils.GetAncestors(depObj, true, strategy));
}
public static T GetParent <T>(this DependencyObject depObj, TreeEnumerationStrategy strategy) where T : DependencyObject
{
return(PresentationTreeUtils.GetParent(depObj, strategy) as T);
}
public static IEnumerable <T> GetAncestorsAndSelf <T>(this DependencyObject depObj, TreeEnumerationStrategy strategy) where T : DependencyObject
{
return(PresentationTreeUtils.GetAncestors(depObj, true, strategy).OfType <T>());
}
