private static bool UpdateSourceOfElement(DependencyObject doTarget,
DependencyObject doAncestor,
DependencyObject doOldParent)
{
bool calledOut = false;
PresentationSource realSource = FindSource(doTarget);
PresentationSource cachedSource = CriticalGetPresentationSourceFromElement(doTarget, CachedSourceProperty);
if (cachedSource != realSource)
{
doTarget.SetValue(CachedSourceProperty, new SecurityCriticalDataForMultipleGetAndSet <PresentationSource>(realSource));
SourceChangedEventArgs args = new SourceChangedEventArgs(cachedSource, realSource);
args.RoutedEvent = SourceChangedEvent;
if (InputElement.IsUIElement(doTarget))
{
((UIElement)doTarget).RaiseEvent(args);
}
else if (InputElement.IsContentElement(doTarget))
{
((ContentElement)doTarget).RaiseEvent(args);
}
else
{
((UIElement3D)doTarget).RaiseEvent(args);
}
calledOut = true;
}
return(calledOut);
}
private bool RaiseContextMenuOpeningEvent(IInputElement source, double x, double y, bool userInitiated)
{
ContextMenuEventArgs contextMenuEventArgs = new ContextMenuEventArgs(source, true, x, y);
DependencyObject dependencyObject = source as DependencyObject;
if (userInitiated && dependencyObject != null)
{
if (InputElement.IsUIElement(dependencyObject))
{
((UIElement)dependencyObject).RaiseEvent(contextMenuEventArgs, userInitiated);
}
else if (InputElement.IsContentElement(dependencyObject))
{
((ContentElement)dependencyObject).RaiseEvent(contextMenuEventArgs, userInitiated);
}
else if (InputElement.IsUIElement3D(dependencyObject))
{
((UIElement3D)dependencyObject).RaiseEvent(contextMenuEventArgs, userInitiated);
}
else
{
source.RaiseEvent(contextMenuEventArgs);
}
}
else
{
source.RaiseEvent(contextMenuEventArgs);
}
if (contextMenuEventArgs.Handled)
{
this.RaiseToolTipClosingEvent(true);
return(true);
}
DependencyObject targetElement = contextMenuEventArgs.TargetElement;
if (targetElement != null && ContextMenuService.ContextMenuIsEnabled(targetElement))
{
object contextMenu = ContextMenuService.GetContextMenu(targetElement);
ContextMenu contextMenu2 = contextMenu as ContextMenu;
contextMenu2.SetValue(PopupControlService.OwnerProperty, targetElement);
contextMenu2.Closed += this.OnContextMenuClosed;
if (x == -1.0 && y == -1.0)
{
contextMenu2.Placement = PlacementMode.Center;
}
else
{
contextMenu2.Placement = PlacementMode.MousePoint;
}
this.RaiseToolTipClosingEvent(true);
contextMenu2.SetCurrentValueInternal(ContextMenu.IsOpenProperty, BooleanBoxes.TrueBox);
return(true);
}
return(false);
}
internal static void RaiseAutomationEvents()
{
if (InputElement.IsUIElement(InputManager.ListeningElement))
{
UIElement e = (UIElement)InputManager.ListeningElement;
//Raise InputDiscarded automation event
SynchronizedInputHelper.RaiseAutomationEvent(e.GetAutomationPeer());
}
else if (InputElement.IsContentElement(InputManager.ListeningElement))
{
ContentElement ce = (ContentElement)InputManager.ListeningElement;
//Raise InputDiscarded automation event
SynchronizedInputHelper.RaiseAutomationEvent(ce.GetAutomationPeer());
}
else if (InputElement.IsUIElement3D(InputManager.ListeningElement))
{
UIElement3D e3D = (UIElement3D)InputManager.ListeningElement;
//Raise InputDiscarded automation event
SynchronizedInputHelper.RaiseAutomationEvent(e3D.GetAutomationPeer());
}
}
private bool RaiseContextMenuOpeningEvent(IInputElement source, double x, double y, bool userInitiated)
{
// Fire the event
ContextMenuEventArgs args = new ContextMenuEventArgs(source, true /* opening */, x, y);
DependencyObject sourceDO = source as DependencyObject;
if (userInitiated && sourceDO != null)
{
if (InputElement.IsUIElement(sourceDO))
{
((UIElement)sourceDO).RaiseEvent(args, userInitiated);
}
else if (InputElement.IsContentElement(sourceDO))
{
((ContentElement)sourceDO).RaiseEvent(args, userInitiated);
}
else if (InputElement.IsUIElement3D(sourceDO))
{
((UIElement3D)sourceDO).RaiseEvent(args, userInitiated);
}
else
{
source.RaiseEvent(args);
}
}
else
{
source.RaiseEvent(args);
}
if (!args.Handled)
{
// No one handled the event, auto show any available ContextMenus
// Saved from the bubble up the tree where we looked for a set ContextMenu property
DependencyObject o = args.TargetElement;
if ((o != null) && ContextMenuService.ContextMenuIsEnabled(o))
{
// Retrieve the value
object menu = ContextMenuService.GetContextMenu(o);
ContextMenu cm = menu as ContextMenu;
cm.SetValue(OwnerProperty, o);
cm.Closed += new RoutedEventHandler(OnContextMenuClosed);
if ((x == -1.0) && (y == -1.0))
{
// We infer this to mean that the ContextMenu was opened with the keyboard
cm.Placement = PlacementMode.Center;
}
else
{
// If there is a CursorLeft and CursorTop, it was opened with the mouse.
cm.Placement = PlacementMode.MousePoint;
}
// Clear any open tooltips
RaiseToolTipClosingEvent(true /*reset */);
cm.SetCurrentValueInternal(ContextMenu.IsOpenProperty, BooleanBoxes.TrueBox);
return(true); // A menu was opened
}
return(false); // There was no menu to open
}
// Clear any open tooltips since someone else opened one
RaiseToolTipClosingEvent(true /*reset */);
return(true); // The event was handled by someone else
}
