/// <summary>
/// Initialize the popup control
/// It is smart enough to handle multiple calls
/// </summary>
private void InitializePopup()
{
if (popup == null)
{
// Add overlay which is the size of RootVisual
overlay = new Canvas
{
Background = new SolidColorBrush(Colors.Transparent),
Width = RootVisual.ActualWidth,
Height = RootVisual.ActualHeight
};
overlay.Children.Add(this);
// Dismiss the context menu if clicked else where
overlay.AddHandler(MouseLeftButtonUpEvent
, new MouseButtonEventHandler(OnOverlayMouseButtonUp)
, true);
// Initialize popup to draw the context menu over all controls
popup = new Popup { Child = overlay };
// NOTE: Tried to add to visual tree,
// to make popup orientation aware, but did't work
//afterTemplateApplied.Enqueue(() =>
// {
// var panel = FindPanel(Owner);
// if (panel != null)
// {
// panel.Children.Add(popup);
// }
// });
}
}
