void HandleActivatable(ILaunchChooser <TResult> handler, object storedClientId)
{
var activatable = handler as IActivate;
EventHandler <ActivationEventArgs> onActivate = null;
onActivate = (s, e) => {
if (!eventHandled && e.WasInitialized && string.Compare(storedClientId.ToString(), activator.GetKey(handler, string.Empty)) == 0)
{
handler.Handle(lastResult);
lastResult = null;
eventHandled = true;
}
if (activatable != null)
{
activatable.Activated -= onActivate;
}
};
if (activatable != null && !activatable.IsActive)
{
activatable.Activated += onActivate;
}
else
{
onActivate(null, new ActivationEventArgs {
WasInitialized = true
});
}
}
void HandleView(object view, object storedClientId, ILaunchChooser <TResult> handler)
{
var frameworkElement = view as FrameworkElement;
RoutedEventHandler onLoaded = null;
onLoaded = (s, e) => {
if (!eventHandled && string.Compare(storedClientId.ToString(), activator.GetKey(handler, string.Empty)) == 0)
{
handler.Handle(lastResult);
lastResult = null;
eventHandled = true;
}
frameworkElement.Loaded -= onLoaded;
};
if (frameworkElement != null)
{
frameworkElement.Loaded += onLoaded;
}
else
{
onLoaded(null, null);
}
}
void HandleViewAware(ILaunchChooser <TResult> handler, IViewAware viewAware, object storedClientId)
{
EventHandler <ViewAttachedEventArgs> onViewAttached = null;
onViewAttached = (s, e) => {
HandleView(e.View, storedClientId, handler);
viewAware.ViewAttached -= onViewAttached;
};
viewAware.ViewAttached += onViewAttached;
}
void TryHandleAtLatestTime(ILaunchChooser <TResult> handler, object storedClientId)
{
var viewAware = handler as IViewAware;
if (viewAware != null)
{
var defaultView = viewAware.GetView(ViewLocator.DefaultContext);
if (defaultView == null)
{
HandleViewAware(handler, viewAware, storedClientId);
}
else
{
HandleView(defaultView, storedClientId, handler);
}
}
else
{
HandleActivatable(handler, storedClientId);
}
}
