// OnWindowShowOrOpen - Called by the WindowShowOrOpenTracker class when UI is shown or created
private static void OnWindowShowOrOpen(IntPtr hwnd, AutomationElement rawEl)
{
bool doWindowOpenedEvent = false;
bool doStructureChangedEvent = false;
lock ( _classLock )
{
if (_listeners != null)
{
// if rawEl is w/in the scope of any listeners then register for events in the new UI
for (int i = 0; i < _listeners.Count; i++)
{
EventListenerClientSide ec = (EventListenerClientSide)_listeners[i];
EventListener l = ec.EventListener;
if (l.EventId == WindowPattern.WindowOpenedEvent)
{
doWindowOpenedEvent = true;
}
if (l.EventId == AutomationElement.StructureChangedEvent)
{
doStructureChangedEvent = true;
}
// Only advise UI contexts if the provider might raise that event.
if (!ShouldAdviseProviders(l.EventId))
{
continue;
}
// Only advise UI contexts if the element is w/in scope of the reference element
if (!ec.WithinScope(rawEl))
{
continue;
}
// Notify the server side
UiaCoreApi.UiaEventAddWindow(ec.EventHandle, hwnd);
}
}
}
// Piggy-back on the listener for Windows hiding or closing to raise WindowClosed and StructureChanged events.
if (doWindowOpenedEvent)
{
if (HwndProxyElementProvider.IsWindowPatternWindow(NativeMethods.HWND.Cast(hwnd)))
{
// Go ahead and raise a client-side only WindowOpenedEvent (if anyone is listening)
AutomationEventArgs e = new AutomationEventArgs(WindowPattern.WindowOpenedEvent);
RaiseEventInThisClientOnly(WindowPattern.WindowOpenedEvent, rawEl, e);
}
}
if (doStructureChangedEvent)
{
// Filter on the control elements. Otherwise, this is extremely noisy. Consider not filtering if there is feedback.
//ControlType ct = (ControlType)rawEl.GetPropertyValue( AutomationElement.ControlTypeProperty );
//if ( ct != null )
{
// Last,raise an event for structure changed
StructureChangedEventArgs e = new StructureChangedEventArgs(StructureChangeType.ChildAdded, rawEl.GetRuntimeId());
RaiseEventInThisClientOnly(AutomationElement.StructureChangedEvent, rawEl, e);
}
}
}