// AddWinEventListener - add an event callback for a global listener
private static void AddWinEventListener(Tracker idx, WinEventWrap eventWrapper)
{
// make sure we can queue items
CheckStartCallbackQueueing();
_winEventTrackers[(int)idx] = eventWrapper;
_callbackQueue.PostSyncWorkItem(new WinEventQueueItem(eventWrapper, WinEventQueueItem.StartListening));
}
// StopWinEventTracking is called when we just want to quit (RemoveAllListeners)
private static void StopWinEventTracking()
{
int i;
for (i = 0; i < (int)Tracker.NumEventTrackers; i++)
{
WinEventWrap eventWrapper = _winEventTrackers[i];
if (eventWrapper != null)
{
eventWrapper.StopListening();
_winEventTrackers[i] = null;
}
}
}
// RemoveWinEventListener - remove an event callback for a global listener
private static void RemoveWinEventListener(Tracker idx, Delegate eventCallback)
{
WinEventWrap eventWrapper = _winEventTrackers[(int)idx];
if (eventWrapper == null)
{
return;
}
bool fRemovedLastListener = eventWrapper.RemoveCallback(eventCallback);
if (fRemovedLastListener)
{
_callbackQueue.PostSyncWorkItem(new WinEventQueueItem(eventWrapper, WinEventQueueItem.StopListening));
_winEventTrackers[(int)idx] = null;
CheckStopCallbackQueueing();
}
}
// AddRootListener - Add a listener for an event whose reference is always the
// root and scope is all elements
private static void AddRootListener(Tracker idx, Delegate eventCallback, EventListener l)
{
lock ( _classLock )
{
// Add this listener to client-side store of listeners and give the server
// a chance to enable accessibility for this event
AddListener(AutomationElement.RootElement, eventCallback, l);
// Track WinEvents
WinEventWrap eventWrapper = _winEventTrackers[(int)idx];
if (eventWrapper == null)
{
// First time create a WinEvent tracker and start listening
AddWinEventListener(idx, GetNewRootTracker(idx));
}
else
{
// Subsequent times just add the callback to the existing WinEvent
eventWrapper.AddCallback(eventCallback);
}
}
}
// AddWinEventListener - add an event callback for a global listener
private static void AddWinEventListener(Tracker idx, WinEventWrap eventWrapper)
{
// make sure we can queue items
CheckStartCallbackQueueing();
_winEventTrackers[(int)idx] = eventWrapper;
_callbackQueue.PostSyncWorkItem(new WinEventQueueItem(eventWrapper, WinEventQueueItem.StartListening));
}
//------------------------------------------------------
//
// Constructors
//
//------------------------------------------------------
#region Constructors
internal WinEventQueueItem(WinEventWrap winEventWrap, int state)
{
_winEventWrap = winEventWrap;
_state = state;
}
//------------------------------------------------------
//
// Constructors
//
//------------------------------------------------------
#region Constructors
internal WinEventQueueItem(WinEventWrap winEventWrap, int state)
{
_winEventWrap = winEventWrap;
_state = state;
}
