-// Yield to other processes
-bool wxApp::DoYield(bool onlyIfNeeded, long eventsToProcess)
-{
-#if wxUSE_LOG
- // disable log flushing from here because a call to wxYield() shouldn't
- // normally result in message boxes popping up &c
- wxLog::Suspend();
-#endif // wxUSE_LOG
-
- if (m_isInsideYield)
- {
- if ( !onlyIfNeeded )
- {
- wxFAIL_MSG( wxT("wxYield called recursively" ) );
- }
-
- return false;
- }
-
- m_isInsideYield = true;
- m_eventsToProcessInsideYield = eventsToProcess;
-
- // Run the event loop until it is out of events
- while(1)
- {
- // TODO: implement event filtering using the eventsToProcess mask
-
- wxAutoNSAutoreleasePool pool;
- /* NOTE: It may be better to use something like
- NSEventTrackingRunLoopMode since we don't necessarily want all
- timers/sources/observers to run, only those which would
- run while tracking events. However, it should be noted that
- NSEventTrackingRunLoopMode is in the common set of modes
- so it may not effectively make much of a difference.
- */
- NSEvent *event = [GetNSApplication()
- nextEventMatchingMask:NSAnyEventMask
- untilDate:[NSDate distantPast]
- inMode:NSDefaultRunLoopMode
- dequeue: YES];
- if(!event)
- break;
- [GetNSApplication() sendEvent: event];
- }
-
- /*
- Because we just told NSApplication to avoid blocking it will in turn
- run the CFRunLoop with a timeout of 0 seconds. In that case, our
- run loop observer on kCFRunLoopBeforeWaiting never fires because
- no waiting occurs. Therefore, no idle events are sent.
-
- Believe it or not, this is actually desirable because we do not want
- to process idle from here. However, we do want to process pending
- events because some user code expects to do work in a thread while
- the main thread waits and then notify the main thread by posting
- an event.
- */
- ProcessPendingEvents();
-
-#if wxUSE_LOG
- // let the logs be flashed again
- wxLog::Resume();
-#endif // wxUSE_LOG
-
- m_isInsideYield = false;
-
- return true;
-}
-