objective c - updateTrackingAreas: override only works for the first 2 times? -


on el capitan in xcode 7 beta using swift 2.0, subclassed nsview use prototype view of nscollectionview's item view, , override updatetrackingareas: method mouse tracking. nscollectionview inside nspopover.

it seems first 2 times updatetrackingareas: called, debug log shows. code following:

override func updatetrackingareas() {      swift.print("updatetrackingareas:")      if trackingarea != nil {         self.removetrackingarea(trackingarea!)     }      trackingarea = nstrackingarea(         rect: self.bounds,         options: [nstrackingareaoptions.mouseenteredandexited, nstrackingareaoptions.activealways],         owner: self,         userinfo: nil     )      if trackingarea != nil {         self.addtrackingarea(trackingarea!)     }      var mouselocation = self.window?.mouselocationoutsideofeventstream      mouselocation = self.convertpoint(mouselocation!, fromview: nil)      if cgrectcontainspoint(self.bounds, mouselocation!) {         mouseentered(nsevent())     } else {         mouseexited(nsevent())     }      super.updatetrackingareas() }

the first 2 times when popover opened, can see console log shows updatetrackingareas:. tracking failed , no logs either.

edit:

when commented out part like:

//var mouselocation = self.window?.mouselocationoutsideofeventstream  mouselocation = self.convertpoint(mouselocation!, fromview: nil)  if cgrectcontainspoint(self.bounds, mouselocation!) {     mouseentered(nsevent()) } else {     mouseexited(nsevent()) }

the problem no longer exists.

and following code makes no differences:

if let window = self.window {     var mouselocation = window.mouselocationoutsideofeventstream     mouselocation = self.convertpoint(mouselocation, fromview: nil)     if let event = nsapplication.sharedapplication().currentevent {         if nspointinrect(mouselocation, self.bounds) {             mouseentered(event)         } else {             mouseexited(event)        }    } }

edit 2:

ok, reinstall os x yosemite , compiled again xcode 7 beta 1. problem no longer exists. might bug of el capitan. i'll report apple. thank all.

you're passing newly-created event instance mouseentered() , mouseexited(). realize because can't pass nil in swift variant of method perhaps should pass current event instead (nsapplication , nswindow both have currentevent() method). have tried this?


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