NSTimer python code

Question

Hi,
Just wondering if someone could point me in the right
direction ....
I am looking for a good example of the use of NSTimer
with NSrunloop in order to have a background job
run every minute but without tying up the UI by using
the 'sleep' statement.
thanks,

Answer 1

Threading might be a better solution than using a timer, but here's one way to use a timer (sorry, I don't know how to post code here to maintain the whitespace formatting).
def awakeFromNib(self):
self.timer = None
# etc.
def startTimer(self, interval): # your interval is 60 secs?
if self.timer == None:
self.timer = NSTimer.scheduledTimerWithTimeIntervaltarget_selector_userInfo_repeats(interval, self, self.backgroundJob, None, True)
def backgroundJob(self):
Do background job here.
If job takes awhile and you don't want to block the
UI, then call handleEvents periodically (especially
convenient if the background job is in a loop):
while doingJob == True:
# next job iteration... then
self.handleEvents(0.01) # that's 0.01 seconds
def endTimer(self): # when you want the timer to stop
if self.timer != None:
self.timer.invalidate()
self.timer = None
def handleEvents(self, expiration):
app = NSApplication.sharedApplication()
event = app.nextEventMatchingMaskuntilDate_inMode_dequeue( \
NSAnyEventMask, NSDate.dateWithTimeIntervalSinceNow_(expiration), \
NSDefaultRunLoopMode, True)
if event:
# Could put special event handling here
app.sendEvent_(event)
Hope this is what you were looking for!
Jim