'''

Usage:

def timerTest():

    print 'Hello World!'

#create and start a timer

timer = Timer(30, timerTest, repeat=True)

timer.start()

#To stop the timer

timer.stop()

'''

import threading

try:

    from maya.utils import executeInMainThreadWithResult

except:

    executeInMainThreadWithResult = None

class Timer(threading.Thread):

    def __init__(self, interval, function, args=[], kwargs={}, repeat=True):

        self.interval = interval

        self.function = function

        self.repeat = repeat

        self.args = args

        self.kwargs = kwargs

        self.event = threading.Event()

        threading.Thread.__init__(self)

    def run(self):

        def _mainLoop():

            self.event.wait(self.interval)

            if not self.event.isSet():

                if executeInMainThreadWithResult:

                    executeInMainThreadWithResult(self.function, *self.args, **self.kwargs)

                else:

                    self.function(*self.args, **self.kwargs)

        if self.repeat:

            while not self.event.isSet():

                _mainLoop()

        else:

            _mainLoop()

            self.stop()

    def start(self):

        self.event.clear()

        threading.Thread.start(self)

    def stop(self):

        self.event.set()

        threading.Thread.__init__(self)