testing event coalescing in robofont subscriber ... this one tries to wait until all button presses are done before firing

coalescingTest-hold.py

from mojo.subscriber import Subscriber, registerRoboFontSubscriber
from mojo.subscriber import registerSubscriberEvent, roboFontSubscriberEventRegistry
from mojo.subscriber import WindowController
from mojo.events import postEvent
from vanilla import Window, Button


coalescingTestKey = 'okay.coalescingTest'

class coalescingTest(Subscriber, WindowController):

    debug = True
    incrementCache = []

    def build(self):
        self.i = 0
        self.w = Window((0, 0, 150, 30), 'Blank')
        self.w.button = Button((0, 0, -0, -0), 'Test '+str(self.i), callback=self.test)
        self.w.open()

    def test(self, sender):
        postEvent(f'{coalescingTestKey}.testHold')
        postEvent(f'{coalescingTestKey}.testDidIncrement', increment=self.i)
        print('event posted', self.i)
        self.i += 1
        self.w.button.setTitle('Test '+str(self.i))
        self.hold = True
        # print('self.hold = True')

    testHoldDelay = 0.5

    def testHold(self, sender):
        self.hold = False
        postEvent(f'{coalescingTestKey}.testDidIncrement', increment=None)
        # print('self.hold = False')

    def testDidIncrement(self, notification):
        for event in notification['lowLevelEvents']:
            i = event['increment']
            if i is not None:
                self.incrementCache.append(i)
        if self.hold is False:
            print('testDidIncrement event occured', self.incrementCache)
            self.incrementCache = []
        else:
            print('testDidIncrement is holding')


if f'{coalescingTestKey}.testDidIncrement' not in roboFontSubscriberEventRegistry:
    registerSubscriberEvent(
        subscriberEventName=f'{coalescingTestKey}.testDidIncrement',
        methodName='testDidIncrement',
        lowLevelEventNames=[f'{coalescingTestKey}.testDidIncrement'],
        dispatcher='roboFont',
        delay=2,
    )
if f'{coalescingTestKey}.testHold' not in roboFontSubscriberEventRegistry:
    registerSubscriberEvent(
        subscriberEventName=f'{coalescingTestKey}.testHold',
        methodName='testHold',
        lowLevelEventNames=[f'{coalescingTestKey}.testHold'],
        dispatcher='roboFont',
        delay=0.5,
    )


if __name__ == '__main__':
    registerRoboFontSubscriber(coalescingTest)