[python] multithread example to not freeze/not block AppJar when sleep function is called

non-blockingAppJar.py

#
# Multithread AppJar example

import threading, time
from appJar import gui

def btn_normal(btnName):
    app.addLabel("l1", "Label 1")
    #call sleep Function for Label 2 in main thread
    sleepFunction(3)
    app.addLabel("l2", "Label 3")

def btn_thread(btnName):
    app.addLabel("l1", "Label 1")
    #call sleep Function for Label 2 in seperate thread
    threadObj = threading.Thread(target=sleepFunction, args=[3])
    threadObj.start()
    app.addLabel("l2", "Label 3")

def sleepFunction(_sleepTime):
    time.sleep(_sleepTime)
    app.addLabel("l3", "Label 2 sleep")


# AppJar gui
app = gui("Test Form")
app.addNamedButton("Start with one thread", "btn1", btn_normal)
app.addNamedButton("Start with two threads", "btn2", btn_thread)
app.go()

Two buttons:

• btn1: normal sleep function call in one thread -> AppJar freezes until sleep function ends
• btn2: creating a new thread in which the sleep function is called -> AppJar runs and Label2 added after the sleed funtion has finished