# Copyright (c) Twisted Matrix Laboratories.
# See LICENSE for details.
 
"""Demo of wxPython integration with Twisted."""
 
import sys
 
from wx import Frame, DefaultPosition, Size, Menu, MenuBar, App
from wx import EVT_MENU, EVT_CLOSE
 
from twisted.python import log
from twisted.internet import wxreactor
wxreactor.install()
 
# import t.i.reactor only after installing wxreactor:
from twisted.internet import reactor
 
 
ID_EXIT  = 101
 
class MyFrame(Frame):
    def __init__(self, parent, ID, title):
        Frame.__init__(self, parent, ID, title, DefaultPosition, Size(300, 200))
        menu = Menu()
        menu.Append(ID_EXIT, "E&xit", "Terminate the program")
        menuBar = MenuBar()
        menuBar.Append(menu, "&File")
        self.SetMenuBar(menuBar)
        EVT_MENU(self, ID_EXIT,  self.DoExit)
 
        # make sure reactor.stop() is used to stop event loop:
        EVT_CLOSE(self, lambda evt: reactor.stop())
 
    def DoExit(self, event):
        reactor.stop()
 
 
class MyApp(App):
 
    def twoSecondsPassed(self):
        print "two seconds passed"
 
    def OnInit(self):
        frame = MyFrame(None, -1, "Hello, world")
        frame.Show(True)
        self.SetTopWindow(frame)
        # look, we can use twisted calls!
        reactor.callLater(2, self.twoSecondsPassed)
        return True
 
 
def demo():
    log.startLogging(sys.stdout)
 
    # register the App instance with Twisted:
    app = MyApp(0)
    reactor.registerWxApp(app)
 
    # start the event loop:
    reactor.run()
 
 
if __name__ == '__main__':
    demo()