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#!/usr/bin/env python
"""
circuits Signal Handling
A modified version of the circuits Hello World example to demonstrate
how to customize signal handling and cause a delayed system terminate.
"""
from circuits import Component, Debugger, Event, Timer
class hello(Event):
"""hello Event"""
class App(Component):
def hello(self):
"""Hello Event Handler"""
print('Hello World!')
def signal(self, event, signo, stack):
Timer(3, Event.create('terminate')).register(self)
print('Terminating in 3 seconds...')
def terminate(self):
self.stop()
def started(self, component):
"""
Started Event Handler
This is fired internally when your application starts up
and can be used to trigger events that only occur once
during startup.
"""
self.fire(hello()) # Fire hello Event
(App() + Debugger()).run()
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