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#!/usr/bin/env python3
"""
Syncthing-GTK - Timer manager
Simple abstract class for named, cancelable timers
"""
from gi.repository import GLib
class TimerManager(object):
def __init__(self):
self._timers = {}
def timer(self, name, delay, callback, *data, **kwdata):
"""
Runs callback after specified number of seconds. Uses
GLib.timeout_add_seconds with small wrapping to allow named
timers to be canceled by reset() call
"""
method = GLib.timeout_add_seconds
if delay < 1 and delay > 0:
method = GLib.timeout_add
delay = delay * 1000.0
if name is None:
# No wrapping is needed, call GLib directly
method(delay, callback, *data, **kwdata)
else:
if name in self._timers:
# Cancel old timer
GLib.source_remove(self._timers[name])
# Create new one
self._timers[name] = method(
delay, self._callback, name, callback, *data, **kwdata)
def timer_active(self, name):
""" Returns True if named timer is active """
return (name in self._timers)
def cancel_timer(self, name):
"""
Cancels named timer. Returns True on success, False if there is no such timer.
"""
if name in self._timers:
GLib.source_remove(self._timers[name])
del self._timers[name]
return True
return False
def cancel_all(self):
""" Cancels all active timers """
for x in self._timers:
GLib.source_remove(self._timers[x])
self._timers = {}
def _callback(self, name, callback, *data, **kwdata):
"""
Removes name from list of active timers and calls real callback.
"""
del self._timers[name]
callback(*data, **kwdata)
return False
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