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# Copyright (c) 2005-18, Enthought, Inc.
# All rights reserved.
#
# This software is provided without warranty under the terms of the BSD
# license included in enthought/LICENSE.txt and may be redistributed only
# under the conditions described in the aforementioned license. The license
# is also available online at http://www.enthought.com/licenses/BSD.txt
# Thanks for using Enthought open source!
#
# Author: Enthought, Inc.
# Description: <Enthought util package component>
from pyface.timer.timer import CallbackTimer, Timer
class DoLaterTimer(Timer):
""" Performs a callback once at a later time.
This is not used by the `do_later` functions and is only provided for
backwards compatibility of the API.
"""
#: The perform the callback once.
repeat = 1
def __init__(self, interval, callable, args, kw_args):
# Adapt the old DoLaterTimer initializer to the Timer initializer.
super(DoLaterTimer, self).__init__(interval, callable, *args, **kw_args)
def do_later(callable, *args, **kwargs):
""" Does something 50 milliseconds from now.
Parameters
----------
callable : callable
The callable to call in 50ms time.
*args, **kwargs :
Arguments to be passed through to the callable.
"""
return CallbackTimer.single_shot(
interval=0.05,
callback=callable,
args=args,
kwargs=kwargs,
)
def do_after(interval, callable, *args, **kwargs):
""" Does something after some specified time interval.
Parameters
----------
interval : float
The time interval in milliseconds to wait before calling.
callable : callable
The callable to call.
*args, **kwargs :
Arguments to be passed through to the callable.
"""
return CallbackTimer.single_shot(
interval=interval / 1000.0,
callback=callable,
args=args,
kwargs=kwargs,
)
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