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#------------------------------------------------------------------------------
# Copyright (c) 2005, 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>
#------------------------------------------------------------------------------
#-------------------------------------------------------------------------------
#
# Provides a simple function for scheduling some code to run at some time in
# the future (assumes application is wxPython based).
#
# Written by: David C. Morrill
#
# Date: 05/18/2005
#
# (c) Copyright 2005 by Enthought, Inc.
#
#-------------------------------------------------------------------------------
#-------------------------------------------------------------------------------
# Imports:
#-------------------------------------------------------------------------------
import wx
#-------------------------------------------------------------------------------
# Does something 100 milliseconds from now:
#-------------------------------------------------------------------------------
def do_later ( callable, *args, **kw_args ):
""" Does something 50 milliseconds from now.
"""
DoLaterTimer( 50, callable, args, kw_args )
#-------------------------------------------------------------------------------
# Does something after some specified time interval:
#-------------------------------------------------------------------------------
def do_after ( interval, callable, *args, **kw_args ):
""" Does something after some specified time interval.
"""
DoLaterTimer( interval, callable, args, kw_args )
#-------------------------------------------------------------------------------
# 'DoLaterTimer' class:
#-------------------------------------------------------------------------------
class DoLaterTimer ( wx.Timer ):
# List of currently active timers:
active_timers = []
#---------------------------------------------------------------------------
# Initializes the object:
#---------------------------------------------------------------------------
def __init__ ( self, interval, callable, args, kw_args ):
global active_timers
wx.Timer.__init__( self )
for timer in self.active_timers:
if ((timer.callable == callable) and
(timer.args == args) and
(timer.kw_args == kw_args)):
timer.Start( interval, True )
return
self.active_timers.append( self )
self.callable = callable
self.args = args
self.kw_args = kw_args
self.Start( interval, True )
#---------------------------------------------------------------------------
# Handles the timer pop event:
#---------------------------------------------------------------------------
def Notify ( self ):
global active_timers
self.active_timers.remove( self )
self.callable( *self.args, **self.kw_args )
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