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###############################################################################
# Copyright 2022 Ian McIntosh <ian@openanswers.org>
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU Library General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
###############################################################################
# UniqueTimeoutCallback will call the provided block ONCE after the given delay.
# If 'set' is called again, it will cancel the previous callback.
class UniqueTimeout
def initialize(time_in_millisecond, &proc)
@time = time_in_millisecond.to_f
@proc = proc
end
def start
stop
@callback_id = GLib::Timeout.add(@time) { ret = @proc.call ; true } # true = don't call again
end
def stop
GLib::Source.remove(@callback_id) if @callback_id
@callback_id = nil
end
end
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