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package MTools::MTimer;
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU LGPL Libray 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 Library 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,
# or refer to http://www.gnu.org/copyleft/lgpl.html
#
##################################################################
# Le composant MTimer encapsule la d?claration et l'utilisation d'un timer.
# Les param?tres :
# * $timeout : repr?sente timeout en ms du timer (totologique ? non...)
# * $repeat : active ou non le caract?re r?p?titif du timer (valeur 0 ou 1)
# * $callback : est optionnel et permet d'appeler une callback au timeout.
# Les ?v?nements :
# * TIME_OUT : ?mis au timeout en plus de l'appel ? une ?ventuelle callback
# * TIMER_STOPPED : ?mis si le timer est interrompu avant un timeout
# Les propi?t?s :
# * timeout : ...
# * repeat : ...
# * callback : ...
# * -visible : d?finie pour assurer la compatibilit? avec les autres objets MTools.
# Si la valeur est 0 le composant est d?sactiv? (appel ? la fonction stop),
# si la valeur est 1 (appel ? la fonction start), le composant est activ?.
# Cette propri?t? permet notamment d'activer un timer dans un ?tat d'un MSwitch.
# Les fonctions public :
# * start permet de d?marrer le timer
# * stop permet de stopper le timer
# Nota : cf. ci-dessus, ces fonctions peuvent ?tre contr?l?es par la propri?t? -visible
use strict;
use MTools;
use MTools::MObjet;
use vars qw /@ISA/;
BEGIN
{
@ISA = qw /MTools::MObjet/;
}
use Tk;
sub new {
my ($class, $timeout, $repeat, $callback, %options) = @_;
my $self = {};
bless $self, $class;
$repeat = 0 if !defined $repeat;
$repeat = 0 if !defined $callback;
$self -> recordEvent ('TIME_OUT');
$self -> recordEvent ('TIMER_STOPPED');
$self -> recordProperty ('timeout', $timeout);
$self -> recordProperty ('repeat', $repeat);
$self -> recordProperty ('callback', $callback);
$self -> recordProperty ('-visible', 0);
$self -> plisten ('-visible', sub {
my ($src, $key, $val) = @_;
if ($val == 0)
{
$self -> stop ();
}
else
{
$self -> start ();
}
});
$self -> mconfigure (%options);
return $self;
}
sub start {
my ($self) = @_;
my $repeat = $self -> mget ('repeat');
my $timeout = $self -> mget ('timeout');
my $callback = $self -> mget ('callback');
my $function = $repeat ? 'repeat' : 'after';
$self -> {__timer} = $zinc -> $function ($timeout, sub {
$self -> notify ('TIME_OUT');
if ($callback)
{
executer ($callback);
}
});
}
sub stop {
my ($self) = @_;
$zinc -> afterCancel ($self -> {__timer});
$self -> notify ('TIMER_STOPPED');
}
1;
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