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package MTools::MSwitch;
# 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 MSwitch permet de mat?rialiser et contr?ler des "?tat" actif de l'application.
# Le principe est d'associer des composants (graphiques, abstraits, comportements, objets complexes) ? un ?tat.
# Le composant MSwitch contr?le un ?tat actif de l'application et g?re l'option "-visible" des composants associ?s ? l'?tat.
#
# Les param?tres :
# * $parent : parent de l'objet MSwitch
# * %etats : table de hash d?finissant les ?tats de l'application
# Ex :
# etat1 => [], # ?tat ne comportant aucun composant
# etat2 => 'fichier_svg.svg#tag_svg', # l'?tat va instancier un objet issu d'un fichier svg
# etat3 => ['fichier_svg.svg#tag_svg', $obj], # l'?tat va contenir deux objets: l'un instancier par le MSwitch l'autre d?j? cr?? pr?alablement
# Les propi?t?s :
# * state : contr?le l'?tat actif du MSwitch
# * -visible : permettre de rendre le MSwitch visible ou invisible et en cons?quence de rendre
# "visible ou invisible" les composants de l'?tat actif du switch
# Les fonctions public :
# * setState : $switch -> setState ('etat') ?quivalent ? $swicth -> mconfigure (state => 'etat')
use strict;
use MTools::SVG::SVGLoader;
use vars qw /@ISA/;
BEGIN
{
@ISA = qw /MTools::GUI::MGroup/;
}
sub new {
my ($class, $parent, %etats) = @_;
my $self = new MTools::GUI::MGroup ($parent);
bless $self, $class;
$self -> recordProperty ('state', '');
$self -> recordProperty ('-visible', 1);
$self -> {__last} = '';
$self -> plisten ('state', [$self, '__setState']);
my $first = '';
while ( my ($etat, $val) = each (%etats) )
{
if ($first eq '')
{
$first = $etat;
}
my @tb;
if (ref ($val) eq 'ARRAY')
{
@tb = @{$val};
}
else
{
$tb[0] = $val;
}
for (my $i = 0; $i < @tb; $i ++)
{
if ( !defined $self -> {"__instance_".$tb [$i]})
{
if ( ref ($tb [$i]) eq '')
{
$self -> {"__instance_".$tb [$i]} = MTools::minstance ($tb [$i], $self);
MTools::mconfigure ($self -> {"__instance_".$tb [$i]}, -visible => 0, -sensitive => 0);
}
else
{
$self -> {"__instance_".$tb [$i]} = $tb [$i];
$self -> {"__instance_".$tb [$i]} -> mconfigure ( -visible => 0, -sensitive => 0);
}
}
}
$self -> {"__etat_$etat"} = \@tb;
}
if ($first ne '')
{
$self -> mconfigure ('state' => $first);
}
return $self;
}
sub setState {
my ($self, $etat) = @_;
$self -> mconfigure ('state', $etat);
}
sub __setState {
my ($self, $src, $key, $etat) = @_;
my $curr = $self -> {__last};
$self -> {__last} = $etat;
if(!$self -> mget ('-visible'))
{
return;
}
if ($curr ne '')
{
if (defined $self -> {"__etat_".$curr})
{
my @tb = @{$self -> {"__etat_".$curr}};
for (my $i = 0; $i < @tb; $i ++)
{
if ( ref ($tb [$i]) eq '')
{
MTools::mconfigure ($self -> {"__instance_".$tb [$i]}, -visible => 0, -sensitive => 0);
}
else
{
$self -> {"__instance_".$tb [$i]} -> mconfigure (-visible => 0, -sensitive => 0);
}
}
}
else
{
die "MTools::MSwitch::__setState : you are trying to unset an unknown state \"$curr\"\n";
}
}
if (defined $self -> {"__etat_$etat"})
{
my @tb = @{$self -> {"__etat_$etat"}};
for (my $i = 0; $i < @tb; $i ++)
{
if ( ref ($tb [$i]) eq '')
{
MTools::mconfigure ($self -> {"__instance_".$tb [$i]}, -visible => 1, -sensitive => 1);
}
else
{
$self -> {"__instance_".$tb [$i]} -> mconfigure (-visible => 1, -sensitive => 1);
}
MTools::raise ($self -> {"__instance_".$tb [$i]});
}
}
else
{
if ($etat ne '')
{
die "MTools::MSwitch::__setState : you are trying to set a unknown state \"$etat\"\n";
}
}
}
sub mconfigure {
my ($self, %options) = @_;
if (defined $options {-visible})
{
my $curr = ::mget ($self, 'state');
if ($curr ne '')
{
if (defined $self -> {"__etat_".$curr})
{
my @tb = @{$self -> {"__etat_".$curr}};
my $v = $options {-visible};
for (my $i = 0; $i < @tb; $i ++)
{
if ( ref ($tb [$i]) eq '')
{
MTools::mconfigure ($self -> {"__instance_".$tb [$i]}, -visible => $v, -sensitive => $v);
}
else
{
$self -> {"__instance_".$tb [$i]} -> mconfigure (-visible => $v, -sensitive => $v);
}
if ($v)
{
MTools::raise ($self -> {"__instance_".$tb [$i]});
}
}
}
else
{
die "MTools::MSwitch::mconfigure : you are trying to set a unknown state \"$curr\"\n";
}
}
}
MTools::mconfigure ($self, %options);
}
1;
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