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package MTools::Comp::MFocuser;
# 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
#
##################################################################
# L'objet MFocuser permet de gerer le focus entre plusieurs objets
#
# Parametres :
# * @targets : objets entre lesquels est gere le focus
# Fonctions :
# * add : permet de prendre en compte un nouvel objet
# * setFocused : force le focus sur un objet
use strict;
use MTools;
use vars qw /@ISA/;
BEGIN
{
@ISA = qw /MTools::MObjet/;
}
use Tk;
sub new {
my ($class, @targets) = @_;
my $self = new MTools::MObjet ();
bless $self, $class;
$self -> recordEvent ('GET_FOCUS');
$self -> recordEvent ('SET_FOCUS');
$self -> {__targets} = \@targets;
for (my $i; $i < @targets; $i++)
{
$targets [$i] -> binding ('GET_FOCUS', ['setFocused', $self]);
}
$self -> binding ('SET_FOCUS', ['setFocused', $self]);
return $self;
}
sub add {
my ($self, $tg) = @_;
push (@{$self -> {__targets}}, $tg);
$tg -> binding ('GET_FOCUS', ['setFocused', $self]);
}
sub setFocused {
my ($self, $tg) = @_;
if (!defined $self -> {__targets}) {return;}
my @tgs = @{$self -> {__targets}};
my $from_children = 0;
for (my $i; $i < @tgs; $i++)
{
if ($tgs [$i] ne $tg)
{
$tgs [$i] -> notify ('SET_FOCUS');
}
else
{
$from_children = 1;
}
}
if ($from_children)
{
$self -> notify ('GET_FOCUS', $self);
}
}
1;
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