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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 MTools::MObjet;
+
+use vars qw /@ISA/;
+
+BEGIN
+{
+ @ISA = qw /MTools::MObjet/;
+}
+
+use Tk;
+
+sub new {
+ my ($class, @targets) = @_;
+ my $self = {};
+ 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;
+
+