# Copyright (c) 2009 bivio Software Inc.  All Rights Reserved.
#
# Visit http://www.bivio.biz for more info.
# 
# This library is free software; you can redistribute it and/or modify
# it under the terms of the GNU Lesser General Public License as
# published by the Free Software Foundation; either version 2.1 of the
# License, or (at your option) any later version.
# 
# This library 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
# Lesser General Public License for more details.
# 
# You should have received a copy of the GNU Lesser General Public
# License along with this library;  If not, you may get a copy from:
# http://www.opensource.org/licenses/lgpl-license.html
# 
# $Id: MultiCheckHandler.pm,v 2.2 2010/04/23 21:58:36 moeller Exp $
package Bivio::UI::HTML::Widget::MultiCheckHandler;
use strict;
use Bivio::Base 'UI.Widget';

our($VERSION) = sprintf('%d.%02d', q$Revision: 2.2 $ =~ /\d+/g);
my($_JS) = b_use('HTMLWidget.JavaScript');

sub get_html_field_attributes {
    return ' onclick="mc_checked(this, event)"';
}

sub render {
    my($self, $source, $buffer) = @_;
    $_JS->render($source, $buffer, $self->package_name, <<'EOF');
var mc_last_check = -1;
function mc_checked(c, e) {
  var index = parseInt(c.name.substr(c.name.indexOf('_') + 1));

  if (e.shiftKey && mc_last_check != -1) {

    for (var i = (mc_last_check < index ? mc_last_check : index);
      i <= (mc_last_check > index ? mc_last_check : index); i++) {
      if (i != index)
        c.form[c.name.substr(0, c.name.indexOf('_') + 1) + i].checked = c.checked;
    }
  }
  mc_last_check = index;
  return;
}
EOF
    return;
}

1;