/**
 * Create helper for selecting rows in grid
 */
$('.grinder-toolbar').each(function () {
    $(this).prepend(
        $('<span>', {'class':'grinder-toolbar-action grinder-row-checker'}).append(
            $('<button>', {'class':'button'}).append(
                $('<input>', {'type':'checkbox'})
                    .css({'margin':'0px','padding':'0px'})
                    .change(function () {
                        var $grid = $(this).closest('.grid');
                        var $gridBoxes = $grid.find('input.grinder-row-check[type=checkbox]');
                        var $gridCheckers = $grid.find('.grinder-toolbar .grinder-row-checker input[type=checkbox]');

                        if (this.checked == true) {
                            $gridBoxes.attr('checked', true);
                            $gridCheckers.attr('checked', true);
                        } else {
                            $gridBoxes.attr('checked', false);
                            $gridCheckers.attr('checked', false);
                        }
                    })
            )
        )
    );
});