Club Drupal

(function($) {

Drupal.behaviors.moduleFilterDynamicPosition = {

  attach: function(context) {

    var $window = $(window);

    $('#module-filter-wrapper', context).once('dynamic-position', function() {

      // Move the submit button just below the tabs.

      $('#module-filter-tabs').append($('#module-filter-submit'));

      var positionSubmit = function() {

        var $tabs = $('#module-filter-tabs');

        var $submit = $('#module-filter-submit', $tabs);

        // Vertical movement.

        var bottom = $tabs.offset().top + $tabs.outerHeight();

        if ($submit.hasClass('fixed-bottom')) {

          bottom += $submit.height();

        }

        if (bottom >= $window.height() + $window.scrollTop()) {

          $submit.addClass('fixed fixed-bottom');

          $tabs.css('padding-bottom', $submit.height());

        }

        else {

          $submit.removeClass('fixed fixed-bottom');

          $tabs.css('padding-bottom', 0);

        }

        // Horizontal movement.

        if ($submit.hasClass('fixed-bottom') || $submit.hasClass('fixed-top')) {

          var left = $tabs.offset().left - $window.scrollLeft();

          if (left != $submit.offset().left - $window.scrollLeft()) {

            $submit.css('left', left);

          }

        }

      };

      // Control the positioning.

      $window.scroll(positionSubmit);

      $window.resize(positionSubmit);

      var moduleFilter = $('input[name="module_filter[name]"]').data('moduleFilter');

      moduleFilter.element.bind('moduleFilter:adjustHeight', positionSubmit);

      moduleFilter.adjustHeight();

    });

  }

};

})(jQuery);