I"ï	(function() {
  var init_sortable, recompute_positions;

  $(function() {
    $(document).on('click', 'a.button.has_many_remove', function(e) {
      var parent, to_remove;
      e.preventDefault();
      parent = $(this).closest('.has_many_container');
      to_remove = $(this).closest('fieldset');
      recompute_positions(parent);
      parent.trigger('has_many_remove:before', [to_remove, parent]);
      to_remove.remove();
      return parent.trigger('has_many_remove:after', [to_remove, parent]);
    });
    $(document).on('click', 'a.button.has_many_add', function(e) {
      var before_add, fieldset, html, index, parent, regex;
      e.preventDefault();
      parent = $(this).closest('.has_many_container');
      parent.trigger(before_add = $.Event('has_many_add:before'), [parent]);
      if (!before_add.isDefaultPrevented()) {
        index = parent.data('has_many_index') || parent.children('fieldset').length - 1;
        parent.data({
          has_many_index: ++index
        });
        regex = new RegExp($(this).data('placeholder'), 'g');
        html = $(this).data('html').replace(regex, index);
        fieldset = $(html).insertBefore(this);
        recompute_positions(parent);
        return parent.trigger('has_many_add:after', [fieldset, parent]);
      }
    });
    $(document).on('change', '.has_many_container[data-sortable] :input[name$="[_destroy]"]', function() {
      return recompute_positions($(this).closest('.has_many'));
    });
    init_sortable();
    return $(document).on('has_many_add:after', '.has_many_container', init_sortable);
  });

  init_sortable = function() {
    var elems;
    elems = $('.has_many_container[data-sortable]:not(.ui-sortable)');
    elems.sortable({
      items: '> fieldset',
      handle: '> ol > .handle',
      stop: recompute_positions
    });
    return elems.each(recompute_positions);
  };

  recompute_positions = function(parent) {
    var input_name, position;
    parent = parent instanceof jQuery ? parent : $(this);
    input_name = parent.data('sortable');
    position = parseInt(parent.data('sortable-start') || 0, 10);
    return parent.children('fieldset').each(function() {
      var destroy_input, sortable_input;
      destroy_input = $(this).find("> ol > .input > :input[name$='[_destroy]']");
      sortable_input = $(this).find("> ol > .input > :input[name$='[" + input_name + "]']");
      if (sortable_input.length) {
        return sortable_input.val(destroy_input.is(':checked') ? '' : position++);
      }
    });
  };

}).call(this);
:ET