(function ($) {

/**

 * Handle the concept of a fixed number of slots.

 *

 * This behavior is dependent on the tableDrag behavior, since it uses the

 * objects initialized in that behavior to update the row.

 */

Drupal.behaviors.shortcutDrag = {

  attach: function (context, settings) {

    if (Drupal.tableDrag) {

      var table = $('table#shortcuts'),

        visibleLength = 0,

        slots = 0,

        tableDrag = Drupal.tableDrag.shortcuts;

      $('> tbody > tr, > tr', table)

        .filter(':visible')

          .filter(':odd').filter('.odd')

            .removeClass('odd').addClass('even')

          .end().end()

          .filter(':even').filter('.even')

            .removeClass('even').addClass('odd')

          .end().end()

        .end()

        .filter('.shortcut-slot-empty').each(function(index) {

          if ($(this).is(':visible')) {

            visibleLength++;

          }

          slots++;

        });

      // Add a handler for when a row is swapped.

      tableDrag.row.prototype.onSwap = function (swappedRow) {

        var disabledIndex = $(table).find('tr').index($(table).find('tr.shortcut-status-disabled')) - slots - 2,

          count = 0;

        $(table).find('tr.shortcut-status-enabled').nextAll(':not(.shortcut-slot-empty)').each(function(index) {

          if (index < disabledIndex) {

            count++;

          }

        });

        var total = slots - count;

        if (total == -1) {

          var disabled = $(table).find('tr.shortcut-status-disabled');

          // To maintain the shortcut links limit, we need to move the last

          // element from the enabled section to the disabled section.

          var changedRow = disabled.prevAll(':not(.shortcut-slot-empty)').not($(this.element)).get(0);

          disabled.after(changedRow);

          if ($(changedRow).hasClass('draggable')) {

            // The dropped element will automatically be marked as changed by

            // the tableDrag system. However, the row that swapped with it

            // has moved to the "disabled" section, so we need to force its

            // status to be disabled and mark it also as changed.

            var changedRowObject = new tableDrag.row(changedRow, 'mouse', false, 0, true);

            changedRowObject.markChanged();

            tableDrag.rowStatusChange(changedRowObject);

          }

        }

        else if (total != visibleLength) {

          if (total > visibleLength) {

            // Less slots on screen than needed.

            $('.shortcut-slot-empty:hidden:last').show();

            visibleLength++;

          }

          else {

            // More slots on screen than needed.

            $('.shortcut-slot-empty:visible:last').hide();

            visibleLength--;

          }

        }

      };

      // Add a handler so when a row is dropped, update fields dropped into new regions.

      tableDrag.onDrop = function () {

        tableDrag.rowStatusChange(this.rowObject);

        return true;

      };

      tableDrag.rowStatusChange = function (rowObject) {

        // Use "status-message" row instead of "status" row because

        // "status-{status_name}-message" is less prone to regexp match errors.

        var statusRow = $(rowObject.element).prevAll('tr.shortcut-status').get(0);

        var statusName = statusRow.className.replace(/([^ ]+[ ]+)*shortcut-status-([^ ]+)([ ]+[^ ]+)*/, '$2');

        var statusField = $('select.shortcut-status-select', rowObject.element);

        statusField.val(statusName);

      };

      tableDrag.restripeTable = function () {

        // :even and :odd are reversed because jQuery counts from 0 and

        // we count from 1, so we're out of sync.

        // Match immediate children of the parent element to allow nesting.

        $('> tbody > tr:visible, > tr:visible', this.table)

          .filter(':odd').filter('.odd')

            .removeClass('odd').addClass('even')

          .end().end()

          .filter(':even').filter('.even')

            .removeClass('even').addClass('odd');

      };

    }

  }

};

/**

 * Make it so when you enter text into the "New set" textfield, the

 * corresponding radio button gets selected.

 */

Drupal.behaviors.newSet = {

  attach: function (context, settings) {

    var selectDefault = function() {

      $(this).closest('form').find('.form-item-set .form-type-radio:last input').attr('checked', 'checked');

    };

    $('div.form-item-new input').focus(selectDefault).keyup(selectDefault);

  }

};

})(jQuery);