AngularJs Sortable directive

Sortable.js

/*jshint bitwise:true, camelcase:true, curly:true, eqeqeq:true, forin:true, latedef:true, newcap:true, noarg:true,
 noempty:true, nonew:true, undef:true, unused:true, strict:true, browser:true, camelcase:false */

/*globals
 $: false
 */

/*exported
 SortableDirective
 */

//Assumed table with table rows and sortable attached to the tbody
var SortableDirective = function () {
    "use strict";

    return {
        link: function (scope, elm) {

            var changedEl = {};

            $(elm).sortable({

                activate: function (ev, elm) {
                    changedEl.startRow = elm.item[0].rowIndex;
                },

                stop: function (ev, elm) {
                    changedEl.endRow = elm.item[0].rowIndex;
                    if (changedEl.startRow !== changedEl.endRow) {  // if rowIndex is undefined nothing will be triggered
                        scope.$emit('changedPosition', changedEl);
                    }
                }
            });
            // a hack to overcome jquery sortable disabling of on doulbe click event
            $(elm).dblclick(function (ev) {
                var el = $(ev.target);

                if (el.is('span')) {

                    var value = $(ev.target).text() || $(ev.target).val(),
                        input = $('<input value="' + value + '" readonly="true" />');

                    $(ev.target).replaceWith(input);
                    input.select();
                }
            });
        }
    };
};