var enableAt = function(_editor) {
    var editor = _editor;
    if(editor.edit == undefined || editor.edit.iframe == undefined){
        return;
    }

    var id = arguments[1] ? arguments[1] : undefined;
    var type = arguments[2] ? arguments[2] : 'Activity';

    var ifr = editor.edit.iframe[0];
    var doc = ifr.contentDocument || iframe.contentWindow.document;
    var ifrBody = doc.body;
    //ifrBody.contentEditable = false;
    $(ifrBody).attr('enable_at', 'true');
    console.log("enable at");

    //$.fn.atwho.debug = true;


    var names = [];
    if("undefined" !== (typeof atPersonLists)){
        names = atPersonLists;
    }

    if('undefined' != (typeof id)){
        names = '/at/' + id + '.json?type='+type;
    }

    //var names = ["Jacob","Isabella","Ethan","Emma","Michael","Olivia","Alexander","Sophia","William","Ava","Joshua","Emily","Daniel","Madison","Jayden","Abigail","Noah","Chloe","你好","你你你", "가"];
    //
    //var names = $.map(names,function(value,i) {
    //    return {'id':i,'name':value,'email':value+"@email.com"};
    //});

    var at_config = {
        at: "@",
        data: names,
        insertTpl: '<span class="at" data-user-id="${userid}"><a href="/users/${userid}">@${name}(${login})</a></span>',
        displayTpl: "<li>${name} <small>${login}</small></li>",
        searchKey: 'searchKey',
        limit: 200
    };

    console.log(_editor.options);

    var input = $(ifrBody);

    _editor.options.enable_at = (function(){
        var first = true;
        return function(){
            if(first){
                input.atwho(at_config);
                first = false;
            }
        }
    })();

    //$(ifrBody).atwho(at_config);


    //$inputor.caret('pos', 47);
    //$inputor.focus().atwho('run');
};