CKEditor: Submenu (drop downlist) not appearing

问题

I need a drop down submenu list within the drop down menu list in plugin. but problem is, that menu shows that It has drop down submenu list but contents of list are not being loaded. empty submenu is shown.

Snap shot:

code :

CKEDITOR.plugins.add( 'microdata',
{
   requires : [ 'styles', 'button' ],
   init : function( editor )
    {
        var  markup= editor.config.languages,
                items = {};
        for ( var i = 0 ; i < markup.length ; i++ )
        {
            var parts = markup[i].split( '=' );
            var name= parts[1].split('org/');
            items[ parts[ 0 ] ] =
                {
                    label : parts[ 0 ],
                    group : 'microdata',
                    icon: this.path + 'icon1.png' ,
                    order : i,
                    getItems: function()
                        {
                            var selection = editor.getSelection();
                            return {
                                name: CKEDITOR.TRISTATE_OFF,
                                friend: CKEDITOR.TRISTATE_OFF
                            };
                        }

        };
             var  name=
                {
                  label: 'name',
                  group: 'microdata',
                  //command: 'nameCmd',
                  order: 5
                }
        editor.addMenuGroup( 'microdata' );
        editor.addMenuItems( items,name);/*,
                friend:
                {
                  label: 'friend',
                  group: 'microdata',
                  //command: 'friendCmd',
                  order: 10
                }
                );*/
        editor.ui.add( 'Microdata', CKEDITOR.UI_MENUBUTTON,
        {
            label: 'Microdata',
            command: 'Microdata',
            modes : { wysiwyg:1 },
            className : 'cke_button_microdata',
            icon: this.path + 'icon1.png' ,
                    onMenu : function()
                {
                    var activeItems = {};

                    for ( var prop in items )
                    {
                        if ( items.hasOwnProperty( prop ) )
                            activeItems[ prop ] = CKEDITOR.TRISTATE_ON;
                    }

                    return  activeItems;
                }
        } );
      }
} );
CKEDITOR.config.languages = [ 'Place=http://schema.org/Place'];

Commands are not added yet.

Any help is greatly appreciated.

来源：https://stackoverflow.com/questions/16197948/ckeditor-submenu-drop-downlist-not-appearing