Converted Observatory nav-refresh element

runtime/observatory/lib/src/elements/nav_bar.dart

 // Copyright (c) 2013, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 library nav_bar_element;
 
 import 'dart:async';
 import 'dart:html' hide Notification;
 import 'observatory_element.dart';
 import 'package:observatory/service.dart';
@@ skipping 24 matching lines @@
 @CustomTag('nav-menu-item')
 class NavMenuItemElement extends ObservatoryElement {
   @published String link = '#';
   @published String anchor = '---';
 
   NavMenuItemElement.created() : super.created();
 }
 
 typedef Future RefreshCallback();
 
-@CustomTag('nav-refresh')
-class NavRefreshElement extends ObservatoryElement {
-  @published RefreshCallback callback;
-  @published bool active = false;
-  @published String label = 'Refresh';
-
-  NavRefreshElement.created() : super.created();
-
-  void buttonClick(Event e, var detail, Node target) {
-    if (active) {
-      return;
-    }
-    active = true;
-    if (callback != null) {
-      callback()
-        .catchError(app.handleException)
-        .whenComplete(refreshDone);
-    }
-  }
-
-  void refreshDone() {
-    active = false;
-  }
-}
-
 @CustomTag('top-nav-menu')
 class TopNavMenuElement extends ObservatoryElement {
   @published bool last = false;
 
   TopNavMenuElement.created() : super.created();
 }
 
 @CustomTag('vm-nav-menu')
 class VMNavMenuElement extends ObservatoryElement {
   @published bool last = false;
@@ skipping 75 matching lines @@
   @observable get isUnexpectedError {
     return (exception is! NetworkRpcException);
   }
 
   void closeItem(MouseEvent e, var detail, Element target) {
     notifications.remove(notification);
   }
 
   NavNotifyExceptionElement.created() : super.created();
 }