Centralized event streams

runtime/observatory/lib/src/elements/nav/notify_exception.dart

 // Copyright (c) 2016, 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.
 
 import 'dart:html';
 import 'dart:async';
 import 'package:observatory/src/elements/helpers/rendering_scheduler.dart';
 import 'package:observatory/src/elements/helpers/tag.dart';
 import 'package:observatory/src/elements/helpers/uris.dart';
 import 'package:observatory/models.dart' show ConnectionException;
@@ skipping 13 matching lines @@
 
   Stream<RenderedEvent<NavNotifyExceptionElement>> get onRendered =>
                                                                   _r.onRendered;
 
   final StreamController<ExceptionDeleteEvent> _onDelete =
       new StreamController<ExceptionDeleteEvent>.broadcast();
   Stream<ExceptionDeleteEvent> get onDelete => _onDelete.stream;
 
   Exception _exception;
   StackTrace _stacktrace;
+  
   Exception get exception => _exception;
   StackTrace get stacktrace => _stacktrace;
 
   factory NavNotifyExceptionElement(Exception exception,
       {StackTrace stacktrace: null, RenderingQueue queue}) {
     assert(exception != null);
     NavNotifyExceptionElement e = document.createElement(tag.name);
     e._r = new RenderingScheduler(e, queue: queue);
     e._exception = exception;
     e._stacktrace = stacktrace;
@@ skipping 75 matching lines @@
   }
 
   void _delete(ExceptionDeleteEvent e) {
     _onDelete.add(e);
   }
 
   void delete() {
     _onDelete.add(new ExceptionDeleteEvent(exception, stacktrace: stacktrace));
   }
 }