Centralized event streams

runtime/observatory/lib/src/elements/function_ref_wrapper.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.
 
 import 'dart:html';
 
 import 'package:observatory/app.dart';
 import 'package:observatory/service.dart' show ServiceFunction;
 import 'package:observatory/src/elements/function_ref.dart';
 import 'package:observatory/src/elements/helpers/tag.dart';
 import 'package:observatory/src/elements/shims/binding.dart';
 
 @bindable
 class FunctionRefElementWrapper extends HtmlElement {
 
   static const binder = const Binder<FunctionRefElementWrapper>(const {
       'ref': #ref, 'qualified': #qualified
     });
 
   static const tag = const Tag<FunctionRefElementWrapper>('function-ref');
 
   bool _qualified = true;
   ServiceFunction _function;
+
   bool get qualified => _qualified;
   ServiceFunction get ref => _function;
-  void set qualified(bool qualified) { _qualified = qualified; render(); }
-  void set ref(ServiceFunction ref) { _function = ref; render(); }
+
+  void set qualified(bool value) {
+    _qualified = value;
+    render();
+  }
+  void set ref(ServiceFunction value) {
+    _function = value;
+    render();
+  }
 
   FunctionRefElementWrapper.created() : super.created() {
     binder.registerCallback(this);
     createShadowRoot();
     render();
   }
 
   @override
   void attached() {
     super.attached();
     render();
   }
 
   void render() {
     shadowRoot.children = [];
-    if (ref == null) return;
+    if (ref == null) {
+      return;
+    }
 
     shadowRoot.children = [
       new StyleElement()
         ..text = '''
         class-ref-wrapped > a[href]:hover,
         function-ref-wrapped > a[href]:hover {
             text-decoration: underline;
         }
         class-ref-wrapped > a[href],
         function-ref-wrapped > a[href] {
             color: #0489c3;
             text-decoration: none;
         }''',
       new FunctionRefElement(_function.isolate, _function, qualified: qualified,
         queue: ObservatoryApplication.app.queue)
     ];
   }
 }