Centralized event streams

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

Index: runtime/observatory/lib/src/elements/nav/menu_item.dart
diff --git a/runtime/observatory/lib/src/elements/nav/menu_item.dart b/runtime/observatory/lib/src/elements/nav/menu_item.dart
index 2411ee57290eef98630a22f07a27884fb7f0521e..03ced3d4edec07687015c21c88318e65784bdd9c 100644
--- a/runtime/observatory/lib/src/elements/nav/menu_item.dart
+++ b/runtime/observatory/lib/src/elements/nav/menu_item.dart
@@ -55,8 +55,10 @@ class NavMenuItemElement extends HtmlElement implements Renderable {
 
   String _label;
   String _link;
+
   String get label => _label;
   String get link => _link;
+  
   set label(String value) => _label = _r.checkAndReact(_label, value);
   set link(String value) => _link = _r.checkAndReact(_link, value);
 
@@ -74,11 +76,15 @@ class NavMenuItemElement extends HtmlElement implements Renderable {
   NavMenuItemElement.created() : super.created() { createShadowRoot(); }
 
   @override
-  void attached() { super.attached(); _r.enable(); }
+  void attached() {
+    super.attached();
+    _r.enable();
+  }
 
   @override
   void detached() {
-    super.detached(); _r.disable(notify: true);
+    super.detached();
+    _r.disable(notify: true);
     shadowRoot.children = [];
   }