Code coverage in Observatory

runtime/bin/vmservice/client/lib/src/observatory_elements/navigation_bar_isolate.dart

Index: runtime/bin/vmservice/client/lib/src/observatory_elements/navigation_bar_isolate.dart
diff --git a/runtime/bin/vmservice/client/lib/src/observatory_elements/navigation_bar_isolate.dart b/runtime/bin/vmservice/client/lib/src/observatory_elements/navigation_bar_isolate.dart
new file mode 100644
index 0000000000000000000000000000000000000000..cbe281113c06067dcfd812788bf287e12d08bdee
--- /dev/null
+++ b/runtime/bin/vmservice/client/lib/src/observatory_elements/navigation_bar_isolate.dart
@@ -0,0 +1,48 @@
+// Copyright (c) 2014, 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 navigation_bar_isolate_element;
+
+import 'observatory_element.dart';
+import 'package:polymer/polymer.dart';
+
+@CustomTag('navigation-bar-isolate')
+class NavigationBarIsolateElement extends ObservatoryElement {
+  NavigationBarIsolateElement.created() : super.created();
+  @observable List<String> links = toObservable(
+      [ 'Stacktrace', 'Library', 'CPU Profile']);
+
+  void appChanged(oldValue) {
+    super.appChanged(oldValue);
+    notifyPropertyChange(#currentIsolateName, '', currentIsolateName);
+  }
+
+  String currentIsolateName() {
+    if (app == null) {
+      return '';
+    }
+    print('Fetching name');
+    var isolate = app.locationManager.currentIsolate();
+    if (isolate == null) {
+      return '';
+    }
+    return isolate.name;
+  }
+
+  String currentIsolateLink(String link) {
+    if (app == null) {
+      return '';
+    }
+    switch (link) {
+      case 'Stacktrace':
+        return app.locationManager.currentIsolateRelativeLink('stacktrace');
+      case 'Library':
+        return app.locationManager.currentIsolateRelativeLink('library');
+      case 'CPU Profile':
+        return app.locationManager.currentIsolateRelativeLink('profile');
+      default:
+        return app.locationManager.currentIsolateRelativeLink('');
+    }
+  }
+}