Refactor Observatory

runtime/bin/vmservice/client/lib/src/observatory_elements/instance_ref.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 instance_ref_element;
-
-import 'package:logging/logging.dart';
-import 'package:polymer/polymer.dart';
-import 'service_ref.dart';
-
-@CustomTag('instance-ref')
-class InstanceRefElement extends ServiceRefElement {
-  InstanceRefElement.created() : super.created();
-
-  String get name {
-    if (ref == null) {
-      return super.name;
-    }
-    return ref['preview'];
-  }
-
-  // TODO(turnidge): This is here to workaround vm/dart2js differences.
-  dynamic expander() {
-    return expandEvent;
-  }
-
-  void expandEvent(bool expand, var done) {
-    print("Calling expandEvent");
-    if (expand) {
-      app.requestManager.requestMap(url).then((map) {
-          print("Result is : $map");
-          ref['fields'] = map['fields'];
-          ref['elements'] = map['elements'];
-          ref['length'] = map['length'];
-          print("ref is $ref");
-      }).catchError((e, trace) {
-          Logger.root.severe('Error while expanding instance-ref: $e\n$trace');
-      }).whenComplete(done);
-    } else {
-      ref['fields'] = null;
-      ref['elements'] = null;
-      done();
-    }
-  }
-}