Refactor Observatory

runtime/bin/vmservice/client/lib/src/observatory_elements/json_view.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 json_view_element;
-
-import 'package:polymer/polymer.dart';
-import 'observatory_element.dart';
-
-@CustomTag('json-view')
-class JsonViewElement extends ObservatoryElement {
-  @published var json = null;
-  var _count = 0;
-
-  JsonViewElement.created() : super.created();
-
-  void enteredView() {
-    super.enteredView();
-    _count = 0;
-  }
-
-  void jsonChanged(oldValue) {
-    notifyPropertyChange(#valueType, "a", "b");
-  }
-
-  String get primitiveString {
-    return json.toString();
-  }
-
-  String get valueType {
-    if (json is Map) {
-      return 'Map';
-    } else if (json is List) {
-      return 'List';
-    }
-    return 'Primitive';
-  }
-
-  int get counter {
-    return _count++;
-  }
-
-  List get list {
-    if (json is List) {
-      return json;
-    }
-    return [];
-  }
-
-  List get keys {
-    if (json is Map) {
-      return json.keys.toList();
-    }
-    return [];
-  }
-
-  dynamic value(String key) {
-    return json[key];
-  }
-}