Disable expansion of VirtualTree and VirtualCollection items

runtime/observatory/lib/src/elements/helpers/any_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.
 
 import 'dart:html';
 import 'package:observatory/models.dart' as M;
 import 'package:observatory/src/elements/class_ref.dart';
 import 'package:observatory/src/elements/code_ref.dart';
 import 'package:observatory/src/elements/context_ref.dart';
 import 'package:observatory/src/elements/error_ref.dart';
@@ skipping 11 matching lines @@
 import 'package:observatory/src/elements/script_ref.dart';
 import 'package:observatory/src/elements/sentinel_value.dart';
 import 'package:observatory/src/elements/singletargetcache_ref.dart';
 import 'package:observatory/src/elements/subtypetestcache_ref.dart';
 import 'package:observatory/src/elements/token_stream_ref.dart';
 import 'package:observatory/src/elements/type_arguments_ref.dart';
 import 'package:observatory/src/elements/unknown_ref.dart';
 import 'package:observatory/src/elements/unlinkedcall_ref.dart';
 
 Element anyRef(M.IsolateRef isolate, ref, M.ObjectRepository objects,
-    {RenderingQueue queue}) {
+    {RenderingQueue queue, bool expandable: true}) {
   if (ref is M.Guarded) {
     if (ref.isSentinel) {
-      return anyRef(isolate, ref.asSentinel, objects, queue: queue);
+      return anyRef(isolate, ref.asSentinel, objects,
+          queue: queue, expandable: expandable);
     } else {
-      return anyRef(isolate, ref.asValue, objects, queue: queue);
+      return anyRef(isolate, ref.asValue, objects,
+          queue: queue, expandable: expandable);
     }
   } else if (ref is M.ObjectRef) {
     if (ref is M.ClassRef) {
       return new ClassRefElement(isolate, ref, queue: queue);
     } else if (ref is M.CodeRef) {
       return new CodeRefElement(isolate, ref, queue: queue);
     } else if (ref is M.ContextRef) {
-      return new ContextRefElement(isolate, ref, objects, queue: queue);
+      return new ContextRefElement(isolate, ref, objects,
+          queue: queue, expandable: expandable);
     } else if (ref is M.Error) {
       return new ErrorRefElement(ref, queue: queue);
     } else if (ref is M.FieldRef) {
-      return new FieldRefElement(isolate, ref, objects, queue: queue);
+      return new FieldRefElement(isolate, ref, objects,
+          queue: queue, expandable: expandable);
     } else if (ref is M.FunctionRef) {
       return new FunctionRefElement(isolate, ref, queue: queue);
     } else if (ref is M.ICDataRef) {
       return new ICDataRefElement(isolate, ref, queue: queue);
     } else if (ref is M.InstanceRef) {
-      return new InstanceRefElement(isolate, ref, objects, queue: queue);
+      return new InstanceRefElement(isolate, ref, objects,
+          queue: queue, expandable: expandable);
     } else if (ref is M.LibraryRef) {
       return new LibraryRefElement(isolate, ref, queue: queue);
     } else if (ref is M.LocalVarDescriptorsRef) {
       return new LocalVarDescriptorsRefElement(isolate, ref, queue: queue);
     } else if (ref is M.MegamorphicCacheRef) {
       return new MegamorphicCacheRefElement(isolate, ref, queue: queue);
     } else if (ref is M.ObjectPoolRef) {
       return new ObjectPoolRefElement(isolate, ref, queue: queue);
     } else if (ref is M.PcDescriptorsRef) {
       return new PcDescriptorsRefElement(isolate, ref, queue: queue);
@@ skipping 13 matching lines @@
       return new UnlinkedCallRefElement(isolate, ref, queue: queue);
     } else {
       return new AnchorElement(href: Uris.inspect(isolate, object: ref))
         ..text = 'object';
     }
   } else if (ref is M.Sentinel) {
     return new SentinelValueElement(ref, queue: queue);
   }
   throw new Exception('Unknown ref type (${ref.runtimeType})');
 }