Incoming references service request and UI.

runtime/bin/vmservice/observatory/lib/src/elements/service_ref.dart

Index: runtime/bin/vmservice/observatory/lib/src/elements/service_ref.dart
diff --git a/runtime/bin/vmservice/observatory/lib/src/elements/service_ref.dart b/runtime/bin/vmservice/observatory/lib/src/elements/service_ref.dart
index 5b6b1a1ed41893ba35820619f57bf1f309274556..bda75071d00c1772632e54a51ef2d1ab90805c84 100644
--- a/runtime/bin/vmservice/observatory/lib/src/elements/service_ref.dart
+++ b/runtime/bin/vmservice/observatory/lib/src/elements/service_ref.dart
@@ -4,6 +4,8 @@
 
 library service_ref_element;
 
+import 'dart:html';
+import 'package:logging/logging.dart';
 import 'package:polymer/polymer.dart';
 import 'observatory_element.dart';
 import 'package:observatory/service.dart';
@@ -54,3 +56,71 @@ class ServiceRefElement extends ObservatoryElement {
     return name.isEmpty;
   }
 }
+
+
+@CustomTag('any-service-ref')
+class AnyServiceRefElement extends ObservatoryElement {
+  @published ServiceObject ref;
+  AnyServiceRefElement.created() : super.created();
+
+  Element _constructElementForRef() {
+    var type = ref.serviceType;
+    switch (type) {
+      case 'Class':
+        ServiceRefElement element = new Element.tag('class-ref');
+        element.ref = ref;
+        return element;
+      case 'Code':
+        ServiceRefElement element = new Element.tag('code-ref');
+        element.ref = ref;
+        return element;
+      case 'Field':
+        ServiceRefElement element = new Element.tag('field-ref');
+        element.ref = ref;
+        return element;
+      case 'Function':
+        ServiceRefElement element = new Element.tag('function-ref');
+        element.ref = ref;
+        return element;
+      case 'Library':
+        ServiceRefElement element = new Element.tag('library-ref');
+        element.ref = ref;
+        return element;
+      case 'Type':
+      case 'Array':
+      case 'Bool':
+      case 'Closure':
+      case 'Double':
+      case 'GrowableObjectArray':
+      case 'Instance':
+      case 'Smi':
+      case 'Mint':
+      case 'Bigint':
+      case 'String':
+        ServiceRefElement element = new Element.tag('instance-ref');
+        element.ref = ref;
+        return element;
+      default:
+        SpanElement element = new Element.tag('span');
+        element.text = "<<Unknown service ref: $ref>>";
+        return element;
+    }
+  }
+
+  refChanged(oldValue) {
+    // Remove the current view.
+    children.clear();
+    if (ref == null) {
+      Logger.root.info('Viewing null object.');
+      return;
+    }
+    var type = ref.serviceType;
+    var element = _constructElementForRef();
+    if (element == null) {
+      Logger.root.info('Unable to find a ref element for \'${type}\'');
+      return;
+    }
+    children.add(element);
+    Logger.root.info('Viewing object of \'${type}\'');
+  }
+}