Converted Observatory code-ref function-ref element

runtime/observatory/lib/src/elements/code_ref_wrapper.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/app.dart';
+import 'package:observatory/service_html.dart' show Code;
+import 'package:observatory/src/elements/code_ref.dart';
+import 'package:observatory/src/elements/helpers/tag.dart';
+import 'package:observatory/src/elements/shims/binding.dart';
+
+@bindable
+class CodeRefElementWrapper extends HtmlElement {
+
+  static const binder = const Binder<CodeRefElementWrapper>(const {
+      'ref': #ref
+    });
+
+  static const tag = const Tag<CodeRefElementWrapper>('code-ref');
+
+  Code _code;
+  Code get ref => _code;
+  void set ref(Code ref) { _code = ref; render(); }
+
+  CodeRefElementWrapper.created() : super.created() {
+    binder.registerCallback(this);
+    createShadowRoot();
+    render();
+  }
+
+  @override
+  void attached() {
+    super.attached();
+    render();
+  }
+
+  void render() {
+    shadowRoot.children = [];
+    if (ref == null) return;
+
+    shadowRoot.children = [
+      new StyleElement()
+        ..text = '''
+        code-ref-wrapped > a[href]:hover {
+            text-decoration: underline;
+        }
+        code-ref-wrapped > a[href] {
+            color: #0489c3;
+            text-decoration: none;
+        }''',
+      new CodeRefElement(_code.isolate, _code,
+          queue: ObservatoryApplication.app.queue)
+    ];
+  }
+}