Implement Custom Elements

sky/engine/core/dom/custom2/new_custom_element_registry.cc

Index: sky/engine/core/dom/custom2/new_custom_element_registry.cc
diff --git a/sky/engine/core/dom/custom2/new_custom_element_registry.cc b/sky/engine/core/dom/custom2/new_custom_element_registry.cc
new file mode 100644
index 0000000000000000000000000000000000000000..171d0203f7f045d95e89db2e313a826b38c3390d
--- /dev/null
+++ b/sky/engine/core/dom/custom2/new_custom_element_registry.cc
@@ -0,0 +1,48 @@
+// Copyright 2015 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "sky/engine/config.h"
+#include "sky/engine/core/dom/custom2/new_custom_element_registry.h"
+
+#include "sky/engine/core/dom/Element.h"
+#include "sky/engine/core/html/HTMLElement.h"
+
+namespace blink {
+
+NewCustomElementRegistry::NewCustomElementRegistry() {
+}
+
+NewCustomElementRegistry::~NewCustomElementRegistry() {
+}
+
+void NewCustomElementRegistry::RegisterElement(const AtomicString& name,
+                                               PassRefPtr<DartValue> type) {
+  if (!dart_state_)
+    dart_state_ = type->dart_state();
+  DCHECK(dart_state_.get() == type->dart_state().get());
+
+  auto result = registrations_.add(name, type);
+  if (!result.isNewEntry) {
+    // TODO(abarth): Handle the case of multiple registrations.
+  }
+}
+
+PassRefPtr<Element> NewCustomElementRegistry::CreateElement(
+    Document& document, const AtomicString& name) {
+  const auto& it = registrations_.find(name);
+  if (it != registrations_.end()) {
+    DartState::Scope scope(dart_state_.get());
+    Dart_Handle type = it->value->dart_value();
+    Dart_Handle wrapper = Dart_New(type, Dart_EmptyString(), 0, nullptr);
+    if (!LogIfError(wrapper)) {
+      RefPtr<Element> element = DartConverter<Element*>::FromDart(wrapper);
+      DCHECK(element);
+      DCHECK(element->isUpgradedCustomElement());
+      return element.release();
+    }
+  }
+  return HTMLElement::create(QualifiedName(name), document);
+}
+
+} // namespace blink