Index: third_party/WebKit/Source/core/dom/custom/CustomElementCreationScope.h |
diff --git a/third_party/WebKit/Source/core/dom/custom/CustomElementCreationScope.h b/third_party/WebKit/Source/core/dom/custom/CustomElementCreationScope.h |
new file mode 100644 |
index 0000000000000000000000000000000000000000..d8f2dbd120ef60530bc7804f55c7054b7d073412 |
--- /dev/null |
+++ b/third_party/WebKit/Source/core/dom/custom/CustomElementCreationScope.h |
@@ -0,0 +1,40 @@ |
+// Copyright 2016 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. |
+ |
+#ifndef CustomElementCreationScope_h |
+#define CustomElementCreationScope_h |
+ |
+#include "core/frame/LocalDOMWindow.h" |
+#include "platform/heap/Handle.h" |
+ |
+namespace blink { |
+ |
+class Document; |
+ |
+class CustomElementCreationScope { |
+ STACK_ALLOCATED(); |
+public: |
+ explicit CustomElementCreationScope(Document* document) |
+ : m_document(document) |
+ { |
+ if (LocalDOMWindow* window = m_document->executingWindow()) { |
+ m_prev = window->customElementCreationContext(); |
+ window->setCustomElementCreationContext(m_document); |
+ } |
+ } |
+ |
+ ~CustomElementCreationScope() |
+ { |
+ if (LocalDOMWindow* window = m_document->executingWindow()) |
+ window->setCustomElementCreationContext(m_prev); |
+ } |
+ |
+private: |
+ Member<Document> m_document; |
+ Member<Document> m_prev = nullptr; |
+}; |
+ |
+} // namespace blink |
+ |
+#endif // CustomElementCreationScope_h |