Index: third_party/WebKit/Source/core/dom/custom/CEReactionsScope.h |
diff --git a/third_party/WebKit/Source/core/dom/custom/CEReactionsScope.h b/third_party/WebKit/Source/core/dom/custom/CEReactionsScope.h |
new file mode 100644 |
index 0000000000000000000000000000000000000000..d210c74f35708b9d59a2e82c2b2974d5e6e86634 |
--- /dev/null |
+++ b/third_party/WebKit/Source/core/dom/custom/CEReactionsScope.h |
@@ -0,0 +1,56 @@ |
+// 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 CEReactionsScope_h |
+#define CEReactionsScope_h |
+ |
+#include "core/CoreExport.h" |
+#include "platform/heap/Handle.h" |
+#include "wtf/Allocator.h" |
+#include "wtf/Noncopyable.h" |
+#include "wtf/StdLibExtras.h" |
+ |
+namespace blink { |
+ |
+class CustomElementReaction; |
+class Element; |
+class FrameHost; |
+ |
+// https://html.spec.whatwg.org/multipage/scripting.html#cereactions |
+class CORE_EXPORT CEReactionsScope final { |
+ STACK_ALLOCATED(); |
+ WTF_MAKE_NONCOPYABLE(CEReactionsScope); |
+public: |
+ static CEReactionsScope* current() |
+ { |
+ return s_topOfStack; |
+ } |
+ |
+ CEReactionsScope() |
+ : m_prev(s_topOfStack) |
+ { |
+ s_topOfStack = this; |
+ } |
+ |
+ ~CEReactionsScope() |
+ { |
+ s_topOfStack = s_topOfStack->m_prev; |
+ if (m_frameHost.get()) |
+ invokeReactions(); |
+ } |
+ |
+ void enqueue(Element*, CustomElementReaction*); |
+ |
+private: |
+ static CEReactionsScope* s_topOfStack; |
+ |
+ void invokeReactions(); |
+ |
+ CEReactionsScope* m_prev; |
+ Member<FrameHost> m_frameHost; |
+}; |
+ |
+} // namespace blink |
+ |
+#endif // CEReactionsScope_h |