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..f2a11b6694ba14317ebaf1da2c56bd43016c73fe |
--- /dev/null |
+++ b/third_party/WebKit/Source/core/dom/custom/CEReactionsScope.h |
@@ -0,0 +1,61 @@ |
+// 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); |
yosin_UTC9
2016/06/01 06:15:44
nit: Better to use DISALLOW_COPY_AND_ASSIGN(CEReac
|
+public: |
+ static CEReactionsScope* current() |
+ { |
+ return topOfStack(); |
+ } |
+ |
+ CEReactionsScope() |
yosin_UTC9
2016/06/01 06:15:44
Do we really need to them inline?
To reduce compil
dominicc (has gone to gerrit)
2016/06/01 23:30:56
Probably yes; these will get added to every CEReac
|
+ : m_prev(topOfStack()) |
+ { |
+ topOfStack() = this; |
+ } |
+ |
+ ~CEReactionsScope() |
+ { |
+ CEReactionsScope** top = &topOfStack(); |
+ *top = (*top)->m_prev; |
+ if (m_frameHost.get()) |
+ invokeReactions(); |
+ } |
+ |
+ void enqueue(Element*, CustomElementReaction*); |
+ |
+private: |
+ static CEReactionsScope*& topOfStack() |
+ { |
+ static CEReactionsScope* top = nullptr; |
+ return top; |
+ } |
+ |
+ void invokeReactions(); |
+ |
+ CEReactionsScope* m_prev; |
+ Member<FrameHost> m_frameHost; |
+}; |
+ |
+} // namespace blink |
+ |
+#endif // CEReactionsScope_h |