| // 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 CustomElementReactionStack_h |
| #define CustomElementReactionStack_h |
| |
| #include "core/CoreExport.h" |
| #include "platform/heap/Handle.h" |
| #include "wtf/Noncopyable.h" |
| |
| namespace blink { |
| |
| class CustomElementReaction; |
| class CustomElementReactionQueue; |
| class Element; |
| |
| // https://html.spec.whatwg.org/multipage/scripting.html#custom-element-reactions |
| class CORE_EXPORT CustomElementReactionStack final |
| : public GarbageCollected<CustomElementReactionStack> { |
| WTF_MAKE_NONCOPYABLE(CustomElementReactionStack); |
| public: |
| CustomElementReactionStack(); |
| |
| DECLARE_TRACE(); |
| |
| void push(); |
| void popInvokingReactions(); |
| void enqueueToCurrentQueue(Element*, CustomElementReaction*); |
| void enqueueToBackupQueue(Element*, CustomElementReaction*); |
| |
| private: |
| using ElementReactionQueueMap = |
| HeapHashMap<Member<Element>, Member<CustomElementReactionQueue>>; |
| ElementReactionQueueMap m_map; |
| |
| using ElementQueue = HeapVector<Member<Element>, 1>; |
| HeapVector<Member<ElementQueue>> m_stack; |
| Member<ElementQueue> m_backupQueue; |
| |
| void invokeBackupQueue(); |
| void invokeReactions(ElementQueue&); |
| void enqueue(Member<ElementQueue>&, Element*, CustomElementReaction*); |
| }; |
| |
| } // namespace blink |
| |
| #endif // CustomElementReactionStack_h |