| // 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 THIRD_PARTY_BLINK_RENDERER_CORE_HTML_CUSTOM_CE_REACTIONS_SCOPE_H_ |
| #define THIRD_PARTY_BLINK_RENDERER_CORE_HTML_CUSTOM_CE_REACTIONS_SCOPE_H_ |
| |
| #include "base/macros.h" |
| #include "third_party/blink/renderer/core/core_export.h" |
| #include "third_party/blink/renderer/platform/heap/handle.h" |
| #include "third_party/blink/renderer/platform/wtf/allocator/allocator.h" |
| #include "third_party/blink/renderer/platform/wtf/std_lib_extras.h" |
| |
| namespace blink { |
| |
| class CustomElementReaction; |
| class Element; |
| |
| // https://html.spec.whatwg.org/C/#cereactions |
| class CORE_EXPORT CEReactionsScope final { |
| STACK_ALLOCATED(); |
| |
| public: |
| static CEReactionsScope* Current() { return top_of_stack_; } |
| |
| CEReactionsScope() : prev_(top_of_stack_), work_to_do_(false) { |
| top_of_stack_ = this; |
| } |
| |
| ~CEReactionsScope() { |
| if (work_to_do_) |
| InvokeReactions(); |
| top_of_stack_ = top_of_stack_->prev_; |
| } |
| |
| void EnqueueToCurrentQueue(Element&, CustomElementReaction&); |
| |
| private: |
| static CEReactionsScope* top_of_stack_; |
| |
| void InvokeReactions(); |
| |
| CEReactionsScope* prev_; |
| bool work_to_do_; |
| |
| DISALLOW_COPY_AND_ASSIGN(CEReactionsScope); |
| }; |
| |
| } // namespace blink |
| |
| #endif // THIRD_PARTY_BLINK_RENDERER_CORE_HTML_CUSTOM_CE_REACTIONS_SCOPE_H_ |