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// 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.h"
#include "third_party/blink/renderer/platform/wtf/std_lib_extras.h"
namespace blink {
class CustomElementReaction;
class Element;
// https://html.spec.whatwg.org/multipage/scripting.html#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_
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