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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.
#include "core/dom/custom/CustomElementReactionQueue.h"
#include "core/dom/Element.h"
#include "core/dom/custom/CustomElementReaction.h"
#include "platform/instrumentation/tracing/TraceEvent.h"
namespace blink {
CustomElementReactionQueue::CustomElementReactionQueue() : m_index(0u) {}
CustomElementReactionQueue::~CustomElementReactionQueue() {}
DEFINE_TRACE(CustomElementReactionQueue) {
visitor->trace(m_reactions);
}
void CustomElementReactionQueue::add(CustomElementReaction* reaction) {
m_reactions.push_back(reaction);
}
// There is one queue per element, so this could be invoked
// recursively.
void CustomElementReactionQueue::invokeReactions(Element* element) {
TRACE_EVENT1("blink", "CustomElementReactionQueue::invokeReactions", "name",
element->localName().utf8());
while (m_index < m_reactions.size()) {
CustomElementReaction* reaction = m_reactions[m_index];
m_reactions[m_index++] = nullptr;
reaction->invoke(element);
}
// Unlike V0CustomElementsCallbackQueue, reactions are always
// inserted by steps which bump the global element queue. This
// means we do not need queue "owner" guards.
// https://html.spec.whatwg.org/multipage/scripting.html#custom-element-reactions
clear();
}
void CustomElementReactionQueue::clear() {
m_index = 0;
m_reactions.resize(0);
}
} // namespace blink
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