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LibWeb: Add an interface to be notified of Document state changes
Some HTML elements, e.g. HTMLMediaElement, need to take action when the document becomes inactive.
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6 changed files with 92 additions and 1 deletions
32
Userland/Libraries/LibWeb/DOM/DocumentObserver.cpp
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32
Userland/Libraries/LibWeb/DOM/DocumentObserver.cpp
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/*
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* Copyright (c) 2023, Tim Flynn <trflynn89@serenityos.org>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include <LibJS/Runtime/Realm.h>
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#include <LibWeb/DOM/Document.h>
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#include <LibWeb/DOM/DocumentObserver.h>
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namespace Web::DOM {
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DocumentObserver::DocumentObserver(JS::Realm& realm, DOM::Document& document)
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: Bindings::PlatformObject(realm)
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, m_document(document)
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{
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m_document->register_document_observer({}, *this);
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}
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void DocumentObserver::visit_edges(Cell::Visitor& visitor)
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{
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Base::visit_edges(visitor);
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visitor.visit(m_document);
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}
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void DocumentObserver::finalize()
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{
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Base::finalize();
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m_document->unregister_document_observer({}, *this);
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}
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}
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