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LibWeb: Add an interface to be notified of Document state changes

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Some HTML elements, e.g. HTMLMediaElement, need to take action when the
document becomes inactive.
This commit is contained in:
Timothy Flynn 2023-05-04 08:48:53 -04:00 • committed by Andreas Kling
parent 88b8969443
commit f78eadf00f
6 changed files with 92 additions and 1 deletions
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31
Userland/Libraries/LibWeb/DOM/DocumentObserver.h Normal file
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/*
* Copyright (c) 2023, Tim Flynn <trflynn89@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#pragma once
#include <LibJS/Forward.h>
#include <LibJS/SafeFunction.h>
#include <LibWeb/Bindings/PlatformObject.h>
#include <LibWeb/Forward.h>
namespace Web::DOM {
class DocumentObserver final : public Bindings::PlatformObject {
WEB_PLATFORM_OBJECT(DocumentObserver, Bindings::PlatformObject);
public:
JS::SafeFunction<void()> document_became_inactive;
private:
explicit DocumentObserver(JS::Realm&, DOM::Document&);
virtual void visit_edges(Cell::Visitor&) override;
virtual void finalize() override;
JS::NonnullGCPtr<DOM::Document> m_document;
};
}