ladybird/Userland/Libraries/LibWeb/CSS/MediaQueryList.h
Andreas Kling 8cda70c892 LibWeb: Move event listeners, handlers and callbacks to the GC heap
This patch moves the following things to being GC-allocated:
- Bindings::CallbackType
- HTML::EventHandler
- DOM::IDLEventListener
- DOM::DOMEventListener
- DOM::NodeFilter

Note that we only use PlatformObject for things that might be exposed
to web content. Anything that is only used internally inherits directly
from JS::Cell instead, making them a bit more lightweight.
2022-09-06 00:27:09 +02:00

67 lines
1.7 KiB
C++

/*
* Copyright (c) 2021-2022, Linus Groh <linusg@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#pragma once
#include <AK/Forward.h>
#include <AK/RefCounted.h>
#include <AK/Weakable.h>
#include <LibWeb/Bindings/Wrappable.h>
#include <LibWeb/CSS/MediaQuery.h>
#include <LibWeb/DOM/EventTarget.h>
#include <LibWeb/Forward.h>
namespace Web::CSS {
// 4.2. The MediaQueryList Interface, https://drafts.csswg.org/cssom-view/#the-mediaquerylist-interface
class MediaQueryList final
: public RefCounted<MediaQueryList>
, public Weakable<MediaQueryList>
, public DOM::EventTarget
, public Bindings::Wrappable {
public:
using WrapperType = Bindings::MediaQueryListWrapper;
using RefCounted::ref;
using RefCounted::unref;
static NonnullRefPtr<MediaQueryList> create(DOM::Document& document, NonnullRefPtrVector<MediaQuery>&& media_queries)
{
return adopt_ref(*new MediaQueryList(document, move(media_queries)));
}
virtual ~MediaQueryList() override = default;
String media() const;
bool matches() const;
bool evaluate();
// ^EventTarget
virtual void ref_event_target() override { ref(); }
virtual void unref_event_target() override { unref(); }
virtual JS::Object* create_wrapper(JS::Realm&) override;
void add_listener(DOM::IDLEventListener*);
void remove_listener(DOM::IDLEventListener*);
void set_onchange(Bindings::CallbackType*);
Bindings::CallbackType* onchange();
private:
MediaQueryList(DOM::Document&, NonnullRefPtrVector<MediaQuery>&&);
WeakPtr<DOM::Document> m_document;
NonnullRefPtrVector<MediaQuery> m_media;
};
}
namespace Web::Bindings {
MediaQueryListWrapper* wrap(JS::Realm&, CSS::MediaQueryList&);
}