mirror of
https://github.com/LadybirdBrowser/ladybird.git
synced 2025-04-25 22:08:59 +00:00
c9cd795257
MediaQueryList will now remember if a state change occurred when evaluating its match state. This memory can then be used by the document later on when it's updating all queries, to ensure that we don't forget to fire at least one change event. This also required plumbing the system visibility state to initial about:blank documents, since otherwise they would be stuck in "hidden" state indefinitely and never evaluate their media queries.
50 lines
1.5 KiB
C++
50 lines
1.5 KiB
C++
/*
|
|
* Copyright (c) 2021-2022, Linus Groh <linusg@serenityos.org>
|
|
*
|
|
* SPDX-License-Identifier: BSD-2-Clause
|
|
*/
|
|
|
|
#pragma once
|
|
|
|
#include <AK/Forward.h>
|
|
#include <LibWeb/CSS/MediaQuery.h>
|
|
#include <LibWeb/DOM/EventTarget.h>
|
|
|
|
namespace Web::CSS {
|
|
|
|
// 4.2. The MediaQueryList Interface, https://drafts.csswg.org/cssom-view/#the-mediaquerylist-interface
|
|
class MediaQueryList final : public DOM::EventTarget {
|
|
WEB_PLATFORM_OBJECT(MediaQueryList, DOM::EventTarget);
|
|
GC_DECLARE_ALLOCATOR(MediaQueryList);
|
|
|
|
public:
|
|
[[nodiscard]] static GC::Ref<MediaQueryList> create(DOM::Document&, Vector<NonnullRefPtr<MediaQuery>>&&);
|
|
|
|
virtual ~MediaQueryList() override = default;
|
|
|
|
String media() const;
|
|
bool matches() const;
|
|
bool evaluate();
|
|
|
|
void add_listener(GC::Ptr<DOM::IDLEventListener>);
|
|
void remove_listener(GC::Ptr<DOM::IDLEventListener>);
|
|
|
|
void set_onchange(WebIDL::CallbackType*);
|
|
WebIDL::CallbackType* onchange();
|
|
|
|
[[nodiscard]] Optional<bool> const& has_changed_state() const { return m_has_changed_state; }
|
|
void set_has_changed_state(bool has_changed_state) { m_has_changed_state = has_changed_state; }
|
|
|
|
private:
|
|
MediaQueryList(DOM::Document&, Vector<NonnullRefPtr<MediaQuery>>&&);
|
|
|
|
virtual void initialize(JS::Realm&) override;
|
|
virtual void visit_edges(Cell::Visitor&) override;
|
|
|
|
GC::Ref<DOM::Document> m_document;
|
|
Vector<NonnullRefPtr<MediaQuery>> m_media;
|
|
|
|
mutable Optional<bool> m_has_changed_state { false };
|
|
};
|
|
|
|
}
|