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LibWeb: Add MediaList
This is a list of MediaQuery objects. Not to be confused with `MediaQueryList`, which is concerned with firing events when a media query's match-state changes.
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4 changed files with 116 additions and 0 deletions
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@ -25,6 +25,7 @@ set(SOURCES
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CSS/ResolvedCSSStyleDeclaration.cpp
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CSS/DefaultStyleSheetSource.cpp
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CSS/Length.cpp
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CSS/MediaList.cpp
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CSS/MediaQuery.cpp
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CSS/MediaQueryList.cpp
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CSS/Parser/Parser.cpp
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70
Userland/Libraries/LibWeb/CSS/MediaList.cpp
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70
Userland/Libraries/LibWeb/CSS/MediaList.cpp
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/*
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* Copyright (c) 2021, Sam Atkins <atkinssj@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 <LibWeb/CSS/MediaList.h>
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#include <LibWeb/CSS/Parser/Parser.h>
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namespace Web::CSS {
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MediaList::MediaList(NonnullRefPtrVector<MediaQuery>&& media)
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: m_media(move(media))
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{
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}
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MediaList::~MediaList()
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{
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}
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// https://www.w3.org/TR/cssom-1/#dom-medialist-mediatext
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String MediaList::media_text() const
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{
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StringBuilder builder;
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builder.join(", ", m_media);
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return builder.to_string();
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}
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// https://www.w3.org/TR/cssom-1/#dom-medialist-mediatext
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void MediaList::set_media_text(String const& text)
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{
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m_media.clear();
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if (text.is_empty())
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return;
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m_media = parse_media_query_list({}, text);
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}
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// https://www.w3.org/TR/cssom-1/#dom-medialist-item
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Optional<String> MediaList::item(size_t index) const
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{
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if (index >= length())
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return {};
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return m_media[index].to_string();
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}
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// https://www.w3.org/TR/cssom-1/#dom-medialist-appendmedium
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void MediaList::append_medium(String medium)
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{
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auto m = parse_media_query({}, medium);
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if (!m)
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return;
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if (m_media.contains_slow(*m))
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return;
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m_media.append(m.release_nonnull());
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}
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// https://www.w3.org/TR/cssom-1/#dom-medialist-deletemedium
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void MediaList::delete_medium(String medium)
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{
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auto m = parse_media_query({}, medium);
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if (!m)
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return;
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m_media.remove_all_matching([&](auto& existing) -> bool {
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return m->to_string() == existing->to_string();
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});
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// FIXME: If nothing was removed, then throw a NotFoundError exception.
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}
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}
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38
Userland/Libraries/LibWeb/CSS/MediaList.h
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38
Userland/Libraries/LibWeb/CSS/MediaList.h
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/*
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* Copyright (c) 2021, Sam Atkins <atkinssj@serenityos.org>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#pragma once
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#include <AK/NonnullRefPtrVector.h>
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#include <AK/Optional.h>
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#include <AK/RefCounted.h>
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#include <LibWeb/CSS/MediaQuery.h>
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namespace Web::CSS {
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// https://www.w3.org/TR/cssom-1/#the-medialist-interface
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class MediaList final : public RefCounted<MediaList> {
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public:
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static NonnullRefPtr<MediaList> create(NonnullRefPtrVector<MediaQuery>&& media)
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{
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return adopt_ref(*new MediaList(move(media)));
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}
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~MediaList();
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String media_text() const;
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void set_media_text(String const&);
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size_t length() const { return m_media.size(); }
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Optional<String> item(size_t index) const;
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void append_medium(String);
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void delete_medium(String);
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private:
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explicit MediaList(NonnullRefPtrVector<MediaQuery>&&);
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NonnullRefPtrVector<MediaQuery> m_media;
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};
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}
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7
Userland/Libraries/LibWeb/CSS/MediaList.idl
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7
Userland/Libraries/LibWeb/CSS/MediaList.idl
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interface MediaList {
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stringifier attribute [LegacyNullToEmptyString] CSSOMString mediaText;
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readonly attribute unsigned long length;
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getter CSSOMString? item(unsigned long index);
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undefined appendMedium(CSSOMString medium);
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undefined deleteMedium(CSSOMString medium);
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};
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