9b79a686eb
The main motivation behind this is to remove JS specifics of the Realm from the implementation of the Heap. As a side effect of this change, this is a bit nicer to read than the previous approach, and in my opinion, also makes it a little more clear that this method is specific to a JavaScript Realm.
120 lines
3.2 KiB
C++
120 lines
3.2 KiB
C++
/*
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* Copyright (c) 2021-2023, Sam Atkins <atkinssj@serenityos.org>
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* Copyright (c) 2022-2023, Andreas Kling <andreas@ladybird.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/Bindings/Intrinsics.h>
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#include <LibWeb/Bindings/MediaListPrototype.h>
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#include <LibWeb/CSS/MediaList.h>
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#include <LibWeb/CSS/Parser/Parser.h>
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#include <LibWeb/WebIDL/ExceptionOr.h>
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namespace Web::CSS {
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JS_DEFINE_ALLOCATOR(MediaList);
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JS::NonnullGCPtr<MediaList> MediaList::create(JS::Realm& realm, Vector<NonnullRefPtr<MediaQuery>>&& media)
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{
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return realm.create<MediaList>(realm, move(media));
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}
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MediaList::MediaList(JS::Realm& realm, Vector<NonnullRefPtr<MediaQuery>>&& media)
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: Bindings::PlatformObject(realm)
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, m_media(move(media))
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{
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m_legacy_platform_object_flags = LegacyPlatformObjectFlags { .supports_indexed_properties = true };
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}
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void MediaList::initialize(JS::Realm& realm)
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{
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Base::initialize(realm);
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WEB_SET_PROTOTYPE_FOR_INTERFACE(MediaList);
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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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return serialize_a_media_query_list(m_media);
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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(StringView 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(Parser::ParsingContext { realm() }, 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(u32 index) const
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{
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if (index >= m_media.size())
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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(StringView medium)
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{
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// 1. Let m be the result of parsing the given value.
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auto m = parse_media_query(Parser::ParsingContext { realm() }, medium);
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// 2. If m is null, then return.
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if (!m)
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return;
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// 3. If comparing m with any of the media queries in the collection of media queries returns true, then return.
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auto serialized = m->to_string();
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for (auto& existing_medium : m_media) {
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if (existing_medium->to_string() == serialized)
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return;
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}
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// 4. Append m to the collection of media queries.
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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(StringView medium)
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{
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auto m = parse_media_query(Parser::ParsingContext { realm() }, 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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bool MediaList::evaluate(HTML::Window const& window)
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{
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for (auto& media : m_media)
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media->evaluate(window);
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return matches();
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}
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bool MediaList::matches() const
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{
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if (m_media.is_empty())
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return true;
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for (auto& media : m_media) {
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if (media->matches())
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return true;
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}
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return false;
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}
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Optional<JS::Value> MediaList::item_value(size_t index) const
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{
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if (index >= m_media.size())
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return {};
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return JS::PrimitiveString::create(vm(), m_media[index]->to_string());
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}
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}
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