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f7ff1fd985
This relied on pulling the current realm from the main thread VM, which requires an execution context to be on the VM's stack. This heavily relied on the dummy execution context that is always on the stack, for example, when parsing the UA style sheets where no JavaScript is running.
125 lines
3.8 KiB
C++
125 lines
3.8 KiB
C++
/*
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* Copyright (c) 2021, Sam Atkins <atkinssj@serenityos.org>
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* Copyright (c) 2022-2023, Andreas Kling <kling@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/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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WebIDL::ExceptionOr<JS::NonnullGCPtr<MediaList>> MediaList::create(JS::Realm& realm, Vector<NonnullRefPtr<MediaQuery>>&& media)
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{
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return MUST_OR_THROW_OOM(realm.heap().allocate<MediaList>(realm, 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::LegacyPlatformObject(realm)
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, m_media(move(media))
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{
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}
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JS::ThrowCompletionOr<void> MediaList::initialize(JS::Realm& realm)
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{
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MUST_OR_THROW_OOM(Base::initialize(realm));
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set_prototype(&Bindings::ensure_web_prototype<Bindings::MediaListPrototype>(realm, "MediaList"));
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return {};
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}
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// https://www.w3.org/TR/cssom-1/#dom-medialist-mediatext
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DeprecatedString MediaList::media_text() const
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{
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return serialize_a_media_query_list(m_media).release_value_but_fixme_should_propagate_errors().to_deprecated_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(DeprecatedString 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(Parser::ParsingContext { realm() }, text);
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}
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bool MediaList::is_supported_property_index(u32 index) const
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{
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return index < length();
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}
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// https://www.w3.org/TR/cssom-1/#dom-medialist-item
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DeprecatedString MediaList::item(u32 index) const
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{
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if (!is_supported_property_index(index))
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return {};
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return m_media[index]->to_string().release_value_but_fixme_should_propagate_errors().to_deprecated_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(DeprecatedString 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().release_value_but_fixme_should_propagate_errors();
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for (auto& existing_medium : m_media) {
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if (existing_medium->to_string().release_value_but_fixme_should_propagate_errors() == 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(DeprecatedString 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().release_value_but_fixme_should_propagate_errors() == existing->to_string().release_value_but_fixme_should_propagate_errors();
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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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}
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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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WebIDL::ExceptionOr<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 JS::js_undefined();
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return JS::PrimitiveString::create(vm(), m_media[index]->to_string().release_value_but_fixme_should_propagate_errors().to_deprecated_string());
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}
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}
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