mirror of
https://github.com/LadybirdBrowser/ladybird.git
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98 lines
3.1 KiB
C++
98 lines
3.1 KiB
C++
/*
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* Copyright (c) 2025, Sam Atkins <sam@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/CSSPageRulePrototype.h>
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#include <LibWeb/Bindings/Intrinsics.h>
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#include <LibWeb/CSS/CSSPageRule.h>
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#include <LibWeb/CSS/DescriptorID.h>
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#include <LibWeb/CSS/Parser/Parser.h>
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#include <LibWeb/CSS/Serialize.h>
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#include <LibWeb/WebIDL/ExceptionOr.h>
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namespace Web::CSS {
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GC_DEFINE_ALLOCATOR(CSSPageRule);
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GC::Ref<CSSPageRule> CSSPageRule::create(JS::Realm& realm, PageSelectorList&& selectors, GC::Ref<CSSPageDescriptors> style, CSSRuleList& rules)
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{
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return realm.create<CSSPageRule>(realm, move(selectors), style, rules);
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}
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CSSPageRule::CSSPageRule(JS::Realm& realm, PageSelectorList&& selectors, GC::Ref<CSSPageDescriptors> style, CSSRuleList& rules)
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: CSSGroupingRule(realm, rules, Type::Page)
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, m_selectors(move(selectors))
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, m_style(style)
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{
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m_style->set_parent_rule(*this);
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}
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void CSSPageRule::initialize(JS::Realm& realm)
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{
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WEB_SET_PROTOTYPE_FOR_INTERFACE(CSSPageRule);
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Base::initialize(realm);
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}
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// https://drafts.csswg.org/cssom/#dom-csspagerule-selectortext
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String CSSPageRule::selector_text() const
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{
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// The selectorText attribute, on getting, must return the result of serializing the associated selector list.
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// https://www.w3.org/TR/cssom/#serialize-a-group-of-selectors
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// To serialize a group of selectors serialize each selector in the group of selectors and then serialize a comma-separated list of these serializations.
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return MUST(String::join(", "sv, m_selectors));
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}
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// https://drafts.csswg.org/cssom/#dom-csspagerule-selectortext
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void CSSPageRule::set_selector_text(StringView text)
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{
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// On setting the selectorText attribute these steps must be run:
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// 1. Run the parse a list of CSS page selectors algorithm on the given value.
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auto page_selector_list = parse_page_selector_list(Parser::ParsingParams {}, text);
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// 2. If the algorithm returns a non-null value replace the associated selector list with the returned value.
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if (page_selector_list.has_value())
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m_selectors = page_selector_list.release_value();
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// 3. Otherwise, if the algorithm returns a null value, do nothing.
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}
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// https://drafts.csswg.org/cssom/#ref-for-csspagerule
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String CSSPageRule::serialized() const
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{
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auto& descriptors = *m_style;
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StringBuilder builder;
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// AD-HOC: There's no spec for this yet, but Chrome puts declarations before margin rules.
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builder.append("@page "sv);
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if (auto selector = selector_text(); !selector.is_empty())
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builder.appendff("{} ", selector);
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builder.append("{ "sv);
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if (descriptors.length() > 0) {
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builder.append(descriptors.serialized());
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builder.append(' ');
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}
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for (size_t i = 0; i < css_rules().length(); i++) {
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auto rule = css_rules().item(i);
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auto result = rule->css_text();
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if (result.is_empty())
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continue;
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builder.appendff("{} ", result);
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}
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builder.append("}"sv);
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return builder.to_string_without_validation();
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}
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void CSSPageRule::visit_edges(Visitor& visitor)
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{
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Base::visit_edges(visitor);
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visitor.visit(m_style);
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}
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}
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