c718ba5947
Both of these are supposed to be set when the CSSRule is created. The spec is silent on setting it when a CSSRule is added to a parent. So, this is a bit ad-hoc. The parent rule gets set whenever a rule is added to a new parent. The parent stylesheet gets set whenever the rule or one of its ancestors is added to a different stylesheet. There may be some nuance there that I'm missing, but I'm sure we'll find out quickly once we have WPT running!
98 lines
3.3 KiB
C++
98 lines
3.3 KiB
C++
/*
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* Copyright (c) 2019-2021, 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/CSS/CSSStyleSheet.h>
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#include <LibWeb/CSS/Parser/Parser.h>
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#include <LibWeb/CSS/StyleSheetList.h>
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#include <LibWeb/DOM/Document.h>
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#include <LibWeb/DOM/ExceptionOr.h>
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namespace Web::CSS {
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CSSStyleSheet::CSSStyleSheet(NonnullRefPtrVector<CSSRule> rules, Optional<AK::URL> location)
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: m_rules(CSSRuleList::create(move(rules)))
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{
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if (location.has_value())
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set_location(location->to_string());
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for (auto& rule : *m_rules)
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rule.set_parent_style_sheet(this);
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}
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// https://www.w3.org/TR/cssom/#dom-cssstylesheet-insertrule
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DOM::ExceptionOr<unsigned> CSSStyleSheet::insert_rule(StringView rule, unsigned index)
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{
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// FIXME: 1. If the origin-clean flag is unset, throw a SecurityError exception.
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// FIXME: 2. If the disallow modification flag is set, throw a NotAllowedError DOMException.
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// 3. Let parsed rule be the return value of invoking parse a rule with rule.
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auto parsed_rule = parse_css_rule(CSS::Parser::ParsingContext {}, rule);
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// 4. If parsed rule is a syntax error, return parsed rule.
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if (!parsed_rule)
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return DOM::SyntaxError::create("Unable to parse CSS rule.");
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// FIXME: 5. If parsed rule is an @import rule, and the constructed flag is set, throw a SyntaxError DOMException.
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// 6. Return the result of invoking insert a CSS rule rule in the CSS rules at index.
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auto parsed_rule_nonnull = parsed_rule.release_nonnull();
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auto result = m_rules->insert_a_css_rule(parsed_rule_nonnull, index);
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if (!result.is_exception()) {
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// NOTE: The spec doesn't say where to set the parent style sheet, so we'll do it here.
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parsed_rule_nonnull->set_parent_style_sheet(this);
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if (m_style_sheet_list) {
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m_style_sheet_list->document().style_computer().invalidate_rule_cache();
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m_style_sheet_list->document().invalidate_style();
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}
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}
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return result;
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}
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// https://www.w3.org/TR/cssom/#dom-cssstylesheet-deleterule
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DOM::ExceptionOr<void> CSSStyleSheet::delete_rule(unsigned index)
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{
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// FIXME: 1. If the origin-clean flag is unset, throw a SecurityError exception.
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// FIXME: 2. If the disallow modification flag is set, throw a NotAllowedError DOMException.
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// 3. Remove a CSS rule in the CSS rules at index.
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auto result = m_rules->remove_a_css_rule(index);
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if (!result.is_exception()) {
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if (m_style_sheet_list) {
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m_style_sheet_list->document().style_computer().invalidate_rule_cache();
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m_style_sheet_list->document().invalidate_style();
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}
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}
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return result;
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}
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// https://www.w3.org/TR/cssom/#dom-cssstylesheet-removerule
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DOM::ExceptionOr<void> CSSStyleSheet::remove_rule(unsigned index)
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{
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// The removeRule(index) method must run the same steps as deleteRule().
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return delete_rule(index);
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}
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void CSSStyleSheet::for_each_effective_style_rule(Function<void(CSSStyleRule const&)> const& callback) const
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{
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m_rules->for_each_effective_style_rule(callback);
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}
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bool CSSStyleSheet::evaluate_media_queries(HTML::Window const& window)
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{
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return m_rules->evaluate_media_queries(window);
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}
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void CSSStyleSheet::set_style_sheet_list(Badge<StyleSheetList>, StyleSheetList* list)
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{
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m_style_sheet_list = list;
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}
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}
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