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LibWeb: Implement CSSRule.parentRule and .parentStyleSheet

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!
This commit is contained in:
Sam Atkins 2022-04-22 19:56:22 +01:00 committed by Andreas Kling
parent 6e6607a92f
commit c718ba5947
7 changed files with 65 additions and 11 deletions

View file

@ -1,5 +1,5 @@
/*
* Copyright (c) 2021, Sam Atkins <atkinssj@serenityos.org>
* Copyright (c) 2021-2022, Sam Atkins <atkinssj@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
@ -12,18 +12,21 @@ namespace Web::CSS {
CSSGroupingRule::CSSGroupingRule(NonnullRefPtrVector<CSSRule>&& rules)
: m_rules(CSSRuleList::create(move(rules)))
{
for (auto& rule : *m_rules)
rule.set_parent_rule(this);
}
size_t CSSGroupingRule::insert_rule(StringView, size_t)
DOM::ExceptionOr<u32> CSSGroupingRule::insert_rule(StringView rule, u32 index)
{
// https://www.w3.org/TR/cssom-1/#insert-a-css-rule
TODO();
TRY(m_rules->insert_a_css_rule(rule, index));
// NOTE: The spec doesn't say where to set the parent rule, so we'll do it here.
m_rules->item(index)->set_parent_rule(this);
return index;
}
void CSSGroupingRule::delete_rule(size_t)
DOM::ExceptionOr<void> CSSGroupingRule::delete_rule(u32 index)
{
// https://www.w3.org/TR/cssom-1/#remove-a-css-rule
TODO();
return m_rules->remove_a_css_rule(index);
}
void CSSGroupingRule::for_each_effective_style_rule(Function<void(CSSStyleRule const&)> const& callback) const
@ -31,4 +34,11 @@ void CSSGroupingRule::for_each_effective_style_rule(Function<void(CSSStyleRule c
m_rules->for_each_effective_style_rule(callback);
}
void CSSGroupingRule::set_parent_style_sheet(CSSStyleSheet* parent_style_sheet)
{
CSSRule::set_parent_style_sheet(parent_style_sheet);
for (auto& rule : *m_rules)
rule.set_parent_style_sheet(parent_style_sheet);
}
}