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LibWeb: Implement CSSRule.parentRule and .parentStyleSheet

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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
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18
Userland/Libraries/LibWeb/CSS/CSSRule.cpp
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@ -1,10 +1,12 @@
/*
* Copyright (c) 2021, the SerenityOS developers.
* Copyright (c) 2022, Sam Atkins <atkinssj@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include <LibWeb/CSS/CSSRule.h>
#include <LibWeb/CSS/CSSStyleSheet.h>
namespace Web::CSS {
@ -21,4 +23,20 @@ void CSSRule::set_css_text(StringView)
// On setting the cssText attribute must do nothing.
}
void CSSRule::set_parent_rule(CSSRule* parent_rule)
{
if (parent_rule)
m_parent_rule = parent_rule->make_weak_ptr();
else
m_parent_rule = nullptr;
}
void CSSRule::set_parent_style_sheet(CSSStyleSheet* parent_style_sheet)
{
if (parent_style_sheet)
m_parent_style_sheet = parent_style_sheet->make_weak_ptr();
else
m_parent_style_sheet = nullptr;
}
}