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LibWeb/CSS: Add CSSOM types for @layer rules

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Depending on usage, `@layer` has two forms, with two different CSSOM
types. One simply lists layer names and the other defines a layer with
its contained rules.
This commit is contained in:
Sam Atkins 2024-09-02 16:45:25 +01:00 • committed by Andreas Kling
commit 1c6133aa52
Notes: github-actions[bot] 2024-09-06 05:51:10 +00:00
17 changed files with 346 additions and 27 deletions
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36
Userland/Libraries/LibWeb/CSS/CSSRule.cpp
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@ -1,12 +1,13 @@
/*
* Copyright (c) 2021, the SerenityOS developers.
* Copyright (c) 2022, Sam Atkins <atkinssj@serenityos.org>
* Copyright (c) 2022-2024, Sam Atkins <sam@ladybird.org>
* Copyright (c) 2022, Andreas Kling <kling@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include <LibWeb/Bindings/CSSRulePrototype.h>
#include <LibWeb/CSS/CSSLayerBlockRule.h>
#include <LibWeb/CSS/CSSRule.h>
#include <LibWeb/CSS/CSSStyleSheet.h>
@ -47,4 +48,37 @@ void CSSRule::set_parent_style_sheet(CSSStyleSheet* parent_style_sheet)
m_parent_style_sheet = parent_style_sheet;
}
String CSSRule::parent_layer_internal_qualified_name() const
{
// TODO: Cache this?
Vector<FlyString> layer_names;
for (auto* rule = parent_rule(); rule; rule = rule->parent_rule()) {
switch (rule->type()) {
case CSSRule::Type::Import:
// TODO: Handle `layer(foo)` in import rules once we implement that.
break;
case CSSRule::Type::LayerBlock: {
auto& layer_block = static_cast<CSSLayerBlockRule const&>(*rule);
layer_names.append(layer_block.internal_name());
break;
}
// Ignore everything else
// Note that LayerStatement cannot have child rules so we still ignore it here.
case CSSRule::Type::LayerStatement:
case CSSRule::Type::Style:
case CSSRule::Type::Media:
case CSSRule::Type::FontFace:
case CSSRule::Type::Keyframes:
case CSSRule::Type::Keyframe:
case CSSRule::Type::Namespace:
case CSSRule::Type::Supports:
break;
}
}
return MUST(String::join("."sv, layer_names.in_reverse()));
}
}