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LibWeb/CSS: Replace style-rule iteration methods with a generic one

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I didn't want to add another set of boilerplatey tree-walking methods,
so here's a general-purpose one. :^)

`for_each_effective_rule()` walks the tree of effective style rules, and
runs the callback on each one, in either pre- or postorder.  The
previous `for_each_effective_style/keyframes_rule()` methods of
`CSSStyleSheet` are then reimplemented in terms of
`for_each_effective_rule()`, and we can get rid of their equivalents
elsewhere.
This commit is contained in:
Sam Atkins
2024-09-03 11:43:20 +01:00
committed by Andreas Kling
parent 4c98906e2c
commit cbb4be3e5e
9 changed files with 53 additions and 67 deletions
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5
Userland/Libraries/LibWeb/CSS/CSSGroupingRule.h
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@@ -1,5 +1,5 @@
/*
* Copyright (c) 2021-2022, Sam Atkins <atkinssj@serenityos.org>
* Copyright (c) 2021-2024, Sam Atkins <sam@ladybird.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
@@ -26,8 +26,7 @@ public:
WebIDL::ExceptionOr<u32> insert_rule(StringView rule, u32 index = 0);
WebIDL::ExceptionOr<void> delete_rule(u32 index);
virtual void for_each_effective_style_rule(Function<void(CSSStyleRule const&)> const& callback) const;
virtual void for_each_effective_keyframes_at_rule(Function<void(CSSKeyframesRule const&)> const& callback) const;
virtual void for_each_effective_rule(TraversalOrder, Function<void(CSSRule const&)> const& callback) const;
virtual void set_parent_style_sheet(CSSStyleSheet*) override;