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LibWeb: Convert white-space CSS property to shorthand

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This exposed a few bugs which caused the following tests to behave
incorrectly:
- `tab-size-text-wrap.html`: This previously relied on a bug where we
  incorrectly treated `white-space: pre` as allowing text wrapping. The
  fix here is to implement the text-wrap CSS shorthand property.

- `execCommand-preserveWhitespace.html`: We don't correctly serialize
  shorthand properties. This is covered by an existing FIXME in
  `CSSStyleProperties::serialized()`

- `white-space-shorthand.html`: The last 5 subtests here fail as we
  don't correctly handle shorthand properties in
  `CSSStyleProperties::remove_property()`. This is covered by an
  existing FIXME in said function.
This commit is contained in:
Callum Law 2025-05-22 00:31:24 +12:00 • committed by Jelle Raaijmakers
commit 94f5a51820
Notes: github-actions[bot] 2025-05-29 10:05:43 +00:00
28 changed files with 568 additions and 308 deletions
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6
Libraries/LibWeb/CSS/ComputedProperties.cpp
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@ -824,12 +824,6 @@ Optional<LengthOrCalculated> ComputedProperties::word_spacing() const
return {};
}
WhiteSpace ComputedProperties::white_space() const
{
auto const& value = property(PropertyID::WhiteSpace);
return keyword_to_white_space(value.to_keyword()).release_value();
}
WhiteSpaceCollapse ComputedProperties::white_space_collapse() const
{
auto const& value = property(PropertyID::WhiteSpaceCollapse);