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LibWeb: Start work towards modern CSS "display" values

Until now, we've internally thought of the CSS "display" property as a
single-value property. In practice, "display" is a much more complex
property that comes in a number of configurations.

The most interesting one is the two-part format that describes the
outside and inside behavior of a box. Switching our own internal
representation towards this model will allow for much cleaner
abstractions around layout and the various formatting contexts.

Note that we don't *parse* two-part "display" yet, this is only about
changing the internal representation of the property.

Spec: https://drafts.csswg.org/css-display
This commit is contained in:
Andreas Kling 2021-10-06 17:57:44 +02:00
parent 1552873275
commit 85a0772147
22 changed files with 214 additions and 161 deletions

View file

@ -26,6 +26,7 @@ class CSSRuleList;
class CSSStyleDeclaration;
class CSSStyleRule;
class CSSStyleSheet;
class Display;
class ElementInlineCSSStyleDeclaration;
class Length;
class MediaList;
@ -38,7 +39,6 @@ class Selector;
class StyleProperties;
class StyleComputer;
class StyleSheet;
enum class Display;
class StyleValue;
class BackgroundRepeatStyleValue;