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style: Don't optimize ::before/::after away if content/display have been specified via custom properties.

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We need to treat them the same way as we treat content: inherit.

Differential Revision: https://phabricator.services.mozilla.com/D90222
This commit is contained in:
Emilio Cobos Álvarez 2020-09-21 11:05:51 +00:00
parent 60d89cfbc0
commit 74a46d96eb
4 changed files with 27 additions and 8 deletions
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8
components/style/properties/computed_value_flags.rs
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@ -42,17 +42,17 @@ bitflags! {
/// A flag used to mark styles which are a pseudo-element or under one.
const IS_IN_PSEUDO_ELEMENT_SUBTREE = 1 << 4;
/// Whether this style inherits the `display` property.
/// Whether this style's `display` property depends on our parent style.
///
/// This is important because it may affect our optimizations to avoid
/// computing the style of pseudo-elements, given whether the
/// pseudo-element is generated depends on the `display` value.
const INHERITS_DISPLAY = 1 << 6;
const DISPLAY_DEPENDS_ON_INHERITED_STYLE = 1 << 6;
/// Whether this style inherits the `content` property.
/// Whether this style's `content` depends on our parent style.
///
/// Important because of the same reason.
const INHERITS_CONTENT = 1 << 7;
const CONTENT_DEPENDS_ON_INHERITED_STYLE = 1 << 7;
/// Whether the child explicitly inherits any reset property.
const INHERITS_RESET_STYLE = 1 << 8;