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style: Stop the cascade when only reset structs change.

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Bug: 1395227
Reviewed-by: heycam
MozReview-Commit-ID: JCZJl2fmtJ9
Signed-off-by: Emilio Cobos Álvarez <emilio@crisal.io>
This commit is contained in:
Emilio Cobos Álvarez 2017-09-04 14:50:13 +02:00
parent f5e23a3a90
commit 825f623b3c
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GPG key ID: 056B727BB9C1027C
6 changed files with 101 additions and 69 deletions
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5
components/style/properties/computed_value_flags.rs
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@ -11,7 +11,7 @@ bitflags! {
/// anonymous boxes, see StyleBuilder::for_inheritance and its callsites.
/// If we ever want to add some flags that shouldn't inherit for them,
/// we might want to add a function to handle this.
pub flags ComputedValueFlags: u8 {
pub flags ComputedValueFlags: u16 {
/// Whether the style or any of the ancestors has a text-decoration-line
/// property that should get propagated to descendants.
///
@ -56,5 +56,8 @@ bitflags! {
///
/// Important because of the same reason.
const INHERITS_CONTENT = 1 << 7,
/// Whether the child explicitly inherits any reset property.
const INHERITS_RESET_STYLE = 1 << 8,
}
}

4
components/style/properties/properties.mako.rs
View file

@ -2661,6 +2661,10 @@ impl<'a> StyleBuilder<'a> {
self.inherited_style_ignoring_first_line.get_${property.style_struct.name_lower}();
% endif
% if not property.style_struct.inherited:
self.flags.insert(::properties::computed_value_flags::INHERITS_RESET_STYLE);
% endif
% if property.ident == "content":
self.flags.insert(::properties::computed_value_flags::INHERITS_CONTENT);
% endif