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Don't reconstruct the layout object when going from no pseudo to pseudo with no content for ::before and ::after.

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Fixes Gecko bug 1376073.  r=emilio
This commit is contained in:
Boris Zbarsky 2017-07-28 17:41:53 -04:00
parent 12a49dc0be
commit 91d4956da5
5 changed files with 70 additions and 12 deletions
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2
components/style/context.rs
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@ -232,7 +232,7 @@ impl Clone for EagerPseudoCascadeInputs {
impl EagerPseudoCascadeInputs {
/// Construct inputs from previous cascade results, if any.
fn new_from_style(styles: &EagerPseudoStyles) -> Self {
EagerPseudoCascadeInputs(styles.as_array().map(|styles| {
EagerPseudoCascadeInputs(styles.as_optional_array().map(|styles| {
let mut inputs: [Option<CascadeInputs>; EAGER_PSEUDO_COUNT] = Default::default();
for i in 0..EAGER_PSEUDO_COUNT {
inputs[i] = styles[i].as_ref().map(|s| CascadeInputs::new_from_style(s));