style: Don't skip computation of pseudo-elements of display: none elements
We have optimizations to avoid doing selector-matching when the style attribute
changes, so, given you can toggle the display property and the pseudo-elements
will suddenly become effective, we can't really skip them.
Furthermore, we assume that if an element has an ElementStyles, they're
up-to-date and we can use them for getComputedStyle, so it's pretty easy to
prove that we do the wrong thing when calling getComputedStyle with a
pseudo-element on a display: none root.
Bug: 1384065
Reviewed-by: heycam
MozReview-Commit-ID: BIOqevGZyrm
We have optimizations to avoid doing selector-matching when the style attribute
changes, so, given you can toggle the display property and the pseudo-elements
will suddenly become effective, we can't really skip them.
Furthermore, we assume that if an element has an ElementStyles, they're
up-to-date and we can use them for getComputedStyle, so it's pretty easy to
prove that we do the wrong thing when calling getComputedStyle with a
pseudo-element on a display: none root.
Bug: 1384065
Reviewed-by: heycam
MozReview-Commit-ID: BIOqevGZyrm
make font-variant-alternates animatable
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selectors: Fix note_next_sequence.
Selector-matching can backtrack when looking for ancestor combinators, so we
can't just arrive there once and forget.
Also, there was a further problem before this patch, which was that
note_next_sequence was called _before_ checking whether all simple selectors
matched, so the sequence you could get there is just wrong.
Bug: 1384020
Reviewed-by: canaltinova
MozReview-Commit-ID: 6g0ibb8EfBU
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Selector-matching can backtrack when looking for ancestor combinators, so we
can't just arrive there once and forget.
Also, there was a further problem before this patch, which was that
note_next_sequence was called _before_ checking whether all simple selectors
matched, so the sequence you could get there is just wrong.
Bug: 1384020
Reviewed-by: canaltinova
MozReview-Commit-ID: 6g0ibb8EfBU
Correct bug references in css-paint-api WPT metadata.
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Some of the bug references in the css-paint-api .ini files were wrong.
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- [X] `./mach test-tidy` does not report any errors
- [X] These changes do not require tests because we don't test .ini files
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Only allow animation-timing-function in @keyframes
CSS animations used to erroneously indicate that 'animation-play-state' is permitted in @keyframes. It is not and it'ss non-sensical to allow it there. This mistake was faithfully transferred into Servo code (although we also make 'animation-timing-function' which is what the spec text meant to say).
The spec has [been updated](adeb3434c5) and so we should update the Servo code accordingly.
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use DisplayListBuilder::with_capacity
DO NOT MERGE until https://github.com/servo/webrender/pull/1399 has landed in Servo.
Previously webrender was reserving 1MB of space for each display list (empirically pages weighed between 100k and 10MB when I implemented this). This was problematic for gecko because they used webrender differently. This just brings Servo back to where it was.
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style: Avoid looking at descendant hints to check whether the element needs a restyle.
This makes us hit some assertions in Gecko.
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Make network error messages more specific
Instead of having a bogus "Network error" string, we extract the NetworkError struct from the Response and send it back to FetchResponseListener.
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It makes just no sense, and I'd rather not complicate the logic in the traversal
implementations, seems easy to just handle it here.
MozReview-Commit-ID: 3PnT2Jyta8g
