CSSOM: Make Stylesheet fields have their own synchronization
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r? @upsuper
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We only consider doing a GC currently if the root node has a zero refcount.
But that only happens if it has no children -- even weak children keep a
strong reference to their parent. So at the very least, we should do a
GC specifically when the RuleTree is going away. (We probably want to add
some other GC opportunities too at some point, otherwise it's easy to
never GC a RuleTree.)
Make document url mutable and implement location.replace()
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GC the rule tree only when the free list gets to a certain size.
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Use a heuristic similar to Gecko's to decide when to GC the rule tree.
r? @emilio
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Stylo - gecko glue code for font-size-adjust.
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Implement the gecko-side glue code for font-size-adjust.
This is a followup for #14125, which is originally filed in #13875.
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Prefer Either type for LengthOrNumber
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This adds `impl GeckoStyleCoordConvertible for Either<A, B>` and makes `LengthOrNumber` prefer `Either<A, B>`.
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r? @SimonSapin
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Urlmageddon
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Still needs a bunch of code in net to be converted in order to get more
advantage of this for images and stuff, but meanwhile this should help quite a
bit with #13778.
Still wanted to get this in.
r? @SimonSapin
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Remove usage of 'keyword_list'
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We're using `keyword_list` to generate code for some of the animation properties. This could be achieved with `single_keyword` (passing `vector=True`).
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r? @emilio
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Delegate logical bitfield setters to physical to fix cascade
(fixes#14222)
Five minutes early for "tomorrow", _shrug_.
I'm not entirely sure of this fix. It depends on properties going through the cascade in source order all else being the same. I think that's the case.
Fixes wikipedia though.
r? @emilio or @SimonSapin
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Immutable CSSOM
This PR is intended to add basic support for all CSSOM interfaces, with the ability to index `document.styleSheets` and css rule lists, and serializing individual css rules. Handling individual interface methods for CSSRule subclasses can probably be done with easy/medium bugs.
Mutation safety isn't dealt with here; if the css rule list is mutated the CSSOM will be in an inconsistent state. I intend to deal with this via zero sized tokens, see https://groups.google.com/forum/#!topic/mozilla.dev.servo/AnxJoVmtMXQ . I'll handle that when I start making the CSSOM mutable. (Getting the immutable bit landed first opens this up for easy bugs)
This doesn't really change style aside from adding an extra arc in the CSS rule list as discussed in the linked thread. So far this same design can be used by stylo as well when the time comes.
f? @SimonSapin @emilio
cc @upsuper
part of #11420
Todo:
- [x] Stubs for rest of the CSSRule subclasses
- [x] <s>ToCSS impls for CSSRules.</s> May make into easy bugs and stub out in this PR https://github.com/servo/servo/issues/14195
- [x] Cache CSSStyleSheet on the relevant node
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Added parsing/serialization for text-emphasis-position
Implemented parsing/serialization for text-emphasis-position
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- [ ] These changes fix#13850
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The style system never actually does anything with the document. This allows us
to remove a bunch of stubbing on the Gecko side and streamline some things on
the Servo side in future patches.
