We have a fast path to return None if we have no rules for the pseudo-element at
all, but we should also return None if we have no _matching_ rules for it for
the given originating element. This is relied on by consumers like
Servo_ResolvePseudoStyle, which needs to be able to detect the "no styles for
this pseudo-element for this originating element case", to support probing for
whether work for a specific pseudo-element should be done at all.
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Source-Repo: https://github.com/servo/servo
Source-Revision: 04aac0247aea29e361589a75954b4f769478dd02
PR for [Gecko bug 1355348](https://bugzilla.mozilla.org/show_bug.cgi?id=1355348)
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This used to make `RUST_LOG=style` basically useless.
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Source-Revision: fd7af58becbcee8facfc07c5f9d028bb9c86c3a0
If there are multiple prefixed/non-prefixed @keyframes with the same name;
* non-prefixed rule overrides earlier rules.
* prefixed rule overrides earlier prefixed rules.
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This is PR of https://bugzilla.mozilla.org/show_bug.cgi?id=1356779
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This is needed for both bug 1357461 and bug 1273303, where I plan to add smarter
invalidations than what we have now.
Also, it's cleaner.
Ideally I'll move this onto stylist, though that may require extra work to make
it work fine for Servo, so for now let's just do the obvious thing.
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This is a PR for https://bugzilla.mozilla.org/show_bug.cgi?id=1324700
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On Gecko, we get tons of console spam from 1-element traversals if we don't do this.
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Source-Revision: b51416846993f108269c0d979649c575e47a91ac
This makes the dependency tracker properly recurse into simple selectors inside the current complex selector to find the appropriate dependencies.
We can't still remove the outer visitor because we need it for stuff like `:not(.foo + bar)`, but I plan to get rid of it in a followup as long as try comes back green.
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Source-Revision: 53c47acfc425ac2dcc5d8aa08d4882c4bb0e7251
Also refactors a lot of the restyle hint code to use these new hooks, and removes a lot of hacks in servo that shouldn't be needed because of correct handling of restyles due to attribute changes.
I just smoketested this, so going for a full try run now.
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Use some fake pseudo elements to style servo-specific boxes in servo. Also, Since for nested inline elements non-inheritable properties are properly stored in the inline context of an inline fragment, so get
rid of them on the style using empty pseudo to do cascading.
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Servo side of https://bugzilla.mozilla.org/show_bug.cgi?id=1352464
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Before this PR, every object reflected in CSSOM is in `Arc<RwLock<_>>` to enable safe (synchronized) mutable aliasing. Acquiring all these locks has significant cost during selector matching:
* https://bugzilla.mozilla.org/show_bug.cgi?id=1311469
* https://bugzilla.mozilla.org/show_bug.cgi?id=1335941
* https://bugzilla.mozilla.org/show_bug.cgi?id=1339703
This PR introduce a mechanism to protect many objects with the same `RwLock` that only needs to be acquired once.
In Stylo, there is one such lock per process (in a `lazy_static`), used for everything.
I non-Stylo Servo, I originally intended to have one such lock per document (for author-origin stylesheets, and one per process for user-agent and user sytlesheets since they’re shared across documents, and never mutated anyway). However I failed to have the same document-specific (or pipeline-specific) `Arc` reachable from both `Document` nodes and `LayoutThread`. Recursively following callers lead me to include this `Arc` in `UnprivilegedPipelineContent`, but that needs to be serializable. So there is a second process-wide lock.
This was previously #15998, closed accidentally.
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This is on top of https://github.com/servo/servo/pull/15928.
Now that cascade() gets a Device ref, we can use the default computed values
from there to avoid propagating that state all over the place.
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This is needed for https://bugzilla.mozilla.org/show_bug.cgi?id=1346481
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Reviewed upstream by @heycam
cc @bholley, didn't end up renaming the `layout_parent` thing, because it made the cascade way more verbose (and difficult to understand IMO) unnecessarily, and you said you were ok-ish with it.
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We should create KeyframeAnimation even if css keyframe rule is empty because we should fire css animation events for such CSS animations.
Also we should ignore properties that are annotated with '!important'. From the spec[1].
using !important on them is invalid and will cause the property to be ignored
[1] https://drafts.csswg.org/css-animations-1/#keyframes
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Fixes Stylist::set_device to check for media queries in stylesheets.
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I have been working on issue number #15244. I have substituted quickersort with pdqsort in the style component. The changes I made affect: Cargo.toml, stylist.rs and lib.rs (all of them are in /components/style).
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Reviewed in the bug.
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When we resolve style for an eagerly computed pseudo-element, such as an anonymous box, if there are no matching rules we currently just clone the parent's style. We should only do that if `inherit_all` is true, otherwise we should inherit only the inherited properties from the parent.
I was going to use `.unwrap_or_default()` on the result of looking up `precomputed_pseudo_element_decls`, but that didn't seem to work since that map lookup returns a reference and not a `Vec` itself.
r? @emilio
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The idea here is having (for convenience) different `Expression` and `Device` representations for Gecko.
Both will be implemented in rust, but will use `nsMediaFeatures` as a source of media features instead of the Servo bits.
Does it sound good?
r? @heycam or @Manishearth
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Source-Revision: fdddeb1c9229b6f9bc202cb2df1a3701eec47e05
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r? @SimonSapin or @mbrubeck
cc @heycam and @bholley
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Otherwise it would be hard for Gecko to hold `CssRules`.
r? @manishearth
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This implements the [CSSOM StyleSheet.disabled](https://drafts.csswg.org/cssom/#dom-stylesheet-disabled) IDL attribute.
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