1588431 - Incompatible style attribute behavior in ::part() with Chromium

Status: RESOLVED FIXED

(Core :: CSS Parsing and Computation, defect, P3)

Description

[Emilio Cobos Álvarez (:emilio)]

Attachment: t.html

See the test-case.

We agree with Safari, but I think Chromium is right, technically.

Comment 1

[Jan Miksovsky]

I filed https://github.com/w3c/webcomponents/issues/847 just to make sure everyone's on board with following Chrome's behavior.

Comment 2

[Emilio Cobos Álvarez (:emilio)]

Attachment: Bug 1588431 - Fix cascade order of shadow parts. r=#style

I took a look at this today, but didn't manage to finish.

Comment 3

[Emilio Cobos Álvarez (:emilio)]

Attachment: Bug 1588431 - Split collect_style_attribute_and_animation_rules. r=#style

Animations are their own cascade level per https://drafts.csswg.org/css-cascade-4/#cascade-origin

Comment 4

[Emilio Cobos Álvarez (:emilio)]

Attachment: Bug 1588431 - Optimize storage of ApplicableDeclaration again. r=#style

So that we don't regress perf.

Depends on D49988

Comment 6

[Pulsebot]

Pushed by [e-mail]:
https://hg.mozilla.org/integration/autoland/rev/752fca530835
Split collect_style_attribute_and_animation_rules. r=heycam

Comment 7

[Pulsebot]

Pushed by [e-mail]:
https://hg.mozilla.org/integration/autoland/rev/15ba6d515944
Fix cascade order of shadow parts. r=heycam
https://hg.mozilla.org/integration/autoland/rev/06945900e072
Optimize storage of ApplicableDeclaration again. r=heycam

Comment 8

[Daniel Varga [:dvarga]]

https://hg.mozilla.org/mozilla-central/rev/752fca530835
https://hg.mozilla.org/mozilla-central/rev/15ba6d515944
https://hg.mozilla.org/mozilla-central/rev/06945900e072