554630 - CSS transitions not applied to :visited:hover or :visited:focus

Status: RESOLVED WORKSFORME

(Core :: CSS Parsing and Computation, defect)

Description

[Henri Sivonen (:hsivonen) (away from Bugzilla until 2026-08-31)]

Self-built from 2010-03-23 trunk.

Steps to reproduce:
1) Load http://hsivonen.iki.fi/
2) Follow one of the article links to get a visited link.
3) Navigate back.
4) Make sure you see both visited and unvisited links.
5) Cycle through the links by pressing tab repeatedly.

Actual results:
When focusing an unvisited link, the width of the outline animates. When focusing a visited link, the width of the outline does not animate.

Expected results:
Expected the outline width to animate in both cases as in WebKit.

Comment 1

[David Baron :dbaron: (⌚️UTC-5, no longer working on Mozilla)]

Hmmm.  It works fine in my tree, likely due to bug 147777.  I wonder why it doesn't work without that.

Comment 2

[David Baron :dbaron: (⌚️UTC-5, no longer working on Mozilla)]

So, given your styles, I'd expect visited links not to animate when leaving :focus, since you have the transition properties specified for the following selectors:
  :link:focus
  :visited:focus
  :link
  :link:hover, :visited:hover

(Note the omission of :visited .)


But that doesn't explain a difference when entering :focus.

Comment 3

[David Baron :dbaron: (⌚️UTC-5, no longer working on Mozilla)]

(And, boy, that style sheet has a lot of unnecessary repetition.)

Comment 4

[David Baron :dbaron: (⌚️UTC-5, no longer working on Mozilla)]

I also don't understand why I don't see an animation when leaving :focus.  (Though maybe I'm just not seeing it; the transitions are pretty quick.)

Comment 5

[Boris Zbarsky [:bzbarsky]]

Given the rules on this page, and in particular the fact that :visited has no outline styling of its own, when we go from :visited to :visited:focus, computed outline-width changes from "medium" (an enumerated value) to a length.  So GetCommonUnit returns eUnit_Null, and then AddWeighted returns false, which propagates back into a "don't animate" decision.

Comment 6

[Kuba Niewiarowski]

It's fixed with Stylo, right?

Comment 7

[Henri Sivonen (:hsivonen) (away from Bugzilla until 2026-08-31)]

(In reply to Kuba Niewiarowski from comment #6)
> It's fixed with Stylo, right?

Yes, this has been fixed some time along the way.

(In reply to David Baron :dbaron: 🏴󠁵󠁳󠁣󠁡󠁿 ⌚UTC-8 from comment #4)
> I also don't understand why I don't see an animation when leaving :focus. 
> (Though maybe I'm just not seeing it; the transitions are pretty quick.)

Also I don't see animation on leaving :focus.