8000 [scroll-animations-1] Replace timeline-attachment with timeline-scope #7759 by fantasai · Pull Request #8906 · w3c/csswg-drafts · GitHub
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[scroll-animations-1] Replace timeline-attachment with timeline-scope #7759 #8906

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Merged
fantasai merged 3 commits into from
Jun 6, 2023
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[scroll-animations-1] Replace timeline-attachment with timeline-scope #7759 #8906

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[scroll-animations-1] Replace timeline-attachment with timeline-scope…
fantasai May 31, 2023
aec6f8e
[scroll-animations-1] names declared with timeline-scope are locally …
fantasai Jun 5, 2023
49614e1
[scroll-animations-1] Clarify that timeline identity is also not cycled.
fantasai Jun 5, 2023
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[scroll-animations-1] names declared with timeline-scope are locally … 
…trapped #7759

See #8906 (comment)
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@fantasai
fantasai committed Jun 5, 2023
commit aec6f8eaebce3e0fd6ac6702c1efbfe8dd974463
19 changes: 10 additions & 9 deletions scroll-animations-1/Overview.bs
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Expand Up @@ -1260,36 +1260,37 @@ spec: cssom-view-1; type: dfn;
Animation type: not animatable
</pre>

This property declares the scope of the specified timeline names,
allowing a named timeline
This property declares the scope of the specified timeline names
to extend across this element’s subtree.
This allows a named timeline
(such as a [=named scroll progress timeline=] or [=named view progress timeline=])
to be referenced by elements outside the timeline-defining element’s subtree--
for example, by siblings, cousins, or ancestors.
It also blocks descendant timelines with the specified names
from being referenced from outside this subtree,
and ancestor timelines with the specified names from being referenced
within this subtree.

Values have the following meanings:

<dl dfn-for="timeline-scope" dfn-type=value>
<dt><dfn>none</dfn>
<dd>
No change in name timeline scope.
No changes in timeline name scope.

<dt><dfn><<custom-ident>></dfn>
<dd>
Declares the name of a matching named timeline defined by a descendant
Declares the name of a matching named timeline defined by a descendant--
whose scope is not already explicitly declared by a descendant using 'timeline-scope'--
to be in scope for this element and its descendants.

If no such timeline exists,
or if more than one such timeline exists,
instead declares an [=inactive timeline=] with the specified name.

Note: This property has no effect if a matching named timeline
is defined by this element itself.
</dl>

Note: This property cannot affect or invalidate any timeline name lookups
within the subtree of a descendant element that declares the same name.
However, it can prevent matching timelines defined on an ancestor
from being referenced by this element or its descendants.
See [[#timeline-scope]].

# Changes # {#changes}
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