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[css-view-transitions-2] UA may apply implementation-defined timeout o cross-document view transition #9608

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merged 2 commits into from
Nov 17, 2023
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[css-view-transitions-2] UA may apply implementation-defined timeout o cross-document view transition #9608

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[css-view-transitions-2] UA may apply implementation-defined timeout …
noamr Nov 17, 2023
08c722c
Reword timeout
noamr Nov 17, 2023
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12 changes: 9 additions & 3 deletions css-view-transitions-2/Overview.bs
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Expand Up @@ -517,17 +517,23 @@ The {{CSSViewTransitionRule}} represents a ''@view-transition'' rule.
We explicitly clear it here since the old Document may be cached by the UA.

1. [=Queue a global task=] on the [=DOM manipulation task source=] given |newDocument|'s [=relevant global object=],
to perform the following step:
to perform the following steps:

1. Let |newDocument|'s [=active view transition=] be a new {{ViewTransition}} in |newDocument|'s [=relevant Realm=],
1. Let |inboundTransition| be a new {{ViewTransition}} in |newDocument|'s [=relevant Realm=],
whose [=ViewTransition/named elements=] is |outboundTransition|'s [=ViewTransition/named elements=],
[=ViewTransition/initial snapshot containing block size=] is |outboundTransition|'s [=ViewTransition/initial snapshot containing block size=],
and whose [=ViewTransition/is inbound cross-document transition=] is true.

1. [=Call the update callback=] for |newDocument|'s [=active view transition=].
1. Let |newDocument|'s [=active view transition=] be |inboundTransition|.

1. [=Call the update callback=] for |inboundTransition|.

1. Call |onReady|.

1. At any given time, the UA may decide to skip |inboundTransition|, e.g. after an [=implementation-defined=] timeout.
To do so, the UA should [=queue a global task=] on the [=DOM manipulation task source=] given |document|'s [=relevant global object=] to perform the following step:
If |transition|'s [=ViewTransition/phase=] is not "`done`", then [=skip the view transition=] |transition| with a "{{TimeoutError}}" {{DOMException}}.

Note: |outboundTransition| is not exposed to JavaScript, it is used only for capturing
the state of the old document.

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