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Make a more explicit call to fetch, including options such as destination and mode #359

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Merged
youennf merged 1 commit into from
Apr 30, 2025
Merged

Make a more explicit call to fetch, including options such as destination and mode #359

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25 changes: 14 additions & 11 deletions index.bs
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Original file line number Diff line number Diff line change
Expand Up @@ -273,14 +273,13 @@ platform UI or media keys, thereby improving the user experience.
</li>
<li>
If the user agent wants to display an [=MediaMetadata/artwork image=],
it is RECOMMENDED to run the <a>fetch image algorithm</a>.
the user agent MUST run the <a>fetch image algorithm</a>.
</li>
</ol>

The RECOMMENDED <dfn>fetch image algorithm</dfn> is as follows:
The <dfn>fetch image algorithm</dfn> is as follows:

<ol>
<!-- XXX https://www.w3.org/Bugs/Public/show_bug.cgi?id=24055 -->
<li>
If there are other <a>fetch image algorithms</a> running, cancel
existing algorithm execution instances.
Expand All @@ -294,18 +293,22 @@ platform UI or media keys, thereby improving the user experience.
<dfn>preferred artwork image</dfn> from <var>metadata</var>'s
{{MediaMetadata/artwork}} of the <a>active media session</a>.
</li>
<li>Let <var>request</var> be a new [=request=] whose [=request/URL=] is the
<a>preferred artwork image</a>'s {{MediaImage/src}}, [=request/destination=]
is "image", [=request/mode=] is "no-cors", [=request/credentials mode=] is "include",
and whose [=request/use-URL-credentials flag=] is set.
</li>
<li>
[=Fetch=] the <a>preferred artwork image</a>'s {{MediaImage/src}}.

Then, <a>in parallel</a>:

[=Fetch=] <var>request</var> with the following steps executed
as the fetch's [=processResponse=] algorithm.
<ol>
<li>
Wait for the [=/response=].
<li>
Let <var>response</var> be the [=response=] given to the fetch's
[=processResponse=] algorithm.
</li>
<li>
If the [=/response=]'s [=response/type=] is
{{ResponseType/"default"}}, attempt to decode the resource as an
If <var>response</var>'s [=response/type=] is not
{{ResponseType/"error"}}, attempt to decode <var>response</var>'s [=body=] as an
image.
</li>
<li>
Expand Down