Bug 154502 – HTMLScriptElement.crossOrigin / HTMLImageElement.crossOrigin should only return known values

• Component: DOM
• Status: RESOLVED FIXED

[Chris Dumez]

HTMLScriptElement.crossOrigin should only return known values:
- https://html.spec.whatwg.org/multipage/scripting.html#attr-script-crossorigin
- https://html.spec.whatwg.org/multipage/infrastructure.html#cors-settings-attribute

[Chris Dumez]

Created attachment 271865 [details]
Patch

[Chris Dumez]

Created attachment 271875 [details]
Patch

[WebKit Commit Bot]

Attachment 271875 [details] did not pass style-queue:


ERROR: Source/WebCore/bindings/scripts/test/JS/JSTestObj.cpp:1895:  One line control clauses should not use braces.  [whitespace/braces] [4]
Total errors found: 1 in 20 files


If any of these errors are false positives, please file a bug against check-webkit-style.

[Chris Dumez]

Created attachment 271897 [details]
Patch

[WebKit Commit Bot]

Attachment 271897 [details] did not pass style-queue:


ERROR: Source/WebCore/bindings/scripts/test/JS/JSTestObj.cpp:1895:  One line control clauses should not use braces.  [whitespace/braces] [4]
Total errors found: 1 in 19 files


If any of these errors are false positives, please file a bug against check-webkit-style.

[Darin Adler]

Comment on attachment 271897 [details]
Patch

View in context: https://bugs.webkit.org/attachment.cgi?id=271897&action=review

> Source/WebCore/html/HTMLImageElement.cpp:574
> +    if (value.isNull())
> +        removeAttribute(crossoriginAttr);
> +    else

setAttributeWithoutSynchronization already does this. Is there a reason we need to special-case it here too?

> Source/WebCore/html/HTMLScriptElement.cpp:112
> +    if (value.isNull())
> +        removeAttribute(crossoriginAttr);
> +    else

Ditto.

> Source/WebCore/html/parser/HTMLParserIdioms.cpp:303
> +    static NeverDestroyed<const String> anonymous("anonymous", String::ConstructFromLiteral);
> +    static NeverDestroyed<const String> useCredentials("use-credentials", String::ConstructFromLiteral);
> +
> +    if (value.isNull())
> +        return String();
> +    if (equalIgnoringASCIICase(value, useCredentials))
> +        return useCredentials;
> +    return anonymous;

I’m not sure the global strings are a worthwhile optimization. Anders had some information about the tradeoffs in the past.

[Chris Dumez]

Created attachment 271904 [details]
Patch

[Chris Dumez]

Comment on attachment 271904 [details]
Patch

Clearing flags on attachment: 271904

Committed r196894: <http://trac.webkit.org/changeset/196894>

[Chris Dumez]

All reviewed patches have been landed.  Closing bug.