Bug 11952 – style changes made through CSSMediaRule functions insertRule() and deleteRule do not show up on the screen

• Status: RESOLVED
• Resolution: FIXED
• Component: New Bugs

[Sam Weinig]

Changes made using insertRule(rule, index) and deleteRule(index) do not get reflected into the rendering.  I beleive all that's needed is to add the line stylesheet()->styleSheetChanged() to the two functions.

[Sam Weinig]

Created attachment 11991 [details]
patch

Patch with 2 test cases.  The only thing that worries me is the call to stylesheet() could return null.

[Geoffrey Garen]

Comment on attachment 11991 [details]
patch

r=me

styleSheet() is a function that can return NULL, and other spots in WebCore chck for NULL, so I think you should, too. If you know that styleSheet() should never be NULL in this case (and, according to the spec, I don't think it should), then use an ASSERT instead. Eventually, it may be worth clearing up exactly when styleSheet() can return NULL. (I believe it's only in the case of a computed style declaration.)

[Alexey Proskuryakov]

(In reply to comment #2)
> If you know that styleSheet() should
> never be NULL in this case (and, according to the spec, I don't think it
> should), then use an ASSERT instead. 

I believe stylesheet()->styleSheetChanged() would crash as reliably as an assert, so maybe a comment is enough.

[Sam Weinig]

Created attachment 12003 [details]
updated patch

Adds comments noting that stylesheet() can only return 0 for computed style declarations.

[Sam Weinig]

Didn't notice Geoff's r+, landed in r18410 with the new comments.