BUILD: 2001-05-09-08 We throw an exception if we try to use item() on the rule list of a stylesheet to get a namespace declaration. Same for media rules.

OK. I have a patch for this. It works fine ... from chrome. When I try to use .item() to get the rules from a CSSRuleList from JS in a webpage, I get: JavaScript error: line 0: uncaught exception: Permission denied to create wrapper for object Looks like xpcdom trouble there.. not really sure how to fix it. Ccing Mitch. Attaching testcase to test on and patch that implements the nsIDOMCSSRule interface for all the various rules.

Hey, a patch, great! Here's a few comments: In ::GetParentStyleSheet() (in all classes), change: + if (nsnull != mSheet) { + return mSheet->QueryInterface(NS_GET_IID(nsIDOMCSSStyleSheet), (void**)aSheet); + } + *aSheet = nsnull; + return NS_OK; to: + if (mSheet) { + return CallQueryInterInterface(mSheet, aSheet); + } + *aSheet = nsnull; + return NS_OK; Other than that the patch looks great! You wanna add classinfo to these classes too? :-)

Adding classinfo would make these classes accessable from web content too, not only from chrome. (look for NS_INTERFACE_MAP_ENTRY_CONTENT_CLASSINFO).

The new patch addresses jst's ::GetParentStyleSheet() comment, adds classinfo to all the classes, and works from web content and chrome both. Reviews?

I still see: if (nsnull != mSheet) { ... in stead of simply: if (mSheet) { ... but I can live with that, change it if you want to :-) sr=jst, great job!

Patch without the compares to nsnull attached. ccing jband for r=

Fix checked in, thanks for all the great work, Boris!

tweaking summary slightly to reflect what was actually implemented. Changing nsIDOMCSSSTyleRule to nsIDOMCSSRule

*** Bug 31059 has been marked as a duplicate of this bug. ***