W3C home > Mailing lists > Public > public-web-perf@w3.org > July 2011

[PageVisibility] Feedback

From: Anne van Kesteren <annevk@opera.com>
Date: Fri, 22 Jul 2011 23:11:39 +0200
To: public-web-perf@w3.org
Message-ID: <op.vy1g5pty64w2qv@annevk-macbookpro.local>
1. The hidden attribute on Document is potentially confusing with the  
hidden attribute existing on all HTML elements, especially as the Document  
object sometimes shares such global HTML attributes (dir and numerous  
event handler attributes). Maybe isVisible would be better?

2. visibilityState should presumably return a DOMString.

3. We use strings in a number of APIs and it is clearly a better approach  
however none of these APIs currently expose them as constants and I do not  
think there is a good reason to do that. Examples of such APIs are  
XMLHttpRequest (the responseType attribute) and the HTML Canvas 2D Context  
(numerous attributes).

4. I think it would be better if the DOM dependency was on  
http://dvcs.w3.org/hg/domcore/raw-file/tip/Overview.html as that is what  
we want implementors to implement.

5. Instead of using [NoInterfaceObject], a different interface name, and  
implements, please simply use "partial interface Document".

6. Thought I had just before sending, should this document say something  
about privacy implications?

Anne van Kesteren
Received on Friday, 22 July 2011 21:12:09 UTC

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