[whatwg] Fullscreen feedback

Ian Hickson ian at hixie.ch
Fri Aug 20 21:45:07 PDT 2010

On Sat, 21 Aug 2010, Robert O'Callahan wrote:
> On Sat, Aug 21, 2010 at 8:24 AM, Ian Hickson <ian at hixie.ch> wrote:
> > 
> > One comment: Rather than adding an "allowfullscreen" attribute on 
> > <iframe>, I would suggest just assuing that sandboxed content (i.e. 
> > content of iframes with the sandbox="" attribute) can't go fullscreen. 
> > I can provide a sandbox flag for this state. If we think there are use 
> > cases for allowing sandboxed iframes to go fullscreen, then I can also 
> > add a keyword that turns off the flag when present (like 
> > "allow-scripts" does for scripts). (I'm assuming there are no cases 
> > for disabling fullscreen for unsandboxed iframes; are there?)
> What about legacy content that doesn't use "sandbox"? It might expect 
> cross-origin IFRAMEs to not be able to take over its window, but if the 
> IFRAME content goes fullscreen, it effectively can.
> I think allowing subframes to go fullscreen should always be opt-in.

You're completely right, sorry. I had this backwards.

Ian Hickson               U+1047E                )\._.,--....,'``.    fL
http://ln.hixie.ch/       U+263A                /,   _.. \   _\  ;`._ ,.
Things that are impossible just take longer.   `._.-(,_..'--(,_..'`-.;.'

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