[whatwg] Fullscreen feedback

[Kit Grose]

On 21/08/2010, at 3:21 PM, Adam Barth wrote:

> On Fri, Aug 20, 2010 at 7:25 PM, Robert O'Callahan <robert at ocallahan.org> 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.
> 
> How is going fullscreen different from opening a popup window?
> 
> Adam


It's the same document *in the same state* as it was in when you triggered "fullscreen". You would expect fullscreen on a video or animation not to start that video or animation from the beginning or reload it.

—Kit