document.fullscreenElement is always true in Opera 12.12

[Yaffle]

Opera 12.12 uses "w3c" api, so this polyfill is not applied, but
it will be good to fix this issue

workaround:

    Object.defineProperty(document, "fullscreenEnabled", {
      get: function () {
        return !!document.fullscreenElement;
      }
    });

[neovov]

Hi,

Thanks for the incoming.
According to the spec (http://www.w3.org/TR/fullscreen/) the “fullscreenEnabled” property reflect the ability for the browser to fullscreen an element (“Returns true if document has the ability to display elements fullscreen, or false otherwise.”).

So, this is a normal workaround for Opera.
I have updated the example page by using fullscreenElement instead of fullscreenEnabled for checking if we are in fullscreen or not. (commit:b4f02fe7cb)

This issue let me fix another issue regarding browsers natively supporting the API (commit:56b762bd0b)

Cheers!