Support for iframe authentication

[uifox]

Beside popup windows make authentication possible in iframes.

[bsarvari]

Hey @dgrubelic,

At doxo.com we need oauth2 token authentication in a hidden iframe, thus I added iframe support to this library. Although it's not thoroughly tested (I only verified if it's working with our internal custom provider and none of the public ones like google, facebook, etc.), you may want to consider merging this to the master branch. I think this is a useful addition.

One possible caveat—for those using custom providers—is that I renamed the popupOptions variable to authContextOptions which breaks backward compatibility.

[dgrubelic]

Thanks for this huge PR, i'll review it and write down my comments.

[NitradoJustus]

Any chance this is getting merged at some point?

[uifox]

@NitradoJustus

Any chance this is getting merged at some point?

We stopped using vue-authenticate at doxo. Instead we now use the app-auth library because it better fits our use cases, hence I do not manage this PR anymore. If you need these changes, please feel free to fork my fork, resolve the conflicting files and coordinate with @dgrubelic to get them merged to the master branch.