Is it possible to use Dart with the App Engine Channel API?

[Bjorn Tipling]

https://developers.google.com/appengine/docs/go/channel/javascript

This requires some JavaScript, but Dart does have websockets so maybe there is some way to get this to work. Has anyone tried?

Thanks.

[Justin Fagnani]

You could write a shim that uses the JS channel API and calls window.postMessage when receiving messages from the channel, and handle your custom messages in Dart.

-Justin

[Bjorn Tipling]

Ok I will try this. Thank you.

[Moises Belchin]

Very useful if someone can post some code sample

Many people have asked how to work with Dart and JavaScript and I think this is very interesting for all of us.

Thanks all.

Regards 

Moisés Belchín.

2012/5/18 Bjorn Tipling <bjorn....@gmail.com>

[Seth Ladd]

Hi Moises,

I too would love to see sync JavaScript interop. In the meantime, you might find this post on JSONP interesting (it shows how to use postMessage), as well as Chris Buckett's cleaned up JSONP class

In the meantime, you might want to star this bug: http://code.google.com/p/dart/issues/detail?id=625

Thanks,

Seth

[Justin Fagnani]

FYI, I just pushed a Dart port of the Channel API that delegates to the JavaScript version via custom events.

You can find it here: http://code.google.com/p/gae-channel-api-dart/

Hope it's useful!

-Justin