Hello,
I’m using Vaadin with
Google App Engine
, and I have problems with upload (like every user of GAE): Vaadin standard components to upload large data does not show progress bars with GAE, which is unacceptable for users.
Then, after some searching, I found this jQuery plugin:
jQuery File Upload
. Its
demo
is actually running from Google App Engine (but with Python): it is amazing, just what I needed.
I installed the plug-in, created the servlets, everything worked fine (starting the plug-in from an iframe from a CustomLayout).
But now I have another problem: how to fully integrate this plug-in with Vaadin? I want to receive events like “upload completed” or “upload canceled” and control the component from server, stopping and resuming uploads for example.
The only thing I have is a bunch of Javascript files and the
API documentation
. From where I can start trying to integrate it with Vaadin? I have no idea :wacko:
The main problem is how to notify the server from pure Javascript.
Can you point me some directions?
Thank you.