Expose window events in Native mode

[gavinpotter]

"In native mode the app.native.main_window object allows you to access the underlying window. It is an async version of Window from pywebview".

Would it be possible to expose the events associated with the pywebview window. My use case is that I want to be able to take various actions when the native window is minimised and restored.

Thanks

Gavin

[falkoschindler]

Thanks for the suggestion, @gavinpotter!

I think it would be possible. But it's not trivial:

• We somehow need to get the event registration from the main process to the webview process. A callback can't be pickled, so we need to manage all registered callbacks on the main process and call them when the event happens.
• We need to get the event back to the main process when it happens. We already have a "message queue" and a "response queue". Maybe we need another "event queue".
• I'm not sure if we should only send events that have registered callbacks (less traffic), or simply every possible event (easier to implement).

We could certainly use some help implementing this feature. Would you - or anyone else - like to create a pull request? 🙂

[gavinpotter]

That does sound complicated - beyond what I could manage. I'll look for an alternative. The approach I'm going to take is to see what else changes when each event occurs - and act on that. So if, for instance, you maximise a minimised window, the size of the window increases etc which you can capture.