I'm User:Diskdance, and recently I'm developing a default gadget for Chinese Wikipedia enhancing MediaWiki's variant handling logic, and under certain circumstances a prompt is shown at page load asking for a user's preferred variant. Consider it as a conditional Cookie notice, and its English screenshot can be found at https://commons.wikimedia.org/wiki/File:VariantAlly-En.png.

I know this can be very disruptive on UX, so I tend to be careful about its negative impact on page views. If the gadget can collect telemetry data about the prompt's display frequency and user interactions (using e.g. WikimediaEvents), I can know about its possible impact.

Is this possible? It would be much appreciated if anybody could provide assistance.

Best wishes,