How to access selected TimeSeries region in custom HTML?

Hi, I'm working on a project where I need to annotate time series data and display related GPS trajectory data on a map. It's easy to show all the GPS data in a map. Ideally, the map should update based on the selected time range in the time series.

**My question is:**
Is there a way to access the currently selected region (start and end time) of the TimeSeries inside a custom HTML or JavaScript component?
Or is there an event like `onSelectionChange` that I can listen to?

Thanks a lot!