Hello Bart Nijssen,
Thank you for contacting Telerik Support.
Can you please specify where you want to duplicate this behavior - do you want it implemented to already existing Sitefinity widgets (we already have this in widgets that have a list-mode widgets like Events, Blog Posts, News etc.)
If you want to duplicate such functionality in a custom widget, please take a look at the Products module sample and browse the Products Module Documentation
I hope this information helps. Please let me know if I can assist you any further with this service request. Thank you in advance.
the Telerik team