When using PopupService with a component as content it is not possible to inject the PopupRef into the component's constructor.

Allow injecting PopupRef into the component's constructor like it is possible with DialogService and DialogRef.

https://www.telerik.com/kendo-angular-ui/components/dialogs/dialog/service/#toc-content-component

This will allow to call close on the PopupRef from within the component.

For example, if I am using the Kendo Splitbutton, the popup should have a class like ".k-split-button-popup". This will make it far easier to style the popups based on their "parent" or "creator".

For now, I am using the popupSettings, but I think it would be beneficial for it to be automatic.