vaadin-grid and scroll threshold events?

Flow
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Hi, I’m reposting here from a question I just posted in the gitter chatroom.

I am trying to make vaadin-grid play with Ajax GET calls that use an offset and limit against a remote RESTful service, and append the incoming data as it arrives. It seems to work OK, but doing the append all at once as a series of asynchronous calls is not optimal because things are rather slow (about 1 sec to fetch about 1000 rows), so this background updating takes in the case of 10K rows about 10-15 seconds to complete.

I would much prefer it if somehow I could hook the successive fetches directly into the infinite scrolling so that it only makes another Ajax call as it reaches the scroll bottom. What I am looking for is something like what is available in iron-scroll-threshold. I can’t seem to find any vaadin events associated with scroll threshold, for instance, in the vaadin-grid TableScrollBehavior. Is this feasible? Is it a horrible idea? (BTW, I am familiar with the classic problem when acquiring data like this, but the sources of the data either are very stable or actually implement a kind of time-bound snapshot on the back-end.)

Our project is still on Polymer 1.7, will be updated soon. I’m using vaadin-grid 2.

Any advice would be greatly appreciated!

Thanks, Al

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Related to this: I’ve been trying to integrate vaadin-grid directly with iron-scroll-threshold, but it doesn’t look like the grid table scroller can be set to take a different scroll target. Is that true, or have I overlooked something?

Thanks, Al