Infinite Scroll without hitting the bottom of the list

[JerContact]

Currently it looks like there is only createFooter and createHeader options in PlutoGrid, is there a way to update based on the scroll itself to do infinite scrolling behind the scenes without any lag when someone gets to the bottom of the list?

[andzsinszan]

The infinite scroll demo
https://weblaze.dev/pluto_grid/build/web/#feature/row-infinity-scroll
Source
https://github.com/bosskmk/pluto_grid/blob/master/demo/lib/screen/feature/row_infinity_scroll_screen.dart

The gist of it is the PlutoInfinityScrollRows class, which triggers a specified fetch callback function (e.g., doFetch(PlutoInfinityScrollRowsRequest req)) when it require more data.

        createFooter: (s) => PlutoInfinityScrollRows(
          // First call the fetch function to determine whether to load the page.
          // Default is true.
          initialFetch: true,

          // Decide whether sorting will be handled by the server.
          // If false, handle sorting on the client side.
          // Default is true.
          fetchWithSorting: true,

          // Decide whether filtering is handled by the server.
          // If false, handle filtering on the client side.
          // Default is true.
          fetchWithFiltering: true,
          fetch: doFetch,
          stateManager: s,
        ),

---

I changed fetch:fetch in the original code to fetch:doFetch above for clarity. To be honest, the naming fetch for the argument is probably not the best choice as it fails to convey that it requires a function pointer as value; not a boolean flag, nor an int (cf. fetch: true, fetch: 100 may seem plausible setttings, but they are not). So probably fetchFunction or fetchCallback or callback would have been a better choice. One would not try to set a boolean or int for an argument named fetchFunction.