dynamic loading of next rows

packages/datalib/src/GridDisplay.ts

@@ -1,9 +1,14 @@
 import GridConfig from "./GridConfig";
 
+export interface DisplayColumn {
+  columnName: string;
+}
+
 export default abstract class GridDisplay {
   constructor(
     public config: GridConfig,
     protected setConfig: (configh: GridConfig) => void
   ) {}
   abstract getPageQuery(offset: number, count: number): string;
+  columns: DisplayColumn[];
 }