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API REFERENCE

ViewportDatasource

Fields, allowed values, and APIs that use ViewportDatasource.

Markdown source Features

Type definition

A question mark (?) marks an optional field; readonly marks a value you should not change directly. A union (|) accepts one of the listed forms. Functions are callbacks that Grid invokes at the relevant point.

typescript
export interface ViewportDatasource<TRow> {
  init(callbacks: {
    setRowCount(count: number): void;
    setRowData(startIndex: number, rows: TRow[]): void;
  }): void;
  setViewportRange(
    firstRow: number,
    lastRow: number,
    request?: ViewportRequestContext,
  ): void;
  destroy?(): void;
}

APIs using this type

  • viewportDatasource

    Viewport model supplying data for visible row ranges. Implement initialization, range changes, and cleanup.