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42 lines
1.3 KiB
42 lines
1.3 KiB
import {ColumnGetters} from 'app/common/ColumnGetters';
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import * as gristTypes from 'app/common/gristTypes';
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/**
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*
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* An implementation of ColumnGetters for the server, currently
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* drawing on the data and metadata prepared for CSV export.
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*
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*/
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export class ServerColumnGetters implements ColumnGetters {
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private _rowIndices: Map<number, number>;
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private _colIndices: Map<number, string>;
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constructor(rowIds: number[], private _dataByColId: {[colId: string]: any}, private _columns: any[]) {
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this._rowIndices = new Map<number, number>(rowIds.map((rowId, r) => [rowId, r] as [number, number]));
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this._colIndices = new Map<number, string>(_columns.map(col => [col.id, col.colId] as [number, string]));
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}
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public getColGetter(colRef: number): ((rowId: number) => any) | null {
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const colId = this._colIndices.get(colRef);
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if (colId === undefined) {
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return null;
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}
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const col = this._dataByColId[colId];
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return rowId => {
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const idx = this._rowIndices.get(rowId);
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if (idx === undefined) {
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return null;
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}
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return col[idx];
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};
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}
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public getManualSortGetter(): ((rowId: number) => any) | null {
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const manualSortCol = this._columns.find(c => c.colId === gristTypes.MANUALSORT);
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if (!manualSortCol) {
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return null;
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}
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return this.getColGetter(manualSortCol.id);
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}
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}
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