import { CollectionView } from '../data/CollectionView';
import { EventHandler } from '../events/EventBus';
/**
 * Maps stored key values to display values for a column, so the grid can show a
 * friendly label (a country name) while the cell holds a raw value (a code).
 * Build it from a plain array of strings, an array of objects plus value/display
 * paths, or a {@link CollectionView}.
 */
export declare class DataMap {
    readonly collectionView: CollectionView;
    selectedValuePath: string;
    displayMemberPath: string;
    /** Allow values that are not on the map (free text). Default false. */
    isEditable: boolean;
    /** Order the lookup list by display value. Default true. */
    sortByDisplayValues: boolean;
    /**
     * Optional hook for dynamic data maps: given the row being edited, return the
     * subset of source items allowed for it. Lets one column's choices depend on
     * another (e.g. cities filtered by the row's country).
     */
    itemsFilter?: (dataItem: unknown) => unknown[];
    private events;
    constructor(itemsSource: unknown[] | CollectionView, selectedValuePath?: string, displayMemberPath?: string);
    on(type: 'mapChanged', handler: EventHandler<void>): () => void;
    onMapChanged(): void;
    /** All keys, ordered by display value when sortByDisplayValues is on. */
    getKeyValues(dataItem?: unknown): unknown[];
    /** All display values, in the same order as getKeyValues. */
    getDisplayValues(dataItem?: unknown): string[];
    getDisplayValue(key: unknown): string;
    getKeyValue(displayValue: string): unknown;
    getDataItem(key: unknown): unknown;
    private get items();
    private itemsFor;
    private keyOf;
    private displayOf;
    private ordered;
}