import { CacheableTile, CachedTile } from './CacheableTile.js';
import { FetchableTile } from './FetchableTile.js';
import { FetchFn } from '@allmaps/types';
import { CacheableTileFactory, TileCacheOptions, MapPruneInfo } from '../shared/types.js';

/**
 * Class that fetches and caches IIIF tiles.
 */
export declare class TileCache<D> extends EventTarget {
    #private;
    cacheableTileFactory: CacheableTileFactory<D>;
    fetchFn?: FetchFn;
    tileCacheForTilesFromSprites?: TileCache<D>;
    protected tilesByTileUrl: Map<string, CacheableTile<D>>;
    protected mapIdsByTileUrl: Map<string, Set<string>>;
    protected tileUrlsByMapId: Map<string, Set<string>>;
    protected tilesFetchingCount: number;
    protected tileRemoveQueue: {
        tileUrl: string;
        mapId: string;
    }[];
    protected fetchableTiles: FetchableTile[];
    constructor(cacheableTileFactory: CacheableTileFactory<D>, partialTileCacheOptions?: Partial<TileCacheOptions<D>>);
    /**
     * Get the tiles in this cache
     *
     * @returns
     */
    getCacheableTiles(): IterableIterator<CacheableTile<D>>;
    /**
     * Get a specific tile in this cache
     *
     * @param tileUrl - the URL of the requested tile
     * @returns
     */
    getCacheableTile(tileUrl: string): CacheableTile<D> | undefined;
    /**
     * Get the tiles in this cache, corresponding to a specific map
     *
     * @param mapId - ID of the map
     * @returns
     */
    getMapCacheableTiles(mapId: string): CacheableTile<D>[];
    /**
     * Get the tiles in this cache that have been fetched
     *
     * @returns
     */
    getCachedTiles(): CachedTile<D>[];
    /**
     * Get a specific cached tile in this cache that has been fetched
     *
     * @param tileUrl - the URL of the requested tile
     * @returns
     */
    getCachedTile(tileUrl: string): CachedTile<D> | undefined;
    /**
     * Get the tiles in this cache, corresponding to a specific map, that have been fetched
     *
     * @param mapId - ID of the map
     * @returns
     */
    getMapCachedTiles(mapId: string): CachedTile<D>[];
    /**
     * Get the URLs of tiles in this cache
     *
     * @returns
     */
    getTileUrls(): IterableIterator<string>;
    /**
     * Get the URLs of tiles in this cache, corresponding to a specific map
     *
     * @param mapId - ID of the map
     * @returns
     */
    getMapTileUrls(mapId: string): Set<string>;
    /**
     * Get the Tile Cache options
     *
     * @param partialTileCacheOptions - Options
     */
    setOptions(partialTileCacheOptions?: Partial<TileCacheOptions<D>>): void;
    /**
     * Process the request for new tiles to be added to this cache
     *
     * @param fetchableTiles
     */
    requestFetchableTiles(fetchableTiles: FetchableTile[]): void;
    /**
     * Returns a promise that resolves when all requested tiles are loaded.
     * This could happen immidiately, in case there are no ongoing requests and the tilesFetchingCount is zero,
     * or in a while, when the count reaches zero and the ALLREQUESTEDTILESLOADED event is fired.
     */
    allRequestedTilesLoaded(): Promise<void>;
    /**
     * Prune tiles in this cache using the provided prune info
     */
    prune(pruneInfoByMapId: Map<string, MapPruneInfo>): void;
    clear(): void;
    destroy(): void;
    protected requestFetchableTile(fetchableTile: FetchableTile): void;
    protected addCacheableTile(cacheableTile: CacheableTile<D>): void;
    addCachedTile(cachedTile: CachedTile<D>): void;
    protected delayedRemoveCacheableTileForMapId(tileUrl: string, mapId: string): void;
    protected cancelDelayedRemoveCacheableTileForMapId(tileUrl: string, mapId: string): void;
    protected removeCacheableTileForMapId(tileUrl: string, mapId: string): void;
    protected tileFetched(event: Event): void;
    protected tileFetchError(event: Event): void;
    protected tilesFromSpriteTile(event: Event): void;
    protected passTilesFromSprites(tileUrl?: string): void;
    protected addMapIdForTileUrl(mapId: string, tileUrl: string): Set<string>;
    protected removeMapIdForTileUrl(mapId: string, tileUrl: string): Set<unknown>;
    protected addTileUrlForMapId(tileUrl: string, mapId: string): Set<string>;
    protected removeTileUrlForMapId(tileUrl: string, mapId: string): Set<unknown>;
    get finished(): boolean;
    protected updateTilesFetchingCount(delta: number): void;
    protected addEventListenersToCacheableTile(cacheableTile: CacheableTile<D>): void;
    protected removeEventListenersFromCacheableTile(cacheableTile: CacheableTile<D>): void;
}