import { InteractionEvent } from "pixi.js";
import { DButton, DButtonEvents, DButtonOptions, DThemeButton } from "./d-button";
import { DOnOptions } from "./d-on-options";
import { UtilFileAs as DButtonFileAs, UtilFileEvents, UtilFileOpener } from "./util/util-file-opener";
export { DButtonFileAs };
/**
 * {@link DButtonFile} events.
 */
export interface DButtonFileEvents<VALUE, EMITTER> extends DButtonEvents<VALUE, EMITTER>, UtilFileEvents<EMITTER> {
}
/**
 * {@link DButtonFile} "on" options.
 */
export interface DButtonFileOnOptions<VALUE, EMITTER> extends Partial<DButtonFileEvents<VALUE, EMITTER>>, DOnOptions {
}
export type DButtonFileChecker = () => Promise<unknown> | boolean;
/**
 * {@link DButtonFile} options.
 */
export interface DButtonFileOptions<VALUE = unknown, THEME extends DThemeButtonFile<VALUE> = DThemeButtonFile<VALUE>, EMITTER = any> extends DButtonOptions<VALUE, THEME, EMITTER> {
    /**
     * An output format.
     */
    as?: keyof typeof DButtonFileAs | DButtonFileAs;
    /**
     * A checker called before opening a file.
     * If the checker returns false or the returned promise object is rejected,
     * files will not be opened.
     */
    checker?: DButtonFileChecker;
    on?: DButtonFileOnOptions<VALUE, EMITTER>;
}
/**
 * {@link DButtonFile} theme.
 */
export interface DThemeButtonFile<VALUE = unknown> extends DThemeButton<VALUE> {
}
/**
 * A file selector.
 */
export declare class DButtonFile<VALUE = unknown, THEME extends DThemeButtonFile<VALUE> = DThemeButtonFile<VALUE>, OPTIONS extends DButtonFileOptions<VALUE, THEME> = DButtonFileOptions<VALUE, THEME>> extends DButton<VALUE, THEME, OPTIONS> {
    protected _checker?: DButtonFileChecker | null;
    protected _opener?: UtilFileOpener;
    protected getChecker(): DButtonFileChecker | null;
    protected getOpener(): UtilFileOpener;
    protected newOpener(): UtilFileOpener;
    protected onActivate(e?: InteractionEvent | KeyboardEvent | MouseEvent | TouchEvent): void;
    protected check(onResolve: () => void): void;
    open(): void;
    protected getType(): string;
}