import { ElementRef } from '@angular/core';
import * as i0 from "@angular/core";
export type ExportFormat = 'json' | 'csv' | 'svg' | 'pdf';
/**
 * ChartExportMenuComponent — reusable standalone export dropdown.
 *
 * Replaces the ~40 lines of duplicated export button + dropdown HTML
 * that previously existed in every chart component.
 *
 * Usage:
 *   <ngx-chart-export-menu
 *     [formats]="['json','csv','svg','pdf']"
 *     (exportClicked)="onExport($event)"
 *   />
 */
export declare class ChartExportMenuComponent {
    formats: import("@angular/core").InputSignal<ExportFormat[]>;
    exportClicked: import("@angular/core").OutputEmitterRef<ExportFormat>;
    isOpen: import("@angular/core").WritableSignal<boolean>;
    focusedIndex: import("@angular/core").WritableSignal<number>;
    menuBtns: import("@angular/core").Signal<readonly ElementRef<HTMLButtonElement>[]>;
    toggle(event: MouseEvent): void;
    select(fmt: ExportFormat): void;
    formatIcon(fmt: ExportFormat): string;
    onArrowDown(event: Event): void;
    onArrowUp(event: Event): void;
    private navigate;
    closeOnOutsideClick(): void;
    closeOnEscape(): void;
    static ɵfac: i0.ɵɵFactoryDeclaration<ChartExportMenuComponent, never>;
    static ɵcmp: i0.ɵɵComponentDeclaration<ChartExportMenuComponent, "ngx-chart-export-menu", never, { "formats": { "alias": "formats"; "required": false; "isSignal": true; }; }, { "exportClicked": "exportClicked"; }, never, never, true, never>;
}