import { MatDialog } from '@angular/material/dialog';
import { MtnaAboutDialogData } from '@mtna/lib-ui/about-dialog';
import { MtnaSupportDialogData } from '@mtna/lib-ui/support-dialog';
import * as i0 from "@angular/core";
/**
 * Service to provide the updated versions and descriptions of the changes.
 *
 * @author Nick Richards <nick.richards@mtna.us>
 */
export declare class MtnaHelpMenuService {
    protected dialog: MatDialog;
    constructor(dialog: MatDialog);
    /**
     * Opens the About or Support dialog when clicked on the help menu.
     *
     * @deprecated Use the method for the specific dialog, {@link openAboutDialog} or {@link openSupportDialog}.
     * @param  dialogType - The type of dialog to open.
     * @param data the dialog data
     */
    openDialogLink(dialogType: 'About' | 'Support', data: MtnaAboutDialogData | MtnaSupportDialogData): void;
    openAboutDialog(data: MtnaAboutDialogData): void;
    openSupportDialog(data: MtnaSupportDialogData): void;
    static ɵfac: i0.ɵɵFactoryDeclaration<MtnaHelpMenuService, never>;
    static ɵprov: i0.ɵɵInjectableDeclaration<MtnaHelpMenuService>;
}