import { ConfirmDialogComponent } from '../components/confirm-dialog/confirm-dialog.component';
import { AlertDialogComponent } from '../components/alert-dialog/alert-dialog.component';
import { PromptDialogComponent } from '../components/prompt-dialog/prompt-dialog.component';
import { DialogData } from '../models/DialogData';
import { DialogResult } from '../models/DialogResult';
import { MatDialog, MatDialogConfig, MatDialogRef } from '@angular/material/dialog';
import * as i0 from "@angular/core";
/**  Service to open own modal interacting dialog components based on Material Design via [MatDialog]{@link MatDialog} service. */
export declare class DialogService {
    private dialog;
    /**
     * Only inject service.
     * @param dialog Service to open Material Design modal dialogs.
     */
    constructor(dialog: MatDialog);
    /**
     * Open the alert modal dialog and show his content.
     * Alert dialog should be used to show the user a crucial message.
     * @param title Dialog title.
     * @param content Informs user about message.
     * @param configMatDialog Extra configuration options.
     * @returns Reference to the newly-opened alert dialog. When dialog closes an empty object is returned.
     */
    openAlertDialog(title: string, content: string, configMatDialog?: MatDialogConfig<DialogData>): MatDialogRef<AlertDialogComponent, DialogResult>;
    /**
     * Open question model dialog with positive and negative answer button.
     * @param title Dialog title.
     * @param question Question forming the idea of the whole dialogue with the user.
     * @param negativeChoiceLabel Negative answer label
     * @param positiveChoiceLabel Positive answer label
     * @param configMatDialog Extra configuration options.
     * @returns Reference to the newly-opened question dialog. When dialog is closed made choice is returned.
     */
    openConfirmDialog(title: string, question: string, negativeChoiceLabel: string, positiveChoiceLabel: string, configMatDialog?: MatDialogConfig<DialogData>): MatDialogRef<ConfirmDialogComponent, DialogResult>;
    /**
     * Open question model dialog with answer from user as message response.
     * @param title Dialog title.
     * @param question Question forming the idea of the whole dialogue with the user.
     * @param placeholder Label for answer input box.
     * @param configMatDialog Extra configuration options.
     * @returns Reference to the newly-opened question with answer dialog.
     */
    openPromptDialog(title: string, question: string, placeholder: string, configMatDialog?: MatDialogConfig<DialogData>): MatDialogRef<PromptDialogComponent, any>;
    static ɵfac: i0.ɵɵFactoryDeclaration<DialogService, never>;
    static ɵprov: i0.ɵɵInjectableDeclaration<DialogService>;
}