import type { Viewport } from '../Viewport.js';
import type { Container } from '../Container.js';
import { Size } from '../geometry.js';
import { type Props as NotificationProps, Notification } from './Notification.js';
export interface Props extends NotificationProps {
    /**
     * When true, the alert is presented as a modal overlay.
     * Default: false
     */
    visible?: boolean;
    /**
     * If true, paints the entire screen with dimStyle before rendering.
     * Default: true
     */
    dim?: boolean;
    /**
     * If true, pressing Escape dismisses the alert.
     * Default: true
     */
    dismissOnEsc?: boolean;
    /**
     * If true, clicking outside the alert dismisses it.
     * Default: true
     */
    dismissOnClick?: boolean;
    /**
     * Called when the alert is dismissed (via click-outside, esc, or dismiss()).
     */
    onDismiss?: () => void;
}
/**
 * A notification meant to be presented in a modal overlay, drawn in a
 * rounded-corner Box.
 *
 * Call `alert.presentFrom(owner)` to add the alert to a container and present
 * it as a modal. The alert renders as zero-size in the layout; when visible,
 * it presents a Modal overlay during `render()`.
 *
 * If the owner is removed from the tree, the alert is automatically removed
 * too — no modal will be presented.
 *
 * Usage (core):
 *   const alert = new Alert({
 *     title: 'Confirm Delete',
 *     purpose: 'cancel',
 *     dismissOnEsc: true,
 *     onDismiss() { console.info('dismissed') },
 *     children: [
 *       new Text({text: 'Are you sure?'}),
 *       new Button({title: 'Cancel', onClick() { alert.dismiss() }}),
 *     ],
 *   })
 *
 *   new Button({
 *     title: 'Delete',
 *     onClick() { alert.presentFrom(layout) },
 *   })
 */
export declare class Alert extends Notification {
    #private;
    constructor(props?: Props);
    update(props: Props): void;
    get visible(): boolean;
    set visible(value: boolean);
    /**
     * Present this alert as a modal, adding it to the given owner container.
     * The alert is removed from the owner when dismissed.
     */
    presentFrom(owner: Container): void;
    /**
     * Dismiss this alert, removing it from its owner container.
     */
    dismiss(): void;
    naturalSize(_available: Size): Size;
    render(viewport: Viewport): void;
}