preact-spatial-navigation/dist/utils/eventBus.d.ts

A powerful Preact library for TV-style spatial navigation with LRUD algorithm, virtualized lists/grids, and smart TV support

import type { FocusDetail } from '../types';
/**
 * Events emitted by the spatial navigation system
 */
export type NavigationEvents = {
    'focus': FocusDetail;
    'blur': FocusDetail;
    'willmove': {
        direction: string;
        sectionId?: string;
    };
    'navigatefailed': {
        direction: string;
    };
    'enterdown': void;
    'enterup': void;
    [key: string]: any;
};
/**
 * Event bus for spatial navigation events
 * Uses mitt.js for lightweight event emission
 */
declare class NavigationEventBus {
    private emitter;
    constructor();
    /**
     * Subscribe to a navigation event
     */
    on<K extends keyof NavigationEvents>(event: K, handler: (data: NavigationEvents[K]) => void): void;
    /**
     * Unsubscribe from a navigation event
     */
    off<K extends keyof NavigationEvents>(event: K, handler: (data: NavigationEvents[K]) => void): void;
    /**
     * Emit a navigation event
     */
    emit<K extends keyof NavigationEvents>(event: K, data: NavigationEvents[K]): void;
    /**
     * Clear all event handlers
     */
    clear(): void;
}
export declare const navigationEventBus: NavigationEventBus;
export {};
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