import type { Observable, Subscription } from 'rxjs';
import type { Maybe } from 'maybe-not';
import type { ResponseCallback, TectonMessageSuccessResponse } from './response';
/**
 * Message protocol types for inter-window communication.
 * REQUEST expects a response, RESPONSE answers a request,
 * MESSAGE is one-way, and BROADCAST reaches all listeners.
 */
export type Protocol = 'REQUEST' | 'RESPONSE' | 'MESSAGE' | 'BROADCAST';
/**
 * Interface for the message bus communication system.
 * Provides methods for sending and receiving messages between windows.
 *
 * @typeParam T - The expected type of the message value (for onMessage)
 * @typeParam R - The expected type of the response value (for sendRequest/sendResponse)
 *
 * @see MessageBus - Implementation in q2-tecton-common/utility
 */
export interface TectonMessageBus {
    onMessage<T>(type: string, protocol?: Protocol, guid?: number | null): Observable<TectonMessageSuccessResponse<T>>;
    sendRequest<R>(type: string, message: Maybe<string>): Promise<TectonMessageSuccessResponse<R>>;
    sendResponse<T, R>(type: string, generateResponse: ResponseCallback<T, R>): Subscription;
}
//# sourceMappingURL=message-bus.d.ts.map