import type { BrowserTypes, Channel, Context, ContextHandler, DisplayMetadata, Listener } from '@finos/fdc3';
import { FullyQualifiedAppIdentifier, IProxyMessagingProvider } from '../contracts.js';
import { MessagingBase } from '../messaging/index.js';
import { ContextListener } from './channel.contracts.js';
/**
 * Represents a context channel that applications can use to send and receive
 * context data.
 */
export declare class PublicChannel extends MessagingBase implements Channel {
    private contextListener;
    constructor(channelDetails: BrowserTypes.Channel, appIdentifier: FullyQualifiedAppIdentifier, messagingProvider: IProxyMessagingProvider, contextListener: ContextListener);
    private readonly _id;
    get id(): string;
    private readonly _type;
    get type(): Channel['type'];
    private readonly _displayMetadata?;
    get displayMetadata(): DisplayMetadata | undefined;
    broadcast(context: Context): Promise<void>;
    getCurrentContext(contextType?: string | undefined): Promise<Context | null>;
    addContextListener(contextType: string | null, handler: ContextHandler): Promise<Listener>;
    addContextListener(handler: ContextHandler): Promise<Listener>;
}