import { IOManagerListener } from "./CfgIOManager.js";
import { CfgWindowEventManager } from "./CfgWindowEventManager.js";
/**
 * This class is used to coordinate sending and receiving using the post message-API.
 * See https://developer.mozilla.org/en-US/docs/Web/API/Window/postMessage
 */
export declare class CfgWindowMessageManager extends CfgWindowEventManager<"message", unknown> {
    private static _instance;
    static get instance(): CfgWindowMessageManager;
    /**
     * If uncertain about security, please read https://developer.mozilla.org/en-US/docs/Web/API/Window/postMessage
     */
    private constructor();
    private _doListenForIncoming;
    private _remoteEnds;
    private _targetOrigin;
    private _acceptableMessageOrigin;
    /**
     * Listen for incoming messages or not
     */
    set doListenForIncoming(v: boolean);
    /**
     * What window object outgoing messages should be sent to. Leave empty if you don't want to broadcast.
     */
    set remoteEnds(v: Window[]);
    /**
     * What origins of the target window are acceptable.
     */
    set targetOrigin(v: string);
    /**
     * @param _acceptableMessageOrigin What message origins we accept incoming from.
     */
    set acceptableMessageOrigin(v: string);
    listenForMessage(l: IOManagerListener, messageKey: string): boolean;
    stopListenForMessage(l: IOManagerListener): boolean;
    send(messageKey: string, data: unknown): void;
    protected _containerListener(event: MessageEvent): void;
    protected readonly eventType = "message";
    protected getDataFromEvent(event: MessageEvent): unknown;
}
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