import type { IDisposable, JsonObject, JsonValue } from "@elgato/utils";
import type { DialAction, KeyAction } from "./actions/index.js";
import { type PropertyInspectorDidAppearEvent, type PropertyInspectorDidDisappearEvent, SendToPluginEvent } from "./events/index.js";
/**
 * Controller capable of sending/receiving payloads with the property inspector, and listening for events.
 */
declare class UIController {
    #private;
    /**
     * Initializes a new instance of the {@link UIController} class.
     */
    constructor();
    /**
     * Gets the action associated with the current property.
     * @returns The action; otherwise `undefined` when a property inspector is not visible.
     */
    get action(): DialAction | KeyAction | undefined;
    /**
     * Occurs when the property inspector associated with the action becomes visible, i.e. the user
     * selected an action in the Stream Deck application..
     * @template T The type of settings associated with the action.
     * @param listener Function to be invoked when the event occurs.
     * @returns A disposable that, when disposed, removes the listener.
     */
    onDidAppear<T extends JsonObject = JsonObject>(listener: (ev: PropertyInspectorDidAppearEvent<T>) => void): IDisposable;
    /**
     * Occurs when the property inspector associated with the action disappears, i.e. the user unselected
     * the action in the Stream Deck application.
     * @template T The type of settings associated with the action.
     * @param listener Function to be invoked when the event occurs.
     * @returns A disposable that, when disposed, removes the listener.
     */
    onDidDisappear<T extends JsonObject = JsonObject>(listener: (ev: PropertyInspectorDidDisappearEvent<T>) => void): IDisposable;
    /**
     * Occurs when a message was sent to the plugin _from_ the property inspector.
     * @template TPayload The type of the payload received from the property inspector.
     * @template TSettings The type of settings associated with the action.
     * @param listener Function to be invoked when the event occurs.
     * @returns A disposable that, when disposed, removes the listener.
     */
    onSendToPlugin<TPayload extends JsonValue = JsonValue, TSettings extends JsonObject = JsonObject>(listener: (ev: SendToPluginEvent<TPayload, TSettings>) => void): IDisposable;
    /**
     * Sends the payload to the property inspector; the payload is only sent when the property inspector
     * is visible for an action provided by this plugin.
     * @param payload Payload to send.
     */
    sendToPropertyInspector(payload: JsonValue): Promise<void>;
}
export declare const ui: UIController;
export { type UIController };