/**
 * This module includes CanKing data provider React components.
 * The CanKingDataProvider component is needed to be at the root of the component tree to
 * make it possible to use the CanKing UI Controls.
 *
 * @example
 * ```tsx
 * const container = document.getElementById('root') as HTMLElement;
 * const root = createRoot(container);
 * root.render(
 *   <React.StrictMode>
 *     <CanKingDataProvider>
 *       <App />
 *     </CanKingDataProvider>
 *   </React.StrictMode>,
 * );
 * ```
 *
 * @packageDocumentation
 */
import React from 'react';
import { Device, NodeStatus, LogMessage, MeasurementSetup, OnlineStatus, IUserSettings, IWorkspacePaneData } from '../models';
/**
 * Possible CanKing event channels for an extension to listen to.
 */
type extensionEventChannels = 'devices-changed' | 'new-log-messages' | 'online-status-changed' | 'periodic-trans-started' | 'periodic-trans-stopped' | 'new-measurement-data' | 'new-measurement-status' | 'user-settings-changed' | 'meas-setup-changed' | 'workspace-panes-changed';
/**
 * Starts a subscription to an event raised by CanKing.
 *
 * @typeParam T - Type of the data that will be sent by the event.
 * @param key - A unique key for this subscription, this key should be used when calling removeEventListener to unsubcribe
 *              from the event. The uuid package can be used for generating unique keys.
 * @param event - The event channel to subscibe to.
 * @param callback - A callback that will be called when new data arrives on the channel.
 * @param options - Optional options including following options:
 *                  numberOfHistoryFrames - used when adding a 'new-measurement-data' event listener to control number of frames to read from history at initialization.
 * @returns A promise that will resolve with start values for the event.
 * @internal
 */
export declare function addEventListener<T>(key: string, event: extensionEventChannels, callback: (data: T) => void, options?: {
    numberOfHistoryFrames?: number;
}): Promise<T>;
/**
 * Unsubscribes from an event.
 *
 * @param key - The key that was used when addEventListener was called.
 * @param event - The event channel to unsubscribe from.
 * @internal
 */
export declare const removeEventListener: (key: string, event: extensionEventChannels) => Promise<void>;
/**
 * The UserSettings context
 * @internal
 */
export declare const UserSettingsContext: React.Context<IUserSettings>;
/**
 * The Devices context
 * @internal
 */
export declare const DevicesContext: React.Context<Device[]>;
/**
 * The MeasurementStatus context
 * @internal
 */
export declare const MeasurementStatusContext: React.Context<NodeStatus[]>;
/**
 * The MeasurementSetup context
 * @internal
 */
export declare const MeasurementSetupContext: React.Context<MeasurementSetup>;
/**
 * The OnlineStatus context
 * @internal
 */
export declare const OnlineStatusContext: React.Context<OnlineStatus>;
/**
 * The RunningPeriodicTransmissions context
 * @internal
 */
export declare const RunningPeriodicTransmissionsContext: React.Context<string[]>;
/**
 * The LogMessages context
 * @internal
 */
export declare const LogMessagesContext: React.Context<LogMessage[]>;
/**
 * The WorkspacePanes context
 * @internal
 */
export declare const WorkspacePanesContext: React.Context<[IWorkspacePaneData[], React.Dispatch<React.SetStateAction<IWorkspacePaneData[]>>]>;
/**
 * Creates a data provider to access CanKing data.
 * The CanKingDataProvider component is needed to be at the root of the component tree to
 * make it possible to use the CanKing UI Controls.
 *
 * @example
 * ```tsx
 * const container = document.getElementById('root') as HTMLElement;
 * const root = createRoot(container);
 * root.render(
 *   <React.StrictMode>
 *     <CanKingDataProvider>
 *       <App />
 *     </CanKingDataProvider>
 *   </React.StrictMode>,
 * );
 * ```
 *
 * @param props Component properties.
 * @returns The CanKingDataProvider React component.
 */
declare const CanKingDataProvider: ({ initialUserSettings, children, }: {
    initialUserSettings?: IUserSettings;
    children?: React.ReactNode;
}) => import("react/jsx-runtime").JSX.Element;
export default CanKingDataProvider;