import { PointerActivity } from "./pointer_activity";
declare const _PointerAction: {
    readonly CONTEXTMENU: "contextmenu";
    readonly PAN_AND_ZOOM: "pan-and-zoom";
    readonly SELECTION: "selection";
};
export type _PointerAction = typeof _PointerAction[keyof typeof _PointerAction];
/**
 * Reports pointer activity.
 */
declare class PointerActivityObserver {
    private readonly _callback;
    private readonly _targets;
    private readonly _resolvedOptions;
    /**
     * Creates a new `PointerActivityObserver` object.
     * @param callback - A function that is called whenever a pointer activity is detected.
     * @param options - An optional object that customizes this observer.
     */
    constructor(callback: PointerActivityObserver.Callback, options?: PointerActivityObserver.Options);
    /**
     * Starts observing of the `target` element.
     * @param target - An `Element` to be observed.
     */
    observe(target: Element): void;
    /**
     * Ends the observing of `target` element.
     * @param target - An `Element` to be unobserved.
     */
    unobserve(target: Element): void;
    /**
     * Ends the all observing.
     */
    disconnect(): void;
    /**
     * @hidden
     * @experimental
     */
    static _enableDevMode(): void;
}
declare namespace PointerActivityObserver {
    /**
     * A function that is called whenever a pointer activity is detected.
     * @callback
     * @param {PointerActivity} activity - The `PointerActivity` created when a `pointerenter` event fires on the target element.
     */
    type Callback = (activity: PointerActivity) => void;
    /**
     * The options to customize the `PointerActivityObserver` object.
     */
    type Options = {
        /**
         * If `true`, do not automatically pointer capture for target of the `PointerActivityObserver`.
         */
        noAutoCapture?: boolean;
    };
}
export { PointerActivityObserver, };
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