import { DateTime, Duration, Interval } from "luxon";
export declare const CLOCK_ELEMENT = "sp-clock";
export declare const HOURMIN_ELEMENT = "sp-hourmin";
export declare const DATETIME_ELEMENT = "sp-datetime";
export declare const TIMERANGE_ELEMENT = "sp-timerange";
export declare const hourMinRegEx: RegExp;
export declare const HOUR_MIN_24 = "HH:mm";
export declare const START_LABEL = "startlabel";
export declare const DEFAULT_START_LABEL = "Start:";
export declare const END_LABEL = "endlabel";
export declare const DEFAULT_END_LABEL = "End:";
export declare const DUR_LABEL = "durLabel";
export declare const DEFAULT_DUR_LABEL = "Dur:";
export declare const PREV_NEXT = "prev-next";
export declare class Clock extends HTMLElement {
    _time: DateTime;
    dateFormat: string;
    updateMillis: number;
    _updater: ReturnType<typeof setTimeout>;
    constructor();
    updateNow(): void;
}
/**
 * Hour and Minute chooser.
 * Use as '<sp-hourmin></sp-hourmin>'
 */
export declare class HourMinChooser extends HTMLElement {
    _time: DateTime;
    updateCallback: (time: DateTime) => void;
    popupDiv: HTMLDivElement;
    constructor();
    /**
     * Shows or hides the popup based on current visibility style
     */
    showHide(): void;
    hide(): void;
    show(): void;
    /** @private */
    xxx_adjustPopupPosition(): void;
    /** @private */
    _adjustPopupPosition(): void;
    /**
     * Get hours and minutes as Duration instead of as a DateTime. Useful for
     * relative times.
     *
     * @returns hours, minutes as Duration
     */
    get asDuration(): Duration;
    get time(): DateTime;
    set time(dt: DateTime);
    _internalSetTime(dt: DateTime): void;
}
/**
 * Date and Time chooser using native date chooser and the above
 * HourMinChooser for the hour and minute of time.
 */
export declare class DateTimeChooser extends HTMLElement {
    _time: DateTime;
    updateCallback: (time: DateTime) => void;
    hourMin: HourMinChooser;
    constructor(time?: DateTime);
    /**
     * Updates the time without triggering the callback function.
     *
     * @param  newTime new time to update sliders
     */
    updateTime(newTime: DateTime): void;
    /**
     * triggers the callback function.
     */
    timeModified(): void;
    get time(): DateTime;
    set time(dt: DateTime);
    /**
     * internal time set
     *
     * @private
     * @param  newTime new time to update
     */
    _internalSetTime(newTime: DateTime): void;
    attributeChangedCallback(name: string, oldValue: string, newValue: string): void;
    static get observedAttributes(): string[];
}
export declare const START_CHANGED = "start";
export declare const END_CHANGED = "end";
export declare const DURATION_CHANGED = "duration";
/**
 * Combination of two DateTimeChoosers to specify a start and end time.
 * A "change" event is fired when the times are modified.
 *
 * Initial values can be set via the start, end and duration attributes.
 * Start and end are ISO8601 dates, duration may either be a number of
 * seconds or an ISO8601 duration string.
 * Also, if the prev-next attribute is true, then previous, next and now
 * buttons are added to shift the time range earlier, later or so that
 * the end is the current time.
 *
 * The component remembers the last changed, so if you modify duration
 * and then modify start, the end is adjusted to keep duration the same.
 *
 */
export declare class TimeRangeChooser extends HTMLElement {
    updateCallback: (timerange: Interval) => void;
    _duration: Duration;
    startChooser: DateTimeChooser;
    endChooser: DateTimeChooser;
    _mostRecentChanged: string;
    constructor();
    toInterval(): Interval;
    getTimeRange(): Interval;
    /**
     * Updates the times without triggering the callback function.
     *
     * @param  timeRange new time interval
     */
    updateTimeRange(timeRange: Interval): void;
    get startLabel(): string;
    get endLabel(): string;
    get durationLabel(): string;
    get start(): DateTime;
    set start(time: DateTime | string);
    get end(): DateTime;
    set end(time: DateTime);
    set duration(duration: Duration);
    get duration(): Duration;
    _updateDuration(duration: Duration | string): void;
    resyncValues(curChanged: string): void;
    createPrevNext(): void;
    attributeChangedCallback(name: string, oldValue: string, newValue: string): void;
    static get observedAttributes(): string[];
}
/**
 * extracts duration from either string as ISO or number as seconds.
 *
 * @param  value               ISO string or number
 * @returns       duration
 */
export declare function extractDuration(value: string): Duration;
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