import { Track } from '../tracks';
/**
 * Helper methods for wellog specific DOM queries
 */
export default class UIHelper {
    /**
     * Find and return the element of elements positioned at a given
     * x-coordinate of its container element.
     * NOTE: Requires elements to be within the same containing DOM element
     * and stacked side-by-side horizontally.
     */
    static pickHStackedElement(elements: HTMLElement[], xpos: number): HTMLElement;
    /**
     * Find and return the element of elements positioned at a given
     * y-coordinate of its container element.
     * NOTE: Requires elements to be within the same containing DOM element
     * and stacked top-by-down vertically.
     */
    static pickVStackedElement(elements: HTMLElement[], ypos: number): HTMLElement;
    /**
     * Create a sample loader element for tracks. Requires track-loader-styles.scss or styles.css.
     * @param elm Track HTML element
     * @param track Track instance
     */
    static attachTrackLoader(elm: HTMLElement, track: Track): void;
}