import { RangeColorLegendConfigInterface, RangeLegendColor } from './config';
import { DisplayStateManager } from '../../../_abstract/display-state-manager';
/**
 * Represents a range color legend component that displays a color gradient and labels for the minimum and maximum values.
 *
 * The `RangeColorLegend` class is responsible for creating and managing the visual elements of the range color legend,
 * including the color gradient, minimum and maximum value labels, and optional event handlers.
 *
 * The legend can be configured with various options, such as the color extent, label formatting, and event callbacks.
 * The legend also provides methods to show, hide, and update the configuration of the legend.
 */
export declare class RangeColorLegend extends DisplayStateManager {
    private _config;
    private _containerNode;
    private _legend;
    private _legendElements;
    private _gradientElement;
    private _extentElements;
    private _isHidden;
    /**
     * Constructs a new `RangeColorLegend` instance with the provided container node and optional configuration.
     *
     * The `RangeColorLegend` is responsible for creating and managing the visual elements of the range color legend,
     * including the color gradient, minimum and maximum value labels, and optional event handlers.
     *
     * @param containerNode - The HTML element that will contain the range color legend.
     * @param config - An optional configuration object that can be used to customize the behavior and appearance of the legend.
     */
    constructor(containerNode: HTMLElement, config?: RangeColorLegendConfigInterface);
    /**
     * Gets the minimum and maximum extent elements of the range color legend.
     * @returns The minimum and maximum extent elements, or `null` if they have not been created yet.
     */
    get extentElements(): {
        min: HTMLElement;
        max: HTMLElement;
    } | null;
    /**
     * Gets the current configuration for the range color legend.
     * @returns The current configuration object for the range color legend.
     */
    get config(): RangeColorLegendConfigInterface;
    /**
     * Hides the range color legend by removing the 'enabled' class and adding the 'disabled' class to the legend element.
     */
    hide(): void;
    /**
     * Shows the range color legend by removing the 'disabled' class and adding the 'enabled' class to the legend element.
     */
    show(): void;
    /**
     * Sets the configuration for the range color legend.
     *
     * @param config - An optional configuration object that can be used to customize the behavior and appearance of the legend.
     */
    setConfig(config?: RangeColorLegendConfigInterface): void;
    /**
     * Destroys the range color legend by removing event listeners and removing the legend and fallback elements from the container node.
     */
    destroy(): void;
    /**
     * Sets the text content of the fallback div to 'Data loading...' to indicate that data is currently being loaded.
     */
    setLoadingState(): void;
    private _createElements;
    private _createLegend;
    private _createLabelExtent;
    private _createGradientElement;
    private _updateLegend;
    private _updateGradient;
    private _updateLabelWrapper;
    private _updateSublabel;
    private _formatLabel;
    private _handleClick;
    private _handleHover;
    private _getColor;
    private _handleColorElementClick;
    private _handleColorElementHover;
}
export type { RangeColorLegendConfigInterface, RangeLegendColor };