import * as d3 from 'd3';
/**
 * Base class for chart components
 *
 * This object will create a <div> DOM element that contains the
 * <div class="chartDivContainer">
 *  <svg class="svgContainer">
 *    <g class="maincontainer">
 */
export declare class OWIDChart {
    protected _data: [];
    protected _marginTop: number;
    protected _marginBottom: number;
    protected _marginLeft: number;
    protected _marginRight: number;
    protected _heightTotal: number;
    protected _widthTotal: number;
    /** _height / _width refer to internal visualization area (<g> maincontainer within <svg>) */
    protected _height: number;
    protected _width: number;
    protected _unit: string;
    protected _className: string;
    protected _valuesRange: [any, any];
    protected _dimensions: {
        years: any;
        entities: any;
    };
    protected _scaleColor: d3.ScaleOrdinal<string, string, never>;
    protected _mainDivContainer: d3.Selection<any, undefined, null, undefined>;
    protected _mainContainer: d3.Selection<any, undefined, null, undefined>;
    protected _chartSVG: any;
    protected _toolTip: any;
    protected _colorScale: any;
    protected _chartContent: any;
    protected _x: any;
    protected _y: any;
    constructor(data: any, options: any);
    setupSVGElements(): void;
    /**
     * startupSettings()
     * Updated charts internat height / width dimensons based on current margins
     *
     * This fucntion can / should be called after there has been a change in configurations (e.g. width)
     */
    protected baseStartupSettings(): void;
    protected startupSettings(): void;
    /**
   * Gets / sets the data source
   * @param data
   * @returns current data | current OWIDBarChart object
   */
    data(data: []): OWIDChart | [];
    /**
     * Gets / sets the total chart width
     * @param width
     * @returns current width | current OWIDBarChart object
     */
    width(width: number): OWIDChart | number;
    /**
     * Gets / sets the unit associated to values in our data
     * @param unit
     * @returns current unit | current OWIDBarChart object
     */
    unit(unit: string): OWIDChart | string;
    /**
     * Gets / sets the option for
     * @param options
     * @returns current unit | current OWIDBarChart object
     */
    x(options: {}): OWIDChart | {};
    /**
   * Gets / sets the option for
   * @param options
   * @returns current unit | current OWIDBarChart object
   */
    y(options: {}): OWIDChart | {};
    /**
     * Extracts from the data the collection of unique values for a given dimension (e.g. years / entityNames)
     *
     * @param dimension dimension included in the data ("year" | "entityName")
     * @returns array with dimension values
     */
    protected getDimensionValues(dimension: string): any;
    /**
      * Auxiliary function that gets the size of a text given the text / fontSize and fontFace
      *
      * @param text
      * @param fontSize
      * @param fontFace
      * @returns estinated text width
      */
    protected getTextWidth(text: any, fontSize: string | number, fontFace: string): number;
    render(): void;
    node(): any;
    css(): string;
}