/// <reference types="mapbox-gl" />
import './data-chart.css';
import { WidgetBase } from '@csnext/cs-client';
import { DataChartOptions } from '../..';
import { DataSources, InsightDashboardPanel, InsightSection } from '@csnext/cs-data';
import { StatsDatasource } from '../../datasources/stats-datasource';
import { GeojsonPlusLayer } from '../../layers/geojson-plus-layer';
export declare class DataChart extends WidgetBase {
    panel: InsightDashboardPanel;
    data: StatsDatasource;
    section: InsightSection;
    layer: GeojsonPlusLayer;
    features: mapboxgl.MapboxGeoJSONFeature[];
    mark?: string;
    vegadata: any;
    get options(): DataChartOptions;
    get dataSources(): DataSources | undefined;
    get vegaid(): string;
    mounted(): void;
    contentLoaded(d: DataSources): void;
    updateChart(): void;
    private getTitle;
    private updateVega;
    private getPropertyGroupValues;
}