import { ComponentConfigInterface } from '../../core/component/config';
import { ColorAccessor, GenericAccessor, NumericAccessor, StringAccessor } from '../../types/accessor';
import { FillPatternType } from '../../styles/patterns';
import { NestedDonutDirection, NestedDonutLayerSettings, NestedDonutSegment } from './types';

export interface NestedDonutConfigInterface<Datum> extends ComponentConfigInterface {
    /** Diagram angle range. Default: `[0, 2 * Math.PI]` */
    angleRange?: [number, number];
    /**
     * Direction of hierarchy flow from root to leaf.
     * `NestedDonutDirection.Inwards` starts from the outer most radius and works towards center
     * `NestedDonutDirection.Outwards` starts from the inner most radius the consecutive layers outward.
     *  Default: `NestedDonutDirection.Inwards`
    */
    direction?: NestedDonutDirection | string;
    value?: NumericAccessor<Datum>;
    /** Central label text. Default: `undefined` */
    centralLabel?: string;
    /** Central sub-label accessor function or text. Default: `undefined` */
    centralSubLabel?: string;
    /** Enables wrapping for the sub-label. Default: `true` */
    centralSubLabelWrap?: boolean;
    /**
     * Show donut background. The color is configurable via
     * the `--vis-nested-donut-background-color` and `--vis-dark-nested-donut-background-color` CSS variables.
     * Default: `false`
    */
    showBackground?: boolean;
    /** Sort function for segments. Default `undefined` */
    sort?: (a: NestedDonutSegment<Datum>, b: NestedDonutSegment<Datum>) => number;
    /** Array of accessor functions to defined the nested groups. Default: `[]` */
    layers: StringAccessor<Datum>[];
    /**
     * Configuration properties for individual layers. Accepts an accessor or constant of type:
     * {
     *   backgroundColor?: string;
     *   labelAlignment?: NestedDonutSegmentLabelAlignment;
     *   width?: number | string;
     * }
    */
    layerSettings?: GenericAccessor<NestedDonutLayerSettings, number>;
    layerPadding?: number;
    /** Corner Radius. Default: `0` */
    cornerRadius?: number;
    /** Angular size for empty segments in radians. Default: `Math.PI / 180` */
    emptySegmentAngle?: number;
    /** Hide segment labels when they don't fit. Default: `true` */
    hideOverflowingSegmentLabels?: boolean;
    /** Color accessor function for segments. Default: `undefined` */
    segmentColor?: ColorAccessor<NestedDonutSegment<Datum>>;
    /** Fill pattern accessor for segments. Resolves to a `FillPatternType`. Default: `undefined` */
    segmentPattern?: GenericAccessor<FillPatternType, NestedDonutSegment<Datum>>;
    /** Segment label accessor function. Default `undefined` */
    segmentLabel?: StringAccessor<NestedDonutSegment<Datum>>;
    /** Color accessor function for segment labels */
    segmentLabelColor?: ColorAccessor<NestedDonutSegment<Datum>>;
    /**
     * When true, the component will display empty segments (the ones that have `0` values) as tiny slices.
     * Default: `false`
    */
    showEmptySegments?: boolean;
    /** Show labels for individual segments. Default: `true` */
    showSegmentLabels?: boolean;
}
export declare const NestedDonutDefaultConfig: NestedDonutConfigInterface<unknown>;