import type { DataItem } from "../../core/render/Component";
import type { PercentSeries, IPercentSeriesDataItem } from "../../charts/percent/PercentSeries";
import type { Legend } from "../../core/render/Legend";
import { Button } from "../../core/render/Button";
import { Entity, IEntitySettings, IEntityPrivate, IEntityEvents } from "../../core/util/Entity";
export interface ISliceGrouperSettings extends IEntitySettings {
    /**
     * The series whose small slices are grouped.
     */
    series?: PercentSeries;
    /**
     * Legend to keep in step with the grouping: it gets an item for the group
     * slice, and the items of the grouped slices are hidden.
     */
    legend?: Legend;
    /**
     * Slices whose share of the total is at or below this percent are
     * grouped.
     *
     * @default 5
     */
    threshold?: number;
    /**
     * Keeps only this many first slices; the rest are grouped.
     */
    limit?: number;
    /**
     * Name (category) of the group slice.
     *
     * @default "Other"
     */
    groupName?: string;
    /**
     * What a click on the group slice does:
     *
     * * `"none"`: nothing.
     * * `"break"`: replaces the group slice with the small slices.
     * * `"zoom"`: shows only the small slices, hiding the others.
     *
     * @default "none"
     */
    clickBehavior?: "none" | "break" | "zoom";
}
export interface ISliceGrouperPrivate extends IEntityPrivate {
    groupDataItem?: DataItem<IPercentSeriesDataItem>;
    normalDataItems?: DataItem<IPercentSeriesDataItem>[];
    smallDataItems?: DataItem<IPercentSeriesDataItem>[];
    currentStep?: number;
    currentPass?: number;
    currentCount?: number;
}
export interface ISliceGrouperEvents extends IEntityEvents {
}
/**
 * A plugin that can be used to automatically group small slices on percent
 * charts into a single slice.
 *
 * @see {@link https://www.amcharts.com/docs/v5/charts/percent-charts/grouping-slices/} for more info
 */
export declare class SliceGrouper extends Entity {
    static className: string;
    static classNames: Array<string>;
    _settings: ISliceGrouperSettings;
    _privateSettings: ISliceGrouperPrivate;
    _events: ISliceGrouperEvents;
    /**
     * Button shown while the small slices are shown after a click on the
     * group slice; it groups them again. Made only when `clickBehavior` is not
     * `"none"`.
     */
    zoomOutButton?: Button;
    protected _afterNew(): void;
    private initZoomButton;
    private handleData;
    /**
     * Groups the small slices again, as a click on `zoomOutButton` does.
     */
    zoomOut(): void;
    private updateGroupDataItem;
    private handleClick;
    _beforeChanged(): void;
}
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