import { ChartData } from './ChartData';
import { Entry } from './Entry';
import { PieEntry } from './PieEntry';
import { PieDataSet } from './PieDataSet';
import { Highlight } from '../highlight/Highlight';
/**
 * A PieData object can only represent one DataSet. Unlike all other charts, the
 * legend labels of the PieChart are created from the x-values array, and not
 * from the DataSet labels. Each PieData object can only represent one
 * PieDataSet (multiple PieDataSets inside a single PieChart are not possible).
 *

 */
export declare class PieData extends ChartData<PieEntry, PieDataSet> {
    /**
     * Sets the PieDataSet this data object should represent.
     *
     * @param dataSet
     */
    setDataSet(dataSet: PieDataSet): void;
    /**
     * Returns the DataSet this PieData object represents. A PieData object can
     * only contain one DataSet.
     */
    getDataSet(): PieDataSet;
    /**
     * The PieData object can only have one DataSet. Use getDataSet() method instead.
     *
     * @param index
     * @return
     */
    getDataSetByIndex(index: any): PieDataSet;
    getDataSetByLabel(label: string, ignoreCase: any): PieDataSet;
    getEntryForHighlight(highlight: Highlight): Entry;
    /**
     * Returns the sum of all values in this PieData object.
     */
    getYValueSum(): number;
}