import { BehaviorSubject } from 'rxjs';
import { Ring } from '../../chain.class';
import { AbstractTable } from './table.class';
import { Col } from '../../cols/col.class';
import { SortState, SortScheme } from '../../../../utils/sorter.class';
export interface DefaultSort {
    colId: string;
    state: SortState;
}
export declare abstract class AbstractSorter<D extends object> implements Ring<D[]> {
    protected ctx: AbstractTable<D>;
    protected defaults: DefaultSort;
    input: BehaviorSubject<D[]>;
    output: BehaviorSubject<D[]>;
    readonly defaultChain: SortScheme<D>;
    protected lastChain: SortScheme<D>;
    constructor(ctx: AbstractTable<D>, defaults: DefaultSort);
    subscribe(): import("rxjs").Subscription;
    abstract sortByCol(col: Col<D>): void;
    abstract sortByDefault(): void;
    abstract sortByLast(): void;
    protected clearOtherStates(): void;
    protected getSortScheme(leader: Col<D>, state: SortState): SortScheme<D>;
    private getDefaultSortScheme;
}