import { EventEmitter, OnChanges, OnDestroy, OnInit, SimpleChanges, TemplateRef } from '@angular/core';
import { ColumnSortingIndicatorContext, ColumnSortingOrder, ColumnSortingState } from './column-sorting.directive';
import * as i0 from "@angular/core";
export declare class ColumnSortingComponent implements OnInit, OnChanges, OnDestroy {
    private readonly _sorter;
    private readonly _changeDetector;
    /** Defines the sorting order of a column: `NoSort`, `Ascending` or `Descending`. */
    state: ColumnSortingState;
    /** Defines a unique identifier for the column that can be used when sorting. */
    key: string;
    /** Store the order of the sorting - used when multiple columns are being sorted at once */
    order: number;
    /** Determine if a column can have a `NoSort` state */
    allowNoSort: boolean;
    /** Specifies name of the ascending icon */
    ascendingIcon: string;
    /** Specifies name of the descending icon */
    descendingIcon: string;
    /**
     * Changes the state of the sorting on the column between `NoSort`, `Ascending` and `Descending`.
     * This returns an array of objects for each column being sorted containing `key: string` and `state: ColumnSortingState`.
     * State can be used to find the current sorting state of the column eg. `(state === ColumnSortingState.Ascending)`.
     * The `ColumnSortingOrder` interface has been provided for objects in the array.
     */
    stateChange: EventEmitter<ColumnSortingState>;
    /** Emit whenever the order changes */
    orderChange: EventEmitter<number>;
    /** Expose the sorting state enum to the view */
    ColumnSortingState: typeof ColumnSortingState;
    /** Access the custom sort indicator if one was provided */
    get _sortIndicator(): TemplateRef<ColumnSortingIndicatorContext>;
    /** Unsubscribe from all observables on component destroy */
    private readonly _onDestroy$;
    ngOnInit(): void;
    ngOnChanges(changes: SimpleChanges): void;
    ngOnDestroy(): void;
    /** Toggle the sorting state of a column - this is designed to be programmatically called by the consuming component */
    changeState(): ColumnSortingOrder[];
    /** Update the state based on column order */
    private updateState;
    static ɵfac: i0.ɵɵFactoryDeclaration<ColumnSortingComponent, never>;
    static ɵcmp: i0.ɵɵComponentDeclaration<ColumnSortingComponent, "ux-column-sorting", ["ux-column-sorting"], { "state": { "alias": "state"; "required": false; }; "key": { "alias": "key"; "required": false; }; "order": { "alias": "order"; "required": false; }; "allowNoSort": { "alias": "allowNoSort"; "required": false; }; "ascendingIcon": { "alias": "ascendingIcon"; "required": false; }; "descendingIcon": { "alias": "descendingIcon"; "required": false; }; }, { "stateChange": "stateChange"; "orderChange": "orderChange"; }, never, never, false, never>;
}