import { AriaDescriber } from '@angular/cdk/a11y';
import { AfterViewInit, OnDestroy, OnInit } from '@angular/core';
import { RealsoftSortDefaultOptions, RealsoftSortDirection, RealsoftSortHeaderArrowPosition, RealsoftSortHeaderColumnDef } from './models';
import { RealsoftSort } from './sort';
import * as i0 from "@angular/core";
export declare class RealsoftSortHeader implements OnInit, OnDestroy, AfterViewInit {
    _sort: RealsoftSort;
    _columnDef: RealsoftSortHeaderColumnDef;
    private _changeDetectorRef;
    private _focusMonitor;
    private _elementRef;
    private _sortActionDescription;
    private _changes;
    id: string;
    arrowPosition: RealsoftSortHeaderArrowPosition;
    start: RealsoftSortDirection;
    disabled: boolean;
    _previouslySorted: import("@angular/core").WritableSignal<RealsoftSortDirection>;
    _sortButton: HTMLElement;
    _defaultOptions: RealsoftSortDefaultOptions;
    _ariaDescriber: AriaDescriber;
    updateSortActionDescription(description: string): void;
    get sortActionDescription(): string;
    set sortActionDescription(value: string);
    disableClear: boolean;
    constructor();
    ngOnInit(): void;
    ngAfterViewInit(): void;
    currentlySorted(): boolean;
    currentlyDisabled(): boolean;
    ariaSortAttribute(): "none" | "ascending" | "descending";
    renderArrow(): boolean;
    sortOnClick(): void;
    handleKeydown(event: KeyboardEvent): void;
    ngOnDestroy(): void;
    static ɵfac: i0.ɵɵFactoryDeclaration<RealsoftSortHeader, never>;
    static ɵcmp: i0.ɵɵComponentDeclaration<RealsoftSortHeader, "[realsoft-sort-header]", ["realsoftSortHeader"], { "id": { "alias": "realsoft-sort-header"; "required": false; }; "arrowPosition": { "alias": "arrowPosition"; "required": false; }; "start": { "alias": "start"; "required": false; }; "disabled": { "alias": "disabled"; "required": false; }; "sortActionDescription": { "alias": "sortActionDescription"; "required": false; }; "disableClear": { "alias": "disableClear"; "required": false; }; }, {}, never, ["*"], true, never>;
    static ngAcceptInputType_disabled: unknown;
    static ngAcceptInputType_disableClear: unknown;
}