import { AfterViewInit, ChangeDetectorRef, ElementRef, OnDestroy, QueryList } from '@angular/core';
import { ControlValueAccessor } from '@angular/forms';
import { CustomLabelDirective } from '../custom-label/custom-label.directive';
import { FormItemComponent } from '../form-item/form-item.component';
import { ListDeprecatedComponent } from '../list-deprecated/list-deprecated.component';
import { ListItemDeprecatedComponent } from '../list-item-deprecated/list-item-deprecated.component';
import { SelectCustomLabelContext } from './select-custom-label-context.model';
import * as i0 from "@angular/core";
export declare class SelectComponent extends FormItemComponent implements AfterViewInit, ControlValueAccessor, OnDestroy {
    private readonly element;
    private readonly cdr;
    private document;
    private static readonly ESCAPE_CODE;
    private static readonly ENTER_CODE;
    private static readonly UP_CODE;
    private static readonly DOWN_CODE;
    private static readonly ALPHA_NUMERIC_REGEX;
    /**
     * @ignore
     */
    private _onChange;
    /**
     * @ignore
     */
    private _onTouched;
    /**
     * Notifier used to stop items click event subscription.
     * @ignore
     */
    private unsubscribe;
    private childOptionsChange;
    /**
     * @ignore
     */
    isOpen: boolean;
    /**
     * @ignore
     */
    selectedValue: string | null;
    /**
     * @ignore
     */
    selectedIndex: number;
    iconName: string;
    /**
     * Label used for accessibility related attributes on button and list.
     * Should be the same value (text only) as the `<label>` element
     */
    fieldLabel?: string;
    label?: string;
    /**
     * Instructions on how to navigate the list. It is append after the input label.
     * @example "Use up and down arrows and Enter to select a value"
     */
    listNavigationLabel?: string;
    /**
     * Button default label when no value is selected. It is append after the input label.
     * @example "Select a value"
     */
    buttonDefaultValueLabel?: string;
    /**
     * Trigger button to toggle the list
     * @ignore
     */
    buttonEl?: ElementRef<HTMLButtonElement>;
    protected customLabelEl?: ElementRef<HTMLElement>;
    /**
     * List containing options
     * @ignore
     */
    listEl?: ListDeprecatedComponent;
    /**
     * Label to display instead of raw text value
     * @ignore
     * @example
     * <ng-template njCustomLabel let-value let-index="index">
     *  Value: {{value}} - Index: {{index}}
     * </ng-template>
     *
     * @example
     * <span *njCustomLabel="let value;let index=index">
     *  Value: {{value}} - Index: {{index}}
     * </span>
     */
    protected customLabel?: CustomLabelDirective<SelectCustomLabelContext>;
    /**
     * Option items
     * @ignore
     */
    selectOptions?: QueryList<ListItemDeprecatedComponent>;
    constructor(element: ElementRef<HTMLElement>, cdr: ChangeDetectorRef, document: Document);
    ngAfterViewInit(): void;
    ngOnDestroy(): void;
    private setInputsAndListenersOnOptions;
    /**
     * @ignore
     */
    getAdditionalClass(): string;
    protected getSubscriptId(): string;
    protected getInstructionsId(): string;
    protected getDescriptionId(): string;
    /**
     * Get index of the selected value
     */
    private indexForValue;
    private openList;
    private closeList;
    protected toggleIsOpen(): void;
    /**
     * Index of the currently focused option.
     */
    private get focusedIndex();
    private set focusedIndex(value);
    protected handleListKeydown(e: KeyboardEvent): void;
    protected handleFocusout(e: FocusEvent): void;
    /**
     * Implemented as part of ControlValueAccessor.
     * @ignore
     */
    registerOnChange(fn: any): void;
    /**
     * Implemented as part of ControlValueAccessor.
     * @ignore
     */
    registerOnTouched(fn: any): void;
    /**
     * Implemented as part of ControlValueAccessor.
     * @ignore
     */
    setDisabledState(isDisabled: boolean): void;
    /**
     * Implemented as part of ControlValueAccessor.
     * @ignore
     */
    writeValue(value: string): void;
    protected get customLabelContext(): SelectCustomLabelContext;
    /**
     * Label (≠ value) of selected option
     * @ignore
     */
    get selectedLabel(): string;
    /**
     * Aria-label for the trigger button element.
     * @ignore
     */
    get buttonLabel(): string;
    static ɵfac: i0.ɵɵFactoryDeclaration<SelectComponent, never>;
    static ɵcmp: i0.ɵɵComponentDeclaration<SelectComponent, "nj-select", never, { "iconName": { "alias": "iconName"; "required": false; }; "fieldLabel": { "alias": "fieldLabel"; "required": false; }; "label": { "alias": "label"; "required": false; }; "listNavigationLabel": { "alias": "listNavigationLabel"; "required": false; }; "buttonDefaultValueLabel": { "alias": "buttonDefaultValueLabel"; "required": false; }; }, {}, ["customLabel", "selectOptions"], ["[njFormLabel]", "[njFormSubscript]", "[njSelectOptions]"], true, never>;
}