import { ChangeDetectorRef, ElementRef, EventEmitter, OnDestroy, OnInit, QueryList } from "@angular/core";
import { ControlValueAccessor } from "@angular/forms";
import { NDropdownDirective, NDropdownMenuComponent } from "../dropdown/public_exports";
import { IControlWithErrors, NControlsValidationErrors, NInputErrorMessages, NOptionComponent } from "../public_components";
import { ErrorMessagesFactory } from "../../services/error-messages-factory.service";
import { BehaviorSubject } from "rxjs";
export declare class NSelectComponent implements ControlValueAccessor, OnInit, IControlWithErrors, OnDestroy {
    private el;
    private messageFactory;
    private cd;
    placeholder: string;
    isDisabled: boolean;
    trackBy: string;
    renderInHost: boolean;
    menu: NDropdownMenuComponent;
    selectButton: ElementRef;
    dropdown: NDropdownDirective;
    opened: EventEmitter<any>;
    selectedOptionId$: BehaviorSubject<any>;
    selectedOption$: BehaviorSubject<NOptionComponent>;
    optionChanged$: BehaviorSubject<NOptionComponent[]>;
    /**
     * Custom error message for input
     */
    errorMessages: NInputErrorMessages;
    required: boolean;
    errorMessage: string;
    isSelectActive: boolean;
    switcher: boolean;
    private filtering$;
    private propagateChange;
    private touchedFn;
    private isDestroyed;
    private subscribes;
    constructor(el: ElementRef, messageFactory: ErrorMessagesFactory, cd: ChangeDetectorRef, wide: string | null, switcher: string | null, fitWidth: string | null);
    private _optionComps;
    get optionComps(): QueryList<NOptionComponent>;
    set optionComps(queryList: QueryList<NOptionComponent>);
    setErrors(errors: NControlsValidationErrors): void;
    onSelectButtonClick(e: any): boolean;
    ngOnInit(): void;
    optionIdentity(index: number, item: NOptionComponent): any;
    selectOption(option: NOptionComponent): void;
    onTouched(): void;
    ngOnDestroy(): void;
    writeValue(val: any): void;
    registerOnChange(fn: any): void;
    registerOnTouched(fn: any): void;
    setDisabledState(isDisabled: boolean): void;
    onKeyDown(e: KeyboardEvent): void;
    onMenuOpened(): void;
    onMenuClosed(): void;
    subscribeOnOptionChanges(): void;
    unsubscribeFromOptionChanges(): void;
    private processErrors;
    private selectNextOption;
    private selectLastOption;
    private selectPrevOption;
    private selectFirstOption;
    private selectFocused;
    private focusOrSelect;
    private focusToCurrent;
}