import { DoCheck, ElementRef, OnDestroy, OnInit } from '@angular/core';
import { MatFormFieldControl } from '@angular/material/form-field';
import { ControlValueAccessor, FormBuilder, FormControl, FormGroup, FormGroupDirective, NgControl, NgForm, ValidatorFn } from '@angular/forms';
import { Subject } from 'rxjs';
import { FocusMonitor } from '@angular/cdk/a11y';
import { CanUpdateErrorState, CanUpdateErrorStateCtor, ErrorStateMatcher } from '@angular/material/core';
/**
 * Represents an interval consisting.
 */
export declare class Interval {
    start: number;
    end: number;
    /**
     * @param start interval's start.
     * @param end interval's end.
     */
    constructor(start: number, end: number);
}
/** Error when invalid control is dirty, touched, or submitted. */
export declare class IntervalInputErrorStateMatcher implements ErrorStateMatcher {
    isErrorState(control: FormControl | null, form: FormGroupDirective | NgForm | null): boolean;
}
/** Interval must have a start and end of the same type, either both numbers or both null */
export declare function startEndSameTypeValidator(otherInterval: FormControl): ValidatorFn;
declare class MatInputBase {
    _defaultErrorStateMatcher: ErrorStateMatcher;
    _parentForm: NgForm;
    _parentFormGroup: FormGroupDirective;
    ngControl: NgControl;
    constructor(_defaultErrorStateMatcher: ErrorStateMatcher, _parentForm: NgForm, _parentFormGroup: FormGroupDirective, ngControl: NgControl);
}
declare const _MatInputMixinBase: CanUpdateErrorStateCtor & typeof MatInputBase;
export declare class IntervalInputComponent extends _MatInputMixinBase implements ControlValueAccessor, MatFormFieldControl<Interval>, DoCheck, CanUpdateErrorState, OnDestroy, OnInit {
    ngControl: NgControl;
    private _fm;
    private _elRef;
    static nextId: number;
    form: FormGroup;
    stateChanges: Subject<void>;
    id: string;
    focused: boolean;
    errorState: boolean;
    controlType: string;
    matcher: IntervalInputErrorStateMatcher;
    startIntervalControl: FormControl;
    endIntervalControl: FormControl;
    intervalStartLabel: string;
    intervalEndLabel: string;
    valueRequiredValidator: boolean;
    onChange: (_: any) => void;
    onTouched: () => void;
    get empty(): boolean;
    get shouldLabelFloat(): boolean;
    get required(): boolean;
    set required(req: boolean);
    private _required;
    get disabled(): boolean;
    set disabled(value: boolean);
    private _disabled;
    get placeholder(): string;
    set placeholder(plh: string);
    private _placeholder;
    describedBy: string;
    setDescribedByIds(ids: string[]): void;
    get value(): Interval | null;
    set value(interval: Interval | null);
    errorStateMatcher: ErrorStateMatcher;
    constructor(fb: FormBuilder, ngControl: NgControl, _fm: FocusMonitor, _elRef: ElementRef<HTMLElement>, _parentForm: NgForm, _parentFormGroup: FormGroupDirective, _defaultErrorStateMatcher: ErrorStateMatcher);
    ngOnInit(): void;
    ngDoCheck(): void;
    ngOnDestroy(): void;
    onContainerClick(event: MouseEvent): void;
    writeValue(interval: Interval | null): void;
    registerOnChange(fn: any): void;
    registerOnTouched(fn: any): void;
    setDisabledState(isDisabled: boolean): void;
    _handleInput(): void;
}
export {};