import { FormGroupDirective, NgControl } from '@angular/forms';
import { Subject } from 'rxjs';
import { ErrorStateMatcher } from '@angular/material/core';
import { MatFormFieldControl } from '@angular/material/form-field';
import { AbstractControlValueAccessor } from './abstract-control-value-accessor';
import * as i0 from "@angular/core";
export declare abstract class AbstractMatFormFieldControl<T> extends AbstractControlValueAccessor<T> implements MatFormFieldControl<T | undefined> {
    readonly errorStateMatcher: ErrorStateMatcher;
    readonly ngControl: NgControl | null;
    readonly parentFormGroup: FormGroupDirective | null;
    static nextId: number;
    private $placeholder;
    private destroyed$;
    focused: boolean;
    constructor();
    stateChanges: Subject<void>;
    id: string;
    describedBy: string;
    get value(): T | undefined;
    set value(value: T | undefined);
    protected onControlValueChange(value: T | undefined): void;
    get empty(): boolean;
    get autofilled(): boolean;
    get userAriaDescribedBy(): undefined;
    get disableAutomaticLabeling(): undefined;
    onContainerClick(event: MouseEvent): void;
    get shouldLabelFloat(): boolean;
    get placeholder(): string;
    set placeholder(plh: string);
    get required(): any;
    set required(value: any);
    get disabled(): boolean;
    set disabled(value: boolean);
    get errorState(): boolean;
    get controlType(): string;
    setDescribedByIds(ids: string[]): void;
    ngOnInit(): void;
    ngOnDestroy(): void;
    writeValue(obj: any): void;
    static ɵfac: i0.ɵɵFactoryDeclaration<AbstractMatFormFieldControl<any>, never>;
    static ɵcmp: i0.ɵɵComponentDeclaration<AbstractMatFormFieldControl<any>, "ng-component", never, { "placeholder": { "alias": "placeholder"; "required": false; }; "required": { "alias": "required"; "required": false; }; "disabled": { "alias": "disabled"; "required": false; }; }, {}, never, never, true, never>;
}