import { AfterViewInit, ElementRef, OnDestroy, Renderer2 } from "@angular/core";
import { ControlValueAccessor } from "@angular/forms";
import * as i0 from "@angular/core";
export declare class ContenteditableValueAccessorDirective implements ControlValueAccessor, AfterViewInit, OnDestroy {
    private readonly elementRef;
    private readonly renderer;
    private observer;
    /**
     * onTouch callback that marks control as touched and allows FormHooks use
     */
    private onTouched;
    /**
     * onChange callback that writes value to control and allows FormHooks use
     */
    private onChange;
    constructor(elementRef: ElementRef, renderer: Renderer2);
    /**
     * To support IE11 MutationObserver is used to monitor changes to the content
     */
    ngAfterViewInit(): void;
    /**
     * Disconnect MutationObserver IE11 fallback on destroy
     */
    ngOnDestroy(): void;
    /**
     * Listen to input events to write innerHTML value into control,
     * also disconnect MutationObserver as it is not needed if this
     * event works in current browser
     */
    onInput(): void;
    /**
     * Listen to blur event to mark control as touched
     */
    onBlur(): void;
    /**
     * Reacts to external change
     *
     * @see {@link ControlValueAccessor#writeValue}
     */
    writeValue(value: string | null): void;
    /**
     * Registers onChange callback
     *
     * @see {@link ControlValueAccessor#registerOnChange}
     */
    registerOnChange(onChange: (value: string) => void): void;
    /**
     * Registers onTouch callback
     *
     * @see {@link ControlValueAccessor#registerOnTouched}
     */
    registerOnTouched(onTouched: () => void): void;
    /**
     * Sets disabled state by setting contenteditable attribute to true/false
     *
     * @see {@link ControlValueAccessor#setDisabledState}
     */
    setDisabledState(disabled: boolean): void;
    /**
     * null is treated as empty string to prevent IE11 outputting 'null',
     * also single <br> is replaced with empty string when passed to the control
     */
    private static processValue;
    static ɵfac: i0.ɵɵFactoryDeclaration<ContenteditableValueAccessorDirective, never>;
    static ɵdir: i0.ɵɵDirectiveDeclaration<ContenteditableValueAccessorDirective, "[contenteditable][formControlName], [contenteditable][formControl], [contenteditable][ngModel]", never, {}, {}, never, never, false, never, false>;
}