/** * @license * Copyright Google LLC All Rights Reserved. * * Use of this source code is governed by an MIT-style license that can be * found in the LICENSE file at https://angular.io/license */ import { ɵgetDOM as getDOM } from '@angular/common'; import { Directive, ElementRef, forwardRef, Inject, InjectionToken, Optional, Renderer2 } from '@angular/core'; import { BaseControlValueAccessor, NG_VALUE_ACCESSOR } from './control_value_accessor'; import * as i0 from "@angular/core"; export const DEFAULT_VALUE_ACCESSOR = { provide: NG_VALUE_ACCESSOR, useExisting: forwardRef(() => DefaultValueAccessor), multi: true }; /** * We must check whether the agent is Android because composition events * behave differently between iOS and Android. */ function _isAndroid() { const userAgent = getDOM() ? getDOM().getUserAgent() : ''; return /android (\d+)/.test(userAgent.toLowerCase()); } /** * @description * Provide this token to control if form directives buffer IME input until * the "compositionend" event occurs. * @publicApi */ export const COMPOSITION_BUFFER_MODE = new InjectionToken('CompositionEventMode'); /** * The default `ControlValueAccessor` for writing a value and listening to changes on input * elements. The accessor is used by the `FormControlDirective`, `FormControlName`, and * `NgModel` directives. * * {@searchKeywords ngDefaultControl} * * @usageNotes * * ### Using the default value accessor * * The following example shows how to use an input element that activates the default value accessor * (in this case, a text field). * * ```ts * const firstNameControl = new FormControl(); * ``` * * ``` * * ``` * * This value accessor is used by default for `` and `