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/**
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* @license
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* Copyright Google Inc. All Rights Reserved.
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*
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* Use of this source code is governed by an MIT-style license that can be
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* found in the LICENSE file at https://angular.io/license
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*/
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import { ElementRef, Injector, OnDestroy, OnInit, Renderer2 } from '@angular/core';
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import { ControlValueAccessor } from './control_value_accessor';
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import { NgControl } from './ng_control';
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export declare const RADIO_VALUE_ACCESSOR: any;
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/**
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* Internal class used by Angular to uncheck radio buttons with the matching name.
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*/
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export declare class RadioControlRegistry {
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private _accessors;
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add(control: NgControl, accessor: RadioControlValueAccessor): void;
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remove(accessor: RadioControlValueAccessor): void;
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select(accessor: RadioControlValueAccessor): void;
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private _isSameGroup(controlPair, accessor);
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}
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/**
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* @whatItDoes Writes radio control values and listens to radio control changes.
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*
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* Used by {@link NgModel}, {@link FormControlDirective}, and {@link FormControlName}
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* to keep the view synced with the {@link FormControl} model.
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*
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* @howToUse
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*
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* If you have imported the {@link FormsModule} or the {@link ReactiveFormsModule}, this
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* value accessor will be active on any radio control that has a form directive. You do
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* **not** need to add a special selector to activate it.
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*
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* ### How to use radio buttons with form directives
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*
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* To use radio buttons in a template-driven form, you'll want to ensure that radio buttons
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* in the same group have the same `name` attribute. Radio buttons with different `name`
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* attributes do not affect each other.
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*
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* {@example forms/ts/radioButtons/radio_button_example.ts region='TemplateDriven'}
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*
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* When using radio buttons in a reactive form, radio buttons in the same group should have the
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* same `formControlName`. You can also add a `name` attribute, but it's optional.
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*
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* {@example forms/ts/reactiveRadioButtons/reactive_radio_button_example.ts region='Reactive'}
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*
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* * **npm package**: `@angular/forms`
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*
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* @stable
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*/
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export declare class RadioControlValueAccessor implements ControlValueAccessor, OnDestroy, OnInit {
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private _renderer;
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private _elementRef;
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private _registry;
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private _injector;
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onChange: () => void;
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onTouched: () => void;
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name: string;
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formControlName: string;
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value: any;
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constructor(_renderer: Renderer2, _elementRef: ElementRef, _registry: RadioControlRegistry, _injector: Injector);
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ngOnInit(): void;
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ngOnDestroy(): void;
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writeValue(value: any): void;
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registerOnChange(fn: (_: any) => {}): void;
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fireUncheck(value: any): void;
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registerOnTouched(fn: () => {}): void;
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setDisabledState(isDisabled: boolean): void;
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private _checkName();
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private _throwNameError();
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}
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