6f4ee6101c
This lets us skip src/facade/exception* when compiling modules other than core. It prevents having many conflicting declarations
81 lines
2.6 KiB
TypeScript
81 lines
2.6 KiB
TypeScript
/**
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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 {BaseException, Directive, Host, Inject, Input, OnDestroy, OnInit, Optional, Self, SkipSelf, forwardRef} from '@angular/core';
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import {NG_ASYNC_VALIDATORS, NG_VALIDATORS} from '../validators';
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import {AbstractFormGroupDirective} from './abstract_form_group_directive';
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import {ControlContainer} from './control_container';
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import {NgForm} from './ng_form';
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import {TemplateDrivenErrors} from './template_driven_errors';
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export const modelGroupProvider: any = {
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provide: ControlContainer,
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useExisting: forwardRef(() => NgModelGroup)
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};
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/**
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* Creates and binds a model group to a DOM element.
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*
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* This directive can only be used as a child of {@link NgForm}.
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*
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* ```typescript
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* @Component({
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* selector: 'my-app',
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* template: `
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* <div>
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* <h2>Angular forms Example</h2>
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* <form #f="ngForm">
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* <div ngModelGroup="name" #mgName="ngModelGroup">
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* <h3>Enter your name:</h3>
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* <p>First: <input name="first" ngModel required></p>
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* <p>Middle: <input name="middle" ngModel></p>
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* <p>Last: <input name="last" ngModel required></p>
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* </div>
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* <h3>Name value:</h3>
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* <pre>{{ mgName | json }}</pre>
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* <p>Name is {{mgName?.valid ? "valid" : "invalid"}}</p>
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* <h3>What's your favorite food?</h3>
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* <p><input name="food" ngModel></p>
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* <h3>Form value</h3>
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* <pre>{{ f | json }}</pre>
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* </form>
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* </div>
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* `
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* })
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* export class App {}
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* ```
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*
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* This example declares a model group for a user's name. The value and validation state of
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* this group can be accessed separately from the overall form.
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*
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* @experimental
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*/
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@Directive({selector: '[ngModelGroup]', providers: [modelGroupProvider], exportAs: 'ngModelGroup'})
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export class NgModelGroup extends AbstractFormGroupDirective implements OnInit, OnDestroy {
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@Input('ngModelGroup') name: string;
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constructor(
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@Host() @SkipSelf() parent: ControlContainer,
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@Optional() @Self() @Inject(NG_VALIDATORS) validators: any[],
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@Optional() @Self() @Inject(NG_ASYNC_VALIDATORS) asyncValidators: any[]) {
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super();
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this._parent = parent;
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this._validators = validators;
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this._asyncValidators = asyncValidators;
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}
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/** @internal */
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_checkParentType(): void {
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if (!(this._parent instanceof NgModelGroup) && !(this._parent instanceof NgForm)) {
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TemplateDrivenErrors.modelGroupParentException();
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}
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}
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}
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