angular2
Version:
Angular 2 - a web framework for modern web apps
108 lines • 12.2 kB
JavaScript
var __decorate = (this && this.__decorate) || function (decorators, target, key, desc) {
var c = arguments.length, r = c < 3 ? target : desc === null ? desc = Object.getOwnPropertyDescriptor(target, key) : desc, d;
if (typeof Reflect === "object" && typeof Reflect.decorate === "function") r = Reflect.decorate(decorators, target, key, desc);
else for (var i = decorators.length - 1; i >= 0; i--) if (d = decorators[i]) r = (c < 3 ? d(r) : c > 3 ? d(target, key, r) : d(target, key)) || r;
return c > 3 && r && Object.defineProperty(target, key, r), r;
};
var __metadata = (this && this.__metadata) || function (k, v) {
if (typeof Reflect === "object" && typeof Reflect.metadata === "function") return Reflect.metadata(k, v);
};
var __param = (this && this.__param) || function (paramIndex, decorator) {
return function (target, key) { decorator(target, key, paramIndex); }
};
import { Directive, Optional, Inject, Host, SkipSelf, forwardRef, Provider, Self } from 'angular2/core';
import { CONST_EXPR } from 'angular2/src/facade/lang';
import { ControlContainer } from './control_container';
import { controlPath, composeValidators, composeAsyncValidators } from './shared';
import { NG_VALIDATORS, NG_ASYNC_VALIDATORS } from '../validators';
const controlGroupProvider = CONST_EXPR(new Provider(ControlContainer, { useExisting: forwardRef(() => NgControlGroup) }));
/**
* Creates and binds a control group to a DOM element.
*
* This directive can only be used as a child of {@link NgForm} or {@link NgFormModel}.
*
* ### Example ([live demo](http://plnkr.co/edit/7EJ11uGeaggViYM6T5nq?p=preview))
*
* ```typescript
* @Component({
* selector: 'my-app',
* directives: [FORM_DIRECTIVES],
* })
* @View({
* template: `
* <div>
* <h2>Angular2 Control & ControlGroup Example</h2>
* <form #f="ngForm">
* <div ngControlGroup="name" #cg-name="form">
* <h3>Enter your name:</h3>
* <p>First: <input ngControl="first" required></p>
* <p>Middle: <input ngControl="middle"></p>
* <p>Last: <input ngControl="last" required></p>
* </div>
* <h3>Name value:</h3>
* <pre>{{valueOf(cgName)}}</pre>
* <p>Name is {{cgName?.control?.valid ? "valid" : "invalid"}}</p>
* <h3>What's your favorite food?</h3>
* <p><input ngControl="food"></p>
* <h3>Form value</h3>
* <pre>{{valueOf(f)}}</pre>
* </form>
* </div>
* `,
* directives: [FORM_DIRECTIVES]
* })
* export class App {
* valueOf(cg: NgControlGroup): string {
* if (cg.control == null) {
* return null;
* }
* return JSON.stringify(cg.control.value, null, 2);
* }
* }
* ```
*
* This example declares a control group for a user's name. The value and validation state of
* this group can be accessed separately from the overall form.
*/
export let NgControlGroup = class extends ControlContainer {
constructor(parent, _validators, _asyncValidators) {
super();
this._validators = _validators;
this._asyncValidators = _asyncValidators;
this._parent = parent;
}
ngOnInit() { this.formDirective.addControlGroup(this); }
ngOnDestroy() { this.formDirective.removeControlGroup(this); }
/**
* Get the {@link ControlGroup} backing this binding.
*/
get control() { return this.formDirective.getControlGroup(this); }
/**
* Get the path to this control group.
*/
get path() { return controlPath(this.name, this._parent); }
/**
* Get the {@link Form} to which this group belongs.
*/
get formDirective() { return this._parent.formDirective; }
get validator() { return composeValidators(this._validators); }
get asyncValidator() { return composeAsyncValidators(this._asyncValidators); }
};
NgControlGroup = __decorate([
Directive({
selector: '[ngControlGroup]',
providers: [controlGroupProvider],
inputs: ['name: ngControlGroup'],
exportAs: 'ngForm'
}),
__param(0, Host()),
__param(0, SkipSelf()),
__param(1, Optional()),
__param(1, Self()),
__param(1, Inject(NG_VALIDATORS)),
__param(2, Optional()),
__param(2, Self()),
__param(2, Inject(NG_ASYNC_VALIDATORS)),
__metadata('design:paramtypes', [ControlContainer, Array, Array])
], NgControlGroup);
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