angular2
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Angular 2 - a web framework for modern web apps
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JavaScript
var __decorate = (this && this.__decorate) || function (decorators, target, key, desc) {
if (typeof Reflect === "object" && typeof Reflect.decorate === "function") return Reflect.decorate(decorators, target, key, desc);
switch (arguments.length) {
case 2: return decorators.reduceRight(function(o, d) { return (d && d(o)) || o; }, target);
case 3: return decorators.reduceRight(function(o, d) { return (d && d(target, key)), void 0; }, void 0);
case 4: return decorators.reduceRight(function(o, d) { return (d && d(target, key, o)) || o; }, desc);
}
};
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 { CONST_EXPR } from 'angular2/src/facade/lang';
import { EventEmitter, ObservableWrapper } from 'angular2/src/facade/async';
import { Directive, forwardRef, Host, SkipSelf, Provider, Inject, Optional, Self } from 'angular2/core';
import { ControlContainer } from './control_container';
import { NgControl } from './ng_control';
import { NG_VALUE_ACCESSOR } from './control_value_accessor';
import { controlPath, composeValidators, composeAsyncValidators, isPropertyUpdated, selectValueAccessor } from './shared';
import { NG_VALIDATORS, NG_ASYNC_VALIDATORS } from '../validators';
const controlNameBinding = CONST_EXPR(new Provider(NgControl, { useExisting: forwardRef(() => NgControlName) }));
/**
* Creates and binds a control with a specified name to a DOM element.
*
* This directive can only be used as a child of {@link NgForm} or {@link NgFormModel}.
* ### Example
*
* In this example, we create the login and password controls.
* We can work with each control separately: check its validity, get its value, listen to its
* changes.
*
* ```
* @Component({
* selector: "login-comp",
* directives: [FORM_DIRECTIVES],
* template: `
* <form #f="form" (submit)='onLogIn(f.value)'>
* Login <input type='text' ng-control='login' #l="form">
* <div *ng-if="!l.valid">Login is invalid</div>
*
* Password <input type='password' ng-control='password'>
* <button type='submit'>Log in!</button>
* </form>
* `})
* class LoginComp {
* onLogIn(value): void {
* // value === {login: 'some login', password: 'some password'}
* }
* }
* ```
*
* We can also use ng-model to bind a domain model to the form.
*
* ```
* @Component({
* selector: "login-comp",
* directives: [FORM_DIRECTIVES],
* template: `
* <form (submit)='onLogIn()'>
* Login <input type='text' ng-control='login' [(ng-model)]="credentials.login">
* Password <input type='password' ng-control='password'
* [(ng-model)]="credentials.password">
* <button type='submit'>Log in!</button>
* </form>
* `})
* class LoginComp {
* credentials: {login:string, password:string};
*
* onLogIn(): void {
* // this.credentials.login === "some login"
* // this.credentials.password === "some password"
* }
* }
* ```
*/
export let NgControlName = class extends NgControl {
constructor(_parent, _validators, _asyncValidators, valueAccessors) {
super();
this._parent = _parent;
this._validators = _validators;
this._asyncValidators = _asyncValidators;
/** @internal */
this.update = new EventEmitter();
this._added = false;
this.valueAccessor = selectValueAccessor(this, valueAccessors);
}
ngOnChanges(changes) {
if (!this._added) {
this.formDirective.addControl(this);
this._added = true;
}
if (isPropertyUpdated(changes, this.viewModel)) {
this.viewModel = this.model;
this.formDirective.updateModel(this, this.model);
}
}
ngOnDestroy() { this.formDirective.removeControl(this); }
viewToModelUpdate(newValue) {
this.viewModel = newValue;
ObservableWrapper.callEmit(this.update, newValue);
}
get path() { return controlPath(this.name, this._parent); }
get formDirective() { return this._parent.formDirective; }
get validator() { return composeValidators(this._validators); }
get asyncValidator() { return composeAsyncValidators(this._asyncValidators); }
get control() { return this.formDirective.getControl(this); }
};
NgControlName = __decorate([
Directive({
selector: '[ng-control]',
bindings: [controlNameBinding],
inputs: ['name: ngControl', 'model: ngModel'],
outputs: ['update: ngModelChange'],
exportAs: 'form'
}),
__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)),
__param(3, Optional()),
__param(3, Self()),
__param(3, Inject(NG_VALUE_ACCESSOR)),
__metadata('design:paramtypes', [ControlContainer, Array, Array, Array])
], NgControlName);