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 } from 'angular2/src/core/metadata';
import { forwardRef, Provider, Inject, Optional } from 'angular2/src/core/di';
import { NG_VALUE_ACCESSOR } from './control_value_accessor';
import { NgControl } from './ng_control';
import { Control } from '../model';
import { NG_VALIDATORS, NG_ASYNC_VALIDATORS } from '../validators';
import { setUpControl, isPropertyUpdated, selectValueAccessor, composeValidators, composeAsyncValidators } from './shared';
const formControlBinding = CONST_EXPR(new Provider(NgControl, { useExisting: forwardRef(() => NgModel) }));
/**
* Binds a domain model to a form control.
*
*##Usage
*
* `ng-model` binds an existing domain model to a form control. For a
* two-way binding, use `[(ng-model)]` to ensure the model updates in
* both directions.
*
* ### Example ([live demo](http://plnkr.co/edit/R3UX5qDaUqFO2VYR0UzH?p=preview))
* ```typescript
* @Component({
* selector: "search-comp",
* directives: [FORM_DIRECTIVES],
* template: `<input type='text' [(ng-model)]="searchQuery">`
* })
* class SearchComp {
* searchQuery: string;
* }
* ```
*/
export let NgModel = class extends NgControl {
constructor(_validators, _asyncValidators, valueAccessors) {
super();
this._validators = _validators;
this._asyncValidators = _asyncValidators;
/** @internal */
this._control = new Control();
/** @internal */
this._added = false;
this.update = new EventEmitter();
this.valueAccessor = selectValueAccessor(this, valueAccessors);
}
onChanges(changes) {
if (!this._added) {
setUpControl(this._control, this);
this._control.updateValueAndValidity({ emitEvent: false });
this._added = true;
}
if (isPropertyUpdated(changes, this.viewModel)) {
this._control.updateValue(this.model);
this.viewModel = this.model;
}
}
get control() { return this._control; }
get path() { return []; }
get validator() { return composeValidators(this._validators); }
get asyncValidator() { return composeAsyncValidators(this._asyncValidators); }
viewToModelUpdate(newValue) {
this.viewModel = newValue;
ObservableWrapper.callNext(this.update, newValue);
}
};
NgModel = __decorate([
Directive({
selector: '[ng-model]:not([ng-control]):not([ng-form-control])',
bindings: [formControlBinding],
inputs: ['model: ngModel'],
outputs: ['update: ngModelChange'],
exportAs: 'form'
}),
__param(0, Optional()),
__param(0, Inject(NG_VALIDATORS)),
__param(1, Optional()),
__param(1, Inject(NG_ASYNC_VALIDATORS)),
__param(2, Optional()),
__param(2, Inject(NG_VALUE_ACCESSOR)),
__metadata('design:paramtypes', [Array, Array, Array])
], NgModel);
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