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Angular 2 - a web framework for modern web apps

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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 { CONST_EXPR } from 'angular2/src/facade/lang'; import { StringMapWrapper } from 'angular2/src/facade/collection'; import { EventEmitter, ObservableWrapper } from 'angular2/src/facade/async'; import { Directive, forwardRef, Provider, Inject, Optional, Self } from 'angular2/core'; import { NgControl } from './ng_control'; import { NG_VALIDATORS, NG_ASYNC_VALIDATORS } from '../validators'; import { NG_VALUE_ACCESSOR } from './control_value_accessor'; import { setUpControl, composeValidators, composeAsyncValidators, isPropertyUpdated, selectValueAccessor } from './shared'; const formControlBinding = CONST_EXPR(new Provider(NgControl, { useExisting: forwardRef(() => NgFormControl) })); /** * Binds an existing {@link Control} to a DOM element. * * ### Example ([live demo](http://plnkr.co/edit/jcQlZ2tTh22BZZ2ucNAT?p=preview)) * * In this example, we bind the control to an input element. When the value of the input element * changes, the value of the control will reflect that change. Likewise, if the value of the * control changes, the input element reflects that change. * * ```typescript * @Component({ * selector: 'my-app', * template: ` * <div> * <h2>NgFormControl Example</h2> * <form> * <p>Element with existing control: <input type="text" * [ngFormControl]="loginControl"></p> * <p>Value of existing control: {{loginControl.value}}</p> * </form> * </div> * `, * directives: [CORE_DIRECTIVES, FORM_DIRECTIVES] * }) * export class App { * loginControl: Control = new Control(''); * } * ``` * * ### ngModel * * We can also use `ngModel` to bind a domain model to the form. * * ### Example ([live demo](http://plnkr.co/edit/yHMLuHO7DNgT8XvtjTDH?p=preview)) * * ```typescript * @Component({ * selector: "login-comp", * directives: [FORM_DIRECTIVES], * template: "<input type='text' [ngFormControl]='loginControl' [(ngModel)]='login'>" * }) * class LoginComp { * loginControl: Control = new Control(''); * login:string; * } * ``` */ export let NgFormControl = class NgFormControl extends NgControl { constructor(_validators, _asyncValidators, valueAccessors) { super(); this._validators = _validators; this._asyncValidators = _asyncValidators; this.update = new EventEmitter(); this.valueAccessor = selectValueAccessor(this, valueAccessors); } ngOnChanges(changes) { if (this._isControlChanged(changes)) { setUpControl(this.form, this); this.form.updateValueAndValidity({ emitEvent: false }); } if (isPropertyUpdated(changes, this.viewModel)) { this.form.updateValue(this.model); this.viewModel = this.model; } } get path() { return []; } get validator() { return composeValidators(this._validators); } get asyncValidator() { return composeAsyncValidators(this._asyncValidators); } get control() { return this.form; } viewToModelUpdate(newValue) { this.viewModel = newValue; ObservableWrapper.callEmit(this.update, newValue); } _isControlChanged(changes) { return StringMapWrapper.contains(changes, "form"); } }; NgFormControl = __decorate([ Directive({ selector: '[ngFormControl]', bindings: [formControlBinding], inputs: ['form: ngFormControl', 'model: ngModel'], outputs: ['update: ngModelChange'], exportAs: 'ngForm' }), __param(0, Optional()), __param(0, Self()), __param(0, Inject(NG_VALIDATORS)), __param(1, Optional()), __param(1, Self()), __param(1, Inject(NG_ASYNC_VALIDATORS)), __param(2, Optional()), __param(2, Self()), __param(2, Inject(NG_VALUE_ACCESSOR)), __metadata('design:paramtypes', [Array, Array, Array]) ], NgFormControl); 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When the value of the input element\n * changes, the value of the control will reflect that change. Likewise, if the value of the\n * control changes, the input element reflects that change.\n *\n *  ```typescript\n * @Component({\n *   selector: 'my-app',\n *   template: `\n *     <div>\n *       <h2>NgFormControl Example</h2>\n *       <form>\n *         <p>Element with existing control: <input type=\"text\"\n * [ngFormControl]=\"loginControl\"></p>\n *         <p>Value of existing control: {{loginControl.value}}</p>\n *       </form>\n *     </div>\n *   `,\n *   directives: [CORE_DIRECTIVES, FORM_DIRECTIVES]\n * })\n * export class App {\n *   loginControl: Control = new Control('');\n * }\n *  ```\n *\n * ### ngModel\n *\n * We can also use `ngModel` to bind a domain model to the form.\n *\n * ### Example ([live demo](http://plnkr.co/edit/yHMLuHO7DNgT8XvtjTDH?p=preview))\n *\n *  ```typescript\n * @Component({\n *      selector: \"login-comp\",\n *      directives: [FORM_DIRECTIVES],\n *      template: \"<input type='text' [ngFormControl]='loginControl' [(ngModel)]='login'>\"\n *      })\n * class LoginComp {\n *  loginControl: Control = new Control('');\n *  login:string;\n * }\n *  ```\n */\n@Directive({\n  selector: '[ngFormControl]',\n  bindings: [formControlBinding],\n  inputs: ['form: ngFormControl', 'model: ngModel'],\n  outputs: ['update: ngModelChange'],\n  exportAs: 'ngForm'\n})\nexport class NgFormControl extends NgControl implements OnChanges {\n  form: Control;\n  update = new EventEmitter();\n  model: any;\n  viewModel: any;\n\n  constructor(@Optional() @Self() @Inject(NG_VALIDATORS) private _validators:\n                  /* Array<Validator|Function> */ any[],\n              @Optional() @Self() @Inject(NG_ASYNC_VALIDATORS) private _asyncValidators:\n                  /* Array<Validator|Function> */ any[],\n              @Optional() @Self() @Inject(NG_VALUE_ACCESSOR)\n              valueAccessors: ControlValueAccessor[]) {\n    super();\n    this.valueAccessor = selectValueAccessor(this, valueAccessors);\n  }\n\n  ngOnChanges(changes: {[key: string]: SimpleChange}): void {\n    if (this._isControlChanged(changes)) {\n      setUpControl(this.form, this);\n      this.form.updateValueAndValidity({emitEvent: false});\n    }\n    if (isPropertyUpdated(changes, this.viewModel)) {\n      this.form.updateValue(this.model);\n      this.viewModel = this.model;\n    }\n  }\n\n  get path(): string[] { return []; }\n\n  get validator(): ValidatorFn { return composeValidators(this._validators); }\n\n  get asyncValidator(): AsyncValidatorFn { return composeAsyncValidators(this._asyncValidators); }\n\n  get control(): Control { return this.form; }\n\n  viewToModelUpdate(newValue: any): void {\n    this.viewModel = newValue;\n    ObservableWrapper.callEmit(this.update, newValue);\n  }\n\n  private _isControlChanged(changes: {[key: string]: any}): boolean {\n    return StringMapWrapper.contains(changes, \"form\");\n  }\n}\n"]}