986 lines
27 KiB
HTML
986 lines
27 KiB
HTML
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<html lang="en"><head></head><body><form id="mainForm" method="post" action="http://plnkr.co/edit/?p=preview" target="_self"><input type="hidden" name="files[app/app.component.ts]" value="import { Component, Inject } from '@angular/core';
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import { APP_CONFIG, AppConfig } from './app.config';
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import { Logger } from './logger.service';
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import { UserService } from './user.service';
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@Component({
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selector: 'my-app',
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template: `
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<h1>{{title}}</h1>
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<my-car></my-car>
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<my-injectors></my-injectors>
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<my-tests></my-tests>
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<h2>User</h2>
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<p id="user">
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{{userInfo}}
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<button (click)="nextUser()">Next User</button>
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<p>
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<my-heroes id="authorized" *ngIf="isAuthorized"></my-heroes>
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<my-heroes id="unauthorized" *ngIf="!isAuthorized"></my-heroes>
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<my-providers></my-providers>
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`,
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providers: [Logger]
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})
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export class AppComponent {
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title: string;
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constructor(
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@Inject(APP_CONFIG) config: AppConfig,
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private userService: UserService) {
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this.title = config.title;
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}
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get isAuthorized() { return this.user.isAuthorized; }
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nextUser() { this.userService.getNewUser(); }
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get user() { return this.userService.user; }
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get userInfo() {
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return `Current user, ${this.user.name}, is ` +
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`${this.isAuthorized ? '' : 'not'} authorized. `;
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}
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}
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/*
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Copyright 2016 Google Inc. All Rights Reserved.
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Use of this source code is governed by an MIT-style license that
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can be found in the LICENSE file at http://angular.io/license
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*/"><input type="hidden" name="files[app/app.config.ts]" value="import { OpaqueToken } from '@angular/core';
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export let APP_CONFIG = new OpaqueToken('app.config');
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export interface AppConfig {
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apiEndpoint: string;
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title: string;
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}
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export const HERO_DI_CONFIG: AppConfig = {
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apiEndpoint: 'api.heroes.com',
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title: 'Dependency Injection'
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};
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/*
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Copyright 2016 Google Inc. All Rights Reserved.
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Use of this source code is governed by an MIT-style license that
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can be found in the LICENSE file at http://angular.io/license
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*/"><input type="hidden" name="files[app/app.module.ts]" value="import { NgModule } from '@angular/core';
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import { BrowserModule } from '@angular/platform-browser';
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import { AppComponent } from './app.component';
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import { CarComponent } from './car/car.component';
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import { HeroesComponent } from './heroes/heroes.component';
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import { HeroListComponent } from './heroes/hero-list.component';
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import { InjectorComponent } from './injector.component';
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import { TestComponent } from './test.component';
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import { APP_CONFIG, HERO_DI_CONFIG } from './app.config';
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import { UserService } from './user.service';
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import {
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ProvidersComponent,
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Provider1Component,
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Provider3Component,
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Provider4Component,
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Provider5Component,
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Provider6aComponent,
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Provider6bComponent,
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Provider7Component,
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Provider8Component,
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Provider9Component,
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Provider10Component,
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} from './providers.component';
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@NgModule({
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imports: [
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BrowserModule
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],
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declarations: [
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AppComponent,
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CarComponent,
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HeroesComponent,
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HeroListComponent,
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InjectorComponent,
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TestComponent,
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ProvidersComponent,
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Provider1Component,
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Provider3Component,
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Provider4Component,
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Provider5Component,
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Provider6aComponent,
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Provider6bComponent,
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Provider7Component,
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Provider8Component,
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Provider9Component,
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Provider10Component,
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],
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providers: [
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UserService,
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{ provide: APP_CONFIG, useValue: HERO_DI_CONFIG }
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],
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bootstrap: [ AppComponent ]
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})
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export class AppModule { }
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/*
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Copyright 2016 Google Inc. All Rights Reserved.
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Use of this source code is governed by an MIT-style license that
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can be found in the LICENSE file at http://angular.io/license
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*/"><input type="hidden" name="files[app/car/car-creations.ts]" value="// Examples with car and engine variations
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import { Car, Engine, Tires } from './car';
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///////// example 1 ////////////
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export function simpleCar() {
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// Simple car with 4 cylinders and Flintstone tires.
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let car = new Car(new Engine(), new Tires());
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car.description = 'Simple';
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return car;
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}
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///////// example 2 ////////////
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class Engine2 {
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constructor(public cylinders: number) { }
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}
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export function superCar() {
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// Super car with 12 cylinders and Flintstone tires.
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let bigCylinders = 12;
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let car = new Car(new Engine2(bigCylinders), new Tires());
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car.description = 'Super';
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return car;
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}
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/////////// example 3 //////////
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class MockEngine extends Engine { cylinders = 8; }
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class MockTires extends Tires { make = 'YokoGoodStone'; }
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export function testCar() {
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// Test car with 8 cylinders and YokoGoodStone tires.
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let car = new Car(new MockEngine(), new MockTires());
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car.description = 'Test';
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return car;
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}
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/*
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Copyright 2016 Google Inc. All Rights Reserved.
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Use of this source code is governed by an MIT-style license that
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can be found in the LICENSE file at http://angular.io/license
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*/"><input type="hidden" name="files[app/car/car-factory.ts]" value="import { Engine, Tires, Car } from './car';
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// BAD pattern!
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export class CarFactory {
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createCar() {
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let car = new Car(this.createEngine(), this.createTires());
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car.description = 'Factory';
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return car;
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}
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createEngine() {
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return new Engine();
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}
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createTires() {
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return new Tires();
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}
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}
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/*
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Copyright 2016 Google Inc. All Rights Reserved.
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Use of this source code is governed by an MIT-style license that
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can be found in the LICENSE file at http://angular.io/license
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*/"><input type="hidden" name="files[app/car/car-injector.ts]" value="import { ReflectiveInjector } from '@angular/core';
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import { Car, Engine, Tires } from './car';
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import { Logger } from '../logger.service';
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export function useInjector() {
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let injector: ReflectiveInjector;
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/*
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// Cannot instantiate an ReflectiveInjector like this!
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let injector = new ReflectiveInjector([Car, Engine, Tires]);
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*/
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injector = ReflectiveInjector.resolveAndCreate([Car, Engine, Tires]);
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let car = injector.get(Car);
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car.description = 'Injector';
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injector = ReflectiveInjector.resolveAndCreate([Logger]);
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let logger = injector.get(Logger);
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logger.log('Injector car.drive() said: ' + car.drive());
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return car;
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}
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/*
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Copyright 2016 Google Inc. All Rights Reserved.
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Use of this source code is governed by an MIT-style license that
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can be found in the LICENSE file at http://angular.io/license
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*/"><input type="hidden" name="files[app/car/car-no-di.ts]" value="// Car without DI
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import { Engine, Tires } from './car';
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export class Car {
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public engine: Engine;
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public tires: Tires;
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public description = 'No DI';
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constructor() {
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this.engine = new Engine();
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this.tires = new Tires();
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}
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// Method using the engine and tires
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drive() {
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return `${this.description} car with ` +
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`${this.engine.cylinders} cylinders and ${this.tires.make} tires.`;
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}
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}
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/*
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Copyright 2016 Google Inc. All Rights Reserved.
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Use of this source code is governed by an MIT-style license that
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|
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can be found in the LICENSE file at http://angular.io/license
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*/"><input type="hidden" name="files[app/car/car.component.ts]" value="import { Component } from '@angular/core';
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import { Car, Engine, Tires } from './car';
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import { Car as CarNoDi } from './car-no-di';
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import { CarFactory } from './car-factory';
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import { testCar,
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simpleCar,
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superCar } from './car-creations';
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import { useInjector } from './car-injector';
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@Component({
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selector: 'my-car',
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template: `
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<h2>Cars</h2>
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<div id="di">{{car.drive()}}</div>
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<div id="nodi">{{noDiCar.drive()}}</div>
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<div id="injector">{{injectorCar.drive()}}</div>
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<div id="factory">{{factoryCar.drive()}}</div>
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<div id="simple">{{simpleCar.drive()}}</div>
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<div id="super">{{superCar.drive()}}</div>
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<div id="test">{{testCar.drive()}}</div>
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`,
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providers: [Car, Engine, Tires]
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})
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export class CarComponent {
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factoryCar = (new CarFactory).createCar();
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injectorCar = useInjector();
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noDiCar = new CarNoDi;
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simpleCar = simpleCar();
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superCar = superCar();
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testCar = testCar();
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constructor(public car: Car) {}
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}
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/*
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Copyright 2016 Google Inc. All Rights Reserved.
|
||
|
|
Use of this source code is governed by an MIT-style license that
|
||
|
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can be found in the LICENSE file at http://angular.io/license
|
||
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*/"><input type="hidden" name="files[app/car/car.ts]" value="import { Injectable } from '@angular/core';
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export class Engine {
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public cylinders = 4;
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}
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export class Tires {
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public make = 'Flintstone';
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public model = 'Square';
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}
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@Injectable()
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export class Car {
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public description = 'DI';
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constructor(public engine: Engine, public tires: Tires) { }
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// Method using the engine and tires
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drive() {
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return `${this.description} car with ` +
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`${this.engine.cylinders} cylinders and ${this.tires.make} tires.`;
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}
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}
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|
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|
||
|
|
|
||
|
|
/*
|
||
|
|
Copyright 2016 Google Inc. All Rights Reserved.
|
||
|
|
Use of this source code is governed by an MIT-style license that
|
||
|
|
can be found in the LICENSE file at http://angular.io/license
|
||
|
|
*/"><input type="hidden" name="files[app/heroes/hero-list.component.ts]" value="/* tslint:disable:one-line */
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|
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import { Component } from '@angular/core';
|
||
|
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|
||
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import { Hero } from './hero';
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||
|
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import { HeroService } from './hero.service';
|
||
|
|
|
||
|
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@Component({
|
||
|
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selector: 'hero-list',
|
||
|
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template: `
|
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|
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<div *ngFor="let hero of heroes">
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{{hero.id}} - {{hero.name}}
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({{hero.isSecret ? 'secret' : 'public'}})
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</div>
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`,
|
||
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})
|
||
|
|
export class HeroListComponent {
|
||
|
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heroes: Hero[];
|
||
|
|
|
||
|
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constructor(heroService: HeroService)
|
||
|
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{
|
||
|
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this.heroes = heroService.getHeroes();
|
||
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}
|
||
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}
|
||
|
|
|
||
|
|
|
||
|
|
/*
|
||
|
|
Copyright 2016 Google Inc. All Rights Reserved.
|
||
|
|
Use of this source code is governed by an MIT-style license that
|
||
|
|
can be found in the LICENSE file at http://angular.io/license
|
||
|
|
*/"><input type="hidden" name="files[app/heroes/hero.service.provider.ts]" value="/* tslint:disable:one-line */
|
||
|
|
import { HeroService } from './hero.service';
|
||
|
|
import { Logger } from '../logger.service';
|
||
|
|
import { UserService } from '../user.service';
|
||
|
|
|
||
|
|
let heroServiceFactory = (logger: Logger, userService: UserService) => {
|
||
|
|
return new HeroService(logger, userService.user.isAuthorized);
|
||
|
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};
|
||
|
|
|
||
|
|
export let heroServiceProvider =
|
||
|
|
{ provide: HeroService,
|
||
|
|
useFactory: heroServiceFactory,
|
||
|
|
deps: [Logger, UserService]
|
||
|
|
};
|
||
|
|
|
||
|
|
|
||
|
|
/*
|
||
|
|
Copyright 2016 Google Inc. All Rights Reserved.
|
||
|
|
Use of this source code is governed by an MIT-style license that
|
||
|
|
can be found in the LICENSE file at http://angular.io/license
|
||
|
|
*/"><input type="hidden" name="files[app/heroes/hero.service.ts]" value="import { Injectable } from '@angular/core';
|
||
|
|
|
||
|
|
import { HEROES } from './mock-heroes';
|
||
|
|
import { Logger } from '../logger.service';
|
||
|
|
|
||
|
|
@Injectable()
|
||
|
|
export class HeroService {
|
||
|
|
constructor(
|
||
|
|
private logger: Logger,
|
||
|
|
private isAuthorized: boolean) { }
|
||
|
|
|
||
|
|
getHeroes() {
|
||
|
|
let auth = this.isAuthorized ? 'authorized ' : 'unauthorized';
|
||
|
|
this.logger.log(`Getting heroes for ${auth} user.`);
|
||
|
|
return HEROES.filter(hero => this.isAuthorized || !hero.isSecret);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
/*
|
||
|
|
Copyright 2016 Google Inc. All Rights Reserved.
|
||
|
|
Use of this source code is governed by an MIT-style license that
|
||
|
|
can be found in the LICENSE file at http://angular.io/license
|
||
|
|
*/"><input type="hidden" name="files[app/heroes/hero.ts]" value="export class Hero {
|
||
|
|
id: number;
|
||
|
|
name: string;
|
||
|
|
isSecret = false;
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
/*
|
||
|
|
Copyright 2016 Google Inc. All Rights Reserved.
|
||
|
|
Use of this source code is governed by an MIT-style license that
|
||
|
|
can be found in the LICENSE file at http://angular.io/license
|
||
|
|
*/"><input type="hidden" name="files[app/heroes/heroes.component.ts]" value="import { Component } from '@angular/core';
|
||
|
|
|
||
|
|
import { heroServiceProvider } from './hero.service.provider';
|
||
|
|
|
||
|
|
@Component({
|
||
|
|
selector: 'my-heroes',
|
||
|
|
template: `
|
||
|
|
<h2>Heroes</h2>
|
||
|
|
<hero-list></hero-list>
|
||
|
|
`,
|
||
|
|
providers: [heroServiceProvider]
|
||
|
|
})
|
||
|
|
export class HeroesComponent { }
|
||
|
|
|
||
|
|
|
||
|
|
/*
|
||
|
|
Copyright 2016 Google Inc. All Rights Reserved.
|
||
|
|
Use of this source code is governed by an MIT-style license that
|
||
|
|
can be found in the LICENSE file at http://angular.io/license
|
||
|
|
*/"><input type="hidden" name="files[app/heroes/mock-heroes.ts]" value="import { Hero } from './hero';
|
||
|
|
|
||
|
|
export var HEROES: Hero[] = [
|
||
|
|
{ id: 11, isSecret: false, name: 'Mr. Nice' },
|
||
|
|
{ id: 12, isSecret: false, name: 'Narco' },
|
||
|
|
{ id: 13, isSecret: false, name: 'Bombasto' },
|
||
|
|
{ id: 14, isSecret: false, name: 'Celeritas' },
|
||
|
|
{ id: 15, isSecret: false, name: 'Magneta' },
|
||
|
|
{ id: 16, isSecret: false, name: 'RubberMan' },
|
||
|
|
{ id: 17, isSecret: false, name: 'Dynama' },
|
||
|
|
{ id: 18, isSecret: true, name: 'Dr IQ' },
|
||
|
|
{ id: 19, isSecret: true, name: 'Magma' },
|
||
|
|
{ id: 20, isSecret: true, name: 'Tornado' }
|
||
|
|
];
|
||
|
|
|
||
|
|
|
||
|
|
/*
|
||
|
|
Copyright 2016 Google Inc. All Rights Reserved.
|
||
|
|
Use of this source code is governed by an MIT-style license that
|
||
|
|
can be found in the LICENSE file at http://angular.io/license
|
||
|
|
*/"><input type="hidden" name="files[app/injector.component.ts]" value="import { Component, Injector } from '@angular/core';
|
||
|
|
|
||
|
|
import { Car, Engine, Tires } from './car/car';
|
||
|
|
import { Hero } from './heroes/hero';
|
||
|
|
import { HeroService } from './heroes/hero.service';
|
||
|
|
import { heroServiceProvider } from './heroes/hero.service.provider';
|
||
|
|
import { Logger } from './logger.service';
|
||
|
|
|
||
|
|
@Component({
|
||
|
|
selector: 'my-injectors',
|
||
|
|
template: `
|
||
|
|
<h2>Other Injections</h2>
|
||
|
|
<div id="car">{{car.drive()}}</div>
|
||
|
|
<div id="hero">{{hero.name}}</div>
|
||
|
|
<div id="rodent">{{rodent}}</div>
|
||
|
|
`,
|
||
|
|
providers: [Car, Engine, Tires, heroServiceProvider, Logger]
|
||
|
|
})
|
||
|
|
export class InjectorComponent {
|
||
|
|
car: Car = this.injector.get(Car);
|
||
|
|
|
||
|
|
heroService: HeroService = this.injector.get(HeroService);
|
||
|
|
hero: Hero = this.heroService.getHeroes()[0];
|
||
|
|
|
||
|
|
constructor(private injector: Injector) { }
|
||
|
|
|
||
|
|
get rodent() {
|
||
|
|
let rousDontExist = `R.O.U.S.'s? I don't think they exist!`;
|
||
|
|
return this.injector.get(ROUS, rousDontExist);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* R.O.U.S. - Rodents Of Unusual Size
|
||
|
|
* // https://www.youtube.com/watch?v=BOv5ZjAOpC8
|
||
|
|
*/
|
||
|
|
class ROUS { }
|
||
|
|
|
||
|
|
|
||
|
|
/*
|
||
|
|
Copyright 2016 Google Inc. All Rights Reserved.
|
||
|
|
Use of this source code is governed by an MIT-style license that
|
||
|
|
can be found in the LICENSE file at http://angular.io/license
|
||
|
|
*/"><input type="hidden" name="files[app/logger.service.ts]" value="import { Injectable } from '@angular/core';
|
||
|
|
|
||
|
|
@Injectable()
|
||
|
|
export class Logger {
|
||
|
|
logs: string[] = []; // capture logs for testing
|
||
|
|
|
||
|
|
log(message: string) {
|
||
|
|
this.logs.push(message);
|
||
|
|
console.log(message);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
/*
|
||
|
|
Copyright 2016 Google Inc. All Rights Reserved.
|
||
|
|
Use of this source code is governed by an MIT-style license that
|
||
|
|
can be found in the LICENSE file at http://angular.io/license
|
||
|
|
*/"><input type="hidden" name="files[app/providers.component.ts]" value="/* tslint:disable:one-line:check-open-brace*/
|
||
|
|
// Examples of provider arrays
|
||
|
|
import { Component, Inject, Injectable, OnInit } from '@angular/core';
|
||
|
|
|
||
|
|
import { APP_CONFIG, AppConfig,
|
||
|
|
HERO_DI_CONFIG } from './app.config';
|
||
|
|
|
||
|
|
import { HeroService } from './heroes/hero.service';
|
||
|
|
import { heroServiceProvider } from './heroes/hero.service.provider';
|
||
|
|
import { Logger } from './logger.service';
|
||
|
|
import { UserService } from './user.service';
|
||
|
|
|
||
|
|
let template = '{{log}}';
|
||
|
|
|
||
|
|
//////////////////////////////////////////
|
||
|
|
@Component({
|
||
|
|
selector: 'provider-1',
|
||
|
|
template: template,
|
||
|
|
providers: [Logger]
|
||
|
|
})
|
||
|
|
export class Provider1Component {
|
||
|
|
log: string;
|
||
|
|
constructor(logger: Logger) {
|
||
|
|
logger.log('Hello from logger provided with Logger class');
|
||
|
|
this.log = logger.logs[0];
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
//////////////////////////////////////////
|
||
|
|
@Component({
|
||
|
|
selector: 'provider-3',
|
||
|
|
template: template,
|
||
|
|
providers:
|
||
|
|
[{ provide: Logger, useClass: Logger }]
|
||
|
|
})
|
||
|
|
export class Provider3Component {
|
||
|
|
log: string;
|
||
|
|
constructor(logger: Logger) {
|
||
|
|
logger.log('Hello from logger provided with useClass:Logger');
|
||
|
|
this.log = logger.logs[0];
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
//////////////////////////////////////////
|
||
|
|
class BetterLogger extends Logger {}
|
||
|
|
|
||
|
|
@Component({
|
||
|
|
selector: 'provider-4',
|
||
|
|
template: template,
|
||
|
|
providers:
|
||
|
|
[{ provide: Logger, useClass: BetterLogger }]
|
||
|
|
})
|
||
|
|
export class Provider4Component {
|
||
|
|
log: string;
|
||
|
|
constructor(logger: Logger) {
|
||
|
|
logger.log('Hello from logger provided with useClass:BetterLogger');
|
||
|
|
this.log = logger.logs[0];
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
//////////////////////////////////////////
|
||
|
|
@Injectable()
|
||
|
|
class EvenBetterLogger extends Logger {
|
||
|
|
constructor(private userService: UserService) { super(); }
|
||
|
|
|
||
|
|
log(message: string) {
|
||
|
|
let name = this.userService.user.name;
|
||
|
|
super.log(`Message to ${name}: ${message}`);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
@Component({
|
||
|
|
selector: 'provider-5',
|
||
|
|
template: template,
|
||
|
|
providers:
|
||
|
|
[ UserService,
|
||
|
|
{ provide: Logger, useClass: EvenBetterLogger }]
|
||
|
|
})
|
||
|
|
export class Provider5Component {
|
||
|
|
log: string;
|
||
|
|
constructor(logger: Logger) {
|
||
|
|
logger.log('Hello from EvenBetterlogger');
|
||
|
|
this.log = logger.logs[0];
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
//////////////////////////////////////////
|
||
|
|
class NewLogger extends Logger {}
|
||
|
|
class OldLogger {
|
||
|
|
logs: string[] = [];
|
||
|
|
log(message: string) {
|
||
|
|
throw new Error('Should not call the old logger!');
|
||
|
|
};
|
||
|
|
}
|
||
|
|
|
||
|
|
@Component({
|
||
|
|
selector: 'provider-6a',
|
||
|
|
template: template,
|
||
|
|
providers:
|
||
|
|
[ NewLogger,
|
||
|
|
// Not aliased! Creates two instances of `NewLogger`
|
||
|
|
{ provide: OldLogger, useClass: NewLogger}]
|
||
|
|
})
|
||
|
|
export class Provider6aComponent {
|
||
|
|
log: string;
|
||
|
|
constructor(newLogger: NewLogger, oldLogger: OldLogger) {
|
||
|
|
if (newLogger === oldLogger){
|
||
|
|
throw new Error('expected the two loggers to be different instances');
|
||
|
|
}
|
||
|
|
oldLogger.log('Hello OldLogger (but we want NewLogger)');
|
||
|
|
// The newLogger wasn't called so no logs[]
|
||
|
|
// display the logs of the oldLogger.
|
||
|
|
this.log = newLogger.logs[0] || oldLogger.logs[0];
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
@Component({
|
||
|
|
selector: 'provider-6b',
|
||
|
|
template: template,
|
||
|
|
providers:
|
||
|
|
[ NewLogger,
|
||
|
|
// Alias OldLogger w/ reference to NewLogger
|
||
|
|
{ provide: OldLogger, useExisting: NewLogger}]
|
||
|
|
})
|
||
|
|
export class Provider6bComponent {
|
||
|
|
log: string;
|
||
|
|
constructor(newLogger: NewLogger, oldLogger: OldLogger) {
|
||
|
|
if (newLogger !== oldLogger){
|
||
|
|
throw new Error('expected the two loggers to be the same instance');
|
||
|
|
}
|
||
|
|
oldLogger.log('Hello from NewLogger (via aliased OldLogger)');
|
||
|
|
this.log = newLogger.logs[0];
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
//////////////////////////////////////////
|
||
|
|
// An object in the shape of the logger service
|
||
|
|
let silentLogger = {
|
||
|
|
logs: ['Silent logger says "Shhhhh!". Provided via "useValue"'],
|
||
|
|
log: () => {}
|
||
|
|
};
|
||
|
|
|
||
|
|
@Component({
|
||
|
|
selector: 'provider-7',
|
||
|
|
template: template,
|
||
|
|
providers:
|
||
|
|
[{ provide: Logger, useValue: silentLogger }]
|
||
|
|
})
|
||
|
|
export class Provider7Component {
|
||
|
|
log: string;
|
||
|
|
constructor(logger: Logger) {
|
||
|
|
logger.log('Hello from logger provided with useValue');
|
||
|
|
this.log = logger.logs[0];
|
||
|
|
}
|
||
|
|
}
|
||
|
|
/////////////////
|
||
|
|
|
||
|
|
@Component({
|
||
|
|
selector: 'provider-8',
|
||
|
|
template: template,
|
||
|
|
providers: [heroServiceProvider, Logger, UserService]
|
||
|
|
})
|
||
|
|
export class Provider8Component {
|
||
|
|
// must be true else this component would have blown up at runtime
|
||
|
|
log = 'Hero service injected successfully via heroServiceProvider';
|
||
|
|
|
||
|
|
constructor(heroService: HeroService) { }
|
||
|
|
}
|
||
|
|
|
||
|
|
/////////////////
|
||
|
|
@Component({
|
||
|
|
selector: 'provider-9',
|
||
|
|
template: template,
|
||
|
|
/*
|
||
|
|
// FAIL! Can't use interface as provider token
|
||
|
|
[{ provide: AppConfig, useValue: HERO_DI_CONFIG })]
|
||
|
|
*/
|
||
|
|
providers: [{ provide: APP_CONFIG, useValue: HERO_DI_CONFIG }]
|
||
|
|
})
|
||
|
|
export class Provider9Component implements OnInit {
|
||
|
|
log: string;
|
||
|
|
/*
|
||
|
|
// FAIL! Can't inject using the interface as the parameter type
|
||
|
|
constructor(private config: AppConfig){ }
|
||
|
|
*/
|
||
|
|
constructor(@Inject(APP_CONFIG) private config: AppConfig) { }
|
||
|
|
|
||
|
|
ngOnInit() {
|
||
|
|
this.log = 'APP_CONFIG Application title is ' + this.config.title;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
//////////////////////////////////////////
|
||
|
|
// Sample providers 1 to 7 illustrate a required logger dependency.
|
||
|
|
// Optional logger, can be null
|
||
|
|
import { Optional } from '@angular/core';
|
||
|
|
|
||
|
|
let some_message = 'Hello from the injected logger';
|
||
|
|
|
||
|
|
@Component({
|
||
|
|
selector: 'provider-10',
|
||
|
|
template: template,
|
||
|
|
providers: [{ provide: Logger, useValue: null }]
|
||
|
|
})
|
||
|
|
export class Provider10Component implements OnInit {
|
||
|
|
log: string;
|
||
|
|
constructor(@Optional() private logger: Logger) {
|
||
|
|
if (this.logger) {
|
||
|
|
this.logger.log(some_message);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
ngOnInit() {
|
||
|
|
this.log = this.logger ? this.logger.logs[0] : 'Optional logger was not available';
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/////////////////
|
||
|
|
@Component({
|
||
|
|
selector: 'my-providers',
|
||
|
|
template: `
|
||
|
|
<h2>Provider variations</h2>
|
||
|
|
<div id="p1"><provider-1></provider-1></div>
|
||
|
|
<div id="p3"><provider-3></provider-3></div>
|
||
|
|
<div id="p4"><provider-4></provider-4></div>
|
||
|
|
<div id="p5"><provider-5></provider-5></div>
|
||
|
|
<div id="p6a"><provider-6a></provider-6a></div>
|
||
|
|
<div id="p6b"><provider-6b></provider-6b></div>
|
||
|
|
<div id="p7"><provider-7></provider-7></div>
|
||
|
|
<div id="p8"><provider-8></provider-8></div>
|
||
|
|
<div id="p9"><provider-9></provider-9></div>
|
||
|
|
<div id="p10"><provider-10></provider-10></div>
|
||
|
|
`
|
||
|
|
})
|
||
|
|
export class ProvidersComponent { }
|
||
|
|
|
||
|
|
|
||
|
|
/*
|
||
|
|
Copyright 2016 Google Inc. All Rights Reserved.
|
||
|
|
Use of this source code is governed by an MIT-style license that
|
||
|
|
can be found in the LICENSE file at http://angular.io/license
|
||
|
|
*/"><input type="hidden" name="files[app/test.component.ts]" value="/* tslint:disable */
|
||
|
|
// Simulate a simple test
|
||
|
|
// Reader should look to the testing chapter for the real thing
|
||
|
|
|
||
|
|
import { Component } from '@angular/core';
|
||
|
|
|
||
|
|
import { HeroService } from './heroes/hero.service';
|
||
|
|
import { HeroListComponent } from './heroes/hero-list.component';
|
||
|
|
|
||
|
|
@Component({
|
||
|
|
selector: 'my-tests',
|
||
|
|
template: `
|
||
|
|
<h2>Tests</h2>
|
||
|
|
<p id="tests">Tests {{results.pass}}: {{results.message}}</p>
|
||
|
|
`
|
||
|
|
})
|
||
|
|
export class TestComponent {
|
||
|
|
results = runTests();
|
||
|
|
}
|
||
|
|
|
||
|
|
/////////////////////////////////////
|
||
|
|
function runTests() {
|
||
|
|
|
||
|
|
let expectedHeroes = [{name: 'A'}, {name: 'B'}]
|
||
|
|
let mockService = <HeroService> {getHeroes: () => expectedHeroes }
|
||
|
|
|
||
|
|
it('should have heroes when HeroListComponent created', () => {
|
||
|
|
let hlc = new HeroListComponent(mockService);
|
||
|
|
expect(hlc.heroes.length).toEqual(expectedHeroes.length);
|
||
|
|
});
|
||
|
|
|
||
|
|
return testResults;
|
||
|
|
}
|
||
|
|
|
||
|
|
//////////////////////////////////
|
||
|
|
// Fake Jasmine infrastructure
|
||
|
|
var testName: string;
|
||
|
|
var testResults: {pass: string; message: string};
|
||
|
|
|
||
|
|
function expect(actual: any) {
|
||
|
|
return {
|
||
|
|
toEqual: function(expected: any){
|
||
|
|
testResults = actual === expected ?
|
||
|
|
{pass: 'passed', message: testName} :
|
||
|
|
{pass: 'failed', message: `${testName}; expected ${actual} to equal ${expected}.`};
|
||
|
|
}
|
||
|
|
};
|
||
|
|
}
|
||
|
|
|
||
|
|
function it(label: string, test: () => void) {
|
||
|
|
testName = label;
|
||
|
|
test();
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
/*
|
||
|
|
Copyright 2016 Google Inc. All Rights Reserved.
|
||
|
|
Use of this source code is governed by an MIT-style license that
|
||
|
|
can be found in the LICENSE file at http://angular.io/license
|
||
|
|
*/"><input type="hidden" name="files[app/user.service.ts]" value="import { Injectable } from '@angular/core';
|
||
|
|
|
||
|
|
export class User {
|
||
|
|
constructor(
|
||
|
|
public name: string,
|
||
|
|
public isAuthorized = false) { }
|
||
|
|
}
|
||
|
|
|
||
|
|
// Todo: get the user; don't 'new' it.
|
||
|
|
let alice = new User('Alice', true);
|
||
|
|
let bob = new User('Bob', false);
|
||
|
|
|
||
|
|
@Injectable()
|
||
|
|
export class UserService {
|
||
|
|
user = bob; // initial user is Bob
|
||
|
|
|
||
|
|
// swap users
|
||
|
|
getNewUser() {
|
||
|
|
return this.user = this.user === bob ? alice : bob;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
/*
|
||
|
|
Copyright 2016 Google Inc. All Rights Reserved.
|
||
|
|
Use of this source code is governed by an MIT-style license that
|
||
|
|
can be found in the LICENSE file at http://angular.io/license
|
||
|
|
*/"><input type="hidden" name="files[main.ts]" value="import { platformBrowserDynamic } from '@angular/platform-browser-dynamic';
|
||
|
|
import { AppModule } from './app/app.module';
|
||
|
|
|
||
|
|
platformBrowserDynamic().bootstrapModule(AppModule);
|
||
|
|
|
||
|
|
|
||
|
|
/*
|
||
|
|
Copyright 2016 Google Inc. All Rights Reserved.
|
||
|
|
Use of this source code is governed by an MIT-style license that
|
||
|
|
can be found in the LICENSE file at http://angular.io/license
|
||
|
|
*/"><input type="hidden" name="files[styles.css]" value="/* Master Styles */
|
||
|
|
h1 {
|
||
|
|
color: #369;
|
||
|
|
font-family: Arial, Helvetica, sans-serif;
|
||
|
|
font-size: 250%;
|
||
|
|
}
|
||
|
|
h2, h3 {
|
||
|
|
color: #444;
|
||
|
|
font-family: Arial, Helvetica, sans-serif;
|
||
|
|
font-weight: lighter;
|
||
|
|
}
|
||
|
|
body {
|
||
|
|
margin: 2em;
|
||
|
|
}
|
||
|
|
body, input[text], button {
|
||
|
|
color: #888;
|
||
|
|
font-family: Cambria, Georgia;
|
||
|
|
}
|
||
|
|
a {
|
||
|
|
cursor: pointer;
|
||
|
|
cursor: hand;
|
||
|
|
}
|
||
|
|
button {
|
||
|
|
font-family: Arial;
|
||
|
|
background-color: #eee;
|
||
|
|
border: none;
|
||
|
|
padding: 5px 10px;
|
||
|
|
border-radius: 4px;
|
||
|
|
cursor: pointer;
|
||
|
|
cursor: hand;
|
||
|
|
}
|
||
|
|
button:hover {
|
||
|
|
background-color: #cfd8dc;
|
||
|
|
}
|
||
|
|
button:disabled {
|
||
|
|
background-color: #eee;
|
||
|
|
color: #aaa;
|
||
|
|
cursor: auto;
|
||
|
|
}
|
||
|
|
|
||
|
|
/* Navigation link styles */
|
||
|
|
nav a {
|
||
|
|
padding: 5px 10px;
|
||
|
|
text-decoration: none;
|
||
|
|
margin-right: 10px;
|
||
|
|
margin-top: 10px;
|
||
|
|
display: inline-block;
|
||
|
|
background-color: #eee;
|
||
|
|
border-radius: 4px;
|
||
|
|
}
|
||
|
|
nav a:visited, a:link {
|
||
|
|
color: #607D8B;
|
||
|
|
}
|
||
|
|
nav a:hover {
|
||
|
|
color: #039be5;
|
||
|
|
background-color: #CFD8DC;
|
||
|
|
}
|
||
|
|
nav a.active {
|
||
|
|
color: #039be5;
|
||
|
|
}
|
||
|
|
|
||
|
|
/* items class */
|
||
|
|
.items {
|
||
|
|
margin: 0 0 2em 0;
|
||
|
|
list-style-type: none;
|
||
|
|
padding: 0;
|
||
|
|
width: 24em;
|
||
|
|
}
|
||
|
|
.items li {
|
||
|
|
cursor: pointer;
|
||
|
|
position: relative;
|
||
|
|
left: 0;
|
||
|
|
background-color: #EEE;
|
||
|
|
margin: .5em;
|
||
|
|
padding: .3em 0;
|
||
|
|
height: 1.6em;
|
||
|
|
border-radius: 4px;
|
||
|
|
}
|
||
|
|
.items li:hover {
|
||
|
|
color: #607D8B;
|
||
|
|
background-color: #DDD;
|
||
|
|
left: .1em;
|
||
|
|
}
|
||
|
|
.items li.selected {
|
||
|
|
background-color: #CFD8DC;
|
||
|
|
color: white;
|
||
|
|
}
|
||
|
|
.items li.selected:hover {
|
||
|
|
background-color: #BBD8DC;
|
||
|
|
}
|
||
|
|
.items .text {
|
||
|
|
position: relative;
|
||
|
|
top: -3px;
|
||
|
|
}
|
||
|
|
.items .badge {
|
||
|
|
display: inline-block;
|
||
|
|
font-size: small;
|
||
|
|
color: white;
|
||
|
|
padding: 0.8em 0.7em 0 0.7em;
|
||
|
|
background-color: #607D8B;
|
||
|
|
line-height: 1em;
|
||
|
|
position: relative;
|
||
|
|
left: -1px;
|
||
|
|
top: -4px;
|
||
|
|
height: 1.8em;
|
||
|
|
margin-right: .8em;
|
||
|
|
border-radius: 4px 0 0 4px;
|
||
|
|
}
|
||
|
|
/* everywhere else */
|
||
|
|
* {
|
||
|
|
font-family: Arial, Helvetica, sans-serif;
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
/*
|
||
|
|
Copyright 2016 Google Inc. All Rights Reserved.
|
||
|
|
Use of this source code is governed by an MIT-style license that
|
||
|
|
can be found in the LICENSE file at http://angular.io/license
|
||
|
|
*/"><input type="hidden" name="files[index.html]" value="<!DOCTYPE html>
|
||
|
|
<html>
|
||
|
|
<head>
|
||
|
|
<title>Dependency Injection</title>
|
||
|
|
<script>document.write('<base href="' + document.location + '" />');</script>
|
||
|
|
<meta charset="UTF-8">
|
||
|
|
<meta name="viewport" content="width=device-width, initial-scale=1">
|
||
|
|
<link rel="stylesheet" href="styles.css">
|
||
|
|
|
||
|
|
<!-- Polyfills -->
|
||
|
|
<script src="https://unpkg.com/core-js/client/shim.min.js"></script>
|
||
|
|
|
||
|
|
<script src="https://unpkg.com/zone.js@0.7.4?main=browser"></script>
|
||
|
|
<script src="https://unpkg.com/systemjs@0.19.39/dist/system.src.js"></script>
|
||
|
|
|
||
|
|
<script src="https://cdn.rawgit.com/angular/angular.io/b3c65a9/public/docs/_examples/_boilerplate/systemjs.config.web.js"></script>
|
||
|
|
<script>
|
||
|
|
System.import('main.js').catch(function(err){ console.error(err); });
|
||
|
|
</script>
|
||
|
|
</head>
|
||
|
|
|
||
|
|
<body>
|
||
|
|
<my-app>Loading my-app ...</my-app>
|
||
|
|
</body>
|
||
|
|
|
||
|
|
</html>
|
||
|
|
|
||
|
|
|
||
|
|
<!--
|
||
|
|
Copyright 2016 Google Inc. All Rights Reserved.
|
||
|
|
Use of this source code is governed by an MIT-style license that
|
||
|
|
can be found in the LICENSE file at http://angular.io/license
|
||
|
|
-->"><input type="hidden" name="tags[0]" value="angular"><input type="hidden" name="tags[1]" value="example"><input type="hidden" name="tags[2]" value="dependency"><input type="hidden" name="tags[3]" value="di"><input type="hidden" name="private" value="true"><input type="hidden" name="description" value="Angular Example - Dependency Injection"></form><script>document.getElementById("mainForm").submit();</script></body></html>
|