angular-cn/aio/content/examples/hierarchical-dependency-inj.../ts/plnkr.no-link.html

<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 } from '@angular/core';

@Component({
  selector: 'my-app',
  template: `
    <label><input type=&quot;checkbox&quot; [checked]=&quot;showHeroes&quot;   (change)=&quot;showHeroes=!showHeroes&quot;>Heroes</label>
    <label><input type=&quot;checkbox&quot; [checked]=&quot;showVillains&quot; (change)=&quot;showVillains=!showVillains&quot;>Villains</label>
    <label><input type=&quot;checkbox&quot; [checked]=&quot;showCars&quot;     (change)=&quot;showCars=!showCars&quot;>Cars</label>

    <h1>Hierarchical Dependency Injection</h1>

    <heroes-list   *ngIf=&quot;showHeroes&quot;></heroes-list>
    <villains-list *ngIf=&quot;showVillains&quot;></villains-list>
    <my-cars       *ngIf=&quot;showCars&quot;></my-cars>
  `
})
export class AppComponent {
  showCars = true;
  showHeroes = true;
  showVillains = true;
}


/*
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/app.module.ts]" value="import { NgModule }      from '@angular/core';
import { BrowserModule } from '@angular/platform-browser';
import { FormsModule }   from '@angular/forms';

import { AppComponent }          from './app.component';
import { HeroTaxReturnComponent }     from './hero-tax-return.component';
import { HeroesListComponent }   from './heroes-list.component';
import { HeroesService }         from './heroes.service';
import { VillainsListComponent } from './villains-list.component';

import { carComponents, carServices } from './car.components';

@NgModule({
  imports: [
    BrowserModule,
    FormsModule
  ],
  providers: [
    carServices,
    HeroesService
 ],
  declarations: [
    AppComponent,
    carComponents,
    HeroesListComponent,
    HeroTaxReturnComponent,
    VillainsListComponent
  ],
  bootstrap: [ AppComponent ]
})
export class 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[app/car.components.ts]" value="import { Component } from '@angular/core';

import {
  CarService, CarService2, CarService3,
  EngineService, EngineService2, TiresService
} from './car.services';

////////// CCarComponent ////////////
@Component({
  selector: 'c-car',
  template: `<div>C: {{description}}</div>`,
  providers: [
    { provide: CarService, useClass: CarService3 }
  ]
})
export class CCarComponent {
  description: string;
  constructor(carService: CarService) {
    this.description = `${carService.getCar().description} (${carService.name})`;
  }
}

////////// BCarComponent ////////////
@Component({
  selector: 'b-car',
  template: `
    <div>B: {{description}}</div>
    <c-car></c-car>
  `,
  providers: [
    { provide: CarService,    useClass: CarService2 },
    { provide: EngineService, useClass: EngineService2 }
  ]
})
export class BCarComponent {
  description: string;
  constructor(carService: CarService) {
    this.description = `${carService.getCar().description} (${carService.name})`;
  }
}

////////// ACarComponent ////////////
@Component({
  selector: 'a-car',
  template: `
  <div>A: {{description}}</div>
  <b-car></b-car>`
})
export class ACarComponent {
  description: string;
  constructor(carService: CarService) {
    this.description = `${carService.getCar().description} (${carService.name})`;
  }
}
////////// CarsComponent ////////////
@Component({
  selector: 'my-cars',
  template: `
  <h3>Cars</h3>
  <a-car></a-car>`
})
export class CarsComponent { }

////////////////

export const carComponents = [
  CarsComponent,
  ACarComponent, BCarComponent, CCarComponent
];

// generic car-related services
export const carServices = [
 CarService, EngineService, TiresService
];


/*
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/car.services.ts]" value="import { Injectable } from '@angular/core';

/// Model ///
export class Car {
  name = 'Avocado Motors';
  constructor(public engine: Engine, public tires: Tires) { }

  get description() {
    return `${this.name} car with ` +
      `${this.engine.cylinders} cylinders and ${this.tires.make} tires.`;
  }
}

export class Engine {
  cylinders = 4;
}

export class Tires {
  make  = 'Flintstone';
  model = 'Square';
}

//// Engine services ///
@Injectable()
export class EngineService {
  id = 'E1';
  getEngine() { return new Engine(); }
}

@Injectable()
export class EngineService2 {
  id = 'E2';
  getEngine() {
    const eng = new Engine();
    eng.cylinders = 8;
    return eng;
  }
}

//// Tire services ///
@Injectable()
export class TiresService {
  id = 'T1';
  getTires() { return new Tires(); }
}

/// Car Services ///
@Injectable()
export class CarService {
  id = 'C1';
  constructor(
    protected engineService: EngineService,
    protected tiresService: TiresService) { }

  getCar() {
    return new Car(
      this.engineService.getEngine(),
      this.tiresService.getTires());
  }

  get name() {
    return `${this.id}-${this.engineService.id}-${this.tiresService.id}`;
  }
}

@Injectable()
export class CarService2 extends CarService {
  id = 'C2';
  constructor(
    protected engineService: EngineService,
    protected tiresService: TiresService) {
    super(engineService, tiresService);
  }
  getCar() {
    const car = super.getCar();
    car.name = 'BamBam Motors, BroVan 2000';
    return car;
  }
}

@Injectable()
export class CarService3 extends CarService2 {
  id = 'C3';
  constructor(
    protected engineService: EngineService,
    protected tiresService: TiresService) {
    super(engineService, tiresService);
  }
  getCar() {
    const car = super.getCar();
    car.name = 'Chizzamm Motors, Calico UltraMax Supreme';
    return car;
  }
}


/*
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/hero-tax-return.component.ts]" value="import { Component, EventEmitter, Input, Output } from '@angular/core';
import { HeroTaxReturn }        from './hero';
import { HeroTaxReturnService } from './hero-tax-return.service';

@Component({
  moduleId: module.id,
  selector: 'hero-tax-return',
  templateUrl: './hero-tax-return.component.html',
  styleUrls: [ './hero-tax-return.component.css' ],
  providers: [ HeroTaxReturnService ]
})
export class HeroTaxReturnComponent {
  message = '';
  @Output() close = new EventEmitter<void>();
  @Input()
  get taxReturn(): HeroTaxReturn {
    return this.heroTaxReturnService.taxReturn;
  }
  set taxReturn (htr: HeroTaxReturn) {
    this.heroTaxReturnService.taxReturn = htr;
  }

  constructor(private heroTaxReturnService: HeroTaxReturnService ) { }

  onCanceled()  {
    this.flashMessage('Canceled');
    this.heroTaxReturnService.restoreTaxReturn();
  };

  onClose()  { this.close.emit(); };

  onSaved() {
    this.flashMessage('Saved');
    this.heroTaxReturnService.saveTaxReturn();
  }

  flashMessage(msg: string) {
    this.message = msg;
    setTimeout(() => this.message = '', 500);
  }
}


/*
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/hero-tax-return.service.ts]" value="import { Injectable }    from '@angular/core';
import { HeroTaxReturn } from './hero';
import { HeroesService } from './heroes.service';

@Injectable()
export class HeroTaxReturnService {
  private currentTaxReturn: HeroTaxReturn;
  private originalTaxReturn: HeroTaxReturn;

  constructor(private heroService: HeroesService) { }

  set taxReturn (htr: HeroTaxReturn) {
    this.originalTaxReturn = htr;
    this.currentTaxReturn  = htr.clone();
  }

  get taxReturn (): HeroTaxReturn {
    return this.currentTaxReturn;
  }

  restoreTaxReturn() {
    this.taxReturn = this.originalTaxReturn;
  }

  saveTaxReturn() {
    this.taxReturn = this.currentTaxReturn;
    this.heroService.saveTaxReturn(this.currentTaxReturn).subscribe();
  }
}


/*
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/hero.ts]" value="
export class Hero {
  id:   number;
  name: string;
  tid:  string; // tax id
}

//// HeroTaxReturn ////
let nextId = 100;

export class HeroTaxReturn {
  constructor(
    public id = nextId++,
    public hero: Hero,
    public income = 0 ) {
      if (id === 0) { id = nextId++; }
    }

  get name() { return this.hero.name; }
  get tax()  { return this.income ? .10 * this.income : 0; }
  get tid()  { return this.hero.tid; }

  toString() {
    return `${this.hero.name}`;
  }

  clone() {
    return new HeroTaxReturn(this.id, this.hero, this.income);
  }
}


/*
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-list.component.ts]" value="import { Component }  from '@angular/core';
import { Observable } from 'rxjs/Observable';

import { Hero, HeroTaxReturn } from './hero';
import { HeroesService }       from './heroes.service';

@Component({
  selector: 'heroes-list',
  template: `
    <div>
      <h3>Hero Tax Returns</h3>
      <ul>
        <li *ngFor=&quot;let hero of heroes | async&quot;
            (click)=&quot;showTaxReturn(hero)&quot;>{{hero.name}}
        </li>
      </ul>
      <hero-tax-return
        *ngFor=&quot;let selected of selectedTaxReturns; let i = index&quot;
        [taxReturn]=&quot;selected&quot;
        (close)=&quot;closeTaxReturn(i)&quot;>
      </hero-tax-return>
    </div>
    `,
  styles: [ 'li {cursor: pointer;}' ]
})
export class HeroesListComponent {
  heroes: Observable<Hero[]>;
  selectedTaxReturns: HeroTaxReturn[] = [];

  constructor(private heroesService: HeroesService) {
    this.heroes = heroesService.getHeroes();
  }

  showTaxReturn(hero: Hero) {
    this.heroesService.getTaxReturn(hero)
    .subscribe(htr => {
      // show if not currently shown
      if (!this.selectedTaxReturns.find(tr => tr.id === htr.id)) {
        this.selectedTaxReturns.push(htr);
      }
    });
  }

  closeTaxReturn(ix: number) {
    this.selectedTaxReturns.splice(ix, 1);
  }
}


/*
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.service.ts]" value="import { Injectable } from '@angular/core';

import { Observable } from 'rxjs/Observable';
import { Observer } from 'rxjs/Observer';

import { Hero, HeroTaxReturn } from './hero';

@Injectable()
export class HeroesService {
  heroes: Hero[] = [
    { id: 1, name: 'RubberMan', tid: '082-27-5678'},
    { id: 2, name: 'Tornado',   tid: '099-42-4321'}
  ];

  heroTaxReturns: HeroTaxReturn[] = [
    new HeroTaxReturn(10, this.heroes[0], 35000),
    new HeroTaxReturn(20, this.heroes[1], 1250000)
  ];

  getHeroes(): Observable<Hero[]> {
    return new Observable<Hero[]>((observer: Observer<Hero[]>) => {
      observer.next(this.heroes);
      observer.complete();
    });
  }

  getTaxReturn(hero: Hero): Observable<HeroTaxReturn> {
    return new Observable<HeroTaxReturn>((observer: Observer<HeroTaxReturn>) => {
      const htr = this.heroTaxReturns.find(t => t.hero.id === hero.id);
      observer.next(htr || new HeroTaxReturn(0, hero));
      observer.complete();
    });
  }

  saveTaxReturn(heroTaxReturn: HeroTaxReturn): Observable<HeroTaxReturn> {
    return new Observable<HeroTaxReturn>((observer: Observer<HeroTaxReturn>) => {
      const htr = this.heroTaxReturns.find(t => t.id === heroTaxReturn.id);
      if (htr) {
        heroTaxReturn = Object.assign(htr, heroTaxReturn); // demo: mutate
      } else {
        this.heroTaxReturns.push(heroTaxReturn);
      }
      observer.next(heroTaxReturn);
      observer.complete();
    });
  }
}


/*
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/villains-list.component.ts]" value="import { Component }  from '@angular/core';
import { Observable } from 'rxjs/Observable';

import { Villain, VillainsService } from './villains.service';

@Component({
  moduleId: module.id,
  selector: 'villains-list',
  templateUrl: './villains-list.component.html',
  providers: [ VillainsService ]
})
export class VillainsListComponent {
  villaines: Observable<Villain[]>;

  constructor(private villainesService: VillainsService) {
    this.villaines = villainesService.getVillains();
  }
}


/*
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/villains.service.ts]" value="import { Injectable } from '@angular/core';

import { of }         from 'rxjs/observable/of';

export interface Villain { id: number; name: string; }

@Injectable()
export class VillainsService {
 villains: Villain[] = [
    { id: 1, name: 'Dr. Evil'},
    { id: 2, name: 'Moriarty'}
  ];

  getVillains() {
    return of(this.villains);
  }
}


/*
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[app/hero-tax-return.component.css]" value=".tax-return { border: thin dashed green; margin: 1em; padding: 1em; width: 18em; position: relative }
#name { font-weight: bold;}
#tid { float: right; }
input { font-size: 100%; padding-left: 2px; width: 6em; }
input.num { text-align: right; padding-left: 0; padding-right: 4px; width: 4em;}
fieldset { border: 0 none;}

.msg {
  color: white;
  font-size: 150%;
  position: absolute;
  /*opacity: 0.3;*/
  left: 2px;
  top: 3em;
  width: 98%;
  background-color: green;
  text-align: center;
}
.msg.canceled {
  color: white;
  background-color: red;
}


/*
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[app/hero-tax-return.component.html]" value="<div class=&quot;tax-return&quot;>
  <div class=&quot;msg&quot; [class.canceled]=&quot;message==='Canceled'&quot;>{{message}}</div>
  <fieldset>
    <span  id=name>{{taxReturn.name}}</span>
    <label id=tid>TID: {{taxReturn.tid}}</label>
  </fieldset>
  <fieldset>
    <label>
      Income: <input [(ngModel)]=&quot;taxReturn.income&quot; class=&quot;num&quot;>
    </label>
  </fieldset>
  <fieldset>
    <label>Tax: {{taxReturn.tax}}</label>
  </fieldset>
  <fieldset>
    <button (click)=&quot;onSaved()&quot;>Save</button>
    <button (click)=&quot;onCanceled()&quot;>Cancel</button>
    <button (click)=&quot;onClose()&quot;>Close</button>
  </fieldset>
</div>


<!--
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/villains-list.component.html]" value="<div>
  <h3>Villains</h3>
  <ul>
    <li *ngFor=&quot;let villain of villaines | async&quot;>{{villain.name}}</li>
  </ul>
</div>


<!--
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>Hierarchical Injectors</title>
    <script>document.write('<base href=&quot;' + document.location + '&quot; />');</script>
    <meta charset=&quot;UTF-8&quot;>
    <meta name=&quot;viewport&quot; content=&quot;width=device-width, initial-scale=1&quot;>
    <link rel=&quot;stylesheet&quot; href=&quot;styles.css&quot;>

    <!-- Polyfills -->
    <script src=&quot;https://unpkg.com/core-js/client/shim.min.js&quot;></script>

    <script src=&quot;https://unpkg.com/zone.js@0.7.4?main=browser&quot;></script>
    <script src=&quot;https://unpkg.com/systemjs@0.19.39/dist/system.src.js&quot;></script>

    <script src=&quot;https://cdn.rawgit.com/angular/angular.io/b3c65a9/public/docs/_examples/_boilerplate/systemjs.config.web.js&quot;></script>
    <script>
      System.import('main.js').catch(function(err){ console.error(err); });
    </script>
  </head>

  <body>
    <my-app>loading...</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="injection"><input type="hidden" name="private" value="true"><input type="hidden" name="description" value="Angular Example - Hierachical Dependency Injection"></form><script>document.getElementById("mainForm").submit();</script></body></html>