angular-cn/packages/examples/upgrade/static/ts/lite-multi/module.ts

/**
 * @license
 * Copyright Google LLC All Rights Reserved.
 *
 * Use of this source code is governed by an MIT-style license that can be
 * found in the LICENSE file at https://angular.io/license
 */

// #docplaster
import {Component, Directive, ElementRef, getPlatform, Injectable, Injector, NgModule, StaticProvider} from '@angular/core';
import {BrowserModule} from '@angular/platform-browser';
import {platformBrowserDynamic} from '@angular/platform-browser-dynamic';
import {downgradeComponent, downgradeInjectable, downgradeModule, UpgradeComponent} from '@angular/upgrade/static';


declare var angular: ng.IAngularStatic;

// An Angular module that declares an Angular service and a component,
// which in turn uses an upgraded AngularJS component.
@Component({
  selector: 'ng2A',
  template: 'Component A | <ng1A></ng1A>',
})
export class Ng2AComponent {
}

@Directive({
  selector: 'ng1A',
})
export class Ng1AComponentFacade extends UpgradeComponent {
  constructor(elementRef: ElementRef, injector: Injector) {
    super('ng1A', elementRef, injector);
  }
}

@Injectable()
export class Ng2AService {
  getValue() {
    return 'ng2';
  }
}

@NgModule({
  imports: [BrowserModule],
  providers: [Ng2AService],
  declarations: [Ng1AComponentFacade, Ng2AComponent],
  entryComponents: [Ng2AComponent],
})
export class Ng2AModule {
  ngDoBootstrap() {}
}


// Another Angular module that declares an Angular component.
@Component({
  selector: 'ng2B',
  template: 'Component B',
})
export class Ng2BComponent {
}

@NgModule({
  imports: [BrowserModule],
  declarations: [Ng2BComponent],
  entryComponents: [Ng2BComponent],
})
export class Ng2BModule {
  ngDoBootstrap() {}
}


// The downgraded Angular modules.
const downgradedNg2AModule = downgradeModule(
    (extraProviders: StaticProvider[]) =>
        (getPlatform() || platformBrowserDynamic(extraProviders)).bootstrapModule(Ng2AModule));

const downgradedNg2BModule = downgradeModule(
    (extraProviders: StaticProvider[]) =>
        (getPlatform() || platformBrowserDynamic(extraProviders)).bootstrapModule(Ng2BModule));


// The AngularJS app including downgraded modules, components and injectables.
const appModule =
    angular.module('exampleAppModule', [downgradedNg2AModule, downgradedNg2BModule])
        .component('exampleApp', {
          template: `
        <nav>
          <button ng-click="$ctrl.page = page" ng-repeat="page in ['A', 'B']">
            Page {{ page }}
          </button>
        </nav>
        <hr />
        <main ng-switch="$ctrl.page">
          <ng2-a ng-switch-when="A"></ng2-a>
          <ng2-b ng-switch-when="B"></ng2-b>
        </main>
      `,
          controller: class ExampleAppController {
            page = 'A';
          },
        })
        .component('ng1A', {
          template: 'ng1({{ $ctrl.value }})',
          controller: [
            'ng2AService',
            class Ng1AController {
              value = this.ng2AService.getValue();
              constructor(private ng2AService: Ng2AService) {}
            }
          ],
        })
        .directive('ng2A', downgradeComponent({
                     component: Ng2AComponent,
                     // Since there is more than one downgraded Angular module,
                     // specify which module this component belongs to.
                     downgradedModule: downgradedNg2AModule,
                     propagateDigest: false,
                   }))
        .directive('ng2B', downgradeComponent({
                     component: Ng2BComponent,
                     // Since there is more than one downgraded Angular module,
                     // specify which module this component belongs to.
                     downgradedModule: downgradedNg2BModule,
                     propagateDigest: false,
                   }))
        .factory('ng2AService', downgradeInjectable(Ng2AService, downgradedNg2AModule));


// Bootstrap the AngularJS app.
angular.bootstrap(document.body, [appModule.name]);