refactor: move angular source to /packages rather than modules/@angular

packages/platform-webworker/src/worker_render.ts

@@ -0,0 +1,152 @@
+/**
+ * @license
+ * Copyright 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 https://angular.io/license
+ */
+
+import {CommonModule, ɵPLATFORM_WORKER_UI_ID as PLATFORM_WORKER_UI_ID} from '@angular/common';
+import {ErrorHandler, Injectable, InjectionToken, Injector, NgZone, PLATFORM_ID, PLATFORM_INITIALIZER, PlatformRef, Provider, RendererFactory2, RootRenderer, Testability, createPlatformFactory, isDevMode, platformCore, ɵAPP_ID_RANDOM_PROVIDER as APP_ID_RANDOM_PROVIDER} from '@angular/core';
+import {DOCUMENT, EVENT_MANAGER_PLUGINS, EventManager, HAMMER_GESTURE_CONFIG, HammerGestureConfig, ɵBROWSER_SANITIZATION_PROVIDERS as BROWSER_SANITIZATION_PROVIDERS, ɵBrowserDomAdapter as BrowserDomAdapter, ɵBrowserGetTestability as BrowserGetTestability, ɵDomEventsPlugin as DomEventsPlugin, ɵDomRendererFactory2 as DomRendererFactory2, ɵDomSharedStylesHost as DomSharedStylesHost, ɵHammerGesturesPlugin as HammerGesturesPlugin, ɵKeyEventsPlugin as KeyEventsPlugin, ɵSharedStylesHost as SharedStylesHost, ɵgetDOM as getDOM} from '@angular/platform-browser';
+
+import {ON_WEB_WORKER} from './web_workers/shared/api';
+import {ClientMessageBrokerFactory, ClientMessageBrokerFactory_} from './web_workers/shared/client_message_broker';
+import {MessageBus} from './web_workers/shared/message_bus';
+import {PostMessageBus, PostMessageBusSink, PostMessageBusSource} from './web_workers/shared/post_message_bus';
+import {RenderStore} from './web_workers/shared/render_store';
+import {Serializer} from './web_workers/shared/serializer';
+import {ServiceMessageBrokerFactory, ServiceMessageBrokerFactory_} from './web_workers/shared/service_message_broker';
+import {MessageBasedRenderer2} from './web_workers/ui/renderer';
+
+
+/**
+ * Wrapper class that exposes the Worker
+ * and underlying {@link MessageBus} for lower level message passing.
+ *
+ * @experimental WebWorker support is currently experimental.
+ */
+@Injectable()
+export class WebWorkerInstance {
+  public worker: Worker;
+  public bus: MessageBus;
+
+  /** @internal */
+  public init(worker: Worker, bus: MessageBus) {
+    this.worker = worker;
+    this.bus = bus;
+  }
+}
+
+/**
+ * @experimental WebWorker support is currently experimental.
+ */
+export const WORKER_SCRIPT = new InjectionToken<string>('WebWorkerScript');
+
+/**
+ * A multi-provider used to automatically call the `start()` method after the service is
+ * created.
+ *
+ * @experimental WebWorker support is currently experimental.
+ */
+export const WORKER_UI_STARTABLE_MESSAGING_SERVICE =
+    new InjectionToken<({start: () => void})[]>('WorkerRenderStartableMsgService');
+
+export const _WORKER_UI_PLATFORM_PROVIDERS: Provider[] = [
+  {provide: NgZone, useFactory: createNgZone, deps: []},
+  MessageBasedRenderer2,
+  {provide: WORKER_UI_STARTABLE_MESSAGING_SERVICE, useExisting: MessageBasedRenderer2, multi: true},
+  BROWSER_SANITIZATION_PROVIDERS,
+  {provide: ErrorHandler, useFactory: _exceptionHandler, deps: []},
+  {provide: DOCUMENT, useFactory: _document, deps: []},
+  // TODO(jteplitz602): Investigate if we definitely need EVENT_MANAGER on the render thread
+  // #5298
+  {provide: EVENT_MANAGER_PLUGINS, useClass: DomEventsPlugin, multi: true},
+  {provide: EVENT_MANAGER_PLUGINS, useClass: KeyEventsPlugin, multi: true},
+  {provide: EVENT_MANAGER_PLUGINS, useClass: HammerGesturesPlugin, multi: true},
+  {provide: HAMMER_GESTURE_CONFIG, useClass: HammerGestureConfig},
+  APP_ID_RANDOM_PROVIDER,
+  DomRendererFactory2,
+  {provide: RendererFactory2, useExisting: DomRendererFactory2},
+  {provide: SharedStylesHost, useExisting: DomSharedStylesHost},
+  {provide: ServiceMessageBrokerFactory, useClass: ServiceMessageBrokerFactory_},
+  {provide: ClientMessageBrokerFactory, useClass: ClientMessageBrokerFactory_},
+  Serializer,
+  {provide: ON_WEB_WORKER, useValue: false},
+  RenderStore,
+  DomSharedStylesHost,
+  Testability,
+  EventManager,
+  WebWorkerInstance,
+  {
+    provide: PLATFORM_INITIALIZER,
+    useFactory: initWebWorkerRenderPlatform,
+    multi: true,
+    deps: [Injector]
+  },
+  {provide: PLATFORM_ID, useValue: PLATFORM_WORKER_UI_ID},
+  {provide: MessageBus, useFactory: messageBusFactory, deps: [WebWorkerInstance]},
+];
+
+function initializeGenericWorkerRenderer(injector: Injector) {
+  const bus = injector.get(MessageBus);
+  const zone = injector.get(NgZone);
+  bus.attachToZone(zone);
+
+  // initialize message services after the bus has been created
+  const services = injector.get(WORKER_UI_STARTABLE_MESSAGING_SERVICE);
+  zone.runGuarded(() => { services.forEach((svc: any) => { svc.start(); }); });
+}
+
+function messageBusFactory(instance: WebWorkerInstance): MessageBus {
+  return instance.bus;
+}
+
+function initWebWorkerRenderPlatform(injector: Injector): () => void {
+  return () => {
+    BrowserDomAdapter.makeCurrent();
+    BrowserGetTestability.init();
+    let scriptUri: string;
+    try {
+      scriptUri = injector.get(WORKER_SCRIPT);
+    } catch (e) {
+      throw new Error(
+          'You must provide your WebWorker\'s initialization script with the WORKER_SCRIPT token');
+    }
+
+    const instance = injector.get(WebWorkerInstance);
+    spawnWebWorker(scriptUri, instance);
+
+    initializeGenericWorkerRenderer(injector);
+  };
+}
+
+/**
+ * @experimental WebWorker support is currently experimental.
+ */
+export const platformWorkerUi =
+    createPlatformFactory(platformCore, 'workerUi', _WORKER_UI_PLATFORM_PROVIDERS);
+
+function _exceptionHandler(): ErrorHandler {
+  return new ErrorHandler();
+}
+
+function _document(): any {
+  return document;
+}
+
+function createNgZone(): NgZone {
+  return new NgZone({enableLongStackTrace: isDevMode()});
+}
+
+/**
+ * Spawns a new class and initializes the WebWorkerInstance
+ */
+function spawnWebWorker(uri: string, instance: WebWorkerInstance): void {
+  const webWorker: Worker = new Worker(uri);
+  const sink = new PostMessageBusSink(webWorker);
+  const source = new PostMessageBusSource(webWorker);
+  const bus = new PostMessageBus(sink, source);
+
+  instance.init(webWorker, bus);
+}