eda6a5d52a
BREAKING CHANGE WORKER_RENDER_APP is now deprecated. Use WORKER_RENDER_APPLICATION instead WORKER_RENDER_APP_COMMON has been replaced by WORKER_RENDER_APPLICATION_COMMON closes #6184 Closes #6378
69 lines
2.1 KiB
Dart
69 lines
2.1 KiB
Dart
library angular2.src.platform.worker_render;
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import 'package:angular2/src/platform/worker_render_common.dart'
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show
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WORKER_RENDER_APPLICATION_COMMON,
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WORKER_RENDER_MESSAGING_PROVIDERS,
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WORKER_SCRIPT,
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initializeGenericWorkerRenderer;
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import 'package:angular2/src/web_workers/shared/isolate_message_bus.dart';
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import 'package:angular2/src/web_workers/shared/message_bus.dart';
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import 'package:angular2/core.dart';
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import 'package:angular2/src/core/di.dart';
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import 'package:angular2/src/core/zone/ng_zone.dart';
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import 'dart:isolate';
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import 'dart:async';
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const WORKER_RENDER_APP = WORKER_RENDER_APPLICATION_COMMON;
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initIsolate(String scriptUri) {
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return (NgZone zone) async {
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var instance = await spawnIsolate(Uri.parse(scriptUri));
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return [
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WORKER_RENDER_APPLICATION_COMMON,
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new Provider(WebWorkerInstance, useValue: instance),
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new Provider(APP_INITIALIZER,
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useFactory: (injector) => () => initializeGenericWorkerRenderer(injector),
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multi: true,
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deps: [Injector]),
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new Provider(MessageBus, useValue: instance.bus)
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];
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};
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}
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/**
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* Spawns a new class and initializes the WebWorkerInstance
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*/
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Future<WebWorkerInstance> spawnIsolate(Uri uri) async {
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var receivePort = new ReceivePort();
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var isolateEndSendPort = receivePort.sendPort;
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var isolate = await Isolate.spawnUri(uri, const [], isolateEndSendPort);
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var source = new UIMessageBusSource(receivePort);
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var sendPort = await source.sink;
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var sink = new IsolateMessageBusSink(sendPort);
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var bus = new IsolateMessageBus(sink, source);
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return new WebWorkerInstance(isolate, bus);
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}
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class UIMessageBusSource extends IsolateMessageBusSource {
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UIMessageBusSource(ReceivePort port) : super(port);
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Future<SendPort> get sink => stream.firstWhere((message) {
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return message is SendPort;
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});
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}
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/**
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* Wrapper class that exposes the Isolate
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* and underlying {@link MessageBus} for lower level message passing.
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*/
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@Injectable()
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class WebWorkerInstance {
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Isolate worker;
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MessageBus bus;
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WebWorkerInstance(this.worker, this.bus);
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}
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