angular2/es6/prod/src/platform/worker_render.js

Angular 2 - a web framework for modern web apps

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};
import { PostMessageBus, PostMessageBusSink, PostMessageBusSource } from 'angular2/src/web_workers/shared/post_message_bus';
import { MessageBus } from 'angular2/src/web_workers/shared/message_bus';
import { APP_INITIALIZER } from 'angular2/core';
import { Injector, Injectable, Provider } from 'angular2/src/core/di';
import { WORKER_RENDER_APPLICATION_COMMON, WORKER_SCRIPT, initializeGenericWorkerRenderer } from 'angular2/src/platform/worker_render_common';
import { BaseException } from 'angular2/src/facade/exceptions';
import { CONST_EXPR } from 'angular2/src/facade/lang';
/**
 * Wrapper class that exposes the Worker
 * and underlying {@link MessageBus} for lower level message passing.
 */
export let WebWorkerInstance = class WebWorkerInstance {
    /** @internal */
    init(worker, bus) {
        this.worker = worker;
        this.bus = bus;
    }
};
WebWorkerInstance = __decorate([
    Injectable(), 
    __metadata('design:paramtypes', [])
], WebWorkerInstance);
/**
 * An array of providers that should be passed into `application()` when initializing a new Worker.
 */
export const WORKER_RENDER_APPLICATION = CONST_EXPR([
    WORKER_RENDER_APPLICATION_COMMON,
    WebWorkerInstance,
    new Provider(APP_INITIALIZER, {
        useFactory: (injector) => () => initWebWorkerApplication(injector),
        multi: true,
        deps: [Injector]
    }),
    new Provider(MessageBus, { useFactory: (instance) => instance.bus, deps: [WebWorkerInstance] })
]);
function initWebWorkerApplication(injector) {
    var scriptUri;
    try {
        scriptUri = injector.get(WORKER_SCRIPT);
    }
    catch (e) {
        throw new BaseException("You must provide your WebWorker's initialization script with the WORKER_SCRIPT token");
    }
    let instance = injector.get(WebWorkerInstance);
    spawnWebWorker(scriptUri, instance);
    initializeGenericWorkerRenderer(injector);
}
/**
 * Spawns a new class and initializes the WebWorkerInstance
 */
function spawnWebWorker(uri, instance) {
    var webWorker = new Worker(uri);
    var sink = new PostMessageBusSink(webWorker);
    var source = new PostMessageBusSource(webWorker);
    var bus = new PostMessageBus(sink, source);
    instance.init(webWorker, bus);
}