angular2/es6/prod/src/web_workers/shared/service_message_broker.js

Angular 2 - a web framework for modern web apps

var __decorate = (this && this.__decorate) || function (decorators, target, key, desc) {
    var c = arguments.length, r = c < 3 ? target : desc === null ? desc = Object.getOwnPropertyDescriptor(target, key) : desc, d;
    if (typeof Reflect === "object" && typeof Reflect.decorate === "function") r = Reflect.decorate(decorators, target, key, desc);
    else for (var i = decorators.length - 1; i >= 0; i--) if (d = decorators[i]) r = (c < 3 ? d(r) : c > 3 ? d(target, key, r) : d(target, key)) || r;
    return c > 3 && r && Object.defineProperty(target, key, r), r;
};
var __metadata = (this && this.__metadata) || function (k, v) {
    if (typeof Reflect === "object" && typeof Reflect.metadata === "function") return Reflect.metadata(k, v);
};
import { Injectable } from 'angular2/src/core/di';
import { ListWrapper, Map } from 'angular2/src/facade/collection';
import { Serializer } from "angular2/src/web_workers/shared/serializer";
import { isPresent, FunctionWrapper } from "angular2/src/facade/lang";
import { MessageBus } from "angular2/src/web_workers/shared/message_bus";
import { PromiseWrapper, ObservableWrapper } from 'angular2/src/facade/async';
export class ServiceMessageBrokerFactory {
}
export let ServiceMessageBrokerFactory_ = class ServiceMessageBrokerFactory_ extends ServiceMessageBrokerFactory {
    constructor(_messageBus, _serializer) {
        super();
        this._messageBus = _messageBus;
        this._serializer = _serializer;
    }
    createMessageBroker(channel, runInZone = true) {
        this._messageBus.initChannel(channel, runInZone);
        return new ServiceMessageBroker_(this._messageBus, this._serializer, channel);
    }
};
ServiceMessageBrokerFactory_ = __decorate([
    Injectable(), 
    __metadata('design:paramtypes', [MessageBus, Serializer])
], ServiceMessageBrokerFactory_);
export class ServiceMessageBroker {
}
/**
 * Helper class for UIComponents that allows components to register methods.
 * If a registered method message is received from the broker on the worker,
 * the UIMessageBroker deserializes its arguments and calls the registered method.
 * If that method returns a promise, the UIMessageBroker returns the result to the worker.
 */
export class ServiceMessageBroker_ extends ServiceMessageBroker {
    constructor(messageBus, _serializer, channel) {
        super();
        this._serializer = _serializer;
        this.channel = channel;
        this._methods = new Map();
        this._sink = messageBus.to(channel);
        var source = messageBus.from(channel);
        ObservableWrapper.subscribe(source, (message) => this._handleMessage(message));
    }
    registerMethod(methodName, signature, method, returnType) {
        this._methods.set(methodName, (message) => {
            var serializedArgs = message.args;
            let numArgs = signature === null ? 0 : signature.length;
            var deserializedArgs = ListWrapper.createFixedSize(numArgs);
            for (var i = 0; i < numArgs; i++) {
                var serializedArg = serializedArgs[i];
                deserializedArgs[i] = this._serializer.deserialize(serializedArg, signature[i]);
            }
            var promise = FunctionWrapper.apply(method, deserializedArgs);
            if (isPresent(returnType) && isPresent(promise)) {
                this._wrapWebWorkerPromise(message.id, promise, returnType);
            }
        });
    }
    _handleMessage(map) {
        var message = new ReceivedMessage(map);
        if (this._methods.has(message.method)) {
            this._methods.get(message.method)(message);
        }
    }
    _wrapWebWorkerPromise(id, promise, type) {
        PromiseWrapper.then(promise, (result) => {
            ObservableWrapper.callEmit(this._sink, { 'type': 'result', 'value': this._serializer.serialize(result, type), 'id': id });
        });
    }
}
export class ReceivedMessage {
    constructor(data) {
        this.method = data['method'];
        this.args = data['args'];
        this.id = data['id'];
        this.type = data['type'];
    }
}