cross-channel/src/channel/transports/broadcastchannel.transport.js

Cross window messaging

'use strict'

var MessageEvent = require('../../types/message-event.js')
var Message = require('../../types/message.js')
var environment = require('../../utils/environment.js')

var global = environment.global

function Transport (name){
	this.port = new global.BroadcastChannel(name)
}

Transport.supported = Boolean(global.BroadcastChannel)
Transport.EVENT_TYPE = 'message'

Transport.prototype = {
	constructor: Transport,

	send: function (data) {
		var message = new Message(data)
		this.port.postMessage(message)
	},

	onMessageEvent: function (handler) {
		this.port.addEventListener(Transport.EVENT_TYPE, function (event) {
			var messageEvent = new MessageEvent(event)
			handler(messageEvent)
		})
	},

	close: function () {
		this.port.close()
	}
}

module.exports = Transport