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/*
* Module : chrome/chrome-port.js
* Copyright : (c) 2011-2012, Galois, Inc.
*
* Maintainer :
* Stability : Provisional
* Portability: Not Portable (Chrome Only)
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
if (typeof goog != 'undefined') {
goog.provide('fiveui.ChromePort');
} else {
var fiveui = fiveui || {};
}
/**
* @constructor
* @param {!{onMessage:Object,postMessage:function(*):void}} port The connection to manage.
*/
fiveui.ChromePort = function(port) {
var events = {};
this._port = port;
this._events = events;
this._port.onMessage.addListener(function(obj) {
var evt = obj.type;
var cb = events[evt];
if(null != evt && null != cb) {
cb(obj.payload);
}
});
};
/**
* Listen to incoming messages.
*
* @param {!string} evt The event to listen for.
* @param {!function(*)} cb The callback to invoke.
* @return {void}
*/
fiveui.ChromePort.prototype.on = function(evt, cb) {
this._events[evt] = cb;
};
/**
* Send a message to the background.
*
* @param {!string} evt The event to fire.
* @param {?Object} obj The data to associate with the event.
* @return {void}
*/
fiveui.ChromePort.prototype.emit = function(evt, obj) {
// console.log('chromeport.emit: '+evt);
// console.log(obj);
this._port.postMessage({ type: evt, payload: obj });
// console.log('chromeport.emit: '+evt+' done');
};
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