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// Copyright (c) 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
function ChromeOSValidator() {
}
ChromeOSValidator.getInstance = function() {
if (!ChromeOSValidator.instance_) {
ChromeOSValidator.instance_ = new ChromeOSValidator();
}
return ChromeOSValidator.instance_;
};
ChromeOSValidator.prototype = {
LOADER_ORIGIN: 'chrome-extension://nbicjcbcmclhihdkigkjgkgafckdfcom',
LOADER_PAGE: '/background.html',
callback_: undefined,
validate: function(callback) {
this.callback_ = callback;
var msg = { method: 'validate' };
window.parent.postMessage(msg,
this.LOADER_ORIGIN + this.LOADER_PAGE);
},
initialize: function() {
window.addEventListener('message', this.onMessage.bind(this), false);
},
isValidMessage_: function(msg) {
return msg.origin == this.LOADER_ORIGIN;
},
onMessage: function(e) {
var msg = e.data;
if (msg.method == 'validationResults' && this.isValidMessage_(e)) {
if (this.callback_)
this.callback_(msg.os == 'ChromeOS');
} else {
console.log('#### ChromeOSValidator.onMessage: unknown message');
if (this.callback_)
this.callback_(false);
}
}
};
ChromeOSValidator.getInstance().initialize();
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