gecko/b2g/chrome/content/payment.js

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/* -*- Mode: Java; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- /
/* vim: set shiftwidth=2 tabstop=2 autoindent cindent expandtab: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this file,
* You can obtain one at http://mozilla.org/MPL/2.0/. */
// This JS shim contains the callbacks to fire DOMRequest events for
// navigator.pay API within the payment processor's scope.
"use strict";
dump("======================= payment.js ======================= \n");
let { classes: Cc, interfaces: Ci, utils: Cu } = Components;
Cu.import("resource://gre/modules/XPCOMUtils.jsm");
XPCOMUtils.defineLazyServiceGetter(this, "cpmm",
"@mozilla.org/childprocessmessagemanager;1",
"nsIMessageSender");
XPCOMUtils.defineLazyServiceGetter(this, "uuidgen",
"@mozilla.org/uuid-generator;1",
"nsIUUIDGenerator");
const kClosePaymentFlowEvent = "close-payment-flow-dialog";
function paymentSuccess(aResult) {
closePaymentFlowDialog(function notifySuccess() {
cpmm.sendAsyncMessage("Payment:Success", { result: aResult });
});
}
function paymentFailed(aErrorMsg) {
closePaymentFlowDialog(function notifyError() {
cpmm.sendAsyncMessage("Payment:Failed", { errorMsg: aErrorMsg });
});
}
function closePaymentFlowDialog(aCallback) {
// After receiving the payment provider confirmation about the
// successful or failed payment flow, we notify the UI to close the
// payment flow dialog and return to the caller application.
let randomId = uuidgen.generateUUID().toString();
let id = kClosePaymentFlowEvent + "-" + randomId;
let browser = Services.wm.getMostRecentWindow("navigator:browser");
let content = browser.getContentWindow();
if (!content) {
return;
}
let detail = {
type: kClosePaymentFlowEvent,
id: id
};
// In order to avoid race conditions, we wait for the UI to notify that
// it has successfully closed the payment flow and has recovered the
// caller app, before notifying the parent process to fire the success
// or error event over the DOMRequest.
content.addEventListener("mozContentEvent",
function closePaymentFlowReturn(evt) {
if (evt.detail.id == id && aCallback) {
aCallback();
}
content.removeEventListener("mozContentEvent",
closePaymentFlowReturn);
});
browser.shell.sendChromeEvent(detail);
}
addEventListener("DOMContentLoaded", function(e) {
content.wrappedJSObject.paymentSuccess = paymentSuccess;
content.wrappedJSObject.paymentFailed = paymentFailed;
});