1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/b2g/components/PaymentGlue.js Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,208 @@
1.4 +/* This Source Code Form is subject to the terms of the Mozilla Public
1.5 + * License, v. 2.0. If a copy of the MPL was not distributed with this file,
1.6 + * You can obtain one at http://mozilla.org/MPL/2.0/. */
1.7 +
1.8 +"use strict";
1.9 +
1.10 +const { classes: Cc, interfaces: Ci, utils: Cu } = Components;
1.11 +
1.12 +Cu.import("resource://gre/modules/XPCOMUtils.jsm");
1.13 +Cu.import("resource://gre/modules/Services.jsm");
1.14 +
1.15 +// JS shim that contains the callback functions to be triggered from the
1.16 +// payment provider's code in order to fire DOMRequest events.
1.17 +const kPaymentShimFile = "chrome://b2g/content/payment.js";
1.18 +
1.19 +// Type of MozChromEvents to handle payment dialogs.
1.20 +const kOpenPaymentConfirmationEvent = "open-payment-confirmation-dialog";
1.21 +const kOpenPaymentFlowEvent = "open-payment-flow-dialog";
1.22 +
1.23 +const PREF_DEBUG = "dom.payment.debug";
1.24 +
1.25 +XPCOMUtils.defineLazyServiceGetter(this, "uuidgen",
1.26 + "@mozilla.org/uuid-generator;1",
1.27 + "nsIUUIDGenerator");
1.28 +
1.29 +XPCOMUtils.defineLazyModuleGetter(this, "SystemAppProxy",
1.30 + "resource://gre/modules/SystemAppProxy.jsm");
1.31 +
1.32 +function PaymentUI() {
1.33 + try {
1.34 + this._debug =
1.35 + Services.prefs.getPrefType(PREF_DEBUG) == Ci.nsIPrefBranch.PREF_BOOL
1.36 + && Services.prefs.getBoolPref(PREF_DEBUG);
1.37 + } catch(e) {
1.38 + this._debug = false;
1.39 + }
1.40 +}
1.41 +
1.42 +PaymentUI.prototype = {
1.43 +
1.44 + confirmPaymentRequest: function confirmPaymentRequest(aRequestId,
1.45 + aRequests,
1.46 + aSuccessCb,
1.47 + aErrorCb) {
1.48 + let _error = function _error(errorMsg) {
1.49 + if (aErrorCb) {
1.50 + aErrorCb.onresult(aRequestId, errorMsg);
1.51 + }
1.52 + };
1.53 +
1.54 + // The UI should listen for mozChromeEvent 'open-payment-confirmation-dialog'
1.55 + // type in order to create and show the payment request confirmation frame
1.56 + // embeded within a trusted dialog.
1.57 + let id = kOpenPaymentConfirmationEvent + "-" + this.getRandomId();
1.58 + let detail = {
1.59 + type: kOpenPaymentConfirmationEvent,
1.60 + id: id,
1.61 + requestId: aRequestId,
1.62 + paymentRequests: aRequests
1.63 + };
1.64 +
1.65 + // Once the user confirm the payment request and makes his choice, we get
1.66 + // back to the DOM part to get the appropriate payment flow information
1.67 + // based on the selected payment provider.
1.68 + this._handleSelection = (function _handleSelection(evt) {
1.69 + let msg = evt.detail;
1.70 + if (msg.id != id) {
1.71 + return;
1.72 + }
1.73 +
1.74 + if (msg.userSelection && aSuccessCb) {
1.75 + aSuccessCb.onresult(aRequestId, msg.userSelection);
1.76 + } else if (msg.errorMsg) {
1.77 + _error(msg.errorMsg);
1.78 + }
1.79 +
1.80 + SystemAppProxy.removeEventListener("mozContentEvent", this._handleSelection);
1.81 + this._handleSelection = null;
1.82 + }).bind(this);
1.83 + SystemAppProxy.addEventListener("mozContentEvent", this._handleSelection);
1.84 +
1.85 + SystemAppProxy.dispatchEvent(detail);
1.86 + },
1.87 +
1.88 + showPaymentFlow: function showPaymentFlow(aRequestId,
1.89 + aPaymentFlowInfo,
1.90 + aErrorCb) {
1.91 + let _error = function _error(errorMsg) {
1.92 + if (aErrorCb) {
1.93 + aErrorCb.onresult(aRequestId, errorMsg);
1.94 + }
1.95 + };
1.96 +
1.97 + // We ask the UI to browse to the selected payment flow.
1.98 + let id = kOpenPaymentFlowEvent + "-" + this.getRandomId();
1.99 + let detail = {
1.100 + type: kOpenPaymentFlowEvent,
1.101 + id: id,
1.102 + requestId: aRequestId,
1.103 + uri: aPaymentFlowInfo.uri,
1.104 + method: aPaymentFlowInfo.requestMethod,
1.105 + jwt: aPaymentFlowInfo.jwt
1.106 + };
1.107 +
1.108 + // At some point the UI would send the created iframe back so the
1.109 + // callbacks for firing DOMRequest events can be loaded on its
1.110 + // content.
1.111 + this._loadPaymentShim = (function _loadPaymentShim(evt) {
1.112 + let msg = evt.detail;
1.113 + if (msg.id != id) {
1.114 + return;
1.115 + }
1.116 +
1.117 + if (msg.errorMsg) {
1.118 + SystemAppProxy.removeEventListener("mozContentEvent", this._loadPaymentShim);
1.119 + this._loadPaymentShim = null;
1.120 + _error("ERROR_LOADING_PAYMENT_SHIM: " + msg.errorMsg);
1.121 + return;
1.122 + }
1.123 +
1.124 + if (!msg.frame) {
1.125 + SystemAppProxy.removeEventListener("mozContentEvent", this._loadPaymentShim);
1.126 + this._loadPaymentShim = null;
1.127 + _error("ERROR_LOADING_PAYMENT_SHIM");
1.128 + return;
1.129 + }
1.130 +
1.131 + // Try to load the payment shim file containing the payment callbacks
1.132 + // in the content script.
1.133 + let frame = msg.frame;
1.134 + let frameLoader = frame.QueryInterface(Ci.nsIFrameLoaderOwner)
1.135 + .frameLoader;
1.136 + let mm = frameLoader.messageManager;
1.137 + try {
1.138 + mm.loadFrameScript(kPaymentShimFile, true, true);
1.139 + mm.sendAsyncMessage("Payment:LoadShim", { requestId: aRequestId });
1.140 + } catch (e) {
1.141 + if (this._debug) {
1.142 + this.LOG("Error loading " + kPaymentShimFile + " as a frame script: "
1.143 + + e);
1.144 + }
1.145 + _error("ERROR_LOADING_PAYMENT_SHIM");
1.146 + } finally {
1.147 + SystemAppProxy.removeEventListener("mozContentEvent", this._loadPaymentShim);
1.148 + this._loadPaymentShim = null;
1.149 + }
1.150 + }).bind(this);
1.151 + SystemAppProxy.addEventListener("mozContentEvent", this._loadPaymentShim);
1.152 +
1.153 + // We also listen for UI notifications about a closed payment flow. The UI
1.154 + // should provide the reason of the closure within the 'errorMsg' parameter
1.155 + this._notifyPayFlowClosed = (function _notifyPayFlowClosed(evt) {
1.156 + let msg = evt.detail;
1.157 + if (msg.id != id) {
1.158 + return;
1.159 + }
1.160 +
1.161 + if (msg.type != 'cancel') {
1.162 + return;
1.163 + }
1.164 +
1.165 + if (msg.errorMsg) {
1.166 + _error(msg.errorMsg);
1.167 + }
1.168 + SystemAppProxy.removeEventListener("mozContentEvent",
1.169 + this._notifyPayFlowClosed);
1.170 + this._notifyPayFlowClosed = null;
1.171 + }).bind(this);
1.172 + SystemAppProxy.addEventListener("mozContentEvent",
1.173 + this._notifyPayFlowClosed);
1.174 +
1.175 + SystemAppProxy.dispatchEvent(detail);
1.176 + },
1.177 +
1.178 + cleanup: function cleanup() {
1.179 + if (this._handleSelection) {
1.180 + SystemAppProxy.removeEventListener("mozContentEvent", this._handleSelection);
1.181 + this._handleSelection = null;
1.182 + }
1.183 +
1.184 + if (this._notifyPayFlowClosed) {
1.185 + SystemAppProxy.removeEventListener("mozContentEvent", this._notifyPayFlowClosed);
1.186 + this._notifyPayFlowClosed = null;
1.187 + }
1.188 +
1.189 + if (this._loadPaymentShim) {
1.190 + SystemAppProxy.removeEventListener("mozContentEvent", this._loadPaymentShim);
1.191 + this._loadPaymentShim = null;
1.192 + }
1.193 + },
1.194 +
1.195 + getRandomId: function getRandomId() {
1.196 + return uuidgen.generateUUID().toString();
1.197 + },
1.198 +
1.199 + LOG: function LOG(s) {
1.200 + if (!this._debug) {
1.201 + return;
1.202 + }
1.203 + dump("-*- PaymentGlue: " + s + "\n");
1.204 + },
1.205 +
1.206 + classID: Components.ID("{8b83eabc-7929-47f4-8b48-4dea8d887e4b}"),
1.207 +
1.208 + QueryInterface: XPCOMUtils.generateQI([Ci.nsIPaymentUIGlue])
1.209 +}
1.210 +
1.211 +this.NSGetFactory = XPCOMUtils.generateNSGetFactory([PaymentUI]);
