webapprt/PaymentUIGlue.js

   1 /* This Source Code Form is subject to the terms of the Mozilla Public
   2  * License, v. 2.0. If a copy of the MPL was not distributed with this file,
   3  * You can obtain one at http://mozilla.org/MPL/2.0/. */
   4
   5 "use strict";
   6
   7 const { interfaces: Ci, utils: Cu } = Components;
   8
   9 Cu.import("resource://gre/modules/XPCOMUtils.jsm");
  10 Cu.import("resource://gre/modules/Services.jsm");
  11
  12 XPCOMUtils.defineLazyServiceGetter(this, "cpmm",
  13                                   "@mozilla.org/childprocessmessagemanager;1",
  14                                   "nsIMessageSender");
  15
  16 function paymentSuccess(aRequestId) {
  17   return paymentCallback(aRequestId, "Payment:Success");
  18 }
  19
  20 function paymentFailed(aRequestId) {
  21   return paymentCallback(aRequestId, "Payment:Failed");
  22 }
  23
  24 function paymentCallback(aRequestId, aMsg) {
  25   return function(aResult) {
  26           closePaymentWindow(aRequestId, function() {
  27             cpmm.sendAsyncMessage(aMsg, { result: aResult,
  28                                           requestId: aRequestId });
  29           });
  30         };
  31 }
  32
  33 let payments = {};
  34
  35 function closePaymentWindow(aId, aCallback) {
  36   if (payments[aId]) {
  37     payments[aId].handled = true;
  38     payments[aId].win.close();
  39     payments[aId] = null;
  40   }
  41
  42   aCallback();
  43 }
  44
  45 function PaymentUI() {}
  46
  47 PaymentUI.prototype = {
  48   classID: Components.ID("{ede1124f-72e8-4a31-9567-3270d46f21fb}"),
  49   QueryInterface: XPCOMUtils.generateQI([Ci.nsIPaymentUIGlue]),
  50
  51   confirmPaymentRequest: function(aRequestId, aRequests, aSuccessCb, aErrorCb) {
  52     // If there's only one payment provider that will work, just move on
  53     // without prompting the user.
  54     if (aRequests.length == 1) {
  55       aSuccessCb.onresult(aRequestId, aRequests[0].wrappedJSObject.type);
  56       return;
  57     }
  58
  59     let items = [];
  60
  61     // Otherwise, let the user select a payment provider from a list.
  62     for (let i = 0; i < aRequests.length; i++) {
  63       let request = aRequests[i].wrappedJSObject;
  64       let requestText = request.providerName;
  65       if (request.productPrice && Array.isArray(request.productPrice)) {
  66         // We should guess the user currency and use that instead.
  67         requestText += " (" + request.productPrice[0].amount + " " +
  68                               request.productPrice[0].currency + ")";
  69       }
  70       items.push(requestText);
  71     }
  72
  73     let selected = {};
  74
  75     let bundle = Services.strings.
  76                    createBundle("chrome://webapprt/locale/webapp.properties");
  77     let result = Services.prompt.
  78                    select(null, bundle.GetStringFromName("paymentDialog.title"),
  79                           bundle.GetStringFromName("paymentDialog.message"),
  80                           items.length, items, selected);
  81     if (result) {
  82       aSuccessCb.onresult(aRequestId,
  83                           aRequests[selected.value].wrappedJSObject.type);
  84     } else {
  85       aErrorCb.onresult(aRequestId, "USER_CANCELLED");
  86     }
  87   },
  88
  89   showPaymentFlow: function(aRequestId, aPaymentFlowInfo, aErrorCb) {
  90     let win = Services.ww.
  91                 openWindow(null,
  92                            "chrome://webapprt/content/webapp.xul",
  93                            "_blank",
  94                            "chrome,dialog=no,resizable,scrollbars,centerscreen",
  95                            null);
  96
  97     // Store a reference to the window so that we can close it when the payment
  98     // succeeds or fails.
  99     payments[aRequestId] = { win: win, handled: false };
 100
 101     // Inject paymentSuccess and paymentFailed methods into the document after
 102     // its loaded.
 103     win.addEventListener("DOMContentLoaded", function onDOMContentLoaded() {
 104       win.removeEventListener("DOMContentLoaded", onDOMContentLoaded);
 105
 106       let browserElement = win.document.getElementById("content");
 107       browserElement.
 108         setAttribute("src", aPaymentFlowInfo.uri + aPaymentFlowInfo.jwt);
 109
 110       browserElement.addEventListener("DOMWindowCreated",
 111         function onDOMWindowCreated() {
 112           browserElement.removeEventListener("DOMWindowCreated",
 113                                              onDOMWindowCreated);
 114
 115
 116           win.document.getElementById("content").contentDocument.defaultView
 117              .wrappedJSObject.mozPaymentProvider = {
 118                __exposedProps__: {
 119                  paymentSuccess: 'r',
 120                  paymentFailed: 'r'
 121                },
 122                paymentSuccess: paymentSuccess(aRequestId),
 123                paymentFailed: paymentFailed(aRequestId)
 124              };
 125         }, true);
 126     });
 127
 128     let winObserver = function(aClosedWin, aTopic) {
 129       if (aTopic == "domwindowclosed") {
 130         // Fail the payment if the window is closed.
 131         if (aClosedWin == win) {
 132           Services.ww.unregisterNotification(winObserver);
 133           if (payments[aRequestId] && !payments[aRequestId].handled) {
 134             aErrorCb.onresult(aRequestId, "USER_CANCELLED");
 135           }
 136         }
 137       }
 138     }
 139
 140     Services.ww.registerNotification(winObserver);
 141   },
 142
 143   cleanup: function() {
 144   },
 145 }
 146
 147 this.NSGetFactory = XPCOMUtils.generateNSGetFactory([PaymentUI]);