chrome/renderer/resources/extensions/webstore_custom_bindings.js

   1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 // Custom binding for the webstore API.
   6
   7 var webstoreNatives = requireNative('webstore');
   8
   9 function Installer() {
  10   this._pendingInstall = null;
  11 }
  12
  13 Installer.prototype.install = function(url, onSuccess, onFailure) {
  14   if (this._pendingInstall)
  15     throw 'A Chrome Web Store installation is already pending.';
  16   var installId = webstoreNatives.Install(url, onSuccess, onFailure);
  17   if (installId !== undefined) {
  18     this._pendingInstall = {
  19       installId: installId,
  20       onSuccess: onSuccess,
  21       onFailure: onFailure
  22     };
  23   }
  24 };
  25
  26 Installer.prototype.onInstallResponse = function(installId, success, error) {
  27   var pendingInstall = this._pendingInstall;
  28   if (!pendingInstall || pendingInstall.installId != installId) {
  29     // TODO(kalman): should this be an error?
  30     return;
  31   }
  32
  33   try {
  34     if (success && pendingInstall.onSuccess)
  35       pendingInstall.onSuccess();
  36     else if (!success && pendingInstall.onFailure)
  37       pendingInstall.onFailure(error);
  38   } catch (e) {
  39     console.error('Exception in chrome.webstore.install response handler: ' +
  40                   e.stack);
  41   } finally {
  42     this._pendingInstall = null;
  43   }
  44 };
  45
  46 var installer = new Installer();
  47
  48 var chromeWebstore = {
  49   install: function install(url, onSuccess, onFailure) {
  50     installer.install(url, onSuccess, onFailure);
  51   }
  52 };
  53
  54 // Called by webstore_binding.cc.
  55 function onInstallResponse(installId, success, error) {
  56   installer.onInstallResponse(installId, success, error);
  57 }
  58
  59 // These must match the names in InstallWebstorebinding in
  60 // chrome/renderer/extensions/dispatcher.cc.
  61 exports.chromeWebstore = chromeWebstore;
  62 exports.onInstallResponse = onInstallResponse;