browser/components/downloads/src/DownloadsStartup.js@925c144e1f1f (annotated)
browser/components/downloads/src/DownloadsStartup.js
Fri, 16 Jan 2015 18:13:44 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Fri, 16 Jan 2015 18:13:44 +0100
- branch
- TOR_BUG_9701
- changeset 14
- 925c144e1f1f
- permissions
- -rw-r--r--
Integrate suggestion from review to improve consistency with existing code.
| michael@0 | 1 | /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ |
| michael@0 | 2 | /* vim: set ts=2 et sw=2 tw=80 filetype=javascript: */ |
| michael@0 | 3 | /* This Source Code Form is subject to the terms of the Mozilla Public |
| michael@0 | 4 | * License, v. 2.0. If a copy of the MPL was not distributed with this |
| michael@0 | 5 | * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ |
| michael@0 | 6 | |
| michael@0 | 7 | /** |
| michael@0 | 8 | * This component enables the JavaScript API for downloads at startup. This |
| michael@0 | 9 | * will eventually be removed when nsIDownloadManager will not be available |
| michael@0 | 10 | * anymore (bug 851471). |
| michael@0 | 11 | */ |
| michael@0 | 12 | |
| michael@0 | 13 | "use strict"; |
| michael@0 | 14 | |
| michael@0 | 15 | //////////////////////////////////////////////////////////////////////////////// |
| michael@0 | 16 | //// Globals |
| michael@0 | 17 | |
| michael@0 | 18 | const Cc = Components.classes; |
| michael@0 | 19 | const Ci = Components.interfaces; |
| michael@0 | 20 | const Cu = Components.utils; |
| michael@0 | 21 | const Cr = Components.results; |
| michael@0 | 22 | |
| michael@0 | 23 | Cu.import("resource://gre/modules/XPCOMUtils.jsm"); |
| michael@0 | 24 | |
| michael@0 | 25 | /** |
| michael@0 | 26 | * CID and Contract ID of our implementation of nsIDownloadManagerUI. |
| michael@0 | 27 | */ |
| michael@0 | 28 | const kDownloadsUICid = Components.ID("{4d99321e-d156-455b-81f7-e7aa2308134f}"); |
| michael@0 | 29 | const kDownloadsUIContractId = "@mozilla.org/download-manager-ui;1"; |
| michael@0 | 30 | |
| michael@0 | 31 | /** |
| michael@0 | 32 | * CID and Contract ID of the JavaScript implementation of nsITransfer. |
| michael@0 | 33 | */ |
| michael@0 | 34 | const kTransferCid = Components.ID("{1b4c85df-cbdd-4bb6-b04e-613caece083c}"); |
| michael@0 | 35 | const kTransferContractId = "@mozilla.org/transfer;1"; |
| michael@0 | 36 | |
| michael@0 | 37 | //////////////////////////////////////////////////////////////////////////////// |
| michael@0 | 38 | //// DownloadsStartup |
| michael@0 | 39 | |
| michael@0 | 40 | function DownloadsStartup() { } |
| michael@0 | 41 | |
| michael@0 | 42 | DownloadsStartup.prototype = { |
| michael@0 | 43 | classID: Components.ID("{49507fe5-2cee-4824-b6a3-e999150ce9b8}"), |
| michael@0 | 44 | |
| michael@0 | 45 | _xpcom_factory: XPCOMUtils.generateSingletonFactory(DownloadsStartup), |
| michael@0 | 46 | |
| michael@0 | 47 | ////////////////////////////////////////////////////////////////////////////// |
| michael@0 | 48 | //// nsISupports |
| michael@0 | 49 | |
| michael@0 | 50 | QueryInterface: XPCOMUtils.generateQI([Ci.nsIObserver]), |
| michael@0 | 51 | |
| michael@0 | 52 | ////////////////////////////////////////////////////////////////////////////// |
| michael@0 | 53 | //// nsIObserver |
| michael@0 | 54 | |
| michael@0 | 55 | observe: function DS_observe(aSubject, aTopic, aData) |
| michael@0 | 56 | { |
| michael@0 | 57 | if (aTopic != "profile-after-change") { |
| michael@0 | 58 | Cu.reportError("Unexpected observer notification."); |
| michael@0 | 59 | return; |
| michael@0 | 60 | } |
| michael@0 | 61 | |
| michael@0 | 62 | // Override Toolkit's nsIDownloadManagerUI implementation with our own. |
| michael@0 | 63 | // This must be done at application startup and not in the manifest to |
| michael@0 | 64 | // ensure that our implementation overrides the original one. |
| michael@0 | 65 | Components.manager.QueryInterface(Ci.nsIComponentRegistrar) |
| michael@0 | 66 | .registerFactory(kDownloadsUICid, "", |
| michael@0 | 67 | kDownloadsUIContractId, null); |
| michael@0 | 68 | |
| michael@0 | 69 | // Override Toolkit's nsITransfer implementation with the one from the |
| michael@0 | 70 | // JavaScript API for downloads. |
| michael@0 | 71 | Components.manager.QueryInterface(Ci.nsIComponentRegistrar) |
| michael@0 | 72 | .registerFactory(kTransferCid, "", |
| michael@0 | 73 | kTransferContractId, null); |
| michael@0 | 74 | }, |
| michael@0 | 75 | }; |
| michael@0 | 76 | |
| michael@0 | 77 | //////////////////////////////////////////////////////////////////////////////// |
| michael@0 | 78 | //// Module |
| michael@0 | 79 | |
| michael@0 | 80 | this.NSGetFactory = XPCOMUtils.generateNSGetFactory([DownloadsStartup]); |
