toolkit/webapps/WebappsIconHelpers.js@6474c204b198 (annotated)
toolkit/webapps/WebappsIconHelpers.js
Wed, 31 Dec 2014 06:09:35 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Wed, 31 Dec 2014 06:09:35 +0100
- changeset 0
- 6474c204b198
- permissions
- -rw-r--r--
Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.
| michael@0 | 1 | /* This Source Code Form is subject to the terms of the Mozilla Public |
| michael@0 | 2 | * License, v. 2.0. If a copy of the MPL was not distributed with this file, |
| michael@0 | 3 | * You can obtain one at http://mozilla.org/MPL/2.0/. */ |
| michael@0 | 4 | |
| michael@0 | 5 | const DEFAULT_ICON_URL = "chrome://global/skin/icons/webapps-64.png"; |
| michael@0 | 6 | |
| michael@0 | 7 | /** |
| michael@0 | 8 | * This function receives a list of icon sizes |
| michael@0 | 9 | * and URLs and returns the url string for the biggest icon. |
| michael@0 | 10 | * |
| michael@0 | 11 | * @param aIcons An object where the keys are the icon sizes |
| michael@0 | 12 | * and the values are URL strings. E.g.: |
| michael@0 | 13 | * aIcons = { |
| michael@0 | 14 | * "16": "http://www.example.org/icon16.png", |
| michael@0 | 15 | * "32": "http://www.example.org/icon32.png" |
| michael@0 | 16 | * }; |
| michael@0 | 17 | * |
| michael@0 | 18 | * @returns the URL string for the largest specified icon |
| michael@0 | 19 | */ |
| michael@0 | 20 | function getBiggestIconURL(aIcons) { |
| michael@0 | 21 | if (!aIcons) { |
| michael@0 | 22 | return DEFAULT_ICON_URL; |
| michael@0 | 23 | } |
| michael@0 | 24 | |
| michael@0 | 25 | let iconSizes = Object.keys(aIcons); |
| michael@0 | 26 | if (iconSizes.length == 0) { |
| michael@0 | 27 | return DEFAULT_ICON_URL; |
| michael@0 | 28 | } |
| michael@0 | 29 | iconSizes.sort(function(a, b) a - b); |
| michael@0 | 30 | return aIcons[iconSizes.pop()]; |
| michael@0 | 31 | } |
| michael@0 | 32 | |
| michael@0 | 33 | // Download an icon using either a temp file or a pipe. |
| michael@0 | 34 | function downloadIcon(aIconURI) { |
| michael@0 | 35 | let deferred = Promise.defer(); |
| michael@0 | 36 | |
| michael@0 | 37 | let mimeService = Cc["@mozilla.org/mime;1"].getService(Ci.nsIMIMEService); |
| michael@0 | 38 | let mimeType; |
| michael@0 | 39 | try { |
| michael@0 | 40 | let tIndex = aIconURI.path.indexOf(";"); |
| michael@0 | 41 | if("data" == aIconURI.scheme && tIndex != -1) { |
| michael@0 | 42 | mimeType = aIconURI.path.substring(0, tIndex); |
| michael@0 | 43 | } else { |
| michael@0 | 44 | mimeType = mimeService.getTypeFromURI(aIconURI); |
| michael@0 | 45 | } |
| michael@0 | 46 | } catch(e) { |
| michael@0 | 47 | deferred.reject("Failed to determine icon MIME type: " + e); |
| michael@0 | 48 | return deferred.promise; |
| michael@0 | 49 | } |
| michael@0 | 50 | |
| michael@0 | 51 | function onIconDownloaded(aStatusCode, aIcon) { |
| michael@0 | 52 | if (Components.isSuccessCode(aStatusCode)) { |
| michael@0 | 53 | deferred.resolve([ mimeType, aIcon ]); |
| michael@0 | 54 | } else { |
| michael@0 | 55 | deferred.reject("Failure downloading icon: " + aStatusCode); |
| michael@0 | 56 | } |
| michael@0 | 57 | } |
| michael@0 | 58 | |
| michael@0 | 59 | try { |
| michael@0 | 60 | #ifdef XP_MACOSX |
| michael@0 | 61 | let downloadObserver = { |
| michael@0 | 62 | onDownloadComplete: function(downloader, request, cx, aStatus, file) { |
| michael@0 | 63 | onIconDownloaded(aStatus, file); |
| michael@0 | 64 | } |
| michael@0 | 65 | }; |
| michael@0 | 66 | |
| michael@0 | 67 | let tmpIcon = Services.dirsvc.get("TmpD", Ci.nsIFile); |
| michael@0 | 68 | tmpIcon.append("tmpicon." + mimeService.getPrimaryExtension(mimeType, "")); |
| michael@0 | 69 | tmpIcon.createUnique(Ci.nsIFile.NORMAL_FILE_TYPE, parseInt("666", 8)); |
| michael@0 | 70 | |
| michael@0 | 71 | let listener = Cc["@mozilla.org/network/downloader;1"] |
| michael@0 | 72 | .createInstance(Ci.nsIDownloader); |
| michael@0 | 73 | listener.init(downloadObserver, tmpIcon); |
| michael@0 | 74 | #else |
| michael@0 | 75 | let pipe = Cc["@mozilla.org/pipe;1"] |
| michael@0 | 76 | .createInstance(Ci.nsIPipe); |
| michael@0 | 77 | pipe.init(true, true, 0, 0xffffffff, null); |
| michael@0 | 78 | |
| michael@0 | 79 | let listener = Cc["@mozilla.org/network/simple-stream-listener;1"] |
| michael@0 | 80 | .createInstance(Ci.nsISimpleStreamListener); |
| michael@0 | 81 | listener.init(pipe.outputStream, { |
| michael@0 | 82 | onStartRequest: function() {}, |
| michael@0 | 83 | onStopRequest: function(aRequest, aContext, aStatusCode) { |
| michael@0 | 84 | pipe.outputStream.close(); |
| michael@0 | 85 | onIconDownloaded(aStatusCode, pipe.inputStream); |
| michael@0 | 86 | } |
| michael@0 | 87 | }); |
| michael@0 | 88 | #endif |
| michael@0 | 89 | |
| michael@0 | 90 | let channel = NetUtil.newChannel(aIconURI); |
| michael@0 | 91 | let { BadCertHandler } = Cu.import("resource://gre/modules/CertUtils.jsm", {}); |
| michael@0 | 92 | // Pass true to avoid optional redirect-cert-checking behavior. |
| michael@0 | 93 | channel.notificationCallbacks = new BadCertHandler(true); |
| michael@0 | 94 | |
| michael@0 | 95 | channel.asyncOpen(listener, null); |
| michael@0 | 96 | } catch(e) { |
| michael@0 | 97 | deferred.reject("Failure initiating download of icon: " + e); |
| michael@0 | 98 | } |
| michael@0 | 99 | |
| michael@0 | 100 | return deferred.promise; |
| michael@0 | 101 | } |
