Issue 3269 - Display uninstallation page when uninstalled

lib/uninstall.js

+/*
+ * This file is part of Adblock Plus <https://adblockplus.org/>,
+ * Copyright (C) 2006-2015 Eyeo GmbH
+ *
+ * Adblock Plus is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 3 as
+ * published by the Free Software Foundation.
+ *
+ * Adblock Plus is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with Adblock Plus.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/** @module uninstall */
+
+let info = require("info");
+let {Prefs} = require("prefs");
+let {Utils} = require("utils");
+
+function setUninstallURL()
+{
+  let search = [];
+  let keys = ["addonName", "addonVersion", "application", "applicationVersion",
+              "platform", "platformVersion"];
+  for (let key of keys)
+    search.push(key + "=" + encodeURIComponent(info[key]));
+
+  let downlCount = Prefs.notificationdata.downloadCount || 0;
+  search.push("notificationDownloadCount=" + encodeURIComponent(downlCount));
+
+  chrome.runtime.setUninstallURL(Utils.getDocLink("uninstalled") + "&" +
+                                 search.join("&"));
+}
+
+function onPrefsLoaded()
+{
+  Prefs.onLoaded.removeListener(onPrefsLoaded);
+  setUninstallURL();
+}
+
+// The uninstall URL contains the notification download count as a parameter,
+// therefore we must wait for preferences to be loaded before generating the
+// URL and we need to re-generate it each time the notification data changes.
+if ("setUninstallURL" in chrome.runtime)
+{
+  Prefs.onLoaded.addListener(onPrefsLoaded);
+  Prefs.onChanged.addListener(function(name)
+  {
+    if (name == "notificationdata")
+      setUninstallURL();
+  });
+}