diff -r 000000000000 -r 6474c204b198 webapprt/WebappManager.jsm
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/webapprt/WebappManager.jsm	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,100 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this file,
+ * You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+"use strict";
+
+this.EXPORTED_SYMBOLS = ["WebappManager"];
+
+let Cc = Components.classes;
+let Ci = Components.interfaces;
+let Cu = Components.utils;
+
+Cu.import("resource://gre/modules/XPCOMUtils.jsm");
+Cu.import("resource://gre/modules/Services.jsm");
+Cu.import("resource://gre/modules/Webapps.jsm");
+Cu.import("resource://gre/modules/AppsUtils.jsm");
+Cu.import("resource://gre/modules/NativeApp.jsm");
+Cu.import("resource://gre/modules/WebappOSUtils.jsm");
+Cu.import("resource://webapprt/modules/WebappRT.jsm");
+
+this.WebappManager = {
+  observe: function(subject, topic, data) {
+    data = JSON.parse(data);
+    data.mm = subject;
+
+    switch (topic) {
+      case "webapps-ask-install":
+        let chromeWin = Services.wm.getOuterWindowWithId(data.oid);
+        if (chromeWin)
+          this.doInstall(data, chromeWin);
+        break;
+      case "webapps-launch":
+        WebappOSUtils.launch(data);
+        break;
+      case "webapps-uninstall":
+        WebappOSUtils.uninstall(data);
+        break;
+    }
+  },
+
+  update: function(aApp, aManifest, aZipPath) {
+    let nativeApp = new NativeApp(aApp, aManifest,
+                                  WebappRT.config.app.categories,
+                                  WebappRT.config.registryDir);
+    nativeApp.prepareUpdate(aManifest, aZipPath);
+  },
+
+  doInstall: function(data, window) {
+    let jsonManifest = data.isPackage ? data.app.updateManifest : data.app.manifest;
+    let manifest = new ManifestHelper(jsonManifest, data.app.origin);
+    let name = manifest.name;
+    let bundle = Services.strings.createBundle("chrome://webapprt/locale/webapp.properties");
+
+    let choice = Services.prompt.confirmEx(
+      window,
+      bundle.formatStringFromName("webapps.install.title", [name], 1),
+      bundle.formatStringFromName("webapps.install.description", [name], 1),
+      // Set both buttons to strings with the cancel button being default
+      Ci.nsIPromptService.BUTTON_POS_1_DEFAULT |
+        Ci.nsIPromptService.BUTTON_TITLE_IS_STRING * Ci.nsIPromptService.BUTTON_POS_0 |
+        Ci.nsIPromptService.BUTTON_TITLE_IS_STRING * Ci.nsIPromptService.BUTTON_POS_1,
+      bundle.GetStringFromName("webapps.install.install"),
+      bundle.GetStringFromName("webapps.install.dontinstall"),
+      null,
+      null,
+      {});
+
+    // Perform the install if the user allows it
+    if (choice == 0) {
+      let nativeApp = new NativeApp(data.app, jsonManifest,
+                                    WebappRT.config.app.categories,
+                                    WebappRT.config.registryDir);
+      let localDir;
+      try {
+        localDir = nativeApp.createProfile();
+      } catch (ex) {
+        DOMApplicationRegistry.denyInstall(aData);
+        return;
+      }
+
+      DOMApplicationRegistry.confirmInstall(data, localDir,
+        function (aManifest, aZipPath) {
+          nativeApp.install(aManifest, aZipPath);
+        }
+      );
+    } else {
+      DOMApplicationRegistry.denyInstall(data);
+    }
+  },
+
+  QueryInterface: XPCOMUtils.generateQI([Ci.nsIObserver,
+                                         Ci.nsISupportsWeakReference])
+};
+
+Services.obs.addObserver(WebappManager, "webapps-ask-install", false);
+Services.obs.addObserver(WebappManager, "webapps-launch", false);
+Services.obs.addObserver(WebappManager, "webapps-uninstall", false);
+Services.obs.addObserver(WebappManager, "webapps-update", false);
+
+DOMApplicationRegistry.registerUpdateHandler(WebappManager.update);