gistfile1.diff

diff --git a/app/js/controller/list_controller.js b/app/js/controller/list_controller.js
index 7f4197c..762b3c3 100644
--- a/app/js/controller/list_controller.js
+++ b/app/js/controller/list_controller.js
@@ -6,6 +6,8 @@ import AppListView from 'js/view/app_list_view';
 import AddonListView from 'js/view/addon_list_view';
 import DetailsView from 'js/view/details_view';
 
+import { ActivityHandler } from 'js/lib/helpers';
+
 export default class ListController extends Controller {
   constructor() {
     this.installedApps = Object.create(null);
@@ -16,6 +18,8 @@ export default class ListController extends Controller {
     this.addonView = new AddonListView();
     this.detailsView = new DetailsView();
 
+    this.activityHandler = new ActivityHandler();
+
     this.tabsView.onTabChange(this.handleTabChange.bind(this));
     document.addEventListener('visibilitychange',
       this.refreshInstalledList.bind(this));
@@ -33,7 +37,7 @@ export default class ListController extends Controller {
 
   createListIfNeeded() {
     if (!this.alreadyCreated) {
-      this.tabsView.render();
+      this.tabsView.render({selected: 1});
       document.body.appendChild(this.tabsView.el);
       this.appView.render();
       document.body.appendChild(this.appView.el);
@@ -95,7 +99,7 @@ export default class ListController extends Controller {
   }
 
   handleTabChange(activeTab) {
-    if (activeTab === 'Apps') {
+    if (activeTab === 'apps') {
       this.appView.activate();
       this.addonView.deactivate();
     } else {
diff --git a/app/js/lib/helpers.js b/app/js/lib/helpers.js
index a41d428..1fe3037 100644
--- a/app/js/lib/helpers.js
+++ b/app/js/lib/helpers.js
@@ -49,3 +49,16 @@ export class ManifestHelper {
       (manifest1.type === 'privileged' && manifest2.type !== 'certified');
   }
 }
+
+export class ActivityHandler {
+  constructor() {
+    navigator.mozSetMessageHandler('activity', this.handleActivity.bind(this));
+  }
+
+  handleActivity(activity) {
+    var activitySource = activity.source;
+    if (activitySource.name !== 'install') {
+      return;
+    }
+  }
+}