Restart running apps when chrome restarts.

chrome/browser/extensions/app_restore_service.cc

Index: chrome/browser/extensions/app_restore_service.cc
diff --git a/chrome/browser/extensions/app_restore_service.cc b/chrome/browser/extensions/app_restore_service.cc
new file mode 100644
index 0000000000000000000000000000000000000000..c9afbfd8563be7d35bd13f6d14405874494ebe75
--- /dev/null
+++ b/chrome/browser/extensions/app_restore_service.cc
@@ -0,0 +1,107 @@
+// Copyright (c) 2012 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "chrome/browser/extensions/app_restore_service.h"
+
+#include "chrome/browser/extensions/api/app_runtime/app_runtime_api.h"
+#include "chrome/browser/extensions/event_router.h"
+#include "chrome/browser/extensions/extension_host.h"
+#include "chrome/browser/extensions/extension_service.h"
+#include "chrome/browser/extensions/extension_system.h"
+#include "chrome/browser/prefs/pref_service.h"
+#include "chrome/browser/prefs/scoped_user_pref_update.h"
+#include "chrome/common/extensions/extension.h"
+#include "chrome/common/chrome_notification_types.h"
+#include "chrome/common/pref_names.h"
+#include "content/public/browser/notification_details.h"
+#include "content/public/browser/notification_service.h"
+#include "content/public/browser/notification_types.h"
+
+namespace extensions {
+
+AppRestoreService::AppRestoreService(Profile* profile)
+    : profile_(profile) {
+  registrar_.Add(
+      this, chrome::NOTIFICATION_EXTENSION_HOST_DID_STOP_LOADING,
+      content::NotificationService::AllSources());
+  registrar_.Add(
+      this, chrome::NOTIFICATION_EXTENSION_HOST_DESTROYED,
+      content::NotificationService::AllSources());
+  registrar_.Add(
+      this, content::NOTIFICATION_APP_TERMINATING,
+      content::NotificationService::AllSources());
+}
+
+void AppRestoreService::RestoreApps() {
+  PrefService* prefs = profile_->GetPrefs();
+  ExtensionPrefs::ExtensionIds extension_ids(

[Mihai Parparita -not on Chrome, 2012/09/05 20:54:06]

You can also get the list of apps from the extension service
(ExtensionPrefs::GetExtensionsFrom is meant to be used before ExtensionService
is initialize, which isn't the case here).

[koz (OOO until 15th September), 2012/09/06 07:50:44]

Done.

+      ExtensionPrefs::GetExtensionsFrom(prefs));
+  ExtensionPrefs* extension_prefs =
+      ExtensionSystem::Get(profile_)->extension_service()->extension_prefs();
+
+  // TODO(koz): As event dispatch occurs asynchronously the order of windows
+  // created in response to the onRestarted event is not stable, which means
+  // that the alt-tab order of windows won't remain constant over restarts.
+  // This can be fixed by acking each event before dispatching the next one.
+  for (ExtensionPrefs::ExtensionIds::const_iterator it = extension_ids.begin();
+       it != extension_ids.end(); it++) {
+    if (extension_prefs->WasExtensionRunningLastSession(*it))
+      RestoreApp(*it);
+    else
+      extension_prefs->SetExtensionRunning(*it, false);
+  }
+}
+
+void AppRestoreService::Observe(int type,
+                                const content::NotificationSource& source,
+                                const content::NotificationDetails& details) {
+  switch (type) {
+    case chrome::NOTIFICATION_EXTENSION_HOST_DID_STOP_LOADING: {
+      extensions::ExtensionHost* host =

[Mihai Parparita -not on Chrome, 2012/09/05 20:54:06]

Now that you're in the extensions namespace you can drop the prefix here (and a
few other places in the file).

[koz (OOO until 15th September), 2012/09/06 07:50:44]

Done.

+          content::Details<extensions::ExtensionHost>(details).ptr();
+      if (host->extension()->is_platform_app()) {
+        RecordAppStart(host->extension()->id());
+      }
+      break;
+    }
+
+    case chrome::NOTIFICATION_EXTENSION_HOST_DESTROYED: {
+      extensions::ExtensionHost* host =
+          content::Details<extensions::ExtensionHost>(details).ptr();
+      if (host->extension()->is_platform_app()) {
+        RecordAppStop(host->extension()->id());
+      }
+      break;
+    }
+
+    case content::NOTIFICATION_APP_TERMINATING: {
+      // Stop listening to NOTIFICATION_EXTENSION_HOST_DESTROYED in particular
+      // as all extension hosts will be destroyed as a result of shutdown.
+      registrar_.RemoveAll();
+      break;
+    }
+  }
+}
+
+
+void AppRestoreService::RecordAppStart(const std::string& extension_id) {
+  ExtensionPrefs* extension_prefs =
+      ExtensionSystem::Get(profile_)->extension_service()->extension_prefs();
+  extension_prefs->SetExtensionRunning(extension_id, true);
+}
+
+void AppRestoreService::RecordAppStop(const std::string& extension_id) {
+  ExtensionPrefs* extension_prefs =
+      ExtensionSystem::Get(profile_)->extension_service()->extension_prefs();
+  extension_prefs->SetExtensionRunning(extension_id, false);
+}
+
+void AppRestoreService::RestoreApp(const std::string& extension_id) {
+  const extensions::Extension* extension =
+      extensions::ExtensionSystem::Get(profile_)->extension_service()->
+      extensions()->GetByID(extension_id);
+  extensions::AppEventRouter::DispatchOnRestartedEvent(profile_, extension);
+}
+
+}  // namespace extensions