kiosk: Retry failed app data fetch.

chrome/browser/ui/webui/chromeos/login/kiosk_app_menu_handler.h

 // Copyright 2013 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.
 
 #ifndef CHROME_BROWSER_UI_WEBUI_CHROMEOS_LOGIN_KIOSK_APP_MENU_HANDLER_H_
 #define CHROME_BROWSER_UI_WEBUI_CHROMEOS_LOGIN_KIOSK_APP_MENU_HANDLER_H_
 
 #include <string>
 
 #include "base/compiler_specific.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/memory/weak_ptr.h"
 #include "chrome/browser/chromeos/app_mode/kiosk_app_manager.h"
 #include "chrome/browser/chromeos/app_mode/kiosk_app_manager_observer.h"
+#include "chrome/browser/ui/webui/chromeos/login/network_state_informer.h"
 #include "content/public/browser/web_ui_message_handler.h"
 
 namespace chromeos {
 
 // KioskAppMenuHandler supplies kiosk apps data to apps menu on sign-in
 // screen when app mode is enabled and handles "launchKioskApp" request
 // from the apps menu.
-class KioskAppMenuHandler : public content::WebUIMessageHandler,
-                            public KioskAppManagerObserver {
+class KioskAppMenuHandler
+    : public content::WebUIMessageHandler,
+      public KioskAppManagerObserver,
+      public NetworkStateInformer::NetworkStateInformerObserver {
  public:
-  KioskAppMenuHandler();
+  explicit KioskAppMenuHandler(
+      const scoped_refptr<NetworkStateInformer>& network_state_informer);
   virtual ~KioskAppMenuHandler();
 
   void GetLocalizedStrings(base::DictionaryValue* localized_strings);
 
   // content::WebUIMessageHandler overrides:
   virtual void RegisterMessages() OVERRIDE;
 
   // Returns true if new kiosk UI is enabled.
   static bool EnableNewKioskUI();
 
  private:
   // Sends all kiosk apps to webui.
   void SendKioskApps();
 
   // JS callbacks.
   void HandleInitializeKioskApps(const base::ListValue* args);
   void HandleKioskAppsLoaded(const base::ListValue* args);
   void HandleCheckKioskAppLaunchError(const base::ListValue* args);
 
   // KioskAppManagerObserver overrides:
   virtual void OnKioskAppsSettingsChanged() OVERRIDE;
   virtual void OnKioskAppDataChanged(const std::string& app_id) OVERRIDE;
 
+  // NetworkStateInformer::NetworkStateInformerObserver overrides:
+  virtual void UpdateState(ErrorScreenActor::ErrorReason reason) OVERRIDE;
+
   base::WeakPtrFactory<KioskAppMenuHandler> weak_ptr_factory_;
 
   // True when WebUI is initialized. Otherwise don't allow calling JS functions.
   bool is_webui_initialized_;
 
+  scoped_refptr<NetworkStateInformer> network_state_informer_;
+
   DISALLOW_COPY_AND_ASSIGN(KioskAppMenuHandler);
 };
 
 }  // namespace chromeos
 
 #endif  // CHROME_BROWSER_UI_WEBUI_CHROMEOS_LOGIN_KIOSK_APP_MENU_HANDLER_H_