| // Copyright 2014 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_CHROMEOS_APP_MODE_KIOSK_APP_EXTERNAL_LOADER_H_ |
| #define CHROME_BROWSER_CHROMEOS_APP_MODE_KIOSK_APP_EXTERNAL_LOADER_H_ |
| |
| #include <memory> |
| |
| #include "base/callback_forward.h" |
| #include "base/macros.h" |
| #include "base/memory/weak_ptr.h" |
| #include "chrome/browser/extensions/external_loader.h" |
| |
| namespace chromeos { |
| |
| // An extensions::ExternalLoader that loads apps and extensions for a kiosk |
| // session. It is used to either load primary kiosk app, or secondary kiosk |
| // apps (or extensions). Single instance cannot load both primary and secondary |
| // apps. |
| // It registers a callback with KioskAppManager that is called when the kiosk |
| // app information is updated - when run, the callback will finish extension |
| // load handled by |this|. |
| // Note that |this| might call extensions::ExternalLoader::OnUpdated(), because |
| // in certain cases kiosk app properties might get updated. |
| // This lives on the UI thread, even though it's ref counted as a subclass |
| // of |extensions::ExternalLoader|. |
| class KioskAppExternalLoader : public extensions::ExternalLoader { |
| public: |
| enum class AppClass { kPrimary, kSecondary }; |
| |
| explicit KioskAppExternalLoader(AppClass app_class); |
| |
| // extensions::ExternalLoader: |
| void StartLoading() override; |
| |
| protected: |
| ~KioskAppExternalLoader() override; |
| |
| private: |
| enum class State { kInitial, kLoading, kLoaded }; |
| |
| // Gets prefs describing appropriate set of external extensions (depending |
| // on the class of kiosk apps handled by |this|) from KioskAppManager. |
| std::unique_ptr<base::DictionaryValue> GetAppsPrefs(); |
| |
| // Registers callback for handling kiosk apps prefs changes. |
| void SetPrefsChangedHandler(base::RepeatingClosure handler); |
| |
| // If prefs for the set of kiosk apps handled by |this| are available, sends |
| // them to the external loader owner (using extensions::ExternalLoader |
| // interface). |
| void SendPrefsIfAvailable(); |
| |
| // The class of kiosk apps this external extensions loader handles. |
| const AppClass app_class_; |
| |
| State state_ = State::kInitial; |
| |
| base::WeakPtrFactory<KioskAppExternalLoader> weak_ptr_factory_{this}; |
| |
| DISALLOW_COPY_AND_ASSIGN(KioskAppExternalLoader); |
| }; |
| |
| } // namespace chromeos |
| |
| #endif // CHROME_BROWSER_CHROMEOS_APP_MODE_KIOSK_APP_EXTERNAL_LOADER_H_ |