| // 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. |
| |
| #ifndef CHROME_BROWSER_CHROMEOS_POLICY_APP_PACK_UPDATER_H_ |
| #define CHROME_BROWSER_CHROMEOS_POLICY_APP_PACK_UPDATER_H_ |
| |
| #include <string> |
| |
| #include "base/basictypes.h" |
| #include "base/callback.h" |
| #include "base/compiler_specific.h" |
| #include "base/files/file_path.h" |
| #include "base/memory/scoped_ptr.h" |
| #include "base/memory/weak_ptr.h" |
| #include "chrome/browser/chromeos/extensions/external_cache.h" |
| #include "chrome/browser/chromeos/settings/cros_settings.h" |
| |
| namespace extensions { |
| class ExternalLoader; |
| } |
| |
| namespace net { |
| class URLRequestContextGetter; |
| } |
| |
| namespace policy { |
| |
| class AppPackExternalLoader; |
| class EnterpriseInstallAttributes; |
| |
| // The AppPackUpdater manages a set of extensions that are configured via a |
| // device policy to be locally cached and installed into the Demo user account |
| // at login time. |
| class AppPackUpdater : public chromeos::ExternalCache::Delegate { |
| public: |
| // Callback to listen for updates to the screensaver extension's path. |
| typedef base::Callback<void(const base::FilePath&)> ScreenSaverUpdateCallback; |
| |
| // The |request_context| is used for the update checks. |
| AppPackUpdater(net::URLRequestContextGetter* request_context, |
| EnterpriseInstallAttributes* install_attributes); |
| virtual ~AppPackUpdater(); |
| |
| // Returns true if the ExternalLoader for the app pack has already been |
| // created. |
| bool created_external_loader() const { return created_extension_loader_; } |
| |
| // Creates an extensions::ExternalLoader that will load the crx files |
| // downloaded by the AppPackUpdater. This can be called at most once, and the |
| // caller owns the returned value. |
| extensions::ExternalLoader* CreateExternalLoader(); |
| |
| // |callback| will be invoked whenever the screen saver extension's path |
| // changes. It will be invoked "soon" after this call if a valid path already |
| // exists. Subsequent calls will override the previous |callback|. A null |
| // |callback| can be used to remove a previous callback. |
| void SetScreenSaverUpdateCallback(const ScreenSaverUpdateCallback& callback); |
| |
| // If a user of one of the AppPack's extensions detects that the extension |
| // is damaged then this method can be used to remove it from the cache and |
| // retry to download it after a restart. |
| void OnDamagedFileDetected(const base::FilePath& path); |
| |
| private: |
| // Implementation of ExternalCache::Delegate: |
| virtual void OnExtensionListsUpdated( |
| const base::DictionaryValue* prefs) override; |
| |
| // Called when the app pack device setting changes. |
| void AppPackChanged(); |
| |
| // Loads the current policy and schedules a cache update. |
| void LoadPolicy(); |
| |
| // Notifies the |extension_loader_| that the cache has been updated, providing |
| // it with an updated list of app-pack extensions. |
| void UpdateExtensionLoader(); |
| |
| // Sets |screen_saver_path_| and invokes |screen_saver_update_callback_| if |
| // appropriate. |
| void SetScreenSaverPath(const base::FilePath& path); |
| |
| // The extension ID and path of the CRX file of the screen saver extension, |
| // if it is configured by the policy. Otherwise these fields are empty. |
| std::string screen_saver_id_; |
| base::FilePath screen_saver_path_; |
| |
| // Callback to invoke whenever the screen saver's extension path changes. |
| // Can be null. |
| ScreenSaverUpdateCallback screen_saver_update_callback_; |
| |
| // The extension loader wires the AppPackUpdater to the extensions system, and |
| // makes it install the currently cached extensions. |
| bool created_extension_loader_; |
| base::WeakPtr<AppPackExternalLoader> extension_loader_; |
| |
| // For checking the device mode. |
| EnterpriseInstallAttributes* install_attributes_; |
| |
| // Extension cache. |
| chromeos::ExternalCache external_cache_; |
| |
| scoped_ptr<chromeos::CrosSettings::ObserverSubscription> |
| app_pack_subscription_; |
| |
| base::WeakPtrFactory<AppPackUpdater> weak_ptr_factory_; |
| |
| DISALLOW_COPY_AND_ASSIGN(AppPackUpdater); |
| }; |
| |
| } // namespace policy |
| |
| #endif // CHROME_BROWSER_CHROMEOS_POLICY_APP_PACK_UPDATER_H_ |