1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 #ifndef CHROME_BROWSER_EXTENSIONS_EXTERNAL_POLICY_LOADER_H_ 6 #define CHROME_BROWSER_EXTENSIONS_EXTERNAL_POLICY_LOADER_H_ 7 8 #include <string> 9 10 #include "base/compiler_specific.h" 11 #include "base/prefs/pref_change_registrar.h" 12 #include "chrome/browser/extensions/external_loader.h" 13 #include "content/public/browser/notification_observer.h" 14 #include "content/public/browser/notification_registrar.h" 15 16 class Profile; 17 18 namespace base { 19 class DictionaryValue; 20 } 21 22 namespace extensions { 23 24 // A specialization of the ExternalProvider that uses 25 // pref_names::kInstallForceList to look up which external extensions are 26 // registered. 27 class ExternalPolicyLoader 28 : public ExternalLoader, 29 public content::NotificationObserver { 30 public: 31 explicit ExternalPolicyLoader(Profile* profile); 32 33 // content::NotificationObserver implementation 34 virtual void Observe(int type, 35 const content::NotificationSource& source, 36 const content::NotificationDetails& details) OVERRIDE; 37 38 // Adds an extension to be updated to the pref dictionary. 39 static void AddExtension(base::DictionaryValue* dict, 40 const std::string& extension_id, 41 const std::string& update_url); 42 43 protected: 44 virtual void StartLoading() OVERRIDE; 45 46 private: 47 friend class base::RefCountedThreadSafe<ExternalLoader>; 48 ~ExternalPolicyLoader()49 virtual ~ExternalPolicyLoader() {} 50 51 PrefChangeRegistrar pref_change_registrar_; 52 content::NotificationRegistrar notification_registrar_; 53 54 Profile* profile_; 55 56 DISALLOW_COPY_AND_ASSIGN(ExternalPolicyLoader); 57 }; 58 59 } // namespace extensions 60 61 #endif // CHROME_BROWSER_EXTENSIONS_EXTERNAL_POLICY_LOADER_H_ 62