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      1 // Copyright 2013 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_API_PREFERENCE_CHROME_DIRECT_SETTING_API_H__
      6 #define CHROME_BROWSER_EXTENSIONS_API_PREFERENCE_CHROME_DIRECT_SETTING_API_H__
      7 
      8 #include "base/prefs/pref_change_registrar.h"
      9 #include "extensions/browser/browser_context_keyed_api_factory.h"
     10 #include "extensions/browser/event_router.h"
     11 
     12 class Profile;
     13 
     14 namespace content {
     15 class BrowserContext;
     16 }
     17 
     18 namespace extensions {
     19 namespace chromedirectsetting {
     20 
     21 class ChromeDirectSettingAPI : public BrowserContextKeyedAPI,
     22                                public EventRouter::Observer {
     23  public:
     24   explicit ChromeDirectSettingAPI(content::BrowserContext* context);
     25 
     26   virtual ~ChromeDirectSettingAPI();
     27 
     28   // KeyedService implementation.
     29   virtual void Shutdown() OVERRIDE;
     30 
     31   // BrowserContextKeyedAPI implementation.
     32   static BrowserContextKeyedAPIFactory<ChromeDirectSettingAPI>*
     33       GetFactoryInstance();
     34 
     35   // EventRouter::Observer implementation.
     36   virtual void OnListenerAdded(const EventListenerInfo& details) OVERRIDE;
     37 
     38   // Returns true if the preference is on the whitelist.
     39   bool IsPreferenceOnWhitelist(const std::string& pref_key);
     40 
     41   // Convenience method to get the ChromeDirectSettingAPI for a profile.
     42   static ChromeDirectSettingAPI* Get(content::BrowserContext* context);
     43 
     44  private:
     45   friend class BrowserContextKeyedAPIFactory<ChromeDirectSettingAPI>;
     46 
     47   // BrowserContextKeyedAPI implementation.
     48   static const char* service_name();
     49 
     50   void OnPrefChanged(PrefService* pref_service, const std::string& pref_key);
     51 
     52   static const bool kServiceIsNULLWhileTesting = true;
     53   static const bool kServiceRedirectedInIncognito = false;
     54 
     55   PrefChangeRegistrar registrar_;
     56   Profile* profile_;
     57 
     58   DISALLOW_COPY_AND_ASSIGN(ChromeDirectSettingAPI);
     59 };
     60 
     61 }  // namespace chromedirectsetting
     62 }  // namespace extensions
     63 
     64 #endif  // CHROME_BROWSER_EXTENSIONS_API_PREFERENCE_CHROME_DIRECT_SETTING_API_H__
     65