src/chrome/browser/thumbnails/thumbnail_service_factory.h

   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_THUMBNAILS_THUMBNAIL_SERVICE_FACTORY_H_
   6 #define CHROME_BROWSER_THUMBNAILS_THUMBNAIL_SERVICE_FACTORY_H_
   7
   8 #include "base/memory/ref_counted.h"
   9 #include "base/memory/singleton.h"
  10 #include "components/keyed_service/content/refcounted_browser_context_keyed_service_factory.h"
  11
  12 class Profile;
  13
  14 namespace thumbnails {
  15 class ThumbnailService;
  16 }
  17
  18 class ThumbnailServiceFactory
  19     : public RefcountedBrowserContextKeyedServiceFactory {
  20  public:
  21   // Returns an instance of ThumbnailService associated with this profile
  22   // (creating one if none exists). Returns NULL if this profile cannot have a
  23   // ThumbnailService (for example, if |profile| is incognito).
  24   // Depending on the settings, the implementation of the service interface
  25   // can be provided either by TopSites (stored in the profile itself) or
  26   // be an instance of a real RefcountedKeyedService
  27   // implementation.
  28   static scoped_refptr<thumbnails::ThumbnailService> GetForProfile(
  29       Profile* profile);
  30
  31   static ThumbnailServiceFactory* GetInstance();
  32
  33  private:
  34   friend struct DefaultSingletonTraits<ThumbnailServiceFactory>;
  35
  36   ThumbnailServiceFactory();
  37   ~ThumbnailServiceFactory() override;
  38
  39   // BrowserContextKeyedServiceFactory:
  40   scoped_refptr<RefcountedKeyedService> BuildServiceInstanceFor(
  41       content::BrowserContext* profile) const override;
  42
  43   DISALLOW_COPY_AND_ASSIGN(ThumbnailServiceFactory);
  44 };
  45
  46 #endif  // CHROME_BROWSER_THUMBNAILS_THUMBNAIL_SERVICE_FACTORY_H_