extensions/browser/image_loader_factory.h

   1 // Copyright 2014 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 EXTENSIONS_BROWSER_IMAGE_LOADER_FACTORY_H_
   6 #define EXTENSIONS_BROWSER_IMAGE_LOADER_FACTORY_H_
   7
   8 #include "base/memory/singleton.h"
   9 #include "components/keyed_service/content/browser_context_keyed_service_factory.h"
  10
  11 namespace content {
  12 class BrowserContext;
  13 }
  14
  15 namespace extensions {
  16
  17 class ImageLoader;
  18
  19 // Singleton that owns all ImageLoaders and associates them with
  20 // BrowserContexts. Listens for the BrowserContext's destruction notification
  21 // and cleans up the associated ImageLoader. Uses the original BrowserContext
  22 // for incognito contexts.
  23 class ImageLoaderFactory : public BrowserContextKeyedServiceFactory {
  24  public:
  25   static ImageLoader* GetForBrowserContext(content::BrowserContext* context);
  26
  27   static ImageLoaderFactory* GetInstance();
  28
  29  private:
  30   friend struct base::DefaultSingletonTraits<ImageLoaderFactory>;
  31
  32   ImageLoaderFactory();
  33   ~ImageLoaderFactory() override;
  34
  35   // BrowserContextKeyedServiceFactory:
  36   KeyedService* BuildServiceInstanceFor(
  37       content::BrowserContext* context) const override;
  38   bool ServiceIsCreatedWithBrowserContext() const override;
  39   content::BrowserContext* GetBrowserContextToUse(
  40       content::BrowserContext* context) const override;
  41 };
  42
  43 }  // namespace extensions
  44
  45 #endif  // EXTENSIONS_BROWSER_IMAGE_LOADER_FACTORY_H_