chrome/browser/extensions/signin/gaia_auth_extension_loader.h

   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_SIGNIN_GAIA_AUTH_EXTENSION_LOADER_H_
   6 #define CHROME_BROWSER_EXTENSIONS_SIGNIN_GAIA_AUTH_EXTENSION_LOADER_H_
   7
   8 #include "base/memory/scoped_ptr.h"
   9 #include "extensions/browser/browser_context_keyed_api_factory.h"
  10
  11 namespace content {
  12 class BrowserContext;
  13 }
  14
  15 namespace extensions {
  16
  17 // Manages and registers the gaia auth extension with the extension system.
  18 class GaiaAuthExtensionLoader : public BrowserContextKeyedAPI {
  19  public:
  20   explicit GaiaAuthExtensionLoader(content::BrowserContext* context);
  21   virtual ~GaiaAuthExtensionLoader();
  22
  23   // Load the gaia auth extension if the extension is not loaded yet.
  24   void LoadIfNeeded();
  25   // Unload the gaia auth extension if no pending reference.
  26   void UnloadIfNeeded();
  27
  28   static GaiaAuthExtensionLoader* Get(content::BrowserContext* context);
  29
  30   // BrowserContextKeyedAPI implementation.
  31   static BrowserContextKeyedAPIFactory<GaiaAuthExtensionLoader>*
  32       GetFactoryInstance();
  33
  34  private:
  35   friend class BrowserContextKeyedAPIFactory<GaiaAuthExtensionLoader>;
  36
  37   // KeyedService overrides:
  38   virtual void Shutdown() OVERRIDE;
  39
  40   // BrowserContextKeyedAPI implementation.
  41   static const char* service_name() {
  42     return "GaiaAuthExtensionLoader";
  43   }
  44   static const bool kServiceRedirectedInIncognito = true;
  45
  46   content::BrowserContext* browser_context_;
  47   int load_count_;
  48
  49   DISALLOW_COPY_AND_ASSIGN(GaiaAuthExtensionLoader);
  50 };
  51
  52 } // namespace extensions
  53
  54 #endif  // CHROME_BROWSER_EXTENSIONS_SIGNIN_GAIA_AUTH_EXTENSION_LOADER_H_