chrome/browser/chromeos/extensions/external_pref_cache_loader.h

   1 // Copyright (c) 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_CHROMEOS_EXTENSIONS_EXTERNAL_PREF_CACHE_LOADER_H_
   6 #define CHROME_BROWSER_CHROMEOS_EXTENSIONS_EXTERNAL_PREF_CACHE_LOADER_H_
   7
   8 #include "base/memory/ref_counted.h"
   9 #include "chrome/browser/extensions/external_pref_loader.h"
  10
  11 class Profile;
  12
  13 namespace chromeos {
  14
  15 class ExternalCacheDispatcher;
  16
  17 // A specialization of the ExternalPrefLoader that caches crx files for external
  18 // extensions with update URL in a common place for all users on the machine.
  19 class ExternalPrefCacheLoader : public extensions::ExternalPrefLoader {
  20  public:
  21   // All instances of ExternalPrefCacheLoader use the same cache so
  22   // |base_path_id| must be the same for all profile in session.
  23   // It is checked in run-time with CHECK. |profile| is used to check if the
  24   // extension is installed to keep providing.
  25   ExternalPrefCacheLoader(int base_path_id, Profile* profile);
  26
  27   void OnExtensionListsUpdated(const base::DictionaryValue* prefs);
  28
  29  private:
  30   friend class base::RefCountedThreadSafe<ExternalLoader>;
  31
  32   virtual ~ExternalPrefCacheLoader();
  33
  34   virtual void StartLoading() OVERRIDE;
  35   virtual void LoadFinished() OVERRIDE;
  36
  37   Profile* profile_;
  38   scoped_refptr<ExternalCacheDispatcher> cache_dispatcher_;
  39
  40   DISALLOW_COPY_AND_ASSIGN(ExternalPrefCacheLoader);
  41 };
  42
  43 }  // namespace chromeos
  44
  45 #endif  // CHROME_BROWSER_CHROMEOS_EXTENSIONS_EXTERNAL_PREF_CACHE_LOADER_H_