chrome/browser/extensions/external_provider_impl.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_EXTENSIONS_EXTERNAL_PROVIDER_IMPL_H_
   6 #define CHROME_BROWSER_EXTENSIONS_EXTERNAL_PROVIDER_IMPL_H_
   7
   8 #include <string>
   9
  10 #include "base/memory/ref_counted.h"
  11 #include "chrome/browser/extensions/external_loader.h"
  12 #include "extensions/browser/external_provider_interface.h"
  13 #include "extensions/common/manifest.h"
  14
  15 class Profile;
  16
  17 namespace base {
  18 class DictionaryValue;
  19 class Version;
  20 }
  21
  22 namespace extensions {
  23
  24 // A specialization of the ExternalProvider that uses an instance of
  25 // ExternalLoader to provide external extensions. This class can be seen as a
  26 // bridge between the extension system and an ExternalLoader. Instances live
  27 // their entire life on the UI thread.
  28 class ExternalProviderImpl : public ExternalProviderInterface {
  29  public:
  30   // The constructed provider will provide the extensions loaded from |loader|
  31   // to |service|, that will deal with the installation. The location
  32   // attributes of the provided extensions are also specified here:
  33   // |crx_location|: extensions originating from crx files
  34   // |download_location|: extensions originating from update URLs
  35   // If either of the origins is not supported by this provider, then it should
  36   // be initialized as Manifest::INVALID_LOCATION.
  37   ExternalProviderImpl(VisitorInterface* service,
  38                        const scoped_refptr<ExternalLoader>& loader,
  39                        Profile* profile,
  40                        Manifest::Location crx_location,
  41                        Manifest::Location download_location,
  42                        int creation_flags);
  43
  44   virtual ~ExternalProviderImpl();
  45
  46   // Populates a list with providers for all known sources.
  47   static void CreateExternalProviders(
  48       VisitorInterface* service,
  49       Profile* profile,
  50       ProviderCollection* provider_list);
  51
  52   // Sets underlying prefs and notifies provider. Only to be called by the
  53   // owned ExternalLoader instance.
  54   virtual void SetPrefs(base::DictionaryValue* prefs);
  55
  56   // ExternalProvider implementation:
  57   virtual void ServiceShutdown() OVERRIDE;
  58   virtual void VisitRegisteredExtension() OVERRIDE;
  59   virtual bool HasExtension(const std::string& id) const OVERRIDE;
  60   virtual bool GetExtensionDetails(
  61       const std::string& id,
  62       Manifest::Location* location,
  63       scoped_ptr<base::Version>* version) const OVERRIDE;
  64
  65   virtual bool IsReady() const OVERRIDE;
  66
  67   static const char kExternalCrx[];
  68   static const char kExternalVersion[];
  69   static const char kExternalUpdateUrl[];
  70   static const char kSupportedLocales[];
  71   static const char kIsBookmarkApp[];
  72   static const char kIsFromWebstore[];
  73   static const char kKeepIfPresent[];
  74
  75   void set_auto_acknowledge(bool auto_acknowledge) {
  76     auto_acknowledge_ = auto_acknowledge;
  77   }
  78
  79  private:
  80   // Location for external extensions that are provided by this provider from
  81   // local crx files.
  82   const Manifest::Location crx_location_;
  83
  84   // Location for external extensions that are provided by this provider from
  85   // update URLs.
  86   const Manifest::Location download_location_;
  87
  88   // Weak pointer to the object that consumes the external extensions.
  89   // This is zeroed out by: ServiceShutdown()
  90   VisitorInterface* service_;  // weak
  91
  92   // Dictionary of the external extensions that are provided by this provider.
  93   scoped_ptr<base::DictionaryValue> prefs_;
  94
  95   // Indicates that the extensions provided by this provider are loaded
  96   // entirely.
  97   bool ready_;
  98
  99   // The loader that loads the list of external extensions and reports them
 100   // via |SetPrefs|.
 101   scoped_refptr<ExternalLoader> loader_;
 102
 103   // The profile that will be used to install external extensions.
 104   Profile* profile_;
 105
 106   // Creation flags to use for the extension.  These flags will be used
 107   // when calling Extension::Create() by the crx installer.
 108   int creation_flags_;
 109
 110   // Whether loaded extensions should be automatically acknowledged, so that
 111   // the user doesn't see an alert about them.
 112   bool auto_acknowledge_;
 113
 114   DISALLOW_COPY_AND_ASSIGN(ExternalProviderImpl);
 115 };
 116
 117 }  // namespace extensions
 118
 119 #endif  // CHROME_BROWSER_EXTENSIONS_EXTERNAL_PROVIDER_IMPL_H_