chrome/browser/extensions/api/developer_private/extension_info_generator.h

   1 // Copyright 2015 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_API_DEVELOPER_PRIVATE_EXTENSION_INFO_GENERATOR_H_
   6 #define CHROME_BROWSER_EXTENSIONS_API_DEVELOPER_PRIVATE_EXTENSION_INFO_GENERATOR_H_
   7
   8 #include "base/callback.h"
   9 #include "base/memory/linked_ptr.h"
  10 #include "base/memory/weak_ptr.h"
  11 #include "chrome/common/extensions/api/developer_private.h"
  12
  13 namespace content {
  14 class BrowserContext;
  15 }
  16
  17 namespace gfx {
  18 class Image;
  19 }
  20
  21 namespace extensions {
  22 class CommandService;
  23 class ErrorConsole;
  24 class Extension;
  25 class ExtensionActionAPI;
  26 class ExtensionPrefs;
  27 class ExtensionSystem;
  28 class ImageLoader;
  29 class WarningService;
  30
  31 // Generates the developerPrivate api's specification for ExtensionInfo.
  32 // This class is designed to only have one generation running at a time!
  33 class ExtensionInfoGenerator {
  34  public:
  35   using ExtensionInfoList =
  36       std::vector<linked_ptr<api::developer_private::ExtensionInfo>>;
  37
  38   using ExtensionInfosCallback = base::Callback<void(const ExtensionInfoList&)>;
  39
  40   explicit ExtensionInfoGenerator(content::BrowserContext* context);
  41   ~ExtensionInfoGenerator();
  42
  43   // Creates and asynchronously returns an ExtensionInfo for the given
  44   // |extension_id|, if the extension can be found.
  45   // If the extension cannot be found, an empty vector is passed to |callback|.
  46   void CreateExtensionInfo(const std::string& id,
  47                            const ExtensionInfosCallback& callback);
  48
  49   // Creates and asynchronously returns a collection of ExtensionInfos,
  50   // optionally including disabled and terminated.
  51   void CreateExtensionsInfo(bool include_disabled,
  52                             bool include_terminated,
  53                             const ExtensionInfosCallback& callback);
  54
  55  private:
  56   // Creates an ExtensionInfo for the given |extension| and |state|, and
  57   // asynchronously adds it to the |list|.
  58   void CreateExtensionInfoHelper(const Extension& extension,
  59                                  api::developer_private::ExtensionState state);
  60
  61   // Callback for the asynchronous image loading.
  62   void OnImageLoaded(scoped_ptr<api::developer_private::ExtensionInfo> info,
  63                      const gfx::Image& image);
  64
  65   // Returns the icon url for the default icon to use.
  66   const std::string& GetDefaultIconUrl(bool is_app, bool is_disabled);
  67
  68   // Returns an icon url from the given image, optionally applying a greyscale.
  69   std::string GetIconUrlFromImage(const gfx::Image& image,
  70                                   bool should_greyscale);
  71
  72   // Various systems, cached for convenience.
  73   content::BrowserContext* browser_context_;
  74   CommandService* command_service_;
  75   ExtensionSystem* extension_system_;
  76   ExtensionPrefs* extension_prefs_;
  77   ExtensionActionAPI* extension_action_api_;
  78   WarningService* warning_service_;
  79   ErrorConsole* error_console_;
  80   ImageLoader* image_loader_;
  81
  82   // The number of pending image loads.
  83   size_t pending_image_loads_;
  84
  85   // Default icons, cached and lazily initialized.
  86   std::string default_app_icon_url_;
  87   std::string default_extension_icon_url_;
  88   std::string default_disabled_app_icon_url_;
  89   std::string default_disabled_extension_icon_url_;
  90
  91   // The list of extension infos that have been generated.
  92   ExtensionInfoList list_;
  93
  94   // The callback to run once all infos have been created.
  95   ExtensionInfosCallback callback_;
  96
  97   base::WeakPtrFactory<ExtensionInfoGenerator> weak_factory_;
  98
  99   DISALLOW_COPY_AND_ASSIGN(ExtensionInfoGenerator);
 100 };
 101
 102 }  // namespace extensions
 103
 104 #endif  // CHROME_BROWSER_EXTENSIONS_API_DEVELOPER_PRIVATE_EXTENSION_INFO_GENERATOR_H_