chrome/browser/chromeos/extensions/wallpaper_api.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_CHROMEOS_EXTENSIONS_WALLPAPER_API_H_
   6 #define CHROME_BROWSER_CHROMEOS_EXTENSIONS_WALLPAPER_API_H_
   7
   8 #include "base/threading/sequenced_worker_pool.h"
   9 #include "chrome/browser/chromeos/extensions/wallpaper_function_base.h"
  10 #include "chrome/common/extensions/api/wallpaper.h"
  11 #include "net/url_request/url_request_status.h"
  12
  13 // Implementation of chrome.wallpaper.setWallpaper API.
  14 // After this API being called, a jpeg encoded wallpaper will be saved to
  15 // /home/chronos/custom_wallpaper/{resolution}/{user_id_hash}/file_name. The
  16 // wallpaper can then persistent after Chrome restart. New call to this API
  17 // will replace the previous saved wallpaper with new one.
  18 // Note: For security reason, the original encoded wallpaper image is not saved
  19 // directly. It is decoded and re-encoded to jpeg format before saved to file
  20 // system.
  21 class WallpaperSetWallpaperFunction : public WallpaperFunctionBase {
  22  public:
  23   DECLARE_EXTENSION_FUNCTION("wallpaper.setWallpaper",
  24                              WALLPAPER_SETWALLPAPER)
  25
  26   WallpaperSetWallpaperFunction();
  27
  28  protected:
  29   ~WallpaperSetWallpaperFunction() override;
  30
  31   // AsyncExtensionFunction overrides.
  32   bool RunAsync() override;
  33
  34  private:
  35   void OnWallpaperDecoded(const gfx::ImageSkia& image) override;
  36
  37   // Generates thumbnail of custom wallpaper. A simple STRETCH is used for
  38   // generating thumbnail.
  39   void GenerateThumbnail(const base::FilePath& thumbnail_path,
  40                          scoped_ptr<gfx::ImageSkia> image);
  41
  42   // Thumbnail is ready. Calls api function javascript callback.
  43   void ThumbnailGenerated(base::RefCountedBytes* data);
  44
  45   // Called by OnURLFetchComplete().
  46   void OnWallpaperFetched(bool success, const std::string& response);
  47
  48   scoped_ptr<extensions::api::wallpaper::SetWallpaper::Params> params_;
  49
  50   // Unique file name of the custom wallpaper.
  51   std::string file_name_;
  52
  53   // User id of the user who initiate this API call.
  54   std::string user_id_;
  55
  56   // User id hash of the logged in user.
  57   std::string user_id_hash_;
  58
  59   // Sequence token associated with wallpaper operations. Shared with
  60   // WallpaperManager.
  61   base::SequencedWorkerPool::SequenceToken sequence_token_;
  62 };
  63
  64 #endif  // CHROME_BROWSER_CHROMEOS_EXTENSIONS_WALLPAPER_API_H_
  65