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_FUNCTION_BASE_H_ 6 #define CHROME_BROWSER_CHROMEOS_EXTENSIONS_WALLPAPER_FUNCTION_BASE_H_ 7 8 #include "ash/desktop_background/desktop_background_controller.h" 9 #include "extensions/browser/extension_function.h" 10 #include "ui/gfx/image/image_skia.h" 11 12 namespace wallpaper_api_util { 13 ash::WallpaperLayout GetLayoutEnum(const std::string& layout); 14 } // namespace wallpaper_api_util 15 16 // Wallpaper manager function base. It contains a image decoder to decode 17 // wallpaper data. 18 class WallpaperFunctionBase : public AsyncExtensionFunction { 19 public: 20 WallpaperFunctionBase(); 21 22 protected: 23 virtual ~WallpaperFunctionBase(); 24 25 // A class to decode JPEG file. 26 class UnsafeWallpaperDecoder; 27 28 // Holds an instance of WallpaperDecoder. 29 static UnsafeWallpaperDecoder* unsafe_wallpaper_decoder_; 30 31 // Starts to decode |data|. Must run on UI thread. 32 void StartDecode(const std::string& data); 33 34 // Handles cancel case. No error message should be set. 35 void OnCancel(); 36 37 // Handles failure case. Sets error message. 38 void OnFailure(const std::string& error); 39 40 private: 41 virtual void OnWallpaperDecoded(const gfx::ImageSkia& wallpaper) = 0; 42 }; 43 44 #endif // CHROME_BROWSER_CHROMEOS_EXTENSIONS_WALLPAPER_FUNCTION_BASE_H_ 45