| // Copyright 2013 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #ifndef CHROME_BROWSER_CHROMEOS_EXTENSIONS_WALLPAPER_FUNCTION_BASE_H_ |
| #define CHROME_BROWSER_CHROMEOS_EXTENSIONS_WALLPAPER_FUNCTION_BASE_H_ |
| |
| #include <string> |
| #include <vector> |
| |
| #include "components/wallpaper/wallpaper_info.h" |
| #include "extensions/browser/extension_function.h" |
| #include "ui/gfx/image/image_skia.h" |
| |
| namespace base { |
| class SequencedTaskRunner; |
| } |
| |
| namespace wallpaper_api_util { |
| |
| extern const char kCancelWallpaperMessage[]; |
| |
| wallpaper::WallpaperLayout GetLayoutEnum(const std::string& layout); |
| |
| // This is used to record the wallpaper layout when the user sets a custom |
| // wallpaper or changes the existing custom wallpaper's layout. |
| void RecordCustomWallpaperLayout(const wallpaper::WallpaperLayout& layout); |
| |
| } // namespace wallpaper_api_util |
| |
| // Wallpaper manager function base. It contains a image decoder to decode |
| // wallpaper data. |
| class WallpaperFunctionBase : public AsyncExtensionFunction { |
| public: |
| WallpaperFunctionBase(); |
| |
| // For tasks that are worth blocking shutdown, i.e. saving user's custom |
| // wallpaper. |
| static base::SequencedTaskRunner* GetBlockingTaskRunner(); |
| static base::SequencedTaskRunner* GetNonBlockingTaskRunner(); |
| |
| protected: |
| ~WallpaperFunctionBase() override; |
| |
| // A class to decode JPEG file. |
| class UnsafeWallpaperDecoder; |
| |
| // Holds an instance of WallpaperDecoder. |
| static UnsafeWallpaperDecoder* unsafe_wallpaper_decoder_; |
| |
| // Starts to decode |data|. Must run on UI thread. |
| void StartDecode(const std::vector<char>& data); |
| |
| // Handles cancel case. No error message should be set. |
| void OnCancel(); |
| |
| // Handles failure case. Sets error message. |
| void OnFailure(const std::string& error); |
| |
| private: |
| virtual void OnWallpaperDecoded(const gfx::ImageSkia& wallpaper) = 0; |
| }; |
| |
| #endif // CHROME_BROWSER_CHROMEOS_EXTENSIONS_WALLPAPER_FUNCTION_BASE_H_ |