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// 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 "ash/desktop_background/desktop_background_controller.h"
#include "extensions/browser/extension_function.h"
#include "ui/gfx/image/image_skia.h"
namespace wallpaper_api_util {
extern const char kCancelWallpaperMessage[];
ash::WallpaperLayout GetLayoutEnum(const std::string& layout);
} // namespace wallpaper_api_util
// Wallpaper manager function base. It contains a image decoder to decode
// wallpaper data.
class WallpaperFunctionBase : public AsyncExtensionFunction {
public:
WallpaperFunctionBase();
protected:
virtual ~WallpaperFunctionBase();
// 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::string& 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_
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