|  | // Copyright (c) 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_EXTENSIONS_APP_ICON_LOADER_H_ | 
|  | #define CHROME_BROWSER_EXTENSIONS_APP_ICON_LOADER_H_ | 
|  |  | 
|  | #include <string> | 
|  |  | 
|  | #include "base/basictypes.h" | 
|  |  | 
|  | namespace gfx { | 
|  | class ImageSkia; | 
|  | } | 
|  |  | 
|  | namespace extensions { | 
|  |  | 
|  | // Interface used to load app icons. This is in its own class so that it can | 
|  | // be mocked. | 
|  | class AppIconLoader { | 
|  | public: | 
|  | class Delegate { | 
|  | public: | 
|  | virtual ~Delegate() {} | 
|  |  | 
|  | // Called when the image for an app is loaded. | 
|  | virtual void SetAppImage(const std::string& id, | 
|  | const gfx::ImageSkia& image) = 0; | 
|  | }; | 
|  |  | 
|  | AppIconLoader() {} | 
|  | virtual ~AppIconLoader() {} | 
|  |  | 
|  | // Fetches the image for the specified id. When done (which may be | 
|  | // synchronous), this should invoke SetAppImage() on the delegate. | 
|  | virtual void FetchImage(const std::string& id) = 0; | 
|  |  | 
|  | // Clears the image for the specified id. | 
|  | virtual void ClearImage(const std::string& id) = 0; | 
|  |  | 
|  | // Updates the image for the specified id. This is called to re-create | 
|  | // the app icon with latest app state (enabled or disabled/terminiated). | 
|  | // SetAppImage() is called when done. | 
|  | virtual void UpdateImage(const std::string& id) = 0; | 
|  |  | 
|  | private: | 
|  | DISALLOW_COPY_AND_ASSIGN(AppIconLoader); | 
|  | }; | 
|  |  | 
|  | }  // namespace extensions | 
|  |  | 
|  | #endif  // CHROME_BROWSER_EXTENSIONS_APP_ICON_LOADER_H_ |