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      1 // Copyright (c) 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_EXTENSIONS_APP_ICON_LOADER_IMPL_H_
      6 #define CHROME_BROWSER_EXTENSIONS_APP_ICON_LOADER_IMPL_H_
      7 
      8 #include <map>
      9 #include <string>
     10 
     11 #include "chrome/browser/extensions/app_icon_loader.h"
     12 #include "extensions/browser/extension_icon_image.h"
     13 
     14 class Profile;
     15 
     16 namespace extensions {
     17 class Extension;
     18 
     19 // Default implementation of ash::AppIconLoader that interacts with the
     20 // ExtensionService and ImageLoader to load images.
     21 class AppIconLoaderImpl : public AppIconLoader,
     22                           public extensions::IconImage::Observer {
     23  public:
     24   AppIconLoaderImpl(Profile* profile, int icon_size,
     25                     AppIconLoader::Delegate* delegate);
     26   virtual ~AppIconLoaderImpl();
     27 
     28   // AppIconLoader overrides:
     29   virtual void FetchImage(const std::string& id) OVERRIDE;
     30   virtual void ClearImage(const std::string& id) OVERRIDE;
     31   virtual void UpdateImage(const std::string& id) OVERRIDE;
     32 
     33   // extensions::IconImage::Observer overrides:
     34   virtual void OnExtensionIconImageChanged(
     35       extensions::IconImage* image) OVERRIDE;
     36 
     37  private:
     38   typedef std::map<extensions::IconImage*, std::string> ImageToExtensionIDMap;
     39 
     40   // Builds image for given |id| and |icon|.
     41   void BuildImage(const std::string& id, const gfx::ImageSkia& icon);
     42 
     43   Profile* profile_;
     44 
     45   // The delegate object which receives the icon images. No ownership.
     46   AppIconLoader::Delegate* delegate_;
     47 
     48   // Maps from IconImage pointer to the extension id.
     49   ImageToExtensionIDMap map_;
     50 
     51   const int icon_size_;
     52 
     53   DISALLOW_COPY_AND_ASSIGN(AppIconLoaderImpl);
     54 };
     55 
     56 }  // namespace extensions
     57 
     58 #endif  // CHROME_BROWSER_EXTENSIONS_APP_ICON_LOADER_IMPL_H_
     59