Revert 227477 "Refactored loading of applications / extensions i..."

trunk/src/chrome/browser/ui/webui/extensions/extension_icon_source.h

 // Copyright (c) 2012 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_UI_WEBUI_EXTENSIONS_EXTENSION_ICON_SOURCE_H_
 #define CHROME_BROWSER_UI_WEBUI_EXTENSIONS_EXTENSION_ICON_SOURCE_H_
 
 #include <map>
 #include <string>
 
@@ skipping 66 matching lines @@
       int render_process_id,
       int render_view_id,
       const content::URLDataSource::GotDataCallback& callback) OVERRIDE;
 
  private:
   // Encapsulates the request parameters for |request_id|.
   struct ExtensionIconRequest;
 
   virtual ~ExtensionIconSource();
 
-  // Loads the extension's icon for the given |request_id| and returns the
+  // Returns the bitmap for the default app image.
+  const SkBitmap* GetDefaultAppImage();
+
+  // Returns the bitmap for the default extension.
+  const SkBitmap* GetDefaultExtensionImage();
+
+  // Performs any remaining transformations (like desaturating the |image|),
+  // then returns the |image| to the client and clears up any temporary data
+  // associated with the |request_id|.
+  void FinalizeImage(const SkBitmap* image, int request_id);
+
+  // Loads the default image for |request_id| and returns to the client.
+  void LoadDefaultImage(int request_id);
+
+  // Loads the extension's |icon| for the given |request_id| and returns the
   // image to the client.
-  void LoadExtensionImage(int request_id);
+  void LoadExtensionImage(const ExtensionResource& icon,
+                          int request_id);
 
-  // LoadExtensionImage() will load the icon using
-  // ImageLoader::LoadExtensionIconAsync(). OnIconLoaded will be called when
-  // the icon has been loaded.
-  void OnIconLoaded(int request_id, const gfx::Image& image);
+  // Loads the favicon image for the app associated with the |request_id|. If
+  // the image does not exist, we fall back to the default image.
+  void LoadFaviconImage(int request_id);
+
+  // FaviconService callback
+  void OnFaviconDataAvailable(
+      int request_id,
+      const chrome::FaviconBitmapResult& bitmap_result);
+
+  // ImageLoader callback
+  void OnImageLoaded(int request_id, const gfx::Image& image);
+
+  // Called when the extension doesn't have an icon. We fall back to multiple
+  // sources, using the following order:
+  //  1) The icons as listed in the extension / app manifests.
+  //  2) If a 16px icon and the extension has a launch URL, see if Chrome
+  //     has a corresponding favicon.
+  //  3) If still no matches, load the default extension / application icon.
+  void LoadIconFailed(int request_id);
 
   // Parses and savse an ExtensionIconRequest for the URL |path| for the
   // specified |request_id|.
   bool ParseData(const std::string& path,
                  int request_id,
                  const content::URLDataSource::GotDataCallback& callback);
 
   // Stores the parameters associated with the |request_id|, making them
   // as an ExtensionIconRequest via GetData.
   void SetData(int request_id,
                const content::URLDataSource::GotDataCallback& callback,
                const Extension* extension,
                bool grayscale,
                int size,
                ExtensionIconSet::MatchType match);
 
   // Returns the ExtensionIconRequest for the given |request_id|.
   ExtensionIconRequest* GetData(int request_id);
 
   // Removes temporary data associated with |request_id|.
   void ClearData(int request_id);
 
   Profile* profile_;
 
+  // Maps tracker ids to request ids.
+  std::map<int, int> tracker_map_;
+
   // Maps request_ids to ExtensionIconRequests.
   std::map<int, ExtensionIconRequest*> request_map_;
 
+  scoped_ptr<SkBitmap> default_app_data_;
+
+  scoped_ptr<SkBitmap> default_extension_data_;
+
+  CancelableTaskTracker cancelable_task_tracker_;
+
   DISALLOW_COPY_AND_ASSIGN(ExtensionIconSource);
 };
 
 }  // namespace extensions
 
 #endif  // CHROME_BROWSER_UI_WEBUI_EXTENSIONS_EXTENSION_ICON_SOURCE_H_