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      1 // Copyright 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_UI_WEBUI_CHROMEOS_LOGIN_SCREENLOCK_ICON_PROVIDER_H_
      6 #define CHROME_BROWSER_UI_WEBUI_CHROMEOS_LOGIN_SCREENLOCK_ICON_PROVIDER_H_
      7 
      8 #include <map>
      9 
     10 #include "base/memory/weak_ptr.h"
     11 #include "ui/gfx/image/image.h"
     12 
     13 namespace chromeos {
     14 
     15 // Stores icon images used by the screenlockPrivate API. This class is
     16 // separate from ScreenlockIconSource for finer memory management.
     17 class ScreenlockIconProvider
     18     : public base::SupportsWeakPtr<ScreenlockIconProvider> {
     19  public:
     20   ScreenlockIconProvider();
     21   ~ScreenlockIconProvider();
     22 
     23   // Adds an icon image for |username| to be stored.
     24   void AddIcon(const std::string& username, const gfx::Image& icon);
     25 
     26   // Removes icon image for |username|.
     27   void RemoveIcon(const std::string& username);
     28 
     29   // Returns the icon image set for |username|. If no icon is found, then
     30   // this function returns an empty image.
     31   gfx::Image GetIcon(const std::string& username);
     32 
     33   // Removes all stored icon images.
     34   void Clear();
     35 
     36  private:
     37   // Map of icons for the user pod buttons set by screenlockPrivate.showButton.
     38   std::map<std::string, gfx::Image> user_icon_map_;
     39 
     40   DISALLOW_COPY_AND_ASSIGN(ScreenlockIconProvider);
     41 };
     42 
     43 }  // namespace chromeos
     44 
     45 #endif  // CHROME_BROWSER_UI_WEBUI_CHROMEOS_LOGIN_SCREENLOCK_ICON_PROVIDER_H_
     46