chrome/browser/ui/webui/chromeos/login/screenlock_icon_provider.h

   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_