chrome/browser/ui/views/elevation_icon_setter.h

   1 // Copyright 2014 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_VIEWS_ELEVATION_ICON_SETTER_H_
   6 #define CHROME_BROWSER_UI_VIEWS_ELEVATION_ICON_SETTER_H_
   7
   8 #include "base/callback_forward.h"
   9 #include "base/memory/scoped_ptr.h"
  10 #include "base/memory/weak_ptr.h"
  11
  12 class SkBitmap;
  13
  14 namespace views {
  15 class LabelButton;
  16 }
  17
  18 // On Windows, badges a button with a "UAC shield" icon to indicate that
  19 // clicking will trigger a UAC elevation prompt.  Does nothing on other
  20 // platforms.
  21 class ElevationIconSetter {
  22  public:
  23   // |button| must be guaranteed to be alive throughout this class' lifetime!
  24   // |callback| will be called if the button icon is actually changed; callers
  25   // should pass a function which does a relayout on the view containing the
  26   // button, to ensure the button is correctly resized as necessary.
  27   ElevationIconSetter(views::LabelButton* button,
  28                       const base::Closure& callback);
  29   ~ElevationIconSetter();
  30
  31  private:
  32   void SetButtonIcon(const base::Closure& callback, scoped_ptr<SkBitmap> icon);
  33
  34   views::LabelButton* button_;
  35   base::WeakPtrFactory<ElevationIconSetter> weak_factory_;
  36
  37   DISALLOW_COPY_AND_ASSIGN(ElevationIconSetter);
  38 };
  39
  40 #endif  // CHROME_BROWSER_UI_VIEWS_ELEVATION_ICON_SETTER_H_