1// Copyright (c) 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 UI_NATIVE_THEME_NATIVE_THEME_OBSERVER_H_
6#define UI_NATIVE_THEME_NATIVE_THEME_OBSERVER_H_
7
8#include "ui/native_theme/native_theme_export.h"
9
10namespace ui {
11
12class NativeTheme;
13
14// Observers which are notified when the native theme changes.
15class NATIVE_THEME_EXPORT NativeThemeObserver {
16 public:
17  // Called when the native theme changes. The observed theme is passed so that
18  // observers may handle changes to their associated native theme instances.
19  virtual void OnNativeThemeUpdated(ui::NativeTheme* observed_theme) = 0;
20
21 protected:
22  virtual ~NativeThemeObserver();
23};
24
25}  // namespace ui
26
27#endif  // UI_NATIVE_THEME_NATIVE_THEME_OBSERVER_H_
28