Upstream version 7.36.149.0
[platform/framework/web/crosswalk.git] / src / ash / display / display_error_observer_chromeos.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 ASH_DISPLAY_DISPLAY_ERROR_OBSERVER_CHROMEOS_H_
6 #define ASH_DISPLAY_DISPLAY_ERROR_OBSERVER_CHROMEOS_H_
7
8 #include "ash/ash_export.h"
9 #include "base/compiler_specific.h"
10 #include "base/strings/string16.h"
11 #include "ui/display/chromeos/display_configurator.h"
12
13 namespace ash {
14
15 // The class to observe the output failures and shows the error dialog when
16 // necessary.
17 class ASH_EXPORT DisplayErrorObserver
18     : public ui::DisplayConfigurator::Observer {
19  public:
20   DisplayErrorObserver();
21   virtual ~DisplayErrorObserver();
22
23   // ui::DisplayConfigurator::Observer overrides:
24   virtual void OnDisplayModeChangeFailed(
25       ui::MultipleDisplayState failed_new_state) OVERRIDE;
26
27  private:
28   friend class DisplayErrorObserverTest;
29
30   base::string16 GetTitleOfDisplayErrorNotificationForTest();
31
32   DISALLOW_COPY_AND_ASSIGN(DisplayErrorObserver);
33 };
34
35 }  // namespace ash
36
37 #endif  // ASH_DISPLAY_DISPLAY_ERROR_OBSERVER_CHROMEOS_H_