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1 // Copyright 2016 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_MUS_ROOT_WINDOW_OBSERVERS_H_ | |
6 #define ASH_MUS_ROOT_WINDOW_OBSERVERS_H_ | |
7 | |
8 namespace ash { | |
9 namespace mus { | |
10 | |
11 class RootWindowController; | |
12 | |
13 class RootWindowsObserver { | |
14 public: | |
15 // Called once a new display has been created and the root Window obtained. | |
16 virtual void OnRootWindowControllerAdded(RootWindowController* controller) {} | |
17 | |
18 // Called before a RootWindowController is destroyed. | |
19 virtual void OnWillDestroyRootWindowController( | |
20 RootWindowController* controller) {} | |
21 | |
22 protected: | |
23 ~RootWindowsObserver() {} | |
24 }; | |
25 | |
26 } // namespace mus | |
27 } // namespace ash | |
28 | |
29 #endif // ASH_MUS_ROOT_WINDOW_OBSERVERS_H_ | |
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