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1 // Copyright 2015 The Chromium Authors. All rights reserved. | 1 // Copyright 2015 The Chromium Authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #ifndef COMPONENTS_MUS_PUBLIC_CPP_WINDOW_TREE_CLIENT_OBSERVER_H_ | 5 #ifndef SERVICES_UI_PUBLIC_CPP_WINDOW_TREE_CLIENT_OBSERVER_H_ |
6 #define COMPONENTS_MUS_PUBLIC_CPP_WINDOW_TREE_CLIENT_OBSERVER_H_ | 6 #define SERVICES_UI_PUBLIC_CPP_WINDOW_TREE_CLIENT_OBSERVER_H_ |
7 | 7 |
8 namespace mus { | 8 namespace mus { |
9 | 9 |
10 class Window; | 10 class Window; |
11 class WindowTreeClient; | 11 class WindowTreeClient; |
12 | 12 |
13 class WindowTreeClientObserver { | 13 class WindowTreeClientObserver { |
14 public: | 14 public: |
15 virtual void OnWindowTreeFocusChanged(Window* gained_focus, | 15 virtual void OnWindowTreeFocusChanged(Window* gained_focus, |
16 Window* lost_focus) {} | 16 Window* lost_focus) {} |
17 | 17 |
18 // Called early on in the destructor of WindowTreeClient; before any windows | 18 // Called early on in the destructor of WindowTreeClient; before any windows |
19 // have been destroyed. | 19 // have been destroyed. |
20 virtual void OnWillDestroyClient(WindowTreeClient* client) {} | 20 virtual void OnWillDestroyClient(WindowTreeClient* client) {} |
21 | 21 |
22 // Called at the end of WindowTreeClient's destructor. At this point | 22 // Called at the end of WindowTreeClient's destructor. At this point |
23 // observers should drop all references to |client|. | 23 // observers should drop all references to |client|. |
24 virtual void OnDidDestroyClient(WindowTreeClient* client) {} | 24 virtual void OnDidDestroyClient(WindowTreeClient* client) {} |
25 | 25 |
26 protected: | 26 protected: |
27 virtual ~WindowTreeClientObserver() {} | 27 virtual ~WindowTreeClientObserver() {} |
28 }; | 28 }; |
29 | 29 |
30 } // namespace mus | 30 } // namespace mus |
31 | 31 |
32 #endif // COMPONENTS_MUS_PUBLIC_CPP_WINDOW_TREE_CLIENT_OBSERVER_H_ | 32 #endif // SERVICES_UI_PUBLIC_CPP_WINDOW_TREE_CLIENT_OBSERVER_H_ |
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