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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 SERVICES_WINDOW_MANAGER_CAPTURE_CONTROLLER_H_ | |
6 #define SERVICES_WINDOW_MANAGER_CAPTURE_CONTROLLER_H_ | |
7 | |
8 #include "base/observer_list.h" | |
9 #include "mojo/services/view_manager/cpp/view_observer.h" | |
10 | |
11 namespace window_manager { | |
12 | |
13 class CaptureControllerObserver; | |
14 | |
15 // Manages input capture. A view which has capture will take all input events. | |
16 class CaptureController : public mojo::ViewObserver { | |
17 public: | |
18 CaptureController(); | |
19 ~CaptureController() override; | |
20 | |
21 void AddObserver(CaptureControllerObserver* observer); | |
22 void RemoveObserver(CaptureControllerObserver* observer); | |
23 | |
24 void SetCapture(mojo::View* view); | |
25 void ReleaseCapture(mojo::View* view); | |
26 mojo::View* GetCapture(); | |
27 | |
28 private: | |
29 void NotifyCaptureChange(mojo::View* new_capture, mojo::View* old_capture); | |
30 | |
31 // Overridden from ViewObserver: | |
32 void OnViewDestroying(mojo::View* view) override; | |
33 | |
34 // The current capture view. Null if there is no capture view. | |
35 mojo::View* capture_view_; | |
36 | |
37 base::ObserverList<CaptureControllerObserver> capture_controller_observers_; | |
38 | |
39 DISALLOW_COPY_AND_ASSIGN(CaptureController); | |
40 }; | |
41 | |
42 void SetCaptureController(mojo::View* view, | |
43 CaptureController* capture_controller); | |
44 CaptureController* GetCaptureController(mojo::View* view); | |
45 mojo::View* GetCaptureView(mojo::View* view); | |
46 | |
47 } // namespace window_manager | |
48 | |
49 #endif // SERVICES_WINDOW_MANAGER_CAPTURE_CONTROLLER_H_ | |
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