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1 // Copyright 2014 The Chromium Authors. All rights reserved. | 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 | 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 SERVICES_WINDOW_MANAGER_FOCUS_CONTROLLER_H_ | 5 #ifndef SERVICES_WINDOW_MANAGER_FOCUS_CONTROLLER_H_ |
6 #define SERVICES_WINDOW_MANAGER_FOCUS_CONTROLLER_H_ | 6 #define SERVICES_WINDOW_MANAGER_FOCUS_CONTROLLER_H_ |
7 | 7 |
8 #include "base/compiler_specific.h" | 8 #include "base/compiler_specific.h" |
9 #include "base/memory/scoped_ptr.h" | 9 #include "base/memory/scoped_ptr.h" |
10 #include "base/observer_list.h" | 10 #include "base/observer_list.h" |
11 #include "base/scoped_observer.h" | 11 #include "base/scoped_observer.h" |
12 #include "mojo/services/public/cpp/view_manager/view_observer.h" | 12 #include "mojo/services/public/cpp/view_manager/view_observer.h" |
13 #include "ui/events/event_handler.h" | 13 #include "ui/events/event_handler.h" |
14 | 14 |
15 namespace mojo { | 15 namespace window_manager { |
16 | 16 |
17 class FocusControllerObserver; | 17 class FocusControllerObserver; |
18 class FocusRules; | 18 class FocusRules; |
19 | 19 |
20 // FocusController handles focus and activation changes in a mojo window | 20 // FocusController handles focus and activation changes in a mojo window |
21 // manager. Within the window manager, there can only be one focused and one | 21 // manager. Within the window manager, there can only be one focused and one |
22 // active window at a time. When focus or activation changes, notifications are | 22 // active window at a time. When focus or activation changes, notifications are |
23 // sent using the FocusControllerObserver interface. | 23 // sent using the FocusControllerObserver interface. |
24 class FocusController : public ui::EventHandler, | 24 class FocusController : public ui::EventHandler, public mojo::ViewObserver { |
25 public ViewObserver { | |
26 public: | 25 public: |
27 // |rules| cannot be null. | 26 // |rules| cannot be null. |
28 explicit FocusController(scoped_ptr<FocusRules> rules); | 27 explicit FocusController(scoped_ptr<FocusRules> rules); |
29 virtual ~FocusController(); | 28 virtual ~FocusController(); |
30 | 29 |
31 void AddObserver(FocusControllerObserver* observer); | 30 void AddObserver(FocusControllerObserver* observer); |
32 void RemoveObserver(FocusControllerObserver* observer); | 31 void RemoveObserver(FocusControllerObserver* observer); |
33 | 32 |
34 void ActivateView(View* view); | 33 void ActivateView(mojo::View* view); |
35 void DeactivateView(View* view); | 34 void DeactivateView(mojo::View* view); |
36 View* GetActiveView(); | 35 mojo::View* GetActiveView(); |
37 View* GetActivatableView(View* view); | 36 mojo::View* GetActivatableView(mojo::View* view); |
38 View* GetToplevelView(View* view); | 37 mojo::View* GetToplevelView(mojo::View* view); |
39 bool CanActivateView(View* view) const; | 38 bool CanActivateView(mojo::View* view) const; |
40 | 39 |
41 void FocusView(View* view); | 40 void FocusView(mojo::View* view); |
42 | 41 |
43 void ResetFocusWithinActiveView(View* view); | 42 void ResetFocusWithinActiveView(mojo::View* view); |
44 View* GetFocusedView(); | 43 mojo::View* GetFocusedView(); |
45 | 44 |
46 // Overridden from ui::EventHandler: | 45 // Overridden from ui::EventHandler: |
47 void OnKeyEvent(ui::KeyEvent* event) override; | 46 void OnKeyEvent(ui::KeyEvent* event) override; |
48 void OnMouseEvent(ui::MouseEvent* event) override; | 47 void OnMouseEvent(ui::MouseEvent* event) override; |
49 void OnScrollEvent(ui::ScrollEvent* event) override; | 48 void OnScrollEvent(ui::ScrollEvent* event) override; |
50 void OnTouchEvent(ui::TouchEvent* event) override; | 49 void OnTouchEvent(ui::TouchEvent* event) override; |
51 void OnGestureEvent(ui::GestureEvent* event) override; | 50 void OnGestureEvent(ui::GestureEvent* event) override; |
52 | 51 |
53 // Overridden from ViewObserver: | 52 // Overridden from ViewObserver: |
54 void OnTreeChanging(const TreeChangeParams& params) override; | 53 void OnTreeChanging(const TreeChangeParams& params) override; |
55 void OnTreeChanged(const TreeChangeParams& params) override; | 54 void OnTreeChanged(const TreeChangeParams& params) override; |
56 void OnViewVisibilityChanged(View* view) override; | 55 void OnViewVisibilityChanged(mojo::View* view) override; |
57 void OnViewDestroying(View* view) override; | 56 void OnViewDestroying(mojo::View* view) override; |
58 | 57 |
59 private: | 58 private: |
60 // Internal implementation that sets the focused view, fires events etc. | 59 // Internal implementation that sets the focused view, fires events etc. |
61 // This function must be called with a valid focusable view. | 60 // This function must be called with a valid focusable view. |
62 void SetFocusedView(View* view); | 61 void SetFocusedView(mojo::View* view); |
63 | 62 |
64 // Internal implementation that sets the active window, fires events etc. | 63 // Internal implementation that sets the active window, fires events etc. |
65 // This function must be called with a valid |activatable_window|. | 64 // This function must be called with a valid |activatable_window|. |
66 // |requested window| refers to the window that was passed in to an external | 65 // |requested window| refers to the window that was passed in to an external |
67 // request (e.g. FocusWindow or ActivateWindow). It may be null, e.g. if | 66 // request (e.g. FocusWindow or ActivateWindow). It may be null, e.g. if |
68 // SetActiveWindow was not called by an external request. |activatable_window| | 67 // SetActiveWindow was not called by an external request. |activatable_window| |
69 // refers to the actual window to be activated, which may be different. | 68 // refers to the actual window to be activated, which may be different. |
70 void SetActiveView(View* requested_view, | 69 void SetActiveView(mojo::View* requested_view, mojo::View* activatable_view); |
71 View* activatable_view); | |
72 | 70 |
73 // Called when a window's disposition changed such that it and its hierarchy | 71 // Called when a window's disposition changed such that it and its hierarchy |
74 // are no longer focusable/activatable. |next| is a valid window that is used | 72 // are no longer focusable/activatable. |next| is a valid window that is used |
75 // as a starting point for finding a window to focus next based on rules. | 73 // as a starting point for finding a window to focus next based on rules. |
76 void ViewLostFocusFromDispositionChange(View* view, View* next); | 74 void ViewLostFocusFromDispositionChange(mojo::View* view, mojo::View* next); |
77 | 75 |
78 // Called when an attempt is made to focus or activate a window via an input | 76 // Called when an attempt is made to focus or activate a window via an input |
79 // event targeted at that window. Rules determine the best focusable window | 77 // event targeted at that window. Rules determine the best focusable window |
80 // for the input window. | 78 // for the input window. |
81 void ViewFocusedFromInputEvent(View* view); | 79 void ViewFocusedFromInputEvent(mojo::View* view); |
82 | 80 |
83 View* active_view_; | 81 mojo::View* active_view_; |
84 View* focused_view_; | 82 mojo::View* focused_view_; |
85 | 83 |
86 bool updating_focus_; | 84 bool updating_focus_; |
87 bool updating_activation_; | 85 bool updating_activation_; |
88 | 86 |
89 scoped_ptr<FocusRules> rules_; | 87 scoped_ptr<FocusRules> rules_; |
90 | 88 |
91 ObserverList<FocusControllerObserver> focus_controller_observers_; | 89 ObserverList<FocusControllerObserver> focus_controller_observers_; |
92 | 90 |
93 ScopedObserver<View, ViewObserver> observer_manager_; | 91 ScopedObserver<mojo::View, ViewObserver> observer_manager_; |
94 | 92 |
95 DISALLOW_COPY_AND_ASSIGN(FocusController); | 93 DISALLOW_COPY_AND_ASSIGN(FocusController); |
96 }; | 94 }; |
97 | 95 |
98 // Sets/Gets the focus controller for a root view. | 96 // Sets/Gets the focus controller for a root view. |
99 void SetFocusController(View* view, FocusController* focus_controller); | 97 void SetFocusController(mojo::View* view, FocusController* focus_controller); |
100 FocusController* GetFocusController(View* view); | 98 FocusController* GetFocusController(mojo::View* view); |
101 | 99 |
102 } // namespace mojo | 100 } // namespace window_manager |
103 | 101 |
104 #endif // SERVICES_WINDOW_MANAGER_FOCUS_CONTROLLER_H_ | 102 #endif // SERVICES_WINDOW_MANAGER_FOCUS_CONTROLLER_H_ |
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