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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 ASH_WM_WINDOW_CYCLE_LIST_H_ | 5 #ifndef ASH_WM_WINDOW_CYCLE_LIST_H_ |
6 #define ASH_WM_WINDOW_CYCLE_LIST_H_ | 6 #define ASH_WM_WINDOW_CYCLE_LIST_H_ |
7 | 7 |
8 #include <memory> | 8 #include <memory> |
9 #include <vector> | 9 #include <vector> |
10 | 10 |
11 #include "ash/ash_export.h" | 11 #include "ash/ash_export.h" |
12 #include "ash/common/wm_window_observer.h" | 12 #include "ash/common/wm_window_observer.h" |
13 #include "ash/wm/window_cycle_controller.h" | 13 #include "ash/wm/window_cycle_controller.h" |
14 #include "base/macros.h" | 14 #include "base/macros.h" |
15 | 15 |
| 16 namespace views { |
| 17 class Label; |
| 18 class Widget; |
| 19 } |
| 20 |
16 namespace ash { | 21 namespace ash { |
17 | 22 |
18 class ScopedShowWindow; | 23 class ScopedShowWindow; |
| 24 class WindowCycleView; |
19 | 25 |
20 // Tracks a set of Windows that can be stepped through. This class is used by | 26 // Tracks a set of Windows that can be stepped through. This class is used by |
21 // the WindowCycleController. | 27 // the WindowCycleController. |
22 class ASH_EXPORT WindowCycleList : public WmWindowObserver { | 28 class ASH_EXPORT WindowCycleList : public WmWindowObserver { |
23 public: | 29 public: |
24 using WindowList = std::vector<WmWindow*>; | 30 using WindowList = std::vector<WmWindow*>; |
25 | 31 |
26 explicit WindowCycleList(const WindowList& windows); | 32 explicit WindowCycleList(const WindowList& windows); |
27 ~WindowCycleList() override; | 33 ~WindowCycleList() override; |
28 | 34 |
29 bool empty() const { return windows_.empty(); } | 35 bool empty() const { return windows_.empty(); } |
30 | 36 |
31 // Cycles to the next or previous window based on |direction|. | 37 // Cycles to the next or previous window based on |direction|. |
32 void Step(WindowCycleController::Direction direction); | 38 void Step(WindowCycleController::Direction direction); |
33 | 39 |
34 int current_index() const { return current_index_; } | 40 int current_index() const { return current_index_; } |
35 | 41 |
36 private: | 42 private: |
37 friend class WindowCycleControllerTest; | 43 friend class WindowCycleControllerTest; |
38 const WindowList& windows() const { return windows_; } | 44 const WindowList& windows() const { return windows_; } |
39 | 45 |
40 // aura::WindowObserver overrides: | 46 // aura::WindowObserver overrides: |
41 // There is a chance a window is destroyed, for example by JS code. We need to | 47 // There is a chance a window is destroyed, for example by JS code. We need to |
42 // take care of that even if it is not intended for the user to close a window | 48 // take care of that even if it is not intended for the user to close a window |
43 // while window cycling. | 49 // while window cycling. |
44 void OnWindowDestroying(WmWindow* window) override; | 50 void OnWindowDestroying(WmWindow* window) override; |
45 | 51 |
| 52 // Returns true if the window list overlay should be shown. |
| 53 bool ShouldShowUi(); |
| 54 |
46 // List of weak pointers to windows to use while cycling with the keyboard. | 55 // List of weak pointers to windows to use while cycling with the keyboard. |
47 // List is built when the user initiates the gesture (i.e. hits alt-tab the | 56 // List is built when the user initiates the gesture (i.e. hits alt-tab the |
48 // first time) and is emptied when the gesture is complete (i.e. releases the | 57 // first time) and is emptied when the gesture is complete (i.e. releases the |
49 // alt key). | 58 // alt key). |
50 WindowList windows_; | 59 WindowList windows_; |
51 | 60 |
52 // Current position in the |windows_|. Can be used to query selection depth, | 61 // Current position in the |windows_|. Can be used to query selection depth, |
53 // i.e., the position of an active window in a global MRU ordering. | 62 // i.e., the position of an active window in a global MRU ordering. |
54 int current_index_; | 63 int current_index_; |
55 | 64 |
56 // Wrapper for the window brought to the front. | 65 // Wrapper for the window brought to the front. |
57 std::unique_ptr<ScopedShowWindow> showing_window_; | 66 std::unique_ptr<ScopedShowWindow> showing_window_; |
58 | 67 |
| 68 // The top level View for the window cycle UI. May be null if the UI is not |
| 69 // showing. |
| 70 WindowCycleView* cycle_view_; |
| 71 |
| 72 // The widget that hosts the window cycle UI. |
| 73 views::Widget* cycle_ui_widget_; |
| 74 |
59 DISALLOW_COPY_AND_ASSIGN(WindowCycleList); | 75 DISALLOW_COPY_AND_ASSIGN(WindowCycleList); |
60 }; | 76 }; |
61 | 77 |
62 } // namespace ash | 78 } // namespace ash |
63 | 79 |
64 #endif // ASH_WM_WINDOW_CYCLE_LIST_H_ | 80 #endif // ASH_WM_WINDOW_CYCLE_LIST_H_ |
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