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1 // Copyright 2013 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_COMMON_WM_OVERVIEW_WINDOW_SELECTOR_CONTROLLER_H_ | |
6 #define ASH_COMMON_WM_OVERVIEW_WINDOW_SELECTOR_CONTROLLER_H_ | |
7 | |
8 #include <list> | |
9 #include <memory> | |
10 #include <vector> | |
11 | |
12 #include "ash/ash_export.h" | |
13 #include "ash/common/wm/overview/window_selector.h" | |
14 #include "ash/common/wm/overview/window_selector_delegate.h" | |
15 #include "base/macros.h" | |
16 #include "base/time/time.h" | |
17 | |
18 namespace ash { | |
19 class WindowSelector; | |
20 class WindowSelectorTest; | |
21 | |
22 // Manages a window selector which displays an overview of all windows and | |
23 // allows selecting a window to activate it. | |
24 class ASH_EXPORT WindowSelectorController : public WindowSelectorDelegate { | |
25 public: | |
26 WindowSelectorController(); | |
27 ~WindowSelectorController() override; | |
28 | |
29 // Returns true if selecting windows in an overview is enabled. This is false | |
30 // at certain times, such as when the lock screen is visible. | |
31 static bool CanSelect(); | |
32 | |
33 // Attempts to toggle overview mode and returns true if successful (showing | |
34 // overview would be unsuccessful if there are no windows to show). | |
35 bool ToggleOverview(); | |
36 | |
37 // Returns true if window selection mode is active. | |
38 bool IsSelecting() const; | |
39 | |
40 // Moves the current selection by |increment| items. Positive values of | |
41 // |increment| move the selection forward, negative values move it backward. | |
42 void IncrementSelection(int increment); | |
43 | |
44 // Accepts current selection if any. Returns true if a selection was made, | |
45 // false otherwise. | |
46 bool AcceptSelection(); | |
47 | |
48 // Returns true if overview mode is restoring minimized windows so that they | |
49 // are visible during overview mode. | |
50 bool IsRestoringMinimizedWindows() const; | |
51 | |
52 // WindowSelectorDelegate: | |
53 void OnSelectionEnded() override; | |
54 void AddDelayedAnimationObserver( | |
55 std::unique_ptr<DelayedAnimationObserver> animation) override; | |
56 void RemoveAndDestroyAnimationObserver( | |
57 DelayedAnimationObserver* animation) override; | |
58 | |
59 private: | |
60 friend class WindowSelectorTest; | |
61 | |
62 // Dispatched when window selection begins. | |
63 void OnSelectionStarted(); | |
64 | |
65 // Collection of DelayedAnimationObserver objects that own widgets that may be | |
66 // still animating after overview mode ends. If shell needs to shut down while | |
67 // those animations are in progress, the animations are shut down and the | |
68 // widgets destroyed. | |
69 std::vector<std::unique_ptr<DelayedAnimationObserver>> delayed_animations_; | |
70 std::unique_ptr<WindowSelector> window_selector_; | |
71 base::Time last_selection_time_; | |
72 | |
73 DISALLOW_COPY_AND_ASSIGN(WindowSelectorController); | |
74 }; | |
75 | |
76 } // namespace ash | |
77 | |
78 #endif // ASH_COMMON_WM_OVERVIEW_WINDOW_SELECTOR_CONTROLLER_H_ | |
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