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1 // Copyright (c) 2012 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_WM_APP_LIST_CONTROLLER_H_ | |
6 #define ASH_WM_APP_LIST_CONTROLLER_H_ | |
7 | |
8 #include "ash/shelf/shelf_icon_observer.h" | |
9 #include "ash/shell_observer.h" | |
10 #include "base/compiler_specific.h" | |
11 #include "base/macros.h" | |
12 #include "ui/app_list/pagination_model_observer.h" | |
13 #include "ui/aura/client/focus_change_observer.h" | |
14 #include "ui/aura/window_observer.h" | |
15 #include "ui/compositor/layer_animation_observer.h" | |
16 #include "ui/events/event_handler.h" | |
17 #include "ui/gfx/geometry/rect.h" | |
18 #include "ui/keyboard/keyboard_controller_observer.h" | |
19 #include "ui/views/widget/widget_observer.h" | |
20 | |
21 namespace app_list { | |
22 class ApplicationDragAndDropHost; | |
23 class AppListView; | |
24 } | |
25 | |
26 namespace ui { | |
27 class LocatedEvent; | |
28 } | |
29 | |
30 namespace ash { | |
31 namespace test { | |
32 class AppListControllerTestApi; | |
33 } | |
34 | |
35 // AppListController is a controller that manages app list UI for shell. | |
36 // It creates AppListView and schedules showing/hiding animation. | |
37 // While the UI is visible, it monitors things such as app list widget's | |
38 // activation state and desktop mouse click to auto dismiss the UI. | |
39 class AppListController : public ui::EventHandler, | |
40 public aura::client::FocusChangeObserver, | |
41 public aura::WindowObserver, | |
42 public ui::ImplicitAnimationObserver, | |
43 public views::WidgetObserver, | |
44 public keyboard::KeyboardControllerObserver, | |
45 public ShellObserver, | |
46 public ShelfIconObserver, | |
47 public app_list::PaginationModelObserver { | |
48 public: | |
49 AppListController(); | |
50 ~AppListController() override; | |
51 | |
52 // Show/hide app list window. The |window| is used to deterime in | |
53 // which display (in which the |window| exists) the app list should | |
54 // be shown. | |
55 void Show(aura::Window* window); | |
56 void Dismiss(); | |
57 | |
58 // Whether app list window is visible (shown or being shown). | |
59 bool IsVisible() const; | |
60 | |
61 // Returns target visibility. This differs from IsVisible() if an animation | |
62 // is ongoing. | |
63 bool GetTargetVisibility() const { return is_visible_; } | |
64 | |
65 // Returns app list window or NULL if it is not visible. | |
66 aura::Window* GetWindow(); | |
67 | |
68 // Returns app list view if one exists, or NULL otherwise. | |
69 app_list::AppListView* GetView() { return view_; } | |
70 | |
71 private: | |
72 friend class test::AppListControllerTestApi; | |
73 | |
74 // If |drag_and_drop_host| is not NULL it will be called upon drag and drop | |
75 // operations outside the application list. | |
76 void SetDragAndDropHostOfCurrentAppList( | |
77 app_list::ApplicationDragAndDropHost* drag_and_drop_host); | |
78 | |
79 // Sets the app list view and attempts to show it. | |
80 void SetView(app_list::AppListView* view); | |
81 | |
82 // Forgets the view. | |
83 void ResetView(); | |
84 | |
85 // Starts show/hide animation. | |
86 void ScheduleAnimation(); | |
87 | |
88 void ProcessLocatedEvent(ui::LocatedEvent* event); | |
89 | |
90 // Makes app list bubble update its bounds. | |
91 void UpdateBounds(); | |
92 | |
93 // ui::EventHandler overrides: | |
94 void OnMouseEvent(ui::MouseEvent* event) override; | |
95 void OnGestureEvent(ui::GestureEvent* event) override; | |
96 | |
97 // aura::client::FocusChangeObserver overrides: | |
98 void OnWindowFocused(aura::Window* gained_focus, | |
99 aura::Window* lost_focus) override; | |
100 | |
101 // aura::WindowObserver overrides: | |
102 void OnWindowBoundsChanged(aura::Window* root, | |
103 const gfx::Rect& old_bounds, | |
104 const gfx::Rect& new_bounds) override; | |
105 | |
106 // ui::ImplicitAnimationObserver overrides: | |
107 void OnImplicitAnimationsCompleted() override; | |
108 | |
109 // views::WidgetObserver overrides: | |
110 void OnWidgetDestroying(views::Widget* widget) override; | |
111 | |
112 // KeyboardControllerObserver overrides: | |
113 void OnKeyboardBoundsChanging(const gfx::Rect& new_bounds) override; | |
114 | |
115 // ShellObserver overrides: | |
116 void OnShelfAlignmentChanged(aura::Window* root_window) override; | |
117 void OnMaximizeModeStarted() override; | |
118 void OnMaximizeModeEnded() override; | |
119 | |
120 // ShelfIconObserver overrides: | |
121 void OnShelfIconPositionsChanged() override; | |
122 | |
123 // app_list::PaginationModelObserver overrides: | |
124 void TotalPagesChanged() override; | |
125 void SelectedPageChanged(int old_selected, int new_selected) override; | |
126 void TransitionStarted() override; | |
127 void TransitionChanged() override; | |
128 | |
129 // Whether we should show or hide app list widget. | |
130 bool is_visible_; | |
131 | |
132 // Whether the app list should remain centered. | |
133 bool is_centered_; | |
134 | |
135 // The AppListView this class manages, owned by its widget. | |
136 app_list::AppListView* view_; | |
137 | |
138 // The current page of the AppsGridView of |view_|. This is stored outside of | |
139 // the view's PaginationModel, so that it persists when the view is destroyed. | |
140 int current_apps_page_; | |
141 | |
142 // Cached bounds of |view_| for snapping back animation after over-scroll. | |
143 gfx::Rect view_bounds_; | |
144 | |
145 // Whether should schedule snap back animation. | |
146 bool should_snap_back_; | |
147 | |
148 DISALLOW_COPY_AND_ASSIGN(AppListController); | |
149 }; | |
150 | |
151 } // namespace ash | |
152 | |
153 #endif // ASH_WM_APP_LIST_CONTROLLER_H_ | |
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