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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_COMMON_WM_WORKSPACE_WORKSPACE_LAYOUT_MANAGER_H_ | |
6 #define ASH_COMMON_WM_WORKSPACE_WORKSPACE_LAYOUT_MANAGER_H_ | |
7 | |
8 #include <memory> | |
9 #include <set> | |
10 | |
11 #include "ash/ash_export.h" | |
12 #include "ash/common/shell_observer.h" | |
13 #include "ash/common/wm/window_state_observer.h" | |
14 #include "ash/common/wm/wm_types.h" | |
15 #include "ash/common/wm_activation_observer.h" | |
16 #include "ash/common/wm_layout_manager.h" | |
17 #include "base/macros.h" | |
18 #include "ui/aura/window_observer.h" | |
19 #include "ui/display/display_observer.h" | |
20 #include "ui/gfx/geometry/rect.h" | |
21 #include "ui/keyboard/keyboard_controller_observer.h" | |
22 | |
23 namespace ash { | |
24 | |
25 class RootWindowController; | |
26 class WmShell; | |
27 class WmWindow; | |
28 class WorkspaceLayoutManagerBackdropDelegate; | |
29 | |
30 namespace wm { | |
31 class WMEvent; | |
32 } | |
33 | |
34 // LayoutManager used on the window created for a workspace. | |
35 class ASH_EXPORT WorkspaceLayoutManager | |
36 : public WmLayoutManager, | |
37 public aura::WindowObserver, | |
38 public WmActivationObserver, | |
39 public keyboard::KeyboardControllerObserver, | |
40 public display::DisplayObserver, | |
41 public ShellObserver, | |
42 public wm::WindowStateObserver { | |
43 public: | |
44 // |window| is the container for this layout manager. | |
45 explicit WorkspaceLayoutManager(WmWindow* window); | |
46 ~WorkspaceLayoutManager() override; | |
47 | |
48 // A delegate which can be set to add a backdrop behind the top most visible | |
49 // window. With the call the ownership of the delegate will be transferred to | |
50 // the WorkspaceLayoutManager. | |
51 void SetMaximizeBackdropDelegate( | |
52 std::unique_ptr<WorkspaceLayoutManagerBackdropDelegate> delegate); | |
53 | |
54 // Overridden from WmLayoutManager: | |
55 void OnWindowResized() override; | |
56 void OnWindowAddedToLayout(WmWindow* child) override; | |
57 void OnWillRemoveWindowFromLayout(WmWindow* child) override; | |
58 void OnWindowRemovedFromLayout(WmWindow* child) override; | |
59 void OnChildWindowVisibilityChanged(WmWindow* child, bool visibile) override; | |
60 void SetChildBounds(WmWindow* child, | |
61 const gfx::Rect& requested_bounds) override; | |
62 | |
63 // Overriden from aura::WindowObserver: | |
64 void OnWindowHierarchyChanged(const HierarchyChangeParams& params) override; | |
65 void OnWindowPropertyChanged(aura::Window* window, | |
66 const void* key, | |
67 intptr_t old) override; | |
68 void OnWindowStackingChanged(aura::Window* window) override; | |
69 void OnWindowDestroying(aura::Window* window) override; | |
70 void OnWindowBoundsChanged(aura::Window* window, | |
71 const gfx::Rect& old_bounds, | |
72 const gfx::Rect& new_bounds) override; | |
73 | |
74 // WmActivationObserver overrides: | |
75 void OnWindowActivated(WmWindow* gained_active, | |
76 WmWindow* lost_active) override; | |
77 | |
78 // keyboard::KeyboardControllerObserver overrides: | |
79 void OnKeyboardBoundsChanging(const gfx::Rect& new_bounds) override; | |
80 void OnKeyboardClosed() override; | |
81 | |
82 // WindowStateObserver overrides: | |
83 void OnPostWindowStateTypeChange(wm::WindowState* window_state, | |
84 wm::WindowStateType old_type) override; | |
85 | |
86 // display::DisplayObserver overrides: | |
87 void OnDisplayMetricsChanged(const display::Display& display, | |
88 uint32_t changed_metrics) override; | |
89 | |
90 // ShellObserver overrides: | |
91 void OnFullscreenStateChanged(bool is_fullscreen, | |
92 WmWindow* root_window) override; | |
93 void OnPinnedStateChanged(WmWindow* pinned_window) override; | |
94 | |
95 private: | |
96 typedef std::set<WmWindow*> WindowSet; | |
97 | |
98 // Adjusts the bounds of all managed windows when the display area changes. | |
99 // This happens when the display size, work area insets has changed. | |
100 // If this is called for a display size change (i.e. |event| | |
101 // is DISPLAY_RESIZED), the non-maximized/non-fullscreen | |
102 // windows are readjusted to make sure the window is completely within the | |
103 // display region. Otherwise, it makes sure at least some parts of the window | |
104 // is on display. | |
105 void AdjustAllWindowsBoundsForWorkAreaChange(const wm::WMEvent* event); | |
106 | |
107 // Updates the visibility state of the shelf. | |
108 void UpdateShelfVisibility(); | |
109 | |
110 // Updates the fullscreen state of the workspace and notifies Shell if it | |
111 // has changed. | |
112 void UpdateFullscreenState(); | |
113 | |
114 // Updates the always-on-top state for windows managed by this layout | |
115 // manager. | |
116 void UpdateAlwaysOnTop(WmWindow* window_on_top); | |
117 | |
118 WmWindow* window_; | |
119 WmWindow* root_window_; | |
120 RootWindowController* root_window_controller_; | |
121 WmShell* shell_; | |
122 | |
123 // Set of windows we're listening to. | |
124 WindowSet windows_; | |
125 | |
126 // The work area in the coordinates of |window_|. | |
127 gfx::Rect work_area_in_parent_; | |
128 | |
129 // True if this workspace is currently in fullscreen mode. | |
130 bool is_fullscreen_; | |
131 | |
132 // A window which covers the full container and which gets inserted behind the | |
133 // topmost visible window. | |
134 std::unique_ptr<WorkspaceLayoutManagerBackdropDelegate> backdrop_delegate_; | |
135 | |
136 DISALLOW_COPY_AND_ASSIGN(WorkspaceLayoutManager); | |
137 }; | |
138 | |
139 } // namespace ash | |
140 | |
141 #endif // ASH_COMMON_WM_WORKSPACE_WORKSPACE_LAYOUT_MANAGER_H_ | |
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