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1 // Copyright (c) 2011 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2011 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 CHROME_BROWSER_UI_PANELS_PANEL_MANAGER_H_ | 5 #ifndef CHROME_BROWSER_UI_PANELS_PANEL_MANAGER_H_ |
6 #define CHROME_BROWSER_UI_PANELS_PANEL_MANAGER_H_ | 6 #define CHROME_BROWSER_UI_PANELS_PANEL_MANAGER_H_ |
7 #pragma once | 7 #pragma once |
8 | 8 |
9 #include <vector> | 9 #include <vector> |
10 #include "base/basictypes.h" | 10 #include "base/basictypes.h" |
11 #include "base/memory/ref_counted.h" | |
11 #include "base/memory/scoped_ptr.h" | 12 #include "base/memory/scoped_ptr.h" |
13 #include "base/task.h" | |
14 #include "chrome/browser/ui/panels/auto_hide_bottom_bar.h" | |
12 #include "chrome/browser/ui/panels/panel.h" | 15 #include "chrome/browser/ui/panels/panel.h" |
13 #include "ui/gfx/rect.h" | 16 #include "ui/gfx/rect.h" |
14 | 17 |
15 class Browser; | 18 class Browser; |
16 class Panel; | 19 class Panel; |
17 | 20 |
18 // This class manages a set of panels. | 21 // This class manages a set of panels. |
19 class PanelManager { | 22 // Note that the ref count is needed by using PostTask in the implementation. |
23 class PanelManager : public AutoHideBottomBar::Observer, | |
24 public base::RefCountedThreadSafe<PanelManager> { | |
20 public: | 25 public: |
21 // Returns a single instance. | 26 // Returns a single instance. |
22 static PanelManager* GetInstance(); | 27 static PanelManager* GetInstance(); |
23 | 28 |
24 ~PanelManager(); | 29 virtual ~PanelManager(); |
25 | 30 |
26 // Called when the display is changed, i.e. work area is updated. | 31 // Called when the display is changed, i.e. work area is updated. |
27 void OnDisplayChanged(); | 32 void OnDisplayChanged(); |
28 | 33 |
29 // Creates a panel and returns it. The panel might be queued for display | 34 // Creates a panel and returns it. The panel might be queued for display |
30 // later. | 35 // later. |
31 Panel* CreatePanel(Browser* browser); | 36 Panel* CreatePanel(Browser* browser); |
32 | 37 |
33 void Remove(Panel* panel); | 38 void Remove(Panel* panel); |
34 void RemoveAll(); | 39 void RemoveAll(); |
35 | 40 |
36 // Drags the given panel. | 41 // Drags the given panel. |
37 void StartDragging(Panel* panel); | 42 void StartDragging(Panel* panel); |
38 void Drag(int delta_x); | 43 void Drag(int delta_x); |
39 void EndDragging(bool cancelled); | 44 void EndDragging(bool cancelled); |
40 | 45 |
41 // Should we bring up the titlebar, given the current mouse point? | 46 // Should we bring up the titlebar, given the current mouse point? |
jennb
2011/08/23 20:28:34
Nit: Change comment to "Returns true if we should
jianli
2011/08/26 00:18:16
Done.
| |
42 bool ShouldBringUpTitlebarForAllMinimizedPanels(int mouse_x, | 47 bool ShouldBringUpTitlebars(int mouse_x, int mouse_y) const; |
43 int mouse_y) const; | |
44 | 48 |
45 // Brings up or down the title-bar for all minimized panels. | 49 // Brings up or down the titlebars for all minimized panels. |
46 void BringUpOrDownTitlebarForAllMinimizedPanels(bool bring_up); | 50 void BringUpOrDownTitlebars(bool bring_up); |
51 | |
52 // Returns the bottom position for the panel per its expansion state. If auto- | |
53 // hide bottom bar is present, we want to move the minimized panel to the | |
54 // bottom of the screen, not the bottom of the work area. | |
55 int GetBottomPositionForExpansionState( | |
56 Panel::ExpansionState expansion_state) const; | |
47 | 57 |
48 int num_panels() const { return panels_.size(); } | 58 int num_panels() const { return panels_.size(); } |
49 bool is_dragging_panel() const; | 59 bool is_dragging_panel() const; |
50 | 60 |
61 #ifdef UNIT_TEST | |
62 // Creates a PanelManager instance with the specified work area and bottom | |
63 // bar handler, for the testing purpose. We cannot instantiate the default | |
jennb
2011/08/23 20:28:34
nit: s/for the testing purpose/for testing purpose
jianli
2011/08/26 00:18:16
Done.
| |
64 // PanelManager instance by calling PanelManager::GetInstance() in the test | |
jennb
2011/08/23 20:28:34
Must the PanelManager instance be instantiated in
jianli
2011/08/26 00:18:16
Done.
| |
65 // setup routine because the message loop needed by the default bottom bar | |
66 // handler has not yet been initialized. | |
67 static void CreateForTesting(const gfx::Rect& work_area, | |
68 AutoHideBottomBar* auto_hide_bottom_bar) { | |
69 CreateForTestingHelper(work_area, auto_hide_bottom_bar); | |
70 } | |
71 #endif | |
72 | |
51 private: | 73 private: |
52 friend class PanelBrowserTest; | 74 enum DelayedTitlebarAction { |
jennb
2011/08/23 20:28:34
Drop 'Delay' prefix. How you use it later brings a
jianli
2011/08/26 00:18:16
Done.
| |
75 NO_ACTION, | |
76 BRING_UP, | |
77 BRING_DOWN | |
78 }; | |
53 | 79 |
54 typedef std::vector<Panel*> Panels; | 80 typedef std::vector<Panel*> Panels; |
55 | 81 |
56 PanelManager(); | 82 PanelManager(); |
57 | 83 |
84 // This is only called from the default PanelManager creation logic. | |
85 void Init(); | |
86 | |
87 // Overridden from AutoHideBottomBar::Observer: | |
88 virtual void OnAutoHideBottomBarVisibilityChanged( | |
89 AutoHideBottomBar::Visibility visibility) OVERRIDE; | |
90 virtual void OnAutoHideBottomBarHeightChanged(int height) OVERRIDE; | |
91 | |
58 // Applies the new work area. This is called by OnDisplayChanged and the test | 92 // Applies the new work area. This is called by OnDisplayChanged and the test |
59 // code. | 93 // code. |
60 void SetWorkArea(const gfx::Rect& work_area); | 94 void SetWorkArea(const gfx::Rect& work_area); |
61 | 95 |
62 // Handles all the panels that're delayed to be removed. | 96 // Handles all the panels that're delayed to be removed. |
63 void DelayedRemove(); | 97 void DelayedRemove(); |
64 | 98 |
65 // Does the remove. Called from Remove and DelayedRemove. | 99 // Does the remove. Called from Remove and DelayedRemove. |
66 void DoRemove(Panel* panel); | 100 void DoRemove(Panel* panel); |
67 | 101 |
68 // Rearranges the positions of the panels starting from the given iterator. | 102 // Rearranges the positions of the panels starting from the given iterator. |
69 // This is called when the display space has been changed, i.e. working | 103 // This is called when the display space has been changed, i.e. working |
70 // area being changed or a panel being closed. | 104 // area being changed or a panel being closed. |
71 void Rearrange(Panels::iterator iter_to_start); | 105 void Rearrange(Panels::iterator iter_to_start); |
72 | 106 |
73 // Computes the bounds for next panel. | 107 // Computes the bounds for next panel. |
74 // |allow_size_change| is used to indicate if the panel size can be changed to | 108 // |allow_size_change| is used to indicate if the panel size can be changed to |
75 // fall within the size constraint, e.g., when the panel is created. | 109 // fall within the size constraint, e.g., when the panel is created. |
76 // Returns true if computed bounds are within the displayable area. | 110 // Returns true if computed bounds are within the displayable area. |
77 bool ComputeBoundsForNextPanel(gfx::Rect* bounds, bool allow_size_change); | 111 bool ComputeBoundsForNextPanel(gfx::Rect* bounds, bool allow_size_change); |
78 | 112 |
79 // Finds one panel to close so that we may have space for the new panel | 113 // Finds one panel to close so that we may have space for the new panel |
80 // created by |extension|. | 114 // created by |extension|. |
81 void FindAndClosePanelOnOverflow(const Extension* extension); | 115 void FindAndClosePanelOnOverflow(const Extension* extension); |
82 | 116 |
83 // Help functions to drag the given panel. | 117 // Help functions to drag the given panel. |
84 void DragLeft(); | 118 void DragLeft(); |
85 void DragRight(); | 119 void DragRight(); |
86 | 120 |
121 void DelayedBringUpOrDownTitlebarsCheck(); | |
jennb
2011/08/23 20:28:34
Comment? What is it checking?
jianli
2011/08/26 00:18:16
Done.
| |
122 void DoBringUpOrDownTitlebars(bool bring_up); | |
123 | |
124 // For testing only. | |
125 static void CreateForTestingHelper(const gfx::Rect& work_area, | |
jennb
2011/08/23 20:28:34
Why is a helper needed?
jianli
2011/08/26 00:18:16
Removed. Not needed any more.
| |
126 AutoHideBottomBar* auto_hide_bottom_bar); | |
127 | |
87 Panels panels_; | 128 Panels panels_; |
88 | 129 |
89 // Stores the panels that are pending to remove. We want to delay the removal | 130 // Stores the panels that are pending to remove. We want to delay the removal |
90 // when we're in the process of the dragging. | 131 // when we're in the process of the dragging. |
91 Panels panels_pending_to_remove_; | 132 Panels panels_pending_to_remove_; |
92 | 133 |
93 // Current work area used in computing the panel bounds. | 134 // Current work area used in computing the panel bounds. |
135 // If the always-on-top bottom bar, like Windows taskbar or MacOSX dock, is | |
136 // always visible, it should not be included in the work area. Otherwise, the | |
137 // work area includes the potential area that would be taken by the bottom | |
138 // bar when it becomes visible. | |
94 gfx::Rect work_area_; | 139 gfx::Rect work_area_; |
95 | 140 |
96 // Used in computing the bounds of the next panel. | 141 // Used in computing the bounds of the next panel. |
97 int max_width_; | 142 int max_width_; |
98 int max_height_; | 143 int max_height_; |
99 int min_x_; | |
100 int current_x_; | 144 int current_x_; |
101 int bottom_edge_y_; | |
102 | 145 |
103 // Panel to drag. | 146 // Panel to drag. |
104 size_t dragging_panel_index_; | 147 size_t dragging_panel_index_; |
105 | 148 |
106 // Original x coordinate of the panel to drag. This is used to get back to | 149 // Original x coordinate of the panel to drag. This is used to get back to |
107 // the original position when we cancel the dragging. | 150 // the original position when we cancel the dragging. |
108 int dragging_panel_original_x_; | 151 int dragging_panel_original_x_; |
109 | 152 |
110 // Bounds of the panel to drag. It is first set to the original bounds when | 153 // Bounds of the panel to drag. It is first set to the original bounds when |
111 // the dragging happens. Then it is updated to the position that will be set | 154 // the dragging happens. Then it is updated to the position that will be set |
112 // to when the dragging ends. | 155 // to when the dragging ends. |
113 gfx::Rect dragging_panel_bounds_; | 156 gfx::Rect dragging_panel_bounds_; |
114 | 157 |
158 scoped_refptr<AutoHideBottomBar> auto_hide_bottom_bar_; | |
159 | |
160 DelayedTitlebarAction delayed_titlebar_action_; | |
161 | |
162 ScopedRunnableMethodFactory<PanelManager> method_factory_; | |
163 | |
115 DISALLOW_COPY_AND_ASSIGN(PanelManager); | 164 DISALLOW_COPY_AND_ASSIGN(PanelManager); |
116 }; | 165 }; |
117 | 166 |
118 #endif // CHROME_BROWSER_UI_PANELS_PANEL_MANAGER_H_ | 167 #endif // CHROME_BROWSER_UI_PANELS_PANEL_MANAGER_H_ |
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