panel_stack_view.h revision 868fa2fe829687343ffae624259930155e16dbd8 
1// Copyright (c) 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 CHROME_BROWSER_UI_VIEWS_PANELS_PANEL_STACK_VIEW_H_
6#define CHROME_BROWSER_UI_VIEWS_PANELS_PANEL_STACK_VIEW_H_
7
8#include <list>
9#include <map>
10#include "base/basictypes.h"
11#include "base/memory/scoped_ptr.h"
12#include "chrome/browser/ui/panels/native_panel_stack_window.h"
13#include "ui/base/animation/animation_delegate.h"
14#include "ui/views/focus/widget_focus_manager.h"
15#include "ui/views/widget/widget_delegate.h"
16#include "ui/views/widget/widget_observer.h"
17
18#if defined(OS_WIN)
19#include "chrome/browser/ui/views/panels/taskbar_window_thumbnailer_win.h"
20#endif
21
22namespace ui {
23class LinearAnimation;
24}
25namespace views {
26class Widget;
27}
28
29// A native window that acts as the owner of all panels in the stack, in order
30// to make all panels appear as a single window on the taskbar or launcher.
31class PanelStackView : public NativePanelStackWindow,
32                       public views::WidgetObserver,
33                       public views::WidgetDelegateView,
34                       public views::WidgetFocusChangeListener,
35#if defined(OS_WIN)
36                       public TaskbarWindowThumbnailerDelegateWin,
37#endif
38                       public ui::AnimationDelegate {
39 public:
40  explicit PanelStackView(NativePanelStackWindowDelegate* delegate);
41  virtual ~PanelStackView();
42
43 protected:
44  // Overridden from NativePanelStackWindow:
45  virtual void Close() OVERRIDE;
46  virtual void AddPanel(Panel* panel) OVERRIDE;
47  virtual void RemovePanel(Panel* panel) OVERRIDE;
48  virtual void MergeWith(NativePanelStackWindow* another) OVERRIDE;
49  virtual bool IsEmpty() const OVERRIDE;
50  virtual bool HasPanel(Panel* panel) const OVERRIDE;
51  virtual void MovePanelsBy(const gfx::Vector2d& delta) OVERRIDE;
52  virtual void BeginBatchUpdatePanelBounds(bool animate) OVERRIDE;
53  virtual void AddPanelBoundsForBatchUpdate(
54      Panel* panel, const gfx::Rect& new_bounds) OVERRIDE;
55  virtual void EndBatchUpdatePanelBounds() OVERRIDE;
56  virtual bool IsAnimatingPanelBounds() const OVERRIDE;
57  virtual void Minimize() OVERRIDE;
58  virtual bool IsMinimized() const OVERRIDE;
59  virtual void DrawSystemAttention(bool draw_attention) OVERRIDE;
60  virtual void OnPanelActivated(Panel* panel) OVERRIDE;
61
62 private:
63  typedef std::list<Panel*> Panels;
64
65  // The map value is old bounds of the panel.
66  typedef std::map<Panel*, gfx::Rect> BoundsUpdates;
67
68  // Overridden from views::WidgetDelegate:
69  virtual string16 GetWindowTitle() const OVERRIDE;
70  virtual gfx::ImageSkia GetWindowAppIcon() OVERRIDE;
71  virtual gfx::ImageSkia GetWindowIcon() OVERRIDE;
72  virtual views::Widget* GetWidget() OVERRIDE;
73  virtual const views::Widget* GetWidget() const OVERRIDE;
74  virtual void DeleteDelegate() OVERRIDE;
75
76  // Overridden from views::WidgetObserver:
77  virtual void OnWidgetDestroying(views::Widget* widget) OVERRIDE;
78
79  // Overridden from views::WidgetFocusChangeListener:
80  virtual void OnNativeFocusChange(gfx::NativeView focused_before,
81                                   gfx::NativeView focused_now) OVERRIDE;
82
83  // Overridden from AnimationDelegate:
84  virtual void AnimationEnded(const ui::Animation* animation) OVERRIDE;
85  virtual void AnimationProgressed(const ui::Animation* animation) OVERRIDE;
86
87  // Updates the bounds of panels as specified in batch update data.
88  void UpdatePanelsBounds();
89
90  // Notifies the delegate that the updates of the panel bounds are completed.
91  void NotifyBoundsUpdateCompleted();
92
93  // Computes/updates the minimum bounds that could fit all panels.
94  gfx::Rect GetStackWindowBounds() const;
95  void UpdateStackWindowBounds();
96
97  views::Widget* CreateWindowWithBounds(const gfx::Rect& bounds);
98  void EnsureWindowCreated();
99
100  // Makes the stack window own the panel window such that multiple panels
101  // stacked together could appear as a single window on the taskbar or
102  // launcher.
103  static void MakeStackWindowOwnPanelWindow(Panel* panel,
104                                            PanelStackView* stack_window);
105
106#if defined(OS_WIN)
107  // Overridden from TaskbarWindowThumbnailerDelegateWin:
108  virtual std::vector<HWND> GetSnapshotWindowHandles() const OVERRIDE;
109
110  // Updates the live preview snapshot when something changes, like
111  // adding/removing/moving/resizing a stacked panel.
112  void RefreshLivePreviewThumbnail();
113
114  // Updates the bounds of the widget window in a deferred way.
115  void DeferUpdateNativeWindowBounds(HDWP defer_window_pos_info,
116                                     views::Widget* window,
117                                     const gfx::Rect& bounds);
118#endif
119
120  NativePanelStackWindowDelegate* delegate_;
121
122  views::Widget* window_;  // Weak pointer, own us.
123
124  bool is_closing_;
125
126  // Tracks all panels that are enclosed by this window.
127  Panels panels_;
128
129  // Is the taskbar icon of the underlying window being flashed in order to
130  // draw the user's attention?
131  bool is_drawing_attention_;
132
133#if defined(OS_WIN)
134  // The custom live preview snapshot is always provided for the stack window.
135  // This is because the system might not show the snapshot correctly for
136  // a small window, like collapsed panel.
137  scoped_ptr<TaskbarWindowThumbnailerWin> thumbnailer_;
138#endif
139
140  // For batch bounds update.
141  bool animate_bounds_updates_;
142  bool bounds_updates_started_;
143  BoundsUpdates bounds_updates_;
144
145  // Used to animate the bounds changes at a synchronized pace.
146  scoped_ptr<ui::LinearAnimation> bounds_animator_;
147
148  DISALLOW_COPY_AND_ASSIGN(PanelStackView);
149};
150
151#endif  // CHROME_BROWSER_UI_VIEWS_PANELS_PANEL_STACK_VIEW_H_
152