panel_view.h revision 5f1c94371a64b3196d4be9466099bb892df9b88e 
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 CHROME_BROWSER_UI_VIEWS_PANELS_PANEL_VIEW_H_
6#define CHROME_BROWSER_UI_VIEWS_PANELS_PANEL_VIEW_H_
7
8#include "base/memory/scoped_ptr.h"
9#include "chrome/browser/ui/panels/native_panel.h"
10#include "ui/gfx/animation/animation_delegate.h"
11#include "ui/views/widget/widget_delegate.h"
12#include "ui/views/widget/widget_observer.h"
13
14#if defined(OS_WIN)
15#include "ui/base/win/hwnd_subclass.h"
16#endif
17
18class AutoKeepAlive;
19class Panel;
20class PanelBoundsAnimation;
21class PanelFrameView;
22class TaskbarWindowThumbnailerWin;
23
24namespace views {
25class WebView;
26}
27
28class PanelView : public NativePanel,
29                  public views::WidgetObserver,
30                  public views::WidgetDelegateView,
31#if defined(OS_WIN)
32                  public ui::HWNDMessageFilter,
33#endif
34                  public gfx::AnimationDelegate {
35 public:
36  // The size of inside area used for mouse resizing.
37  static const int kResizeInsideBoundsSize = 5;
38
39  PanelView(Panel* panel, const gfx::Rect& bounds, bool always_on_top);
40  virtual ~PanelView();
41
42  // Overridden from NativePanel:
43  virtual void ShowPanel() OVERRIDE;
44  virtual void ShowPanelInactive() OVERRIDE;
45  virtual gfx::Rect GetPanelBounds() const OVERRIDE;
46  virtual void SetPanelBounds(const gfx::Rect& bounds) OVERRIDE;
47  virtual void SetPanelBoundsInstantly(const gfx::Rect& bounds) OVERRIDE;
48  virtual void ClosePanel() OVERRIDE;
49  virtual void ActivatePanel() OVERRIDE;
50  virtual void DeactivatePanel() OVERRIDE;
51  virtual bool IsPanelActive() const OVERRIDE;
52  virtual void PreventActivationByOS(bool prevent_activation) OVERRIDE;
53  virtual gfx::NativeWindow GetNativePanelWindow() OVERRIDE;
54  virtual void UpdatePanelTitleBar() OVERRIDE;
55  virtual void UpdatePanelLoadingAnimations(bool should_animate) OVERRIDE;
56  virtual void PanelWebContentsFocused(content::WebContents* contents) OVERRIDE;
57  virtual void PanelCut() OVERRIDE;
58  virtual void PanelCopy() OVERRIDE;
59  virtual void PanelPaste() OVERRIDE;
60  virtual void DrawAttention(bool draw_attention) OVERRIDE;
61  virtual bool IsDrawingAttention() const OVERRIDE;
62  virtual void HandlePanelKeyboardEvent(
63      const content::NativeWebKeyboardEvent& event) OVERRIDE;
64  virtual void FullScreenModeChanged(bool is_full_screen) OVERRIDE;
65  virtual bool IsPanelAlwaysOnTop() const OVERRIDE;
66  virtual void SetPanelAlwaysOnTop(bool on_top) OVERRIDE;
67  virtual void UpdatePanelMinimizeRestoreButtonVisibility() OVERRIDE;
68  virtual void SetWindowCornerStyle(panel::CornerStyle corner_style) OVERRIDE;
69  virtual void PanelExpansionStateChanging(
70      Panel::ExpansionState old_state,
71      Panel::ExpansionState new_state) OVERRIDE;
72  virtual void AttachWebContents(content::WebContents* contents) OVERRIDE;
73  virtual void DetachWebContents(content::WebContents* contents) OVERRIDE;
74  virtual gfx::Size WindowSizeFromContentSize(
75      const gfx::Size& content_size) const OVERRIDE;
76  virtual gfx::Size ContentSizeFromWindowSize(
77      const gfx::Size& window_size) const OVERRIDE;
78  virtual int TitleOnlyHeight() const OVERRIDE;
79  virtual void MinimizePanelBySystem() OVERRIDE;
80  virtual bool IsPanelMinimizedBySystem() const OVERRIDE;
81  virtual bool IsPanelShownOnActiveDesktop() const OVERRIDE;
82  virtual void ShowShadow(bool show) OVERRIDE;
83  virtual NativePanelTesting* CreateNativePanelTesting() OVERRIDE;
84
85  // Overridden from views::View:
86  virtual gfx::Size GetMinimumSize() const OVERRIDE;
87  virtual gfx::Size GetMaximumSize() const OVERRIDE;
88
89  // Return true if the mouse event is handled.
90  // |mouse_location| is in screen coordinate system.
91  bool OnTitlebarMousePressed(const gfx::Point& mouse_location);
92  bool OnTitlebarMouseDragged(const gfx::Point& mouse_location);
93  bool OnTitlebarMouseReleased(panel::ClickModifier modifier);
94  bool OnTitlebarMouseCaptureLost();
95
96  PanelFrameView* GetFrameView() const;
97  bool IsAnimatingBounds() const;
98
99  Panel* panel() const { return panel_.get(); }
100  views::Widget* window() const { return window_; }
101  bool force_to_paint_as_inactive() const {
102    return force_to_paint_as_inactive_;
103  }
104
105  // PanelStackView might want to update the stored bounds directly since it
106  // has already taken care of updating the window bounds directly.
107  void set_cached_bounds_directly(const gfx::Rect& bounds) { bounds_ = bounds; }
108
109 private:
110  enum MouseDraggingState {
111    NO_DRAGGING,
112    DRAGGING_STARTED,
113    DRAGGING_ENDED
114  };
115
116  // Overridden from views::WidgetDelegate:
117  virtual void OnDisplayChanged() OVERRIDE;
118  virtual void OnWorkAreaChanged() OVERRIDE;
119  virtual bool WillProcessWorkAreaChange() const OVERRIDE;
120  virtual views::View* GetContentsView() OVERRIDE;
121  virtual views::NonClientFrameView* CreateNonClientFrameView(
122      views::Widget* widget) OVERRIDE;
123  virtual bool CanResize() const OVERRIDE;
124  virtual bool CanMaximize() const OVERRIDE;
125  virtual views::Widget* GetWidget() OVERRIDE;
126  virtual const views::Widget* GetWidget() const OVERRIDE;
127  virtual base::string16 GetWindowTitle() const OVERRIDE;
128  virtual gfx::ImageSkia GetWindowAppIcon() OVERRIDE;
129  virtual gfx::ImageSkia GetWindowIcon() OVERRIDE;
130  virtual void WindowClosing() OVERRIDE;
131  virtual void DeleteDelegate() OVERRIDE;
132  virtual void OnWindowBeginUserBoundsChange() OVERRIDE;
133  virtual void OnWindowEndUserBoundsChange() OVERRIDE;
134
135  // Overridden from views::View:
136  virtual void Layout() OVERRIDE;
137  virtual bool AcceleratorPressed(const ui::Accelerator& accelerator) OVERRIDE;
138
139  // Overridden from views::WidgetObserver:
140  virtual void OnWidgetDestroying(views::Widget* widget) OVERRIDE;
141  virtual void OnWidgetActivationChanged(views::Widget* widget,
142                                         bool active) OVERRIDE;
143  virtual void OnWidgetBoundsChanged(views::Widget* widget,
144                                     const gfx::Rect& new_bounds) OVERRIDE;
145
146  // Overridden from ui::HWNDMessageFilter:
147#if defined(OS_WIN)
148  virtual bool FilterMessage(HWND hwnd,
149                             UINT message,
150                             WPARAM w_param,
151                             LPARAM l_param,
152                             LRESULT* l_result) OVERRIDE;
153#endif
154
155  // Overridden from AnimationDelegate:
156  virtual void AnimationEnded(const gfx::Animation* animation) OVERRIDE;
157  virtual void AnimationProgressed(const gfx::Animation* animation) OVERRIDE;
158
159  void UpdateLoadingAnimations(bool should_animate);
160  void UpdateWindowTitle();
161  void UpdateWindowIcon();
162  void SetBoundsInternal(const gfx::Rect& bounds, bool animate);
163  bool EndDragging(bool cancelled);
164
165  // Sets the bounds of the underlying window to |new_bounds|. Note that this
166  // might update the window style to work around the minimum overlapped
167  // window height limitation.
168  void SetWidgetBounds(const gfx::Rect& new_bounds);
169
170#if defined(OS_WIN)
171  // Sets |attribute_value_to_set| and/or clears |attribute_value_to_reset| for
172  // the attibute denoted by |attribute_index|. This is used to update the style
173  // or extended style for the native window.
174  void UpdateWindowAttribute(int attribute_index,
175                             int attribute_value_to_set,
176                             int attribute_value_to_reset,
177                             bool update_frame);
178#endif
179
180  scoped_ptr<Panel> panel_;
181  gfx::Rect bounds_;
182
183  // The window that holds all panel views. Lifetime managed by native widget.
184  // See widget.h.
185  views::Widget* window_;
186
187  // Close gets called more than once, so use this to do one-time clean up once.
188  bool window_closed_;
189
190  // The view hosting the web contents. Will be destroyed when child views
191  // of this class are destroyed.
192  views::WebView* web_view_;
193
194  // True if the panel should always stay on top of other windows.
195  bool always_on_top_;
196
197  // Is the panel receiving the focus?
198  bool focused_;
199
200  // True if the user is resizing the panel.
201  bool user_resizing_;
202
203#if defined(OS_WIN)
204  // True if the user is resizing the interior edge of a stack.
205  bool user_resizing_interior_stacked_panel_edge_;
206
207  // The original full size of the resizing panel before the resizing states.
208  gfx::Size original_full_size_of_resizing_panel_;
209
210  // The original full size of the panel below the resizing panel before the
211  // resizing starts.
212  gfx::Size original_full_size_of_panel_below_resizing_panel_;
213#endif
214
215
216  // Is the mouse button currently down?
217  bool mouse_pressed_;
218
219  // Location the mouse was pressed at or dragged to last time when we process
220  // the mouse event. Used in drag-and-drop.
221  // This point is represented in the screen coordinate system.
222  gfx::Point last_mouse_location_;
223
224  // Is the titlebar currently being dragged?  That is, has the cursor
225  // moved more than kDragThreshold away from its starting position?
226  MouseDraggingState mouse_dragging_state_;
227
228  // Used to animate the bounds change.
229  scoped_ptr<PanelBoundsAnimation> bounds_animator_;
230  gfx::Rect animation_start_bounds_;
231
232  // Is the panel in highlighted state to draw people's attention?
233  bool is_drawing_attention_;
234
235  // Should we force to paint the panel as inactive? This is needed when we need
236  // to capture the screenshot before an active panel goes minimized.
237  bool force_to_paint_as_inactive_;
238
239  // The last view that had focus in the panel. This is saved so that focus can
240  // be restored properly when a drag ends.
241  views::View* old_focused_view_;
242
243  scoped_ptr<AutoKeepAlive> keep_alive_;
244
245#if defined(OS_WIN)
246  // Used to provide custom taskbar thumbnail for Windows 7 and later.
247  scoped_ptr<TaskbarWindowThumbnailerWin> thumbnailer_;
248#endif
249
250  DISALLOW_COPY_AND_ASSIGN(PanelView);
251};
252
253#endif  // CHROME_BROWSER_UI_VIEWS_PANELS_PANEL_VIEW_H_
254