chrome/browser/ui/views/panels/panel_view.h

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