Add spinner UI to show bluetooth is discovering devices.

ash/system/tray/tray_views.h

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef ASH_SYSTEM_TRAY_TRAY_VIEWS_H_
 #define ASH_SYSTEM_TRAY_TRAY_VIEWS_H_
 
 #include "ash/ash_export.h"
 #include "ash/shelf_types.h"
 #include "ui/gfx/font.h"
 #include "ui/gfx/size.h"
 #include "ui/views/controls/button/custom_button.h"
 #include "ui/views/controls/button/image_button.h"
 #include "ui/views/controls/button/label_button.h"
 #include "ui/views/controls/button/label_button_border.h"
 #include "ui/views/controls/image_view.h"
 #include "ui/views/controls/scroll_view.h"
 #include "ui/views/controls/slider.h"
+#include "ui/views/controls/throbber.h"
 #include "ui/views/view.h"
 
 typedef unsigned int SkColor;
 
 namespace gfx {
 class ImageSkia;
 }
 
 namespace views {
 class Label;
@@ skipping 235 matching lines @@
   class TrayBarButton;
 
   TrayBarButton* image_;
   views::Label* title_;
   int width_;
   int image_height_;
 
   DISALLOW_COPY_AND_ASSIGN(TrayBarButtonWithTitle);
 };
 
+// A SmoothedThrobber with tooltip.
+class SystemTrayThrobber : public views::SmoothedThrobber {
+ public:
+  SystemTrayThrobber(int frame_delay_ms);
+  virtual ~SystemTrayThrobber();
+
+  void SetTooltipText(const string16& tooltip_text);
+
+  // Overriden from views::View.
+  virtual bool GetTooltipText(
+        const gfx::Point& p, string16* tooltip) const OVERRIDE;
+
+ private:
+  // The current tooltip text.
+  string16 tooltip_text_;
+
+  DISALLOW_COPY_AND_ASSIGN(SystemTrayThrobber);
+};
+
+// A View containing a SystemTrayThrobber with animation for starting/stopping.
+class ThrobberView : public views::View {
+ public:
+  ThrobberView();
+  virtual ~ThrobberView();
+
+  void Start();
+  void Stop();
+  void SetTooltipText(const string16& tooltip_text);
+
+  // Overriden from views::View.
+  virtual gfx::Size GetPreferredSize() OVERRIDE;
+  virtual void Layout() OVERRIDE;
+  virtual bool GetTooltipText(
+      const gfx::Point& p, string16* tooltip) const OVERRIDE;
+
+ private:
+  // Schedules animation for starting/stopping throbber.
+  void ScheduleAnimation(bool start_throbber);
+
+  SystemTrayThrobber* throbber_;
+
+  // The current tooltip text.
+  string16 tooltip_text_;
+
+  DISALLOW_COPY_AND_ASSIGN(ThrobberView);
+};
+
 // The 'special' looking row in the uber-tray popups. This is usually the bottom
 // row in the popups, and has a fixed height.
 class SpecialPopupRow : public views::View {
  public:
   SpecialPopupRow();
   virtual ~SpecialPopupRow();
 
   void SetTextLabel(int string_id, ViewClickListener* listener);
   void SetContent(views::View* view);
 
   void AddButton(TrayPopupHeaderButton* button);
+  void AddThrobber(ThrobberView* throbber);
 
   views::View* content() const { return content_; }
 
  private:
   // Overridden from views::View.
   virtual gfx::Size GetPreferredSize() OVERRIDE;
   virtual void Layout() OVERRIDE;
 
   views::View* content_;
   views::View* button_container_;
@@ skipping 10 matching lines @@
 void SetTrayImageItemBorder(views::View* tray_view, ShelfAlignment alignment);
 // Sets the empty border around a label tray item for adjusting the space
 // around it.
 void SetTrayLabelItemBorder(TrayItemView* tray_view,
                             ShelfAlignment alignment);
 
 }  // namespace internal
 }  // namespace ash
 
 #endif  // ASH_SYSTEM_TRAY_TRAY_VIEWS_H_