Add spinner UI to show bluetooth is discovering devices.

ui/views/controls/throbber.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 UI_VIEWS_CONTROLS_THROBBER_H_
 #define UI_VIEWS_CONTROLS_THROBBER_H_
 
 #include "base/basictypes.h"
 #include "base/compiler_specific.h"
 #include "base/time.h"
@@ skipping 18 matching lines @@
   Throbber(int frame_time_ms, bool paint_while_stopped, gfx::ImageSkia* frames);
   virtual ~Throbber();
 
   // Start and stop the throbber animation
   virtual void Start();
   virtual void Stop();
 
   // Set custom throbber frames. Otherwise IDR_THROBBER is loaded.
   void SetFrames(const gfx::ImageSkia* frames);
 
+  void set_interactive(bool interactive) { interactive_ = interactive; }
+
   // Overridden from View:
   virtual gfx::Size GetPreferredSize() OVERRIDE;
   virtual void OnPaint(gfx::Canvas* canvas) OVERRIDE;
+  virtual bool HitTestRect(const gfx::Rect& rect) const OVERRIDE;

[sadrul, 2013/02/05 02:31:42]

You can do this by overriding HasHitTestMask too. I seem to remember that is the
preferred way. But I don't remember if that is really the case.

 
  protected:
   // Specifies whether the throbber is currently animating or not
   bool running_;
 
  private:
   void Run();
 
   bool paint_while_stopped_;
   int frame_count_;  // How many frames we have.
   base::Time start_time_;  // Time when Start was called.
   const gfx::ImageSkia* frames_;  // Frames images.
   base::TimeDelta frame_time_;  // How long one frame is displayed.
   base::RepeatingTimer<Throbber> timer_;  // Used to schedule Run calls.
 
+  // A flag controlling hit test handling for interactivity.
+  bool interactive_;
+
   DISALLOW_COPY_AND_ASSIGN(Throbber);
 };
 
 // A SmoothedThrobber is a throbber that is representing potentially short
 // and nonoverlapping bursts of work.  SmoothedThrobber ignores small
 // pauses in the work stops and starts, and only starts its throbber after
 // a small amount of work time has passed.
 class VIEWS_EXPORT SmoothedThrobber : public Throbber {
  public:
   explicit SmoothedThrobber(int frame_delay_ms);
@@ skipping 51 matching lines @@
 
   // The checkmark image.
   const gfx::ImageSkia* checkmark_;
 
   DISALLOW_COPY_AND_ASSIGN(CheckmarkThrobber);
 };
 
 }  // namespace views
 
 #endif  // UI_VIEWS_CONTROLS_THROBBER_H_