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      1 // Copyright 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_AUTOFILL_TOOLTIP_ICON_H_
      6 #define CHROME_BROWSER_UI_VIEWS_AUTOFILL_TOOLTIP_ICON_H_
      7 
      8 #include "base/basictypes.h"
      9 #include "base/compiler_specific.h"
     10 #include "base/memory/scoped_ptr.h"
     11 #include "base/scoped_observer.h"
     12 #include "base/strings/string16.h"
     13 #include "base/timer/timer.h"
     14 #include "ui/views/controls/image_view.h"
     15 #include "ui/views/mouse_watcher.h"
     16 #include "ui/views/widget/widget_observer.h"
     17 
     18 namespace autofill {
     19 
     20 class InfoBubble;
     21 
     22 // A tooltip icon that shows a bubble on hover. Looks like (?).
     23 class TooltipIcon : public views::ImageView,
     24                     public views::MouseWatcherListener,
     25                     public views::WidgetObserver {
     26  public:
     27   static const char kViewClassName[];
     28 
     29   explicit TooltipIcon(const base::string16& tooltip);
     30   virtual ~TooltipIcon();
     31 
     32   // views::ImageView:
     33   virtual const char* GetClassName() const OVERRIDE;
     34   virtual void OnMouseEntered(const ui::MouseEvent& event) OVERRIDE;
     35   virtual void OnMouseExited(const ui::MouseEvent& event) OVERRIDE;
     36   virtual void OnGestureEvent(ui::GestureEvent* event) OVERRIDE;
     37   virtual void GetAccessibleState(ui::AXViewState* state) OVERRIDE;
     38 
     39   // views::MouseWatcherListener:
     40   virtual void MouseMovedOutOfHost() OVERRIDE;
     41 
     42   // views::WidgetObserver:
     43   virtual void OnWidgetDestroyed(views::Widget* widget) OVERRIDE;
     44 
     45  private:
     46   // Changes this view's image to the resource indicated by |idr|.
     47   void ChangeImageTo(int idr);
     48 
     49   // Creates and shows |bubble_|. If |bubble_| already exists, just cancels a
     50   // potential close timer.
     51   void ShowBubble();
     52 
     53   // Hides |bubble_| if necessary.
     54   void HideBubble();
     55 
     56   // The text to show in a bubble when hovered.
     57   base::string16 tooltip_;
     58 
     59   // Whether the mouse is inside this tooltip.
     60   bool mouse_inside_;
     61 
     62   // A bubble shown on hover. Weak; owns itself. NULL while hiding.
     63   InfoBubble* bubble_;
     64 
     65   // A timer to delay showing |bubble_|.
     66   base::OneShotTimer<TooltipIcon> show_timer_;
     67 
     68   // A watcher that keeps |bubble_| open if the user's mouse enters it.
     69   scoped_ptr<views::MouseWatcher> mouse_watcher_;
     70 
     71   ScopedObserver<views::Widget, TooltipIcon> observer_;
     72 
     73   DISALLOW_COPY_AND_ASSIGN(TooltipIcon);
     74 };
     75 
     76 }  // namespace autofill
     77 
     78 #endif  // CHROME_BROWSER_UI_VIEWS_AUTOFILL_TOOLTIP_ICON_H_
     79