chrome/browser/ui/views/autofill/tooltip_icon.h

   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_