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/bubble/bubble_border.h"
  15 #include "ui/views/controls/image_view.h"
  16 #include "ui/views/mouse_watcher.h"
  17 #include "ui/views/widget/widget_observer.h"
  18
  19 namespace autofill {
  20
  21 class InfoBubble;
  22
  23 // A tooltip icon that shows a bubble on hover. Looks like (?).
  24 class TooltipIcon : public views::ImageView,
  25                     public views::MouseWatcherListener,
  26                     public views::WidgetObserver {
  27  public:
  28   static const char kViewClassName[];
  29
  30   explicit TooltipIcon(const base::string16& tooltip);
  31   ~TooltipIcon() override;
  32
  33   // views::ImageView:
  34   const char* GetClassName() const override;
  35   void OnMouseEntered(const ui::MouseEvent& event) override;
  36   void OnMouseExited(const ui::MouseEvent& event) override;
  37   void OnGestureEvent(ui::GestureEvent* event) override;
  38   void GetAccessibleState(ui::AXViewState* state) override;
  39
  40   // views::MouseWatcherListener:
  41   void MouseMovedOutOfHost() override;
  42
  43   // views::WidgetObserver:
  44   void OnWidgetDestroyed(views::Widget* widget) override;
  45
  46   void set_bubble_arrow(views::BubbleBorder::Arrow arrow) {
  47     bubble_arrow_ = arrow;
  48   }
  49
  50  private:
  51   // Changes the color to reflect the hover state.
  52   void SetDrawAsHovered(bool hovered);
  53
  54   // Creates and shows |bubble_|. If |bubble_| already exists, just cancels a
  55   // potential close timer.
  56   void ShowBubble();
  57
  58   // Hides |bubble_| if necessary.
  59   void HideBubble();
  60
  61   // The text to show in a bubble when hovered.
  62   base::string16 tooltip_;
  63
  64   // Whether the mouse is inside this tooltip.
  65   bool mouse_inside_;
  66
  67   // A bubble shown on hover. Weak; owns itself. NULL while hiding.
  68   InfoBubble* bubble_;
  69
  70   // The position of the bubble's arrow.
  71   views::BubbleBorder::Arrow bubble_arrow_;
  72
  73   // A timer to delay showing |bubble_|.
  74   base::OneShotTimer<TooltipIcon> show_timer_;
  75
  76   // A watcher that keeps |bubble_| open if the user's mouse enters it.
  77   scoped_ptr<views::MouseWatcher> mouse_watcher_;
  78
  79   ScopedObserver<views::Widget, TooltipIcon> observer_;
  80
  81   DISALLOW_COPY_AND_ASSIGN(TooltipIcon);
  82 };
  83
  84 }  // namespace autofill
  85
  86 #endif  // CHROME_BROWSER_UI_VIEWS_AUTOFILL_TOOLTIP_ICON_H_