ash/shelf/overflow_bubble.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 ASH_SHELF_OVERFLOW_BUBBLE_H_
   6 #define ASH_SHELF_OVERFLOW_BUBBLE_H_
   7
   8 #include "base/basictypes.h"
   9 #include "base/compiler_specific.h"
  10 #include "ui/events/event_handler.h"
  11 #include "ui/views/widget/widget_observer.h"
  12
  13 namespace ui {
  14 class LocatedEvent;
  15 }
  16
  17 namespace views {
  18 class View;
  19 }
  20
  21 namespace ash {
  22
  23 class LauncherDelegate;
  24 class LauncherModel;
  25
  26 namespace internal {
  27
  28 class LauncherView;
  29
  30 // OverflowBubble displays the overflown launcher items in a bubble.
  31 class OverflowBubble : public ui::EventHandler,
  32                        public views::WidgetObserver {
  33  public:
  34   OverflowBubble();
  35   virtual ~OverflowBubble();
  36
  37   // Shows an bubble pointing to |anchor| with |launcher_view| as its content.
  38   void Show(views::View* anchor, LauncherView* launcher_view);
  39
  40   void Hide();
  41
  42   // This method as name indicates will hide bubble and schedule paint
  43   // for overflow button.
  44   void HideBubbleAndRefreshButton();
  45
  46   bool IsShowing() const { return !!bubble_; }
  47   LauncherView* launcher_view() { return launcher_view_; }
  48
  49  private:
  50   void ProcessPressedEvent(ui::LocatedEvent* event);
  51
  52   // Overridden from ui::EventHandler:
  53   virtual void OnMouseEvent(ui::MouseEvent* event) OVERRIDE;
  54   virtual void OnTouchEvent(ui::TouchEvent* event) OVERRIDE;
  55
  56   // Overridden from views::WidgetObserver:
  57   virtual void OnWidgetDestroying(views::Widget* widget) OVERRIDE;
  58
  59   views::View* bubble_;  // Owned by views hierarchy.
  60   views::View* anchor_;  // Owned by LauncherView.
  61   LauncherView* launcher_view_;  // Owned by |bubble_|.
  62
  63   DISALLOW_COPY_AND_ASSIGN(OverflowBubble);
  64 };
  65
  66 }  // namespace internal
  67 }  // namespace ash
  68
  69 #endif  // ASH_SHELF_OVERFLOW_BUBBLE_H_