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 class OverflowBubbleView;
  23 class ShelfLayoutManager;
  24 class ShelfView;
  25
  26 // OverflowBubble displays the overflown launcher items in a bubble.
  27 class OverflowBubble : public ui::EventHandler,
  28                        public views::WidgetObserver {
  29  public:
  30   OverflowBubble();
  31   ~OverflowBubble() override;
  32
  33   // Shows an bubble pointing to |anchor| with |shelf_view| as its content.
  34   void Show(views::View* anchor, ShelfView* shelf_view);
  35
  36   void Hide();
  37
  38   // This method as name indicates will hide bubble and schedule paint
  39   // for overflow button.
  40   void HideBubbleAndRefreshButton();
  41
  42   bool IsShowing() const { return !!bubble_; }
  43   ShelfView* shelf_view() { return shelf_view_; }
  44   OverflowBubbleView* bubble_view() { return bubble_; }
  45
  46  private:
  47   void ProcessPressedEvent(ui::LocatedEvent* event);
  48
  49   // Overridden from ui::EventHandler:
  50   void OnMouseEvent(ui::MouseEvent* event) override;
  51   void OnTouchEvent(ui::TouchEvent* event) override;
  52
  53   // Overridden from views::WidgetObserver:
  54   void OnWidgetDestroying(views::Widget* widget) override;
  55
  56   OverflowBubbleView* bubble_;  // Owned by views hierarchy.
  57   views::View* anchor_;  // Owned by ShelfView.
  58   ShelfView* shelf_view_;  // Owned by |bubble_|.
  59
  60   DISALLOW_COPY_AND_ASSIGN(OverflowBubble);
  61 };
  62
  63 }  // namespace ash
  64
  65 #endif  // ASH_SHELF_OVERFLOW_BUBBLE_H_