ash/shelf/overflow_bubble_view.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_VIEW_H_
   6 #define ASH_SHELF_OVERFLOW_BUBBLE_VIEW_H_
   7
   8 #include "ash/ash_export.h"
   9 #include "base/basictypes.h"
  10 #include "base/compiler_specific.h"
  11 #include "ui/views/bubble/bubble_delegate.h"
  12
  13 namespace ash {
  14 class ShelfLayoutManager;
  15 class ShelfView;
  16
  17 namespace test {
  18 class OverflowBubbleViewTestAPI;
  19 }
  20
  21 // OverflowBubbleView hosts a ShelfView to display overflown items.
  22 // Exports to access this class from OverflowBubbleViewTestAPI.
  23 class ASH_EXPORT OverflowBubbleView : public views::BubbleDelegateView {
  24  public:
  25   OverflowBubbleView();
  26   ~OverflowBubbleView() override;
  27
  28   void InitOverflowBubble(views::View* anchor, ShelfView* shelf_view);
  29
  30   // views::BubbleDelegateView overrides:
  31   gfx::Rect GetBubbleBounds() override;
  32
  33  private:
  34   friend class test::OverflowBubbleViewTestAPI;
  35
  36   bool IsHorizontalAlignment() const;
  37
  38   const gfx::Size GetContentsSize() const;
  39
  40   // Gets arrow location based on shelf alignment.
  41   views::BubbleBorder::Arrow GetBubbleArrow() const;
  42
  43   void ScrollByXOffset(int x_offset);
  44   void ScrollByYOffset(int y_offset);
  45
  46   // views::View overrides:
  47   gfx::Size GetPreferredSize() const override;
  48   void Layout() override;
  49   void ChildPreferredSizeChanged(views::View* child) override;
  50   bool OnMouseWheel(const ui::MouseWheelEvent& event) override;
  51
  52   // ui::EventHandler overrides:
  53   void OnScrollEvent(ui::ScrollEvent* event) override;
  54
  55   ShelfLayoutManager* GetShelfLayoutManager() const;
  56
  57   ShelfView* shelf_view_;  // Owned by views hierarchy.
  58   gfx::Vector2d scroll_offset_;
  59
  60   DISALLOW_COPY_AND_ASSIGN(OverflowBubbleView);
  61 };
  62
  63 }  // namespace ash
  64
  65 #endif  // ASH_SHELF_OVERFLOW_BUBBLE_VIEW_H_