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// Copyright (c) 2011 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef UI_VIEWS_CONTROLS_MENU_MENU_SCROLL_VIEW_CONTAINER_H_
#define UI_VIEWS_CONTROLS_MENU_MENU_SCROLL_VIEW_CONTAINER_H_
#include "base/macros.h"
#include "ui/views/bubble/bubble_border.h"
#include "ui/views/controls/menu/menu_types.h"
#include "ui/views/view.h"
namespace views {
class MenuItemView;
class SubmenuView;
// MenuScrollViewContainer contains the SubmenuView (through a MenuScrollView)
// and two scroll buttons. The scroll buttons are only visible and enabled if
// the preferred height of the SubmenuView is bigger than our bounds.
class MenuScrollViewContainer : public View {
public:
explicit MenuScrollViewContainer(SubmenuView* content_view);
// Returns the buttons for scrolling up/down.
View* scroll_down_button() const { return scroll_down_button_; }
View* scroll_up_button() const { return scroll_up_button_; }
// External function to check if the bubble border is used.
bool HasBubbleBorder() const;
// Offsets the Arrow from the default location.
void SetBubbleArrowOffset(int offset);
void SetFootnoteView(View* view);
// View overrides.
gfx::Size CalculatePreferredSize() const override;
void Layout() override;
void OnPaintBackground(gfx::Canvas* canvas) override;
void GetAccessibleNodeData(ui::AXNodeData* node_data) override;
void OnNativeThemeChanged(const ui::NativeTheme* theme) override;
protected:
// View override.
void OnBoundsChanged(const gfx::Rect& previous_bounds) override;
private:
// Create a default border or bubble border, as appropriate.
void CreateBorder();
// Create the default border.
void CreateDefaultBorder();
// Create the bubble border.
void CreateBubbleBorder();
BubbleBorder::Arrow BubbleBorderTypeFromAnchor(MenuAnchorPosition anchor);
// Returns the last item in the menu if it is of type HIGHLIGHTED.
MenuItemView* GetFootnote() const;
class MenuScrollView;
// The scroll buttons.
View* scroll_up_button_;
View* scroll_down_button_;
// The scroll view.
MenuScrollView* scroll_view_;
// The content view.
SubmenuView* content_view_;
// If set the currently set border is a bubble border.
BubbleBorder::Arrow arrow_ = BubbleBorder::NONE;
// Weak reference to the currently set border.
BubbleBorder* bubble_border_ = nullptr;
// Corner radius of the background.
int corner_radius_ = 0;
DISALLOW_COPY_AND_ASSIGN(MenuScrollViewContainer);
};
} // namespace views
#endif // UI_VIEWS_CONTROLS_MENU_MENU_SCROLL_VIEW_CONTAINER_H_
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