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// Copyright (c) 2006-2009 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 VIEWS_CONTROLS_SCROLLBAR_NATIVE_SCROLL_BAR_H_
#define VIEWS_CONTROLS_SCROLLBAR_NATIVE_SCROLL_BAR_H_
#pragma once
#include <string>
#include "views/controls/scrollbar/scroll_bar.h"
#include "views/view.h"
namespace views {
class NativeScrollBarWrapper;
// The NativeScrollBar class is a scrollbar that uses platform's
// native control.
class NativeScrollBar : public ScrollBar {
public:
// The scroll-bar's class name.
static const char kViewClassName[];
// Create new scrollbar, either horizontal or vertical.
explicit NativeScrollBar(bool is_horiz);
virtual ~NativeScrollBar();
// Return the system sizes.
static int GetHorizontalScrollBarHeight();
static int GetVerticalScrollBarWidth();
private:
// Overridden from View.
virtual gfx::Size GetPreferredSize();
virtual void Layout();
virtual void ViewHierarchyChanged(bool is_add, View* parent, View* child);
virtual std::string GetClassName() const;
// Overrideen from View for keyboard UI purpose.
virtual bool OnKeyPressed(const KeyEvent& event);
virtual bool OnMouseWheel(const MouseWheelEvent& e);
// Overridden from ScrollBar.
virtual void Update(int viewport_size, int content_size, int current_pos);
virtual int GetPosition() const;
virtual int GetLayoutSize() const;
// init border
NativeScrollBarWrapper* native_wrapper_;
DISALLOW_COPY_AND_ASSIGN(NativeScrollBar);
};
} // namespace views
#endif // VIEWS_CONTROLS_SCROLLBAR_NATIVE_SCROLL_BAR_H_
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