third_party/WebKit/Source/platform/exported/WebScrollbarImpl.h

/*
 * Copyright (C) 2012 Google Inc. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1.  Redistributions of source code must retain the above copyright
 *     notice, this list of conditions and the following disclaimer.
 * 2.  Redistributions in binary form must reproduce the above copyright
 *     notice, this list of conditions and the following disclaimer in the
 *     documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS BE LIABLE FOR
 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

#ifndef WebScrollbarImpl_h
#define WebScrollbarImpl_h

#include "platform/PlatformExport.h"
#include "platform/heap/Handle.h"
#include "public/platform/WebScrollbar.h"
#include "wtf/Allocator.h"
#include "wtf/Noncopyable.h"

namespace blink {

class Scrollbar;
class PLATFORM_EXPORT WebScrollbarImpl final : public WebScrollbar {
  USING_FAST_MALLOC(WebScrollbarImpl);
  WTF_MAKE_NONCOPYABLE(WebScrollbarImpl);

 public:
  static WebScrollbarImpl* create(Scrollbar* scrollbar) {
    return new WebScrollbarImpl(scrollbar);
  }

  // Implement WebScrollbar methods
  bool isOverlay() const override;
  int value() const override;
  WebPoint location() const override;
  WebSize size() const override;
  bool enabled() const override;
  int maximum() const override;
  int totalSize() const override;
  bool isScrollableAreaActive() const override;
  void getTickmarks(WebVector<WebRect>& tickmarks) const override;
  ScrollbarControlSize controlSize() const override;
  ScrollbarPart pressedPart() const override;
  ScrollbarPart hoveredPart() const override;
  ScrollbarOverlayStyle scrollbarOverlayStyle() const override;
  bool isCustomScrollbar() const override;
  Orientation orientation() const override;
  bool isLeftSideVerticalScrollbar() const override;
  float elasticOverscroll() const override;
  void setElasticOverscroll(float) override;

 private:
  explicit WebScrollbarImpl(Scrollbar*);

  Persistent<Scrollbar> m_scrollbar;
};

}  // namespace blink

#endif