/*
 * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
 *           (C) 1999 Antti Koivisto (koivisto@kde.org)
 * Copyright (C) 2004, 2008, 2009, 2011 Apple Inc. All rights reserved.
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Library General Public
 * License as published by the Free Software Foundation; either
 * version 2 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Library General Public License for more details.
 *
 * You should have received a copy of the GNU Library General Public License
 * along with this library; see the file COPYING.LIB.  If not, write to
 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
 * Boston, MA 02110-1301, USA.
 *
 */

#ifndef HTMLAreaElement_h
#define HTMLAreaElement_h

#include "core/CoreExport.h"
#include "core/html/HTMLAnchorElement.h"
#include "platform/geometry/LayoutRect.h"
#include <memory>

namespace blink {

class HitTestResult;
class HTMLImageElement;
class Path;

class CORE_EXPORT HTMLAreaElement final : public HTMLAnchorElement {
  DEFINE_WRAPPERTYPEINFO();

 public:
  DECLARE_NODE_FACTORY(HTMLAreaElement);

  bool isDefault() const { return m_shape == Default; }

  // |containerObject| in the following functions is an object (normally a
  // LayoutImage) which references the containing image map of this area. There
  // might be multiple objects referencing the same map. For these functions,
  // the effective geometry of this map will be calculated based on the
  // specified container object, e.g.  the rectangle of the default shape will
  // be the border box rect of the container object, and effective zoom factor
  // of the container object will be applied on non-default shape.
  bool pointInArea(const LayoutPoint&,
                   const LayoutObject* containerObject) const;
  LayoutRect computeAbsoluteRect(const LayoutObject* containerObject) const;
  Path getPath(const LayoutObject* containerObject) const;

  // The parent map's image.
  HTMLImageElement* imageElement() const;

 private:
  explicit HTMLAreaElement(Document&);
  ~HTMLAreaElement();

  void parseAttribute(const QualifiedName&,
                      const AtomicString&,
                      const AtomicString&) override;
  bool isKeyboardFocusable() const override;
  bool isMouseFocusable() const override;
  bool layoutObjectIsFocusable() const override;
  void updateFocusAppearance(SelectionBehaviorOnFocus) override;
  void setFocused(bool) override;

  enum Shape { Default, Poly, Rect, Circle };
  void invalidateCachedPath();

  mutable std::unique_ptr<Path> m_path;
  Vector<double> m_coords;
  Shape m_shape;
};

}  // namespace blink

#endif  // HTMLAreaElement_h