/*
 * Copyright (C) 2004, 2005, 2006 Nikolas Zimmermann <zimmermann@kde.org>
 * Copyright (C) 2004, 2005, 2006, 2007, 2010 Rob Buis <buis@kde.org>
 * Copyright (C) 2014 Google, Inc.
 *
 * 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 THIRD_PARTY_BLINK_RENDERER_CORE_SVG_SVG_SVG_ELEMENT_H_
#define THIRD_PARTY_BLINK_RENDERER_CORE_SVG_SVG_SVG_ELEMENT_H_

#include "third_party/blink/renderer/core/svg/svg_animated_length.h"
#include "third_party/blink/renderer/core/svg/svg_fit_to_view_box.h"
#include "third_party/blink/renderer/core/svg/svg_graphics_element.h"
#include "third_party/blink/renderer/core/svg/svg_point.h"
#include "third_party/blink/renderer/core/svg/svg_zoom_and_pan.h"
#include "third_party/blink/renderer/platform/heap/handle.h"

namespace blink {

class SMILTimeContainer;
class SVGAngleTearOff;
class SVGLengthTearOff;
class SVGMatrixTearOff;
class SVGNumberTearOff;
class SVGPointTearOff;
class SVGTransformTearOff;
class SVGViewSpec;

class SVGSVGElement final : public SVGGraphicsElement,
                            public SVGFitToViewBox,
                            public SVGZoomAndPan {
  DEFINE_WRAPPERTYPEINFO();
  USING_GARBAGE_COLLECTED_MIXIN(SVGSVGElement);

 public:
  DECLARE_NODE_FACTORY(SVGSVGElement);

  float IntrinsicWidth() const;
  float IntrinsicHeight() const;
  FloatSize CurrentViewportSize() const;
  FloatRect CurrentViewBoxRect() const;
  const SVGPreserveAspectRatio* CurrentPreserveAspectRatio() const;

  float currentScale() const;
  void setCurrentScale(float scale);

  FloatPoint CurrentTranslate() { return translation_->Value(); }
  void SetCurrentTranslate(const FloatPoint&);
  SVGPointTearOff* currentTranslateFromJavascript();

  SMILTimeContainer* TimeContainer() const { return time_container_.Get(); }

  void pauseAnimations();
  void unpauseAnimations();
  bool animationsPaused() const;

  float getCurrentTime() const;
  void setCurrentTime(float seconds);

  // Stubs for the deprecated 'redraw' interface.
  unsigned suspendRedraw(unsigned) { return 1; }
  void unsuspendRedraw(unsigned) {}
  void unsuspendRedrawAll() {}
  void forceRedraw() {}

  StaticNodeList* getIntersectionList(SVGRectTearOff*,
                                      SVGElement* reference_element) const;
  StaticNodeList* getEnclosureList(SVGRectTearOff*,
                                   SVGElement* reference_element) const;
  bool checkIntersection(SVGElement*, SVGRectTearOff*) const;
  bool checkEnclosure(SVGElement*, SVGRectTearOff*) const;
  void deselectAll();

  static SVGNumberTearOff* createSVGNumber();
  static SVGLengthTearOff* createSVGLength();
  static SVGAngleTearOff* createSVGAngle();
  static SVGPointTearOff* createSVGPoint();
  static SVGMatrixTearOff* createSVGMatrix();
  static SVGRectTearOff* createSVGRect();
  static SVGTransformTearOff* createSVGTransform();
  static SVGTransformTearOff* createSVGTransformFromMatrix(SVGMatrixTearOff*);

  AffineTransform ViewBoxToViewTransform(float view_width,
                                         float view_height) const;

  void SetupInitialView(const String& fragment_identifier,
                        Element* anchor_node);
  bool ZoomAndPanEnabled() const;

  bool HasIntrinsicWidth() const;
  bool HasIntrinsicHeight() const;

  SVGAnimatedLength* x() const { return x_.Get(); }
  SVGAnimatedLength* y() const { return y_.Get(); }
  SVGAnimatedLength* width() const { return width_.Get(); }
  SVGAnimatedLength* height() const { return height_.Get(); }

  void Trace(blink::Visitor*) override;

 private:
  explicit SVGSVGElement(Document&);
  ~SVGSVGElement() override;

  void SetViewSpec(const SVGViewSpec*);

  void ParseAttribute(const AttributeModificationParams&) override;
  bool IsPresentationAttribute(const QualifiedName&) const override;
  bool IsPresentationAttributeWithSVGDOM(const QualifiedName&) const override;
  void CollectStyleForPresentationAttribute(
      const QualifiedName&,
      const AtomicString&,
      MutableCSSPropertyValueSet*) override;

  void AttachLayoutTree(AttachContext&) override;
  bool LayoutObjectIsNeeded(const ComputedStyle&) const override;
  LayoutObject* CreateLayoutObject(const ComputedStyle&) override;

  InsertionNotificationRequest InsertedInto(ContainerNode&) override;
  void RemovedFrom(ContainerNode&) override;

  void SvgAttributeChanged(const QualifiedName&) override;

  bool SelfHasRelativeLengths() const override;

  bool ShouldSynthesizeViewBox() const;
  void UpdateUserTransform();

  void FinishParsingChildren() override;

  enum GeometryMatchingMode { kCheckIntersection, kCheckEnclosure };

  bool CheckIntersectionOrEnclosure(const SVGElement&,
                                    const FloatRect&,
                                    GeometryMatchingMode) const;
  StaticNodeList* CollectIntersectionOrEnclosureList(
      const FloatRect&,
      SVGElement*,
      GeometryMatchingMode) const;

  Member<SVGAnimatedLength> x_;
  Member<SVGAnimatedLength> y_;
  Member<SVGAnimatedLength> width_;
  Member<SVGAnimatedLength> height_;

  AffineTransform LocalCoordinateSpaceTransform(CTMScope) const override;

  Member<SMILTimeContainer> time_container_;
  Member<SVGPoint> translation_;
  Member<const SVGViewSpec> view_spec_;
  float current_scale_;

  friend class SVGCurrentTranslateTearOff;
};

}  // namespace blink

#endif  // THIRD_PARTY_BLINK_RENDERER_CORE_SVG_SVG_SVG_ELEMENT_H_