#pragma once

#ifndef FUNCTIONSELECTION_H

#define FUNCTIONSELECTION_H

#include "tcommon.h"

#include "functiontreeviewer.h"

#include "toonzqt/selection.h"

#include "toonzqt/dvmimedata.h"

#include "tdoublekeyframe.h"

#include <qwidget></qwidget>

#include <qlist></qlist>

#include <qset></qset>

#undef DVAPI

#undef DVVAR

#ifdef TOONZQT_EXPORTS

#define DVAPI DV_EXPORT_API

#define DVVAR DV_EXPORT_VAR

#else

#define DVAPI DV_IMPORT_API

#define DVVAR DV_IMPORT_VAR

#endif

// forward declaration

class TDoubleParam;

class TFrameHandle;

//-----------------------------------------------------------------------------

class ColumnToCurveMapper {

public:

  virtual TDoubleParam *getCurve(int columnIndex) const = 0;

};

//-----------------------------------------------------------------------------

class FunctionSelection final : public QObject, public TSelection {

  Q_OBJECT

  QRect m_selectedCells;  // yrange = rowrange of the selected keyframes;

                          // xrange = columnrange (functionsheet only)

  QList<qpair<tdoubleparam *,="" qset<int="">>> m_selectedKeyframes;</qpair<tdoubleparam>

  // first = curve, second = set of selected keyframes index

  int m_selectedSegment;  // index of the first keyframe of the segment; -1 if

                          // no segment selected

                          // (functionpanel only)

  // assert(m_selectedSegment<0 || m_selectedKeyframes.size()==1)

  TFrameHandle *m_frameHandle;

  ColumnToCurveMapper *m_columnToCurveMapper;

  int getCurveIndex(TDoubleParam *curve) const;

  // finds i : m_selectedKeyframes[i].first == curve

  //-1 if curve not found

  int touchCurveIndex(TDoubleParam *curve);

  // as getCurve(); if curve not found then add it

public:

  FunctionSelection();

  ~FunctionSelection();

  void setFrameHandle(TFrameHandle *frameHandle) {

    m_frameHandle = frameHandle;

  }

  // function graph

  void selectCurve(TDoubleParam *curve);

  void deselectAllKeyframes();

  // function sheet

  QRect getSelectedCells() const { return m_selectedCells; }

  void selectCells(const QRect &selectedCells,

                   const QList<tdoubleparam *=""> &curves);</tdoubleparam>

  void selectCells(const QRect &selectedCells);

  void deselectAllCells();

  bool isEmpty() const override { return m_selectedKeyframes.empty(); }

  void selectNone() override;

  void select(TDoubleParam *curve, int k);

  bool isSelected(TDoubleParam *curve, int k) const;

  void selectSegment(TDoubleParam *, int k,

                     QRect selectedCells = QRect());  // note: if a segment is

                                                      // selected then also the

                                                      // segment ends are

                                                      // selected

  int getSelectedKeyframeCount() const;

  QPair<tdoubleparam *,="" int=""> getSelectedKeyframe(int index)</tdoubleparam>

      const;  // if index<0 || index>=getSelectedKeyframeCount() returns (0,-1)

  QPair<tdoubleparam *,="" int=""> getSelectedSegment()</tdoubleparam>

      const;  // if no segment is selected returns (0,-1)

  bool isSegmentSelected(TDoubleParam *, int k) const;

  void setColumnToCurveMapper(ColumnToCurveMapper *mapper);  // gets ownership

  TDoubleParam *getCurveFromColumn(int columnIndex) const {

    return m_columnToCurveMapper ? m_columnToCurveMapper->getCurve(columnIndex)

                                 : 0;

  }

  void enableCommands() override;

  void doCopy();

  void doPaste();

  void doCut();

  void doDelete();

  void insertCells();

  // if inclusive == true, consider all segments overlapping the selection

  void setStep(int, bool inclusive = true);

  void setStep1() { setStep(1); }

  void setStep2() { setStep(2); }

  void setStep3() { setStep(3); }

  void setStep4() { setStep(4); }

  // return step if all the selected segments has the same value.

  // return -1 if the selection does not overlap any segments

  // return 0 if the step value is uneven in the selection

  // if inclusive == true, consider all segments overlapping the selection

  int getCommonStep(bool inclusive = true);

  void setSegmentType(TDoubleKeyframe::Type type, bool inclusive = true);

  // return TDoubleKeyframe::Type value if the selected segments has the same

  // interpolation type. return -1 if the selection does not overlap any

  // segments return 0 (TDoubleKeyframe::None) if the interpolation is not

  // identical in the selection if inclusive == true, consider all segments

  // overlapping the selection

  int getCommonSegmentType(bool inclusive = true);

  QList<int> getSelectedKeyIndices(TDoubleParam *curve);</int>

signals:

  void selectionChanged();

};

//-----------------------------------------------------------------------------

class FunctionKeyframesData final : public DvMimeData {

public:

  FunctionKeyframesData();

  ~FunctionKeyframesData();

  typedef std::vector<tdoublekeyframe> Keyframes;</tdoublekeyframe>

  void setColumnCount(int columnCount);

  int getColumnCount() const { return (int)m_keyframes.size(); }

  int getRowCount() const;

  void getData(int columnIndex, TDoubleParam *curve, double frame,

               const QSet<int> &kIndices);</int>

  void setData(int columnIndex, TDoubleParam *curve, double frame) const;

  const Keyframes &getKeyframes(int columnIndex) const;

  DvMimeData *clone() const override;

  bool isCircularReferenceFree(int columnIndex, TDoubleParam *curve) const;

private:

  std::vector<keyframes> m_keyframes;</keyframes>

};

#endif