#ifndef HOOK_SELECTION
#define HOOK_SELECTION

#include "toonzqt/selection.h"
#include "toonzqt/dvmimedata.h"
#include "toonz/txshlevel.h"
#include "toonz/hook.h"
#include "tundo.h"

#include <set>

//=============================================================================
// HookUndo
//-----------------------------------------------------------------------------

class HookUndo : public TUndo
{
	HookSet m_oldHooks, m_newHooks;
	TXshLevelP m_level;

public:
	HookUndo(const TXshLevelP &level);
	~HookUndo();

	void onAdd();
	void assignHookSet(const HookSet &src) const;

	void undo() const;
	void redo() const;

	int getSize() const;
};

//=============================================================================
// HooksData
//-----------------------------------------------------------------------------

class HooksData : public DvMimeData
{
	struct HookPosition {
		int m_id;
		TPointD m_aPos, m_bPos;

		HookPosition(int id, const TPointD &aPos, const TPointD &bPos)
			: m_id(id), m_aPos(aPos), m_bPos(bPos) {}
	};

	std::vector<HookPosition> m_hookPositions;
	TXshLevelP m_level;

public:
	HooksData(const TXshLevelP &level);
	~HooksData();

	HooksData *clone() const;
	void storeHookPositions(const std::vector<int> &ids);
	void restoreHookPositions() const;
};

//=============================================================================
// HookSelection
//
// Derived from TSelection. Control which hooks are currently selected
// Note that a hook is made of two different parts (used e.g. to "pass the hook"
// between the feet in a walking cycle) that can be independently selected (1=A,2=B)
//-----------------------------------------------------------------------------

class HookSelection : public TSelection
{
	TXshLevelP m_level;
	std::set<std::pair<int, int>> m_hooks; // hookId, side : 1=A 2=B

public:
	HookSelection();
	~HookSelection();

	TSelection *clone() const;
	void setLevel(const TXshLevelP &level) { m_level = level; }
	void select(int id, int side);
	void unselect(int id, int side);
	bool isSelected(int id, int side) const;
	void invertSelection(int id, int side);
	bool isEmpty() const;
	void selectNone() { m_hooks.clear(); }
	HookSet *getHookSet() const;
	bool select(const TSelection *s);
	void enableCommands();

	//commands
	void deleteSelectedHooks();
	void copySelectedHooks();
	void cutSelectedHooks();
	void pasteSelectedHooks();
};

#endif //HOOK_SELECTION