#ifndef TGRID_H
#define TGRID_H

#include "tcolumnset.h"
#include "tw/tw.h"
#include "tw/scrollbar.h"

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

class TGenericGridAction
{
public:
	virtual ~TGenericGridAction() {}
	virtual void sendCommand(int item) = 0;
};

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

template <class T>
class TGridAction : public TGenericGridAction
{
public:
	typedef void (T::*Method)(int item);
	TGridAction(T *target, Method method) : m_target(target), m_method(method) {}
	void sendCommand(int item) { (m_target->*m_method)(item); }
private:
	T *m_target;
	Method m_method;
};

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

class TGridCell
{
public:
	TGridCell() {}
	TGridCell(const string &text) : m_text(text) {}

	string m_text;
};

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

class TGridColumn : public TColumnHeader
{
public:
	enum Alignment {
		LeftAlignment,
		CenterAlignment,
		RightAlignment
	};

	TGridColumn(const string &name = "", Alignment alignment = CenterAlignment);
	~TGridColumn();

	static TGridColumn *createEmpty();

	int getRowCount() const;

	const TGridCell &getCell(int row) const;
	void setCell(int row, const TGridCell &cell);
	void setCell(int row, const string &text)
	{
		setCell(row, TGridCell(text));
	}

	void getCells(int row, int rowCount, TGridCell cells[]);
	void setCells(int row, int rowCount, const TGridCell cells[]);

	void insertEmptyCells(int row, int rowCount = 1);
	void removeCells(int row, int rowCount = 1);
	void clearCells(int row, int rowCount = 1);

	string getName() const;
	Alignment getAlignment() const;

private:
	class Imp;
	Imp *m_imp;
};

typedef TSmartPointerT<TGridColumn> TGridColumnP;

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

class TGrid : public TWidget
{
public:
	TGrid(TWidget *parent, string name = "grid");
	~TGrid();

	void addColumn(const string &name, int width, TGridColumn::Alignment align = TGridColumn::CenterAlignment);

	void addRow();
	void removeRow(int row);

	int getColIndex(const string &colName);

	void setCell(int row, int col, const string &text);
	string getCell(int row, int col);

	int getColCount() const;
	int getRowCount() const;

	int getSelectedRowCount() const;
	int getSelectedRowIndex(int i) const; // returns the index of the i-th item selected

	void select(int row, bool on);
	void unselectAll();

	bool isSelected(int row) const;

	void setSelAction(TGenericGridAction *action);
	void setDblClickAction(TGenericGridAction *action);

	void draw();
	void configureNotify(const TDimension &d);

	void leftButtonDown(const TMouseEvent &e);
	void leftButtonDrag(const TMouseEvent &e);
	void leftButtonUp(const TMouseEvent &e);

	/*
  void leftButtonDoubleClick(const TMouseEvent &e);
  void keyDown(int key, unsigned long mod, const TPoint &);
*/
	void scrollTo(int y);

private:
	class Data;
	Data *m_data;
};

#endif