// -*- C++ -*-
/* This file is part of
 * ======================================================
 * 
 *           LyX, The Document Processor
 *
 *           Copyright 1995-2000 The LyX Team.
 *
 *======================================================
 */
// This is the rewrite of the tabular (table) support.

// It will probably be a lot of work.

// One first goal could be to make the inset read the old table format
// and just output it again... no viewing at all.

// When making the internal structure of tabular support I really think
// that STL containers should be used. This will separate the container from
// the rest of the code, which is a good thing.

// Ideally the tabular support should do as the mathed and use
// LaTeX in the .lyx file too.

// Things to think of when desingning the new tabular support:
// - color support (colortbl, color)
// - decimal alignment (dcloumn)
// - custom lines (hhline)
// - rotation
// - multicolumn
// - multirow
// - column styles

// This is what I have written about tabular support in the LyX3-Tasks file:
//
//  o rewrite of table code. Should probably be written as some
//          kind of an inset. At least get the code out of the kernel.
//                - colortbl  -multirow
//                - hhline    -multicolumn
//                - dcolumn
// o enhance longtable support

// Lgb

#ifndef INSETTABULAR_H
#define INSETTABULAR_H

#ifdef __GNUG__
#pragma interface
#endif

#include "lyxinset.h"
#include "tabular.h"
#include "LString.h"
#include "lyxcursor.h"
#include "lyxfunc.h"
#include <sigc++/signal_system.h>

#ifdef SIGC_CXX_NAMESPACES
using SigC::Signal0;
#endif

class LyXLex;
class Painter;
class BufferView;
class Buffer;

class InsetTabular : public UpdatableInset {
public:
    ///
    enum UpdateCodes {
	NONE = 0,
	CURSOR = 1,
	CELL = 2,
	SELECTION = 3,
	FULL = 4,
	INIT = 5
    };
    ///
    InsetTabular(Buffer const &, int rows = 1, int columns = 1);
    ///
    InsetTabular(InsetTabular const &, Buffer const &);
    ///
    ~InsetTabular();
    ///
    Inset * Clone(Buffer const &) const;
    ///
    void Read(Buffer const *, LyXLex &);
    ///
    void Write(Buffer const *, std::ostream &) const;
    ///
    int ascent(BufferView *, LyXFont const &) const;
    ///
    int descent(BufferView *, LyXFont const &) const;
    ///
    int width(BufferView *, LyXFont const & f) const;
    ///
    void draw(BufferView *, const LyXFont &, int , float &, bool) const;
    ///
    void update(BufferView *, LyXFont const &, bool = false);
    ///
    string const EditMessage() const;
    ///
    void Edit(BufferView *, int x, int y, unsigned int);
    ///
    bool doClearArea() const { return !locked; };
    ///
    void InsetUnlock(BufferView *);
    ///
    void UpdateLocal(BufferView *, UpdateCodes, bool mark_dirty) const;
    ///
    bool LockInsetInInset(BufferView *, UpdatableInset *);
    ///
    bool UnlockInsetInInset(BufferView *, UpdatableInset *, bool lr = false);
    ///
    bool UpdateInsetInInset(BufferView *, Inset *);
    ///
    unsigned int InsetInInsetY();
    ///
    UpdatableInset * GetLockingInset();
    ///
    UpdatableInset * GetFirstLockingInsetOfType(Inset::Code);
    ///
    bool InsertInset(BufferView *, Inset *);
    ///
    bool IsTextInset() const { return true; }
    ///
    bool display() const { return tabular->IsLongTabular(); }
    ///
    void InsetButtonRelease(BufferView *, int, int, int);
    ///
    void InsetButtonPress(BufferView *, int, int, int);
    ///
    void InsetMotionNotify(BufferView *, int, int, int);
    ///
    void InsetKeyPress(XKeyEvent *);
    ///
    UpdatableInset::RESULT LocalDispatch(BufferView *, int, string const &);
    ///
    int Latex(Buffer const *, std::ostream &, bool, bool) const;
    ///
    int Ascii(Buffer const *, std::ostream &, int linelen) const;
    ///
    int Linuxdoc(Buffer const *, std::ostream &) const;
    ///
    int DocBook(Buffer const *, std::ostream &) const;
    ///
    void Validate(LaTeXFeatures & features) const;
    ///
    Inset::Code LyxCode() const { return Inset::TABULAR_CODE; }
    ///
    void GetCursorPos(BufferView *, int & x, int & y) const;
    ///
    void ToggleInsetCursor(BufferView *);
    ///
    bool TabularFeatures(BufferView * bv, string const & what);
    ///
    void TabularFeatures(BufferView * bv, LyXTabular::Feature feature,
			 string const & val = string());
    ///
    int GetActCell() const { return actcell; }
    ///
    void SetFont(BufferView *, LyXFont const &, bool toggleall = false);
    ///
    int getMaxWidth(Painter & pain, UpdatableInset const *) const;
    ///
    Buffer * BufferOwner() const { return const_cast<Buffer *>(buffer); }
    ///
    LyXText * getLyXText(BufferView const *, bool const recursive = false) const;
    ///
    void resizeLyXText(BufferView *) const;
    ///
    void OpenLayoutDialog(BufferView *) const;
    ///
    LyXFunc::func_status getStatus(string const & argument) const;

    //
    // Public structures and variables
    ///
    LyXTabular * tabular;
    ///
    Signal0<void> hideDialog;

private:
    ///
    bool calculate_dimensions_of_cells(BufferView *, LyXFont const &,
				       bool = false) const;
    ///
    void DrawCellLines(Painter &, int x, int baseline,
		       int row, int cell) const;
    ///
    void DrawCellSelection(Painter &, int x, int baseline,
			   int row, int column, int cell) const;
    ///
    void ShowInsetCursor(BufferView *, bool show=true);
    ///
    void HideInsetCursor(BufferView *);
    ///
    void setPos(BufferView *, int x, int y) const;
    ///
    UpdatableInset::RESULT moveRight(BufferView *, bool lock = true);
    ///
    UpdatableInset::RESULT moveLeft(BufferView *, bool lock = true);
    ///
    UpdatableInset::RESULT moveUp(BufferView *, bool lock = true);
    ///
    UpdatableInset::RESULT moveDown(BufferView *, bool lock = true);
    ///
    bool moveNextCell(BufferView *, bool lock = false);
    ///
    bool movePrevCell(BufferView *, bool lock = false);
    ///
    bool Delete();
    ///
    int getCellXPos(int cell) const;
    ///
    void resetPos(BufferView *) const;
    ///
    void RemoveTabularRow();
    ///
    bool hasSelection() const {
	return sel_cell_start != sel_cell_end;
    }
    ///
    void clearSelection() const {
	sel_cell_start = sel_cell_end = 0;
    }
    ///
    bool ActivateCellInset(BufferView *, int x = 0, int y = 0, int button = 0,
			   bool behind = false);
    ///
    bool ActivateCellInsetAbs(BufferView *, int x = 0, int y = 0, int button = 0);
    ///
    bool InsetHit(BufferView * bv, int x, int y) const;
    ///
    int GetMaxWidthOfCell(Painter &, int cell) const;
    ///
    bool hasPasteBuffer() const;
    ///
    bool copySelection(BufferView *);
    ///
    bool pasteSelection(BufferView *);
    ///
    bool cutSelection();
    ///
    bool isRightToLeft(BufferView *);

    //
    // Private structures and variables
    ///
    InsetText * the_locking_inset;
    ///
    InsetText * old_locking_inset;
    ///
    Buffer const * buffer;
    ///
    mutable LyXCursor cursor;
    ///
    mutable unsigned int inset_x;
    ///
    mutable unsigned int inset_y;
    ///
    mutable int sel_cell_start;
    ///
    mutable int sel_cell_end;
    ///
    mutable int actcell;
    ///
    mutable int oldcell;
    ///
    mutable int actcol;
    ///
    mutable int actrow;
    ///
    mutable int first_visible_cell;
    ///
    bool no_selection;
    ///
    bool no_draw;
    ///
    mutable bool locked;
    ///
    mutable UpdateCodes need_update;
};
#endif