/* vim: set sw=8: -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
/*
 * go-data-impl.h : 
 *
 * Copyright (C) 2003-2004 Jody Goldberg (jody@gnome.org)
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of version 2 of the GNU General Public
 * License as published by the Free Software Foundation.
 *
 * This program 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 General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
 * USA
 */
#ifndef GO_DATA_IMPL_H
#define GO_DATA_IMPL_H

#include <goffice/graph/goffice-graph.h>
#include <goffice/graph/go-data.h>
#include <glib-object.h>

G_BEGIN_DECLS

typedef enum {
	GO_DATA_CACHE_IS_VALID =	1 << 0,
	GO_DATA_IS_EDITABLE =		1 << 1,
	GO_DATA_VECTOR_LEN_CACHED =	1 << 2,
	GO_DATA_MATRIX_SIZE_CACHED = GO_DATA_VECTOR_LEN_CACHED
} GODataFlags;

struct _GOData {
	GObject		base;
	gint32		flags; /* dunno what to do with these yet */
};
typedef struct {
	GObjectClass base;

	GOData	  *(*dup)	    (GOData const *src);
	gboolean   (*eq)	    (GOData const *a, GOData const *b);
	GOFormat  *(*preferred_fmt) (GOData const *dat);
	char      *(*as_str)	    (GOData const *dat);
	gboolean   (*from_str)	    (GOData *dat, char const *str);
	void	   (*emit_changed)  (GOData *dat);

	/* signals */
	void (*changed)	(GOData *dat);
} GODataClass;

struct _GODataScalar {
	GOData base;
};

typedef struct {
	GODataClass base;
	double       (*get_value)  (GODataScalar *scalar);
	char const  *(*get_str)	   (GODataScalar *scalar);
/*	PangoLayout *(get_fmt_str) (GODataScalar *scalar); */
} GODataScalarClass;

struct _GODataVector {
	GOData base;

	int len;	/* negative if dirty, includes missing values */
	double *values;	/* NULL = inititialized/unsupported, nan = missing */
	double minimum, maximum;
};
typedef struct {
	GODataClass base;

	void	 (*load_len)    (GODataVector *vec);
	void	 (*load_values) (GODataVector *vec);
	double	 (*get_value)   (GODataVector *vec, unsigned i);
	char	*(*get_str)	(GODataVector *vec, unsigned i);
/*	PangoLayout *(get_fmt_str)  (GODataVector *vec, unsigned i); */
} GODataVectorClass;

struct _GODataMatrix {
	GOData base;

	GOMatrixSize size;	/* negative if dirty, includes missing values */
	double *values;	/* NULL = uninitialized/unsupported, nan = missing */
	double minimum, maximum;
};

typedef struct {
	GODataClass base;

	void	 (*load_size)    (GODataMatrix *vec);
	void	 (*load_values) (GODataMatrix *vec);
	double	 (*get_value)   (GODataMatrix *mat, unsigned i, unsigned j);
	char	*(*get_str)	(GODataMatrix *mat, unsigned i, unsigned j);
/*	PangoLayout *(get_fmt_str)  (GODataMatrix *mat, unsigned i, unsigned j); */
} GODataMatrixClass;

G_END_DECLS

#endif /* GO_DATA_IMPL_H */