evolution/a11y/ea-cell-table.c

/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
/* vim:expandtab:shiftwidth=8:tabstop=8:
 */
/* Evolution Accessibility: ea-cell-table.c
 *
 * Copyright (C) 2003 Ximian, Inc.
 *
 * 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.
 *
 * Author: Bolian Yin <bolian.yin@sun.com> Sun Microsystem Inc., 2003
 *
 */

#include "ea-cell-table.h"

EaCellTable *
ea_cell_table_create (gint rows, gint columns, gboolean column_first)
{
	EaCellTable * cell_data;
	gint index;

	g_return_val_if_fail (((columns > 0) && (rows > 0)), NULL);

	cell_data = g_new0 (EaCellTable, 1);

	cell_data->column_first = column_first;
	cell_data->columns = columns;
	cell_data->rows = rows;

	cell_data->column_labels = g_new0 (gchar*, columns);
	for (index = columns -1; index >= 0; --index)
		cell_data->column_labels [index] = NULL;

	cell_data->row_labels = g_new0 (gchar*, rows);
	for (index = rows -1; index >= 0; --index)
		cell_data->row_labels [index] = NULL;

	cell_data->cells = g_new0(gpointer, (columns * rows));
	for (index = (columns * rows) -1; index >= 0; --index)
		cell_data->cells [index] = NULL;
	return cell_data;
}

void
ea_cell_table_destroy (EaCellTable * cell_data)
{
	gint index;
	g_return_if_fail (cell_data);

	for (index = 0; index < cell_data->columns; ++index)
		if (cell_data->column_labels [index])
			g_free (cell_data->column_labels [index]);
	g_free (cell_data->column_labels);

	for (index = 0; index < cell_data->rows; ++index)
		if (cell_data->row_labels [index])
			g_free (cell_data->row_labels [index]);
	g_free (cell_data->row_labels);

	for (index = (cell_data->columns * cell_data->rows) -1;
	     index >= 0; --index)
		if (cell_data->cells[index] &&
		    G_IS_OBJECT (cell_data->cells[index]))
			g_object_unref (cell_data->cells[index]);

	g_free (cell_data->cells);
}

gpointer
ea_cell_table_get_cell (EaCellTable * cell_data,
			gint row, gint column)
{
	gint index;

	g_return_val_if_fail (cell_data, NULL);

	index = ea_cell_table_get_index (cell_data, column, row);
	if (index == -1)
		return NULL;

	return cell_data->cells[index];
}

gboolean
ea_cell_table_set_cell (EaCellTable * cell_data,
			gint row, gint column, gpointer cell)
{
	gint index;

	g_return_val_if_fail (cell_data, FALSE);

	index = ea_cell_table_get_index (cell_data, column, row);
	if (index == -1)
		return FALSE;

	if (cell && G_IS_OBJECT(cell))
		g_object_ref (cell);
	if (cell_data->cells[index] &&
	    G_IS_OBJECT (cell_data->cells[index]))
		g_object_unref (cell_data->cells[index]);
	cell_data->cells[index] = cell;

	return TRUE;
}

gpointer
ea_cell_table_get_cell_at_index (EaCellTable * cell_data,
				 gint index)
{
	g_return_val_if_fail (cell_data, NULL);

	if (index >=0 && index < (cell_data->columns * cell_data->rows))
		return cell_data->cells [index];
	return NULL;
}

gboolean
ea_cell_table_set_cell_at_index (EaCellTable * cell_data,
				 gint index, gpointer cell)
{
	g_return_val_if_fail (cell_data, FALSE);

	if (index < 0 || index >=cell_data->columns * cell_data->rows)
		return FALSE;

	if (cell && G_IS_OBJECT(cell))
		g_object_ref (cell);
	if (cell_data->cells[index] &&
	    G_IS_OBJECT (cell_data->cells[index]))
		g_object_unref (cell_data->cells[index]);
	cell_data->cells[index] = cell;

	return TRUE;
}

G_CONST_RETURN gchar*
ea_cell_table_get_column_label (EaCellTable * cell_data,
				gint column)
{
	g_return_val_if_fail (cell_data, NULL);
	g_return_val_if_fail ((column >= 0 && column < cell_data->columns), NULL);

	return cell_data->column_labels[column];
}

void
ea_cell_table_set_column_label (EaCellTable * cell_data,
				gint column, const gchar *label)
{
	g_return_if_fail (cell_data);
	g_return_if_fail ((column >= 0 && column < cell_data->columns));

	if (cell_data->column_labels[column])
		g_free (cell_data->column_labels[column]);
	cell_data->column_labels[column] = g_strdup(label);
}

G_CONST_RETURN gchar*
ea_cell_table_get_row_label (EaCellTable * cell_data,
			     gint row)
{
	g_return_val_if_fail (cell_data, NULL);
	g_return_val_if_fail ((row >= 0 && row < cell_data->rows), NULL);

	return cell_data->row_labels[row];
}

void
ea_cell_table_set_row_label (EaCellTable * cell_data,
			     gint row, const gchar *label)
{
	g_return_if_fail (cell_data);
	g_return_if_fail ((row >= 0 && row < cell_data->rows));

	if (cell_data->row_labels[row])
		g_free (cell_data->row_labels[row]);
	cell_data->row_labels[row] = g_strdup(label);
}

gint
ea_cell_table_get_index (EaCellTable *cell_data,
			 gint row, gint column)
{
	g_return_val_if_fail (cell_data, -1);
	if (row < 0 || row >= cell_data->rows ||
	    column < 0 || column >= cell_data->columns)
		return -1;

	if (cell_data->column_first)
		return column * cell_data->rows + row;
	else
		return row * cell_data->columns + column;
}