/*
 *
 * This program is free software; you can redistribute it and/or modify it
 * under the terms of the GNU Lesser 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 Lesser General Public License
 * along with this program; if not, see <http://www.gnu.org/licenses/>.
 *
 *
 * Authors:
 *		Jon Trowbridge <trow@ximian.com>
 *
 * Copyright (C) 1999-2008 Novell, Inc. (www.novell.com)
 *
 */

#ifdef HAVE_CONFIG_H
#include <config.h>
#endif

#include "e-text-model-repos.h"

#define MODEL_CLAMP(model, pos) (CLAMP((pos), 0, strlen((model)->text)))

gint
e_repos_absolute (gint pos,
                  gpointer data)
{
	EReposAbsolute *info = (EReposAbsolute *) data;
	g_return_val_if_fail (data, -1);

	pos = info->pos;
	if (pos < 0) {
		gint len = e_text_model_get_text_length (info->model);
		pos += len + 1;
	}

	return e_text_model_validate_position (info->model, pos);
}

gint
e_repos_insert_shift (gint pos,
                      gpointer data)
{
	EReposInsertShift *info = (EReposInsertShift *) data;
	g_return_val_if_fail (data, -1);

	if (pos >= info->pos)
		pos += info->len;

	return e_text_model_validate_position (info->model, pos);
}

gint
e_repos_delete_shift (gint pos,
                      gpointer data)
{
	EReposDeleteShift *info = (EReposDeleteShift *) data;
	g_return_val_if_fail (data, -1);

	if (pos > info->pos + info->len)
		pos -= info->len;
	else if (pos > info->pos)
		pos = info->pos;

	return e_text_model_validate_position (info->model, pos);
}