path: root/widgets/text/e-text-model-repos.c

/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
/*
 * e-text-model-repos.c - Standard ETextModelReposFn definitions
 * Copyright (C) 1999-2008 Novell, Inc. (www.novell.com)
 *
 * Authors:
 *   Jon Trowbridge <trow@ximian.com>
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Library General Public
 * License, version 2, as published by the Free Software Foundation.
 *
 * This library 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
 * Library General Public License for more details.
 *
 * You should have received a copy of the GNU Library General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
 * 02110-1301, USA.
 */

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

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

gint
e_repos_shift (gint pos, gpointer data)
{
    EReposShift *info = (EReposShift *) data;
    g_return_val_if_fail (data, -1);

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

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);
}

gint
e_repos_clamp (gint pos, gpointer data)
{
    ETextModel *model;

    g_return_val_if_fail (data != NULL && E_IS_TEXT_MODEL (data), -1);
    model = E_TEXT_MODEL (data);

    return e_text_model_validate_position (model, pos);
}