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/*
Widget based utility functions.
Copyright (C) 1994-2023
Free Software Foundation, Inc.
Authors:
Miguel de Icaza, 1994, 1995, 1996
Radek Doulik, 1994, 1995
Jakub Jelinek, 1995
Andrej Borsenkow, 1995
Andrew Borodin <aborodin@vmail.ru>, 2009, 2010, 2013
This file is part of the Midnight Commander.
The Midnight Commander is free software: you can redistribute it
and/or modify it under the terms of the GNU General Public License as
published by the Free Software Foundation, either version 3 of the License,
or (at your option) any later version.
The Midnight Commander 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, see <http://www.gnu.org/licenses/>.
*/
/** \file listbox-window.c
* \brief Source: Listbox widget, a listbox within dialog window
*/
#include <config.h>
#include <stdlib.h>
#include "lib/global.h"
#include "lib/tty/tty.h" /* COLS */
#include "lib/skin.h"
#include "lib/strutil.h" /* str_term_width1() */
#include "lib/widget.h"
/*** global variables ****************************************************************************/
/*** file scope macro definitions ****************************************************************/
/*** file scope type declarations ****************************************************************/
/*** file scope variables ************************************************************************/
/*** file scope functions ************************************************************************/
/* --------------------------------------------------------------------------------------------- */
/*** public functions ****************************************************************************/
/* --------------------------------------------------------------------------------------------- */
Listbox *
listbox_window_centered_new (int center_y, int center_x, int lines, int cols,
const char *title, const char *help)
{
const int space = 4;
int xpos = 0, ypos = 0;
Listbox *listbox;
widget_pos_flags_t pos_flags = WPOS_TRYUP;
/* Adjust sizes */
lines = MIN (lines, LINES - 6);
if (title != NULL)
{
int len;
len = str_term_width1 (title) + 4;
cols = MAX (cols, len);
}
cols = MIN (cols, COLS - 6);
/* adjust position */
if ((center_y < 0) || (center_x < 0))
pos_flags |= WPOS_CENTER;
else
{
/* Actually, this this is not used in MC. */
ypos = center_y;
xpos = center_x;
ypos -= lines / 2;
xpos -= cols / 2;
if (ypos + lines >= LINES)
ypos = LINES - lines - space;
if (ypos < 0)
ypos = 0;
if (xpos + cols >= COLS)
xpos = COLS - cols - space;
if (xpos < 0)
xpos = 0;
}
listbox = g_new (Listbox, 1);
listbox->dlg =
dlg_create (TRUE, ypos, xpos, lines + space, cols + space, pos_flags, FALSE, listbox_colors,
NULL, NULL, help, title);
listbox->list = listbox_new (2, 2, lines, cols, FALSE, NULL);
group_add_widget (GROUP (listbox->dlg), listbox->list);
return listbox;
}
/* --------------------------------------------------------------------------------------------- */
Listbox *
listbox_window_new (int lines, int cols, const char *title, const char *help)
{
return listbox_window_centered_new (-1, -1, lines, cols, title, help);
}
/* --------------------------------------------------------------------------------------------- */
/** Returns the number of the item selected */
int
listbox_run (Listbox * l)
{
int val = -1;
if (dlg_run (l->dlg) != B_CANCEL)
val = l->list->current;
widget_destroy (WIDGET (l->dlg));
g_free (l);
return val;
}
/* --------------------------------------------------------------------------------------------- */
/**
* A variant of listbox_run() which is more convenient to use when we
* need to select arbitrary 'data'.
*
* @param select the item to select initially, by its 'data'. Optional.
* @return the 'data' of the item selected, or NULL if none selected.
*/
void *
listbox_run_with_data (Listbox * l, const void *select)
{
void *val = NULL;
if (select != NULL)
listbox_set_current (l->list, listbox_search_data (l->list, select));
if (dlg_run (l->dlg) != B_CANCEL)
{
WLEntry *e;
e = listbox_get_nth_entry (l->list, l->list->current);
if (e != NULL)
{
/* The assert guards against returning a soon-to-be deallocated
* pointer (as in listbox_add_item(..., TRUE)). */
g_assert (!e->free_data);
val = e->data;
}
}
widget_destroy (WIDGET (l->dlg));
g_free (l);
return val;
}
/* --------------------------------------------------------------------------------------------- */
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