Adding upstream version 3:4.8.30.upstream/3%4.8.30

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 176 insertions, 0 deletions

diff --git a/lib/widget/listbox-window.c b/lib/widget/listbox-window.c
new file mode 100644
index 0000000..47d7f8b
--- /dev/null
+++ b/lib/widget/listbox-window.c
@@ -0,0 +1,176 @@
+/*
+   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;
+}
+
+/* --------------------------------------------------------------------------------------------- */