1/****************************************************************************
2 * Copyright (c) 1998-2005,2008 Free Software Foundation, Inc.              *
3 *                                                                          *
4 * Permission is hereby granted, free of charge, to any person obtaining a  *
5 * copy of this software and associated documentation files (the            *
6 * "Software"), to deal in the Software without restriction, including      *
7 * without limitation the rights to use, copy, modify, merge, publish,      *
8 * distribute, distribute with modifications, sublicense, and/or sell       *
9 * copies of the Software, and to permit persons to whom the Software is    *
10 * furnished to do so, subject to the following conditions:                 *
11 *                                                                          *
12 * The above copyright notice and this permission notice shall be included  *
13 * in all copies or substantial portions of the Software.                   *
14 *                                                                          *
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS  *
16 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF               *
17 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.   *
18 * IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,   *
19 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR    *
20 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR    *
21 * THE USE OR OTHER DEALINGS IN THE SOFTWARE.                               *
22 *                                                                          *
23 * Except as contained in this notice, the name(s) of the above copyright   *
24 * holders shall not be used in advertising or otherwise to promote the     *
25 * sale, use or other dealings in this Software without prior written       *
26 * authorization.                                                           *
27 ****************************************************************************/
28
29/****************************************************************************
30 *  Author: Zeyd M. Ben-Halim <zmbenhal@netcom.com> 1995                    *
31 *     and: Eric S. Raymond <esr@snark.thyrsus.com>                         *
32 *     and: Juergen Pfeifer                         1997-1999               *
33 *     and: Thomas E. Dickey                        2000-on                 *
34 ****************************************************************************/
35
36/* p_new.c
37 * Creation of a new panel
38 */
39#include "panel.priv.h"
40
41MODULE_ID("$Id: p_new.c,v 1.10 2008/08/04 18:25:48 tom Exp $")
42
43#ifdef TRACE
44static char *stdscr_id;
45static char *new_id;
46#endif
47
48/*+-------------------------------------------------------------------------
49  Get root (i.e. stdscr's) panel.
50  Establish the pseudo panel for stdscr if necessary.
51--------------------------------------------------------------------------*/
52static PANEL *
53root_panel(void)
54{
55  if (_nc_stdscr_pseudo_panel == (PANEL *) 0)
56    {
57
58      assert(stdscr && !_nc_bottom_panel && !_nc_top_panel);
59#if NO_LEAKS
60      _nc_panelhook()->destroy = del_panel;
61#endif
62      _nc_stdscr_pseudo_panel = (PANEL *) malloc(sizeof(PANEL));
63      if (_nc_stdscr_pseudo_panel != 0)
64	{
65	  PANEL *pan = _nc_stdscr_pseudo_panel;
66	  WINDOW *win = stdscr;
67
68	  pan->win = win;
69	  pan->below = (PANEL *) 0;
70	  pan->above = (PANEL *) 0;
71#ifdef TRACE
72	  if (!stdscr_id)
73	    stdscr_id = strdup("stdscr");
74	  pan->user = stdscr_id;
75#else
76	  pan->user = (void *)0;
77#endif
78	  _nc_bottom_panel = _nc_top_panel = pan;
79	}
80    }
81  return _nc_stdscr_pseudo_panel;
82}
83
84NCURSES_EXPORT(PANEL *)
85new_panel(WINDOW *win)
86{
87  PANEL *pan = (PANEL *) 0;
88
89  T((T_CALLED("new_panel(%p)"), win));
90
91  if (!win)
92    returnPanel(pan);
93
94  if (!_nc_stdscr_pseudo_panel)
95    (void)root_panel();
96  assert(_nc_stdscr_pseudo_panel);
97
98  if (!(win->_flags & _ISPAD) && (pan = (PANEL *) malloc(sizeof(PANEL))))
99    {
100      pan->win = win;
101      pan->above = (PANEL *) 0;
102      pan->below = (PANEL *) 0;
103#ifdef TRACE
104      if (!new_id)
105	new_id = strdup("new");
106      pan->user = new_id;
107#else
108      pan->user = (char *)0;
109#endif
110      (void)show_panel(pan);
111    }
112  returnPanel(pan);
113}
114