1/****************************************************************************
2 * Copyright (c) 1998-2009,2010 Free Software Foundation, Inc.              *
3 *                                                                          *
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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 1.16 2010/01/23 21:22:16 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(NCURSES_SP_DCL0)
54{
55#if NCURSES_SP_FUNCS
56  struct panelhook *ph = NCURSES_SP_NAME(_nc_panelhook) (sp);
57
58#elif NO_LEAKS
59  struct panelhook *ph = _nc_panelhook();
60#endif
61
62  if (_nc_stdscr_pseudo_panel == (PANEL *) 0)
63    {
64
65      assert(SP_PARM && SP_PARM->_stdscr && !_nc_bottom_panel && !_nc_top_panel);
66#if NO_LEAKS
67      ph->destroy = del_panel;
68#endif
69      _nc_stdscr_pseudo_panel = typeMalloc(PANEL, 1);
70      if (_nc_stdscr_pseudo_panel != 0)
71	{
72	  PANEL *pan = _nc_stdscr_pseudo_panel;
73	  WINDOW *win = SP_PARM->_stdscr;
74
75	  pan->win = win;
76	  pan->below = (PANEL *) 0;
77	  pan->above = (PANEL *) 0;
78#ifdef TRACE
79	  if (!stdscr_id)
80	    stdscr_id = strdup("stdscr");
81	  pan->user = stdscr_id;
82#else
83	  pan->user = (void *)0;
84#endif
85	  _nc_bottom_panel = _nc_top_panel = pan;
86	}
87    }
88  return _nc_stdscr_pseudo_panel;
89}
90
91NCURSES_EXPORT(PANEL *)
92new_panel(WINDOW *win)
93{
94  PANEL *pan = (PANEL *) 0;
95
96  GetWindowHook(win);
97
98  T((T_CALLED("new_panel(%p)"), (void *)win));
99
100  if (!win)
101    returnPanel(pan);
102
103  if (!_nc_stdscr_pseudo_panel)
104    (void)root_panel(NCURSES_SP_ARG);
105  assert(_nc_stdscr_pseudo_panel);
106
107  if (!(win->_flags & _ISPAD) && (pan = typeMalloc(PANEL, 1)))
108    {
109      pan->win = win;
110      pan->above = (PANEL *) 0;
111      pan->below = (PANEL *) 0;
112#ifdef TRACE
113      if (!new_id)
114	new_id = strdup("new");
115      pan->user = new_id;
116#else
117      pan->user = (char *)0;
118#endif
119      (void)show_panel(pan);
120    }
121  returnPanel(pan);
122}
123