1/* $OpenBSD: m_opts.c,v 1.9 2023/10/17 09:52:10 nicm Exp $ */
2
3/****************************************************************************
4 * Copyright 2020 Thomas E. Dickey                                          *
5 * Copyright 1998-2004,2010 Free Software Foundation, Inc.                  *
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12 * copies of the Software, and to permit persons to whom the Software is    *
13 * furnished to do so, subject to the following conditions:                 *
14 *                                                                          *
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16 * in all copies or substantial portions of the Software.                   *
17 *                                                                          *
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19 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF               *
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31
32/****************************************************************************
33 *   Author:  Juergen Pfeifer, 1995,1997                                    *
34 ****************************************************************************/
35
36/***************************************************************************
37* Module m_opts                                                            *
38* Menus option routines                                                    *
39***************************************************************************/
40
41#include "menu.priv.h"
42
43MODULE_ID("$Id: m_opts.c,v 1.9 2023/10/17 09:52:10 nicm Exp $")
44
45/*---------------------------------------------------------------------------
46|   Facility      :  libnmenu
47|   Function      :  int set_menu_opts(MENU *menu, Menu_Options opts)
48|
49|   Description   :  Set the options for this menu. If the new settings
50|                    end up in a change of the geometry of the menu, it
51|                    will be recalculated. This operation is forbidden if
52|                    the menu is already posted.
53|
54|   Return Values :  E_OK           - success
55|                    E_BAD_ARGUMENT - invalid menu options
56|                    E_POSTED       - menu is already posted
57+--------------------------------------------------------------------------*/
58MENU_EXPORT(int)
59set_menu_opts(MENU *menu, Menu_Options opts)
60{
61  T((T_CALLED("set_menu_opts(%p,%d)"), (void *)menu, opts));
62
63  opts &= ALL_MENU_OPTS;
64
65  if (opts & ~ALL_MENU_OPTS)
66    RETURN(E_BAD_ARGUMENT);
67
68  if (menu)
69    {
70      if (menu->status & _POSTED)
71	RETURN(E_POSTED);
72
73      if ((opts & O_ROWMAJOR) != (menu->opt & O_ROWMAJOR))
74	{
75	  /* we need this only if the layout really changed ... */
76	  if (menu->items && menu->items[0])
77	    {
78	      menu->toprow = 0;
79	      menu->curitem = menu->items[0];
80	      assert(menu->curitem);
81	      set_menu_format(menu, menu->frows, menu->fcols);
82	    }
83	}
84
85      menu->opt = opts;
86
87      if (opts & O_ONEVALUE)
88	{
89	  ITEM **item;
90
91	  if (((item = menu->items) != (ITEM **)0))
92	    for (; *item; item++)
93	      (*item)->value = FALSE;
94	}
95
96      if (opts & O_SHOWDESC)	/* this also changes the geometry */
97	_nc_Calculate_Item_Length_and_Width(menu);
98    }
99  else
100    _nc_Default_Menu.opt = opts;
101
102  RETURN(E_OK);
103}
104
105/*---------------------------------------------------------------------------
106|   Facility      :  libnmenu
107|   Function      :  int menu_opts_off(MENU *menu, Menu_Options opts)
108|
109|   Description   :  Switch off the options for this menu. If the new settings
110|                    end up in a change of the geometry of the menu, it
111|                    will be recalculated. This operation is forbidden if
112|                    the menu is already posted.
113|
114|   Return Values :  E_OK           - success
115|                    E_BAD_ARGUMENT - invalid options
116|                    E_POSTED       - menu is already posted
117+--------------------------------------------------------------------------*/
118MENU_EXPORT(int)
119menu_opts_off(MENU *menu, Menu_Options opts)
120{
121  MENU *cmenu = menu;		/* use a copy because set_menu_opts must detect
122
123				   NULL menu itself to adjust its behavior */
124
125  T((T_CALLED("menu_opts_off(%p,%d)"), (void *)menu, opts));
126
127  opts &= ALL_MENU_OPTS;
128  if (opts & ~ALL_MENU_OPTS)
129    RETURN(E_BAD_ARGUMENT);
130  else
131    {
132      Normalize_Menu(cmenu);
133      opts = cmenu->opt & ~opts;
134      returnCode(set_menu_opts(menu, opts));
135    }
136}
137
138/*---------------------------------------------------------------------------
139|   Facility      :  libnmenu
140|   Function      :  int menu_opts_on(MENU *menu, Menu_Options opts)
141|
142|   Description   :  Switch on the options for this menu. If the new settings
143|                    end up in a change of the geometry of the menu, it
144|                    will be recalculated. This operation is forbidden if
145|                    the menu is already posted.
146|
147|   Return Values :  E_OK           - success
148|                    E_BAD_ARGUMENT - invalid menu options
149|                    E_POSTED       - menu is already posted
150+--------------------------------------------------------------------------*/
151MENU_EXPORT(int)
152menu_opts_on(MENU *menu, Menu_Options opts)
153{
154  MENU *cmenu = menu;		/* use a copy because set_menu_opts must detect
155
156				   NULL menu itself to adjust its behavior */
157
158  T((T_CALLED("menu_opts_on(%p,%d)"), (void *)menu, opts));
159
160  opts &= ALL_MENU_OPTS;
161  if (opts & ~ALL_MENU_OPTS)
162    RETURN(E_BAD_ARGUMENT);
163  else
164    {
165      Normalize_Menu(cmenu);
166      opts = cmenu->opt | opts;
167      returnCode(set_menu_opts(menu, opts));
168    }
169}
170
171/*---------------------------------------------------------------------------
172|   Facility      :  libnmenu
173|   Function      :  Menu_Options menu_opts(const MENU *menu)
174|
175|   Description   :  Return the options for this menu.
176|
177|   Return Values :  Menu options
178+--------------------------------------------------------------------------*/
179MENU_EXPORT(Menu_Options)
180menu_opts(const MENU *menu)
181{
182  T((T_CALLED("menu_opts(%p)"), (const void *)menu));
183  returnMenuOpts(ALL_MENU_OPTS & Normalize_Menu(menu)->opt);
184}
185
186/* m_opts.c ends here */
187