1 /****************************************************************************
2 * Copyright 2020 Thomas E. Dickey *
3 * Copyright 1998-2004,2010 Free Software Foundation, Inc. *
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28 ****************************************************************************/
29
30 /****************************************************************************
31 * Author: Juergen Pfeifer, 1995,1997 *
32 ****************************************************************************/
33
34 /***************************************************************************
35 * Module m_opts *
36 * Menus option routines *
37 ***************************************************************************/
38
39 #include "menu.priv.h"
40
41 MODULE_ID("$Id: m_opts.c,v 1.23 2020/12/12 00:38:08 tom Exp $")
42
43 /*---------------------------------------------------------------------------
44 | Facility : libnmenu
45 | Function : int set_menu_opts(MENU *menu, Menu_Options opts)
46 |
47 | Description : Set the options for this menu. If the new settings
48 | end up in a change of the geometry of the menu, it
49 | will be recalculated. This operation is forbidden if
50 | the menu is already posted.
51 |
52 | Return Values : E_OK - success
53 | E_BAD_ARGUMENT - invalid menu options
54 | E_POSTED - menu is already posted
55 +--------------------------------------------------------------------------*/
MENU_EXPORT(int)56 MENU_EXPORT(int)
57 set_menu_opts(MENU *menu, Menu_Options opts)
58 {
59 T((T_CALLED("set_menu_opts(%p,%d)"), (void *)menu, opts));
60
61 opts &= ALL_MENU_OPTS;
62
63 if (opts & ~ALL_MENU_OPTS)
64 RETURN(E_BAD_ARGUMENT);
65
66 if (menu)
67 {
68 if (menu->status & _POSTED)
69 RETURN(E_POSTED);
70
71 if ((opts & O_ROWMAJOR) != (menu->opt & O_ROWMAJOR))
72 {
73 /* we need this only if the layout really changed ... */
74 if (menu->items && menu->items[0])
75 {
76 menu->toprow = 0;
77 menu->curitem = menu->items[0];
78 assert(menu->curitem);
79 set_menu_format(menu, menu->frows, menu->fcols);
80 }
81 }
82
83 menu->opt = opts;
84
85 if (opts & O_ONEVALUE)
86 {
87 ITEM **item;
88
89 if (((item = menu->items) != (ITEM **)0))
90 for (; *item; item++)
91 (*item)->value = FALSE;
92 }
93
94 if (opts & O_SHOWDESC) /* this also changes the geometry */
95 _nc_Calculate_Item_Length_and_Width(menu);
96 }
97 else
98 _nc_Default_Menu.opt = opts;
99
100 RETURN(E_OK);
101 }
102
103 /*---------------------------------------------------------------------------
104 | Facility : libnmenu
105 | Function : int menu_opts_off(MENU *menu, Menu_Options opts)
106 |
107 | Description : Switch off the options for this menu. If the new settings
108 | end up in a change of the geometry of the menu, it
109 | will be recalculated. This operation is forbidden if
110 | the menu is already posted.
111 |
112 | Return Values : E_OK - success
113 | E_BAD_ARGUMENT - invalid options
114 | E_POSTED - menu is already posted
115 +--------------------------------------------------------------------------*/
116 MENU_EXPORT(int)
menu_opts_off(MENU * menu,Menu_Options opts)117 menu_opts_off(MENU *menu, Menu_Options opts)
118 {
119 MENU *cmenu = menu; /* use a copy because set_menu_opts must detect
120
121 NULL menu itself to adjust its behavior */
122
123 T((T_CALLED("menu_opts_off(%p,%d)"), (void *)menu, opts));
124
125 opts &= ALL_MENU_OPTS;
126 if (opts & ~ALL_MENU_OPTS)
127 RETURN(E_BAD_ARGUMENT);
128 else
129 {
130 Normalize_Menu(cmenu);
131 opts = cmenu->opt & ~opts;
132 returnCode(set_menu_opts(menu, opts));
133 }
134 }
135
136 /*---------------------------------------------------------------------------
137 | Facility : libnmenu
138 | Function : int menu_opts_on(MENU *menu, Menu_Options opts)
139 |
140 | Description : Switch on the options for this menu. If the new settings
141 | end up in a change of the geometry of the menu, it
142 | will be recalculated. This operation is forbidden if
143 | the menu is already posted.
144 |
145 | Return Values : E_OK - success
146 | E_BAD_ARGUMENT - invalid menu options
147 | E_POSTED - menu is already posted
148 +--------------------------------------------------------------------------*/
149 MENU_EXPORT(int)
menu_opts_on(MENU * menu,Menu_Options opts)150 menu_opts_on(MENU *menu, Menu_Options opts)
151 {
152 MENU *cmenu = menu; /* use a copy because set_menu_opts must detect
153
154 NULL menu itself to adjust its behavior */
155
156 T((T_CALLED("menu_opts_on(%p,%d)"), (void *)menu, opts));
157
158 opts &= ALL_MENU_OPTS;
159 if (opts & ~ALL_MENU_OPTS)
160 RETURN(E_BAD_ARGUMENT);
161 else
162 {
163 Normalize_Menu(cmenu);
164 opts = cmenu->opt | opts;
165 returnCode(set_menu_opts(menu, opts));
166 }
167 }
168
169 /*---------------------------------------------------------------------------
170 | Facility : libnmenu
171 | Function : Menu_Options menu_opts(const MENU *menu)
172 |
173 | Description : Return the options for this menu.
174 |
175 | Return Values : Menu options
176 +--------------------------------------------------------------------------*/
177 MENU_EXPORT(Menu_Options)
menu_opts(const MENU * menu)178 menu_opts(const MENU *menu)
179 {
180 T((T_CALLED("menu_opts(%p)"), (const void *)menu));
181 returnMenuOpts(ALL_MENU_OPTS & Normalize_Menu(menu)->opt);
182 }
183
184 /* m_opts.c ends here */
185