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28
29 /****************************************************************************
30 * Author: Juergen Pfeifer, 1995,1997 *
31 ****************************************************************************/
32
33 /***************************************************************************
34 * Module m_opts *
35 * Menus option routines *
36 ***************************************************************************/
37
38 #include "menu.priv.h"
39
40 MODULE_ID("$Id: m_opts.c,v 1.20 2010/01/23 21:20:10 tom Exp $")
41
42 /*---------------------------------------------------------------------------
43 | Facility : libnmenu
44 | Function : int set_menu_opts(MENU *menu, Menu_Options opts)
45 |
46 | Description : Set the options for this menu. If the new settings
47 | end up in a change of the geometry of the menu, it
48 | will be recalculated. This operation is forbidden if
49 | the menu is already posted.
50 |
51 | Return Values : E_OK - success
52 | E_BAD_ARGUMENT - invalid menu options
53 | E_POSTED - menu is already posted
54 +--------------------------------------------------------------------------*/
NCURSES_EXPORT(int)55 NCURSES_EXPORT(int)
56 set_menu_opts(MENU * menu, Menu_Options opts)
57 {
58 T((T_CALLED("set_menu_opts(%p,%d)"), (void *)menu, opts));
59
60 opts &= ALL_MENU_OPTS;
61
62 if (opts & ~ALL_MENU_OPTS)
63 RETURN(E_BAD_ARGUMENT);
64
65 if (menu)
66 {
67 if (menu->status & _POSTED)
68 RETURN(E_POSTED);
69
70 if ((opts & O_ROWMAJOR) != (menu->opt & O_ROWMAJOR))
71 {
72 /* we need this only if the layout really changed ... */
73 if (menu->items && menu->items[0])
74 {
75 menu->toprow = 0;
76 menu->curitem = menu->items[0];
77 assert(menu->curitem);
78 set_menu_format(menu, menu->frows, menu->fcols);
79 }
80 }
81
82 menu->opt = opts;
83
84 if (opts & O_ONEVALUE)
85 {
86 ITEM **item;
87
88 if (((item = menu->items) != (ITEM **) 0))
89 for (; *item; item++)
90 (*item)->value = FALSE;
91 }
92
93 if (opts & O_SHOWDESC) /* this also changes the geometry */
94 _nc_Calculate_Item_Length_and_Width(menu);
95 }
96 else
97 _nc_Default_Menu.opt = opts;
98
99 RETURN(E_OK);
100 }
101
102 /*---------------------------------------------------------------------------
103 | Facility : libnmenu
104 | Function : int menu_opts_off(MENU *menu, Menu_Options opts)
105 |
106 | Description : Switch off the options for this menu. If the new settings
107 | end up in a change of the geometry of the menu, it
108 | will be recalculated. This operation is forbidden if
109 | the menu is already posted.
110 |
111 | Return Values : E_OK - success
112 | E_BAD_ARGUMENT - invalid options
113 | E_POSTED - menu is already posted
114 +--------------------------------------------------------------------------*/
115 NCURSES_EXPORT(int)
menu_opts_off(MENU * menu,Menu_Options opts)116 menu_opts_off(MENU * menu, Menu_Options opts)
117 {
118 MENU *cmenu = menu; /* use a copy because set_menu_opts must detect
119
120 NULL menu itself to adjust its behavior */
121
122 T((T_CALLED("menu_opts_off(%p,%d)"), (void *)menu, opts));
123
124 opts &= ALL_MENU_OPTS;
125 if (opts & ~ALL_MENU_OPTS)
126 RETURN(E_BAD_ARGUMENT);
127 else
128 {
129 Normalize_Menu(cmenu);
130 opts = cmenu->opt & ~opts;
131 returnCode(set_menu_opts(menu, opts));
132 }
133 }
134
135 /*---------------------------------------------------------------------------
136 | Facility : libnmenu
137 | Function : int menu_opts_on(MENU *menu, Menu_Options opts)
138 |
139 | Description : Switch on the options for this menu. If the new settings
140 | end up in a change of the geometry of the menu, it
141 | will be recalculated. This operation is forbidden if
142 | the menu is already posted.
143 |
144 | Return Values : E_OK - success
145 | E_BAD_ARGUMENT - invalid menu options
146 | E_POSTED - menu is already posted
147 +--------------------------------------------------------------------------*/
148 NCURSES_EXPORT(int)
menu_opts_on(MENU * menu,Menu_Options opts)149 menu_opts_on(MENU * menu, Menu_Options opts)
150 {
151 MENU *cmenu = menu; /* use a copy because set_menu_opts must detect
152
153 NULL menu itself to adjust its behavior */
154
155 T((T_CALLED("menu_opts_on(%p,%d)"), (void *)menu, opts));
156
157 opts &= ALL_MENU_OPTS;
158 if (opts & ~ALL_MENU_OPTS)
159 RETURN(E_BAD_ARGUMENT);
160 else
161 {
162 Normalize_Menu(cmenu);
163 opts = cmenu->opt | opts;
164 returnCode(set_menu_opts(menu, opts));
165 }
166 }
167
168 /*---------------------------------------------------------------------------
169 | Facility : libnmenu
170 | Function : Menu_Options menu_opts(const MENU *menu)
171 |
172 | Description : Return the options for this menu.
173 |
174 | Return Values : Menu options
175 +--------------------------------------------------------------------------*/
176 NCURSES_EXPORT(Menu_Options)
menu_opts(const MENU * menu)177 menu_opts(const MENU * menu)
178 {
179 T((T_CALLED("menu_opts(%p)"), (const void *)menu));
180 returnMenuOpts(ALL_MENU_OPTS & Normalize_Menu(menu)->opt);
181 }
182
183 /* m_opts.c ends here */
184