release/src/router/libncurses/menu/m_opts.c

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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 +--------------------------------------------------------------------------*/
  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)
 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)
 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)
 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 */