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/***************************************************************************
* COPYRIGHT NOTICE *
****************************************************************************
* ncurses is copyright (C) 1992-1995 *
* Zeyd M. Ben-Halim *
* zmbenhal@netcom.com *
* Eric S. Raymond *
* esr@snark.thyrsus.com *
* *
* Permission is hereby granted to reproduce and distribute ncurses *
* by any means and for any fee, whether alone or as part of a *
* larger distribution, in source or in binary form, PROVIDED *
* this notice is included with any such distribution, and is not *
* removed from any of its header files. Mention of ncurses in any *
* applications linked with it is highly appreciated. *
* *
* ncurses comes AS IS with no warranty, implied or expressed. *
* *
***************************************************************************/
/***************************************************************************
* Module menu_opts *
* Menus option routines *
***************************************************************************/
#include "menu.priv.h"
/*---------------------------------------------------------------------------
| Facility : libnmenu
| Function : int set_menu_opts(MENU *menu, Menu_Options opts)
|
| Description : Set the options for this menu. If the new settings
| end up in a change of the geometry of the menu, it
| will be recalculated. This operation is forbidden if
| the menu is already posted.
|
| Return Values : E_OK - success
| E_BAD_ARGUMENT - invalid menu options
| E_POSTED - menu is already posted
+--------------------------------------------------------------------------*/
int set_menu_opts(MENU * menu, Menu_Options opts)
{
if (opts & ~ALL_MENU_OPTS)
RETURN(E_BAD_ARGUMENT);
if (menu)
{
if ( menu->status & _POSTED )
RETURN(E_POSTED);
if ( (opts&O_ROWMAJOR) != (menu->opt&O_ROWMAJOR))
{
/* we need this only if the layout really changed ... */
if (menu->items && menu->items[0])
{
menu->toprow = 0;
menu->curitem = menu->items[0];
assert(menu->curitem);
set_menu_format( menu, menu->frows, menu->fcols );
}
}
menu->opt = opts;
if (opts & O_ONEVALUE)
{
ITEM **item;
if ( (item=menu->items) )
for(;*item;item++)
(*item)->value = FALSE;
}
if (opts & O_SHOWDESC) /* this also changes the geometry */
_nc_Calculate_Item_Length_and_Width( menu );
}
else
_nc_Default_Menu.opt = opts;
RETURN(E_OK);
}
/*---------------------------------------------------------------------------
| Facility : libnmenu
| Function : int menu_opts_off(MENU *menu, Menu_Options opts)
|
| Description : Switch off the options for this menu. If the new settings
| end up in a change of the geometry of the menu, it
| will be recalculated. This operation is forbidden if
| the menu is already posted.
|
| Return Values : E_OK - success
| E_BAD_ARGUMENT - invalid options
| E_POSTED - menu is already posted
+--------------------------------------------------------------------------*/
int menu_opts_off(MENU *menu, Menu_Options opts)
{
MENU *cmenu = menu; /* use a copy because set_menu_opts must detect
NULL menu itself to adjust its behaviour */
if (opts & ~ALL_MENU_OPTS)
RETURN(E_BAD_ARGUMENT);
else
{
Normalize_Menu(cmenu);
opts = cmenu->opt & ~opts;
return set_menu_opts( menu, opts );
}
}
/*---------------------------------------------------------------------------
| Facility : libnmenu
| Function : int menu_opts_on(MENU *menu, Menu_Options opts)
|
| Description : Switch on the options for this menu. If the new settings
| end up in a change of the geometry of the menu, it
| will be recalculated. This operation is forbidden if
| the menu is already posted.
|
| Return Values : E_OK - success
| E_BAD_ARGUMENT - invalid menu options
| E_POSTED - menu is already posted
+--------------------------------------------------------------------------*/
int menu_opts_on(MENU * menu, Menu_Options opts)
{
MENU *cmenu = menu; /* use a copy because set_menu_opts must detect
NULL menu itself to adjust its behaviour */
if (opts & ~ALL_MENU_OPTS)
RETURN(E_BAD_ARGUMENT);
else
{
Normalize_Menu(cmenu);
opts = cmenu->opt | opts;
return set_menu_opts(menu, opts);
}
}
/*---------------------------------------------------------------------------
| Facility : libnmenu
| Function : Menu_Options menu_opts(const MENU *menu)
|
| Description : Return the options for this menu.
|
| Return Values : Menu options
+--------------------------------------------------------------------------*/
Menu_Options menu_opts(const MENU *menu)
{
return (ALL_MENU_OPTS & Normalize_Menu( menu )->opt);
}
/* m_opts.c ends here */
|
