freebsd-dev/contrib/ncurses/menu/m_opts.c

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/****************************************************************************
* Copyright (c) 1998 Free Software Foundation, Inc. *
* *
* Permission is hereby granted, free of charge, to any person obtaining a *
* copy of this software and associated documentation files (the *
* "Software"), to deal in the Software without restriction, including *
* without limitation the rights to use, copy, modify, merge, publish, *
* distribute, distribute with modifications, sublicense, and/or sell *
* copies of the Software, and to permit persons to whom the Software is *
* furnished to do so, subject to the following conditions: *
* *
* The above copyright notice and this permission notice shall be included *
* in all copies or substantial portions of the Software. *
* *
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS *
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF *
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. *
* IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, *
* DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR *
* OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR *
* THE USE OR OTHER DEALINGS IN THE SOFTWARE. *
* *
* Except as contained in this notice, the name(s) of the above copyright *
* holders shall not be used in advertising or otherwise to promote the *
* sale, use or other dealings in this Software without prior written *
* authorization. *
****************************************************************************/
/****************************************************************************
* Author: Juergen Pfeifer <juergen.pfeifer@gmx.net> 1995,1997 *
****************************************************************************/
/***************************************************************************
* Module m_opts *
* Menus option routines *
***************************************************************************/
#include "menu.priv.h"
MODULE_ID("$Id: m_opts.c,v 1.12 1999/05/16 17:27:08 juergen Exp $")
/*---------------------------------------------------------------------------
| 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)
{
opts &= ALL_MENU_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) != (ITEM**)0) )
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 */
opts &= ALL_MENU_OPTS;
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 */
opts &= ALL_MENU_OPTS;
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 */