105 lines
4.4 KiB
C
105 lines
4.4 KiB
C
/****************************************************************************
|
|
* Copyright (c) 1998,2000 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_item_top *
|
|
* Set and get top menus item *
|
|
***************************************************************************/
|
|
|
|
#include "menu.priv.h"
|
|
|
|
MODULE_ID("$Id: m_item_top.c,v 1.5 2000/12/10 02:16:48 tom Exp $")
|
|
|
|
/*---------------------------------------------------------------------------
|
|
| Facility : libnmenu
|
|
| Function : int set_top_row(MENU *menu, int row)
|
|
|
|
|
| Description : Makes the speified row the top row in the menu
|
|
|
|
|
| Return Values : E_OK - success
|
|
| E_BAD_ARGUMENT - not a menu pointer or invalid row
|
|
| E_NOT_CONNECTED - there are no items for the menu
|
|
+--------------------------------------------------------------------------*/
|
|
NCURSES_EXPORT(int)
|
|
set_top_row (MENU * menu, int row)
|
|
{
|
|
ITEM *item;
|
|
|
|
if (menu)
|
|
{
|
|
if ( menu->status & _IN_DRIVER )
|
|
RETURN(E_BAD_STATE);
|
|
if (menu->items == (ITEM **)0)
|
|
RETURN(E_NOT_CONNECTED);
|
|
|
|
if ((row<0) || (row > (menu->rows - menu->arows)))
|
|
RETURN(E_BAD_ARGUMENT);
|
|
}
|
|
else
|
|
RETURN(E_BAD_ARGUMENT);
|
|
|
|
if (row != menu->toprow)
|
|
{
|
|
if (menu->status & _LINK_NEEDED)
|
|
_nc_Link_Items(menu);
|
|
|
|
item = menu->items[ (menu->opt&O_ROWMAJOR) ? (row*menu->cols) : row ];
|
|
assert(menu->pattern);
|
|
Reset_Pattern(menu);
|
|
_nc_New_TopRow_and_CurrentItem(menu, row, item);
|
|
}
|
|
|
|
RETURN(E_OK);
|
|
}
|
|
|
|
/*---------------------------------------------------------------------------
|
|
| Facility : libnmenu
|
|
| Function : int top_row(const MENU *)
|
|
|
|
|
| Description : Return the top row of the menu
|
|
|
|
|
| Return Values : The row number or ERR if there is no row
|
|
+--------------------------------------------------------------------------*/
|
|
NCURSES_EXPORT(int)
|
|
top_row (const MENU * menu)
|
|
{
|
|
if (menu && menu->items && *(menu->items))
|
|
{
|
|
assert( (menu->toprow>=0) && (menu->toprow < menu->rows) );
|
|
return menu->toprow;
|
|
}
|
|
else
|
|
return(ERR);
|
|
}
|
|
|
|
/* m_item_top.c ends here */
|