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      1 /*	$NetBSD: post.c,v 1.12 2003/04/19 12:52:39 blymn Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 1998-1999 Brett Lymn (blymn (at) baea.com.au, brett_lymn (at) yahoo.com.au)
      5  * All rights reserved.
      6  *
      7  * Redistribution and use in source and binary forms, with or without
      8  * modification, are permitted provided that the following conditions
      9  * are met:
     10  * 1. Redistributions of source code must retain the above copyright
     11  *    notice, this list of conditions and the following disclaimer.
     12  * 2. The name of the author may not be used to endorse or promote products
     13  *    derived from this software without specific prior written permission
     14  *
     15  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
     16  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     17  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     18  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
     19  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
     20  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     21  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     22  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     23  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
     24  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     25  *
     26  *
     27  */
     28 
     29 #include <sys/cdefs.h>
     30 __RCSID("$NetBSD: post.c,v 1.12 2003/04/19 12:52:39 blymn Exp $");
     31 
     32 #include <menu.h>
     33 #include <stdlib.h>
     34 #include "internals.h"
     35 
     36 /*
     37  * Post the menu to the screen.  Call any defined init routines and then
     38  * draw the menu on the screen.
     39  */
     40 int
     41 post_menu(MENU *menu)
     42 {
     43 	int maxx, maxy, i;
     44 
     45 	if (menu == NULL)
     46 		return E_BAD_ARGUMENT;
     47 	if (menu->posted == 1)
     48 		return E_POSTED;
     49 	if (menu->in_init == 1)
     50 		return E_BAD_STATE;
     51 	if (menu->items == NULL)
     52 		return E_NOT_CONNECTED;
     53 	if (*menu->items == NULL)
     54 		return E_NOT_CONNECTED;
     55 
     56 	menu->in_init = 1;
     57 
     58 	if (menu->menu_init != NULL)
     59 		menu->menu_init(menu);
     60 	if (menu->item_init != NULL)
     61 		menu->item_init(menu);
     62 
     63 	menu->in_init = 0;
     64 
     65 	getmaxyx(menu->scrwin, maxy, maxx);
     66 	if ((maxx == ERR) || (maxy == ERR)) return E_SYSTEM_ERROR;
     67 
     68 	if ((menu->cols * menu->max_item_width + menu->cols - 1) > maxx)
     69 		return E_NO_ROOM;
     70 
     71 	if ((menu->opts & O_RADIO) != O_RADIO) {
     72 		for (i = 0; i < menu->item_count; i++) {
     73 			menu->items[i]->selected = 0;
     74 		}
     75 	}
     76 
     77 	menu->posted = 1;
     78 	return _menui_draw_menu(menu);
     79 
     80 }
     81 
     82 /*
     83  * Unpost the menu.  Call any defined termination routines and remove the
     84  * menu from the screen.
     85  */
     86 int
     87 unpost_menu(MENU *menu)
     88 {
     89 	if (menu == NULL)
     90 		return E_BAD_ARGUMENT;
     91 	if (menu->posted != 1)
     92 		return E_NOT_POSTED;
     93 	if (menu->in_init == 1)
     94 		return E_BAD_STATE;
     95 	if (menu->item_term != NULL)
     96 		menu->item_term(menu);
     97 
     98 	if (menu->menu_term != NULL)
     99 		menu->menu_term(menu);
    100 
    101 	menu->posted = 0;
    102 	werase(menu->scrwin);
    103 	wrefresh(menu->scrwin);
    104 	return E_OK;
    105 }
    106 
    107 
    108