Home | History | Annotate | Line # | Download | only in libmenu
post.c revision 1.1.1.1 
      1 /*      $Id: post.c,v 1.1.1.1 1999/11/23 11:12:34 blymn Exp $ */
      2 
      3 /*-
      4  * Copyright (c) 1998-1999 Brett Lymn (blymn (at) baea.com.au, brett_lymn (at) yahoo.com)
      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 withough 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 <menu.h>
     30 #include <stdlib.h>
     31 #include "internals.h"
     32 
     33 /*
     34  * Post the menu to the screen.  Call any defined init routines and then
     35  * draw the menu on the screen.
     36  */
     37 int
     38 post_menu(menu)
     39 	MENU *menu;
     40 {
     41 	int maxx, maxy, i;
     42 
     43 	if (menu == NULL)
     44 		return E_BAD_ARGUMENT;
     45 	if (menu->posted == 1)
     46 		return E_POSTED;
     47 	if (menu->in_init == 1)
     48 		return E_BAD_STATE;
     49 	if (menu->items == NULL)
     50 		return E_NOT_CONNECTED;
     51 	if (*menu->items == NULL)
     52 		return E_NOT_CONNECTED;
     53 	if (menu->menu_win == NULL)
     54 		return E_BAD_ARGUMENT;
     55 
     56 	getmaxyx(menu->menu_subwin, maxy, maxx);
     57 	if ((maxx == ERR) || (maxy == ERR)) return E_SYSTEM_ERROR;
     58 
     59 	menu->in_init = 1;
     60 	menu->cur_item = 0; /* reset current item in case it was set before */
     61 	menu->top_row = 0; /* and the top row too */
     62 	if (menu->pattern != NULL) { /* and the pattern buffer....sigh */
     63 		free(menu->pattern);
     64 		menu->plen = 0;
     65 		menu->match_len = 0;
     66 	}
     67 
     68 	if (menu->menu_init != NULL)
     69 		menu->menu_init(menu);
     70 	if (menu->item_init != NULL)
     71 		menu->item_init(menu);
     72 
     73 	menu->in_init = 0;
     74 
     75 	if (menu->menu_subwin == NULL) {
     76 		menu->we_created = 1;
     77 		menu->menu_subwin = subwin(menu->menu_win, menu->rows,
     78 					   menu->cols * menu->max_item_width,
     79 					   0, 0);
     80 		if (menu->menu_subwin == NULL) {
     81 			menu->we_created = 0;
     82 			return E_SYSTEM_ERROR;
     83 		}
     84 	}
     85 
     86 	if ((menu->cols * menu->max_item_width + menu->cols - 1) > maxx)
     87 		return E_NO_ROOM;
     88 
     89 	for (i = 0; i < menu->item_count; i++) {
     90 		menu->items[i]->selected = 0;
     91 	}
     92 
     93 	menu->posted = 1;
     94 	return __menui_draw_menu(menu);
     95 
     96 }
     97 
     98 /*
     99  * Unpost the menu.  Call any defined termination routines and remove the
    100  * menu from the screen.
    101  */
    102 int
    103 unpost_menu(menu)
    104 	MENU *menu;
    105 {
    106 	if (menu == NULL)
    107 		return E_BAD_ARGUMENT;
    108 	if (menu->posted != 1)
    109 		return E_NOT_POSTED;
    110 	if (menu->in_init == 1)
    111 		return E_BAD_STATE;
    112 	if (menu->menu_subwin == NULL)
    113 		return E_SYSTEM_ERROR;
    114 	if (menu->menu_win == NULL)
    115 		return E_SYSTEM_ERROR;
    116 
    117 	if (menu->item_term != NULL)
    118 		menu->item_term(menu);
    119 
    120 	if (menu->menu_term != NULL)
    121 		menu->menu_term(menu);
    122 
    123 	menu->posted = 0;
    124 	werase(menu->menu_subwin);
    125 	wrefresh(menu->menu_subwin);
    126 	delwin(menu->menu_subwin);
    127 	if (menu->we_created == 1) menu->menu_subwin = NULL;
    128 	wrefresh(menu->menu_win);
    129 	return E_OK;
    130 }
    131 
    132 
    133