1 /* $NetBSD: post.c,v 1.9 2002/02/04 13:02:06 blymn Exp $ */ 2 3 /*- 4 * Copyright (c) 1998-1999 Brett Lymn (blymn@baea.com.au, brett_lymn@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 <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 *menu) 39 { 40 int maxx, maxy, i; 41 42 if (menu == NULL) 43 return E_BAD_ARGUMENT; 44 if (menu->posted == 1) 45 return E_POSTED; 46 if (menu->in_init == 1) 47 return E_BAD_STATE; 48 if (menu->items == NULL) 49 return E_NOT_CONNECTED; 50 if (*menu->items == NULL) 51 return E_NOT_CONNECTED; 52 53 menu->in_init = 1; 54 menu->cur_item = 0; /* reset current item in case it was set before */ 55 menu->top_row = 0; /* and the top row too */ 56 if (menu->pattern != NULL) { /* and the pattern buffer....sigh */ 57 free(menu->pattern); 58 menu->plen = 0; 59 menu->match_len = 0; 60 } 61 62 if (menu->menu_init != NULL) 63 menu->menu_init(menu); 64 if (menu->item_init != NULL) 65 menu->item_init(menu); 66 67 menu->in_init = 0; 68 69 getmaxyx(menu->scrwin, maxy, maxx); 70 if ((maxx == ERR) || (maxy == ERR)) return E_SYSTEM_ERROR; 71 72 if ((menu->cols * menu->max_item_width + menu->cols - 1) > maxx) 73 return E_NO_ROOM; 74 75 for (i = 0; i < menu->item_count; i++) { 76 menu->items[i]->selected = 0; 77 } 78 79 menu->posted = 1; 80 return _menui_draw_menu(menu); 81 82 } 83 84 /* 85 * Unpost the menu. Call any defined termination routines and remove the 86 * menu from the screen. 87 */ 88 int 89 unpost_menu(MENU *menu) 90 { 91 if (menu == NULL) 92 return E_BAD_ARGUMENT; 93 if (menu->posted != 1) 94 return E_NOT_POSTED; 95 if (menu->in_init == 1) 96 return E_BAD_STATE; 97 if (menu->item_term != NULL) 98 menu->item_term(menu); 99 100 if (menu->menu_term != NULL) 101 menu->menu_term(menu); 102 103 menu->posted = 0; 104 werase(menu->scrwin); 105 wrefresh(menu->scrwin); 106 return E_OK; 107 } 108 109 110