1 /* $NetBSD: post.c,v 1.8 2001/06/13 10:45:59 wiz 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 if (menu->menu_win == NULL) 53 return E_BAD_ARGUMENT; 54 55 menu->in_init = 1; 56 menu->cur_item = 0; /* reset current item in case it was set before */ 57 menu->top_row = 0; /* and the top row too */ 58 if (menu->pattern != NULL) { /* and the pattern buffer....sigh */ 59 free(menu->pattern); 60 menu->plen = 0; 61 menu->match_len = 0; 62 } 63 64 if (menu->menu_init != NULL) 65 menu->menu_init(menu); 66 if (menu->item_init != NULL) 67 menu->item_init(menu); 68 69 menu->in_init = 0; 70 71 if (menu->menu_subwin == NULL) { 72 menu->we_created = 1; 73 menu->menu_subwin = derwin(menu->menu_win, menu->rows, 74 menu->cols * menu->max_item_width 75 + menu->cols, 0, 0); 76 if (menu->menu_subwin == NULL) { 77 menu->we_created = 0; 78 return E_SYSTEM_ERROR; 79 } 80 } 81 82 getmaxyx(menu->menu_subwin, maxy, maxx); 83 if ((maxx == ERR) || (maxy == ERR)) return E_SYSTEM_ERROR; 84 85 if ((menu->cols * menu->max_item_width + menu->cols - 1) > maxx) 86 return E_NO_ROOM; 87 88 for (i = 0; i < menu->item_count; i++) { 89 menu->items[i]->selected = 0; 90 } 91 92 menu->posted = 1; 93 return _menui_draw_menu(menu); 94 95 } 96 97 /* 98 * Unpost the menu. Call any defined termination routines and remove the 99 * menu from the screen. 100 */ 101 int 102 unpost_menu(MENU *menu) 103 { 104 if (menu == NULL) 105 return E_BAD_ARGUMENT; 106 if (menu->posted != 1) 107 return E_NOT_POSTED; 108 if (menu->in_init == 1) 109 return E_BAD_STATE; 110 if (menu->menu_subwin == NULL) 111 return E_SYSTEM_ERROR; 112 if (menu->menu_win == NULL) 113 return E_SYSTEM_ERROR; 114 115 if (menu->item_term != NULL) 116 menu->item_term(menu); 117 118 if (menu->menu_term != NULL) 119 menu->menu_term(menu); 120 121 menu->posted = 0; 122 werase(menu->menu_subwin); 123 wrefresh(menu->menu_subwin); 124 if (menu->we_created == 1) { 125 delwin(menu->menu_subwin); 126 menu->menu_subwin = NULL; 127 } 128 wrefresh(menu->menu_win); 129 return E_OK; 130 } 131 132 133