1 /* 2 * $Id: yesno.c,v 1.49 2010/01/15 10:54:54 tom Exp $ 3 * 4 * yesno.c -- implements the yes/no box 5 * 6 * Copyright 1999-2009,2010 Thomas E. Dickey 7 * 8 * This program is free software; you can redistribute it and/or modify 9 * it under the terms of the GNU Lesser General Public License, version 2.1 10 * as published by the Free Software Foundation. 11 * 12 * This program is distributed in the hope that it will be useful, but 13 * WITHOUT ANY WARRANTY; without even the implied warranty of 14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 15 * Lesser General Public License for more details. 16 * 17 * You should have received a copy of the GNU Lesser General Public 18 * License along with this program; if not, write to 19 * Free Software Foundation, Inc. 20 * 51 Franklin St., Fifth Floor 21 * Boston, MA 02110, USA. 22 * 23 * An earlier version of this program lists as authors 24 * Savio Lam (lam836@cs.cuhk.hk) 25 */ 26 27 #include <dialog.h> 28 #include <dlg_keys.h> 29 30 /* 31 * Display a dialog box with two buttons - Yes and No. 32 */ 33 int 34 dialog_yesno(const char *title, const char *cprompt, int height, int width) 35 { 36 /* *INDENT-OFF* */ 37 static DLG_KEYS_BINDING binding[] = { 38 ENTERKEY_BINDINGS, 39 DLG_KEYS_DATA( DLGK_ENTER, ' ' ), 40 DLG_KEYS_DATA( DLGK_FIELD_NEXT, KEY_DOWN ), 41 DLG_KEYS_DATA( DLGK_FIELD_NEXT, KEY_RIGHT ), 42 DLG_KEYS_DATA( DLGK_FIELD_NEXT, TAB ), 43 DLG_KEYS_DATA( DLGK_FIELD_PREV, KEY_UP ), 44 DLG_KEYS_DATA( DLGK_FIELD_PREV, KEY_BTAB ), 45 DLG_KEYS_DATA( DLGK_FIELD_PREV, KEY_LEFT ), 46 SCROLLKEY_BINDINGS, 47 END_KEYS_BINDING 48 }; 49 /* *INDENT-ON* */ 50 51 int x, y; 52 int key = 0, fkey; 53 int code; 54 int button = dlg_defaultno_button(); 55 WINDOW *dialog = 0; 56 int result = DLG_EXIT_UNKNOWN; 57 char *prompt = dlg_strclone(cprompt); 58 const char **buttons = dlg_yes_labels(); 59 int min_width = 25; 60 bool show = TRUE; 61 int page, last = 0, offset = 0; 62 63 #ifdef KEY_RESIZE 64 int req_high = height; 65 int req_wide = width; 66 restart: 67 #endif 68 69 dlg_tab_correct_str(prompt); 70 dlg_button_layout(buttons, &min_width); 71 dlg_auto_size(title, prompt, &height, &width, 2, min_width); 72 dlg_print_size(height, width); 73 dlg_ctl_size(height, width); 74 75 x = dlg_box_x_ordinate(width); 76 y = dlg_box_y_ordinate(height); 77 78 #ifdef KEY_RESIZE 79 if (dialog != 0) 80 dlg_move_window(dialog, height, width, y, x); 81 else 82 #endif 83 { 84 dialog = dlg_new_window(height, width, y, x); 85 dlg_register_window(dialog, "yesno", binding); 86 dlg_register_buttons(dialog, "yesno", buttons); 87 } 88 89 dlg_draw_box(dialog, 0, 0, height, width, dialog_attr, border_attr); 90 dlg_draw_bottom_box(dialog); 91 dlg_draw_title(dialog, title); 92 93 wattrset(dialog, dialog_attr); 94 95 page = height - (1 + 3 * MARGIN); 96 dlg_draw_buttons(dialog, 97 height - 2 * MARGIN, 0, 98 buttons, button, FALSE, width); 99 100 while (result == DLG_EXIT_UNKNOWN) { 101 if (show) { 102 last = dlg_print_scrolled(dialog, prompt, offset, 103 page, width, TRUE); 104 show = FALSE; 105 } 106 key = dlg_mouse_wgetch(dialog, &fkey); 107 if (dlg_result_key(key, fkey, &result)) 108 break; 109 if ((code = dlg_char_to_button(key, buttons)) >= 0) { 110 result = dlg_ok_buttoncode(code); 111 break; 112 } 113 /* handle function keys */ 114 if (fkey) { 115 switch (key) { 116 case DLGK_FIELD_NEXT: 117 button = dlg_next_button(buttons, button); 118 if (button < 0) 119 button = 0; 120 dlg_draw_buttons(dialog, 121 height - 2, 0, 122 buttons, button, 123 FALSE, width); 124 break; 125 case DLGK_FIELD_PREV: 126 button = dlg_prev_button(buttons, button); 127 if (button < 0) 128 button = 0; 129 dlg_draw_buttons(dialog, 130 height - 2, 0, 131 buttons, button, 132 FALSE, width); 133 break; 134 case DLGK_ENTER: 135 result = dlg_yes_buttoncode(button); 136 break; 137 #ifdef KEY_RESIZE 138 case KEY_RESIZE: 139 dlg_clear(); 140 height = req_high; 141 width = req_wide; 142 goto restart; 143 #endif 144 default: 145 if (is_DLGK_MOUSE(key)) { 146 result = dlg_yes_buttoncode(key - M_EVENT); 147 if (result < 0) 148 result = DLG_EXIT_OK; 149 } else if (dlg_check_scrolled(key, last, page, 150 &show, &offset) != 0) { 151 beep(); 152 } 153 break; 154 } 155 } else { 156 beep(); 157 } 158 } 159 160 dlg_del_window(dialog); 161 dlg_mouse_free_regions(); 162 free(prompt); 163 return result; 164 } 165