1 /* 2 * $Id: yesno.c,v 1.72 2022/04/03 22:38:16 tom Exp $ 3 * 4 * yesno.c -- implements the yes/no box 5 * 6 * Copyright 1999-2020,2022 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 <dlg_internals.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 HELPKEY_BINDINGS, 39 ENTERKEY_BINDINGS, 40 SCROLLKEY_BINDINGS, 41 TRAVERSE_BINDINGS, 42 END_KEYS_BINDING 43 }; 44 /* *INDENT-ON* */ 45 46 int x, y; 47 int key, fkey; 48 int button = dlg_default_button(); 49 WINDOW *dialog = 0; 50 int result = DLG_EXIT_UNKNOWN; 51 char *prompt; 52 const char **buttons = dlg_yes_labels(); 53 int min_width = 25; 54 bool show = TRUE; 55 int page, last = 0, offset = 0; 56 57 #ifdef KEY_RESIZE 58 int req_high = height; 59 int req_wide = width; 60 #endif 61 62 DLG_TRACE(("# yesno args:\n")); 63 DLG_TRACE2S("title", title); 64 DLG_TRACE2S("message", cprompt); 65 DLG_TRACE2N("height", height); 66 DLG_TRACE2N("width", width); 67 68 #ifdef KEY_RESIZE 69 restart: 70 #endif 71 prompt = dlg_strclone(cprompt); 72 dlg_tab_correct_str(prompt); 73 dlg_button_layout(buttons, &min_width); 74 dlg_auto_size(title, prompt, &height, &width, 2, min_width); 75 dlg_print_size(height, width); 76 dlg_ctl_size(height, width); 77 78 x = dlg_box_x_ordinate(width); 79 y = dlg_box_y_ordinate(height); 80 81 dialog = dlg_new_window(height, width, y, x); 82 dlg_register_window(dialog, "yesno", binding); 83 dlg_register_buttons(dialog, "yesno", buttons); 84 85 dlg_draw_box2(dialog, 0, 0, height, width, dialog_attr, border_attr, border2_attr); 86 dlg_draw_bottom_box2(dialog, border_attr, border2_attr, dialog_attr); 87 dlg_draw_title(dialog, title); 88 dlg_draw_helpline(dialog, FALSE); 89 90 dlg_attrset(dialog, dialog_attr); 91 92 page = height - (1 + 3 * MARGIN); 93 dlg_draw_buttons(dialog, 94 height - 2 * MARGIN, 0, 95 buttons, button, FALSE, width); 96 97 while (result == DLG_EXIT_UNKNOWN) { 98 int code; 99 100 if (show) { 101 last = dlg_print_scrolled(dialog, prompt, offset, 102 page, width, TRUE); 103 dlg_trace_win(dialog); 104 show = FALSE; 105 } 106 key = dlg_mouse_wgetch(dialog, &fkey); 107 if (dlg_result_key(key, fkey, &result)) { 108 if (!dlg_button_key(result, &button, &key, &fkey)) 109 break; 110 } 111 if ((code = dlg_char_to_button(key, buttons)) >= 0) { 112 result = dlg_ok_buttoncode(code); 113 break; 114 } 115 /* handle function keys */ 116 if (fkey) { 117 switch (key) { 118 case DLGK_FIELD_NEXT: 119 button = dlg_next_button(buttons, button); 120 if (button < 0) 121 button = 0; 122 dlg_draw_buttons(dialog, 123 height - 2, 0, 124 buttons, button, 125 FALSE, width); 126 break; 127 case DLGK_FIELD_PREV: 128 button = dlg_prev_button(buttons, button); 129 if (button < 0) 130 button = 0; 131 dlg_draw_buttons(dialog, 132 height - 2, 0, 133 buttons, button, 134 FALSE, width); 135 break; 136 case DLGK_ENTER: 137 case DLGK_LEAVE: 138 result = dlg_yes_buttoncode(button); 139 break; 140 #ifdef KEY_RESIZE 141 case KEY_RESIZE: 142 dlg_will_resize(dialog); 143 height = req_high; 144 width = req_wide; 145 show = TRUE; 146 free(prompt); 147 _dlg_resize_cleanup(dialog); 148 goto restart; 149 #endif 150 default: 151 if (is_DLGK_MOUSE(key)) { 152 result = dlg_yes_buttoncode(key - M_EVENT); 153 if (result < 0) 154 result = DLG_EXIT_OK; 155 } else if (dlg_check_scrolled(key, last, page, 156 &show, &offset) != 0) { 157 beep(); 158 } 159 break; 160 } 161 } else if (key > 0) { 162 beep(); 163 } 164 } 165 dlg_add_last_key(-1); 166 167 dlg_del_window(dialog); 168 dlg_mouse_free_regions(); 169 free(prompt); 170 return result; 171 } 172