1/* 2 * $Id: inputbox.c,v 1.84 2018/06/21 23:29:35 tom Exp $ 3 * 4 * inputbox.c -- implements the input box 5 * 6 * Copyright 2000-2016,2018 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#define sTEXT -1 31 32#define NAVIGATE_BINDINGS \ 33 DLG_KEYS_DATA( DLGK_FIELD_NEXT, KEY_DOWN ), \ 34 DLG_KEYS_DATA( DLGK_FIELD_NEXT, KEY_RIGHT ), \ 35 DLG_KEYS_DATA( DLGK_FIELD_NEXT, TAB ), \ 36 DLG_KEYS_DATA( DLGK_FIELD_PREV, KEY_BTAB ), \ 37 DLG_KEYS_DATA( DLGK_FIELD_PREV, KEY_LEFT ), \ 38 DLG_KEYS_DATA( DLGK_FIELD_PREV, KEY_UP ) 39 40/* 41 * Display a dialog box for entering a string 42 */ 43int 44dialog_inputbox(const char *title, const char *cprompt, int height, int width, 45 const char *init, const int password) 46{ 47 /* *INDENT-OFF* */ 48 static DLG_KEYS_BINDING binding[] = { 49 HELPKEY_BINDINGS, 50 ENTERKEY_BINDINGS, 51 NAVIGATE_BINDINGS, 52 TOGGLEKEY_BINDINGS, 53 END_KEYS_BINDING 54 }; 55 static DLG_KEYS_BINDING binding2[] = { 56 INPUTSTR_BINDINGS, 57 HELPKEY_BINDINGS, 58 ENTERKEY_BINDINGS, 59 NAVIGATE_BINDINGS, 60 /* no TOGGLEKEY_BINDINGS, since that includes space... */ 61 END_KEYS_BINDING 62 }; 63 /* *INDENT-ON* */ 64 65#ifdef KEY_RESIZE 66 int old_height = height; 67 int old_width = width; 68#endif 69 int xorg, yorg; 70 int x, y, box_y, box_x, box_width; 71 int show_buttons; 72 int col_offset = 0; 73 int chr_offset = 0; 74 int key, fkey, code; 75 int result = DLG_EXIT_UNKNOWN; 76 int state; 77 bool first; 78 bool edited; 79 char *input; 80 WINDOW *dialog; 81 WINDOW *editor; 82 char *prompt = dlg_strclone(cprompt); 83 const char **buttons = dlg_ok_labels(); 84 85 dlg_does_output(); 86 87 DLG_TRACE(("# inputbox args:\n")); 88 DLG_TRACE2S("title", title); 89 DLG_TRACE2S("message", cprompt); 90 DLG_TRACE2N("height", height); 91 DLG_TRACE2N("width", width); 92 DLG_TRACE2S("init", init); 93 DLG_TRACE2N("password", password); 94 95 dlg_tab_correct_str(prompt); 96 97 /* Set up the initial value */ 98 input = dlg_set_result(init); 99 edited = FALSE; 100 101#ifdef KEY_RESIZE 102 retry: 103#endif 104 show_buttons = TRUE; 105 state = dialog_vars.default_button >= 0 ? dlg_default_button() : sTEXT; 106 first = (state == sTEXT); 107 key = fkey = 0; 108 109 if (init != NULL) { 110 dlg_auto_size(title, prompt, &height, &width, 5, 111 MIN(MAX(dlg_count_columns(init) + 7, 26), 112 SCOLS - (dialog_vars.begin_set ? 113 dialog_vars.begin_x : 0))); 114 chr_offset = (int) strlen(init); 115 } else { 116 dlg_auto_size(title, prompt, &height, &width, 5, 26); 117 } 118 dlg_button_layout(buttons, &width); 119 dlg_print_size(height, width); 120 dlg_ctl_size(height, width); 121 122 xorg = dlg_box_x_ordinate(width); 123 yorg = dlg_box_y_ordinate(height); 124 125 dialog = dlg_new_window(height, width, yorg, xorg); 126 dlg_register_window(dialog, "inputbox", binding); 127 dlg_register_buttons(dialog, "inputbox", buttons); 128 129 dlg_mouse_setbase(xorg, yorg); 130 131 dlg_draw_box2(dialog, 0, 0, height, width, dialog_attr, border_attr, border2_attr); 132 dlg_draw_bottom_box2(dialog, border_attr, border2_attr, dialog_attr); 133 dlg_draw_title(dialog, title); 134 135 dlg_attrset(dialog, dialog_attr); 136 dlg_draw_helpline(dialog, FALSE); 137 dlg_print_autowrap(dialog, prompt, height, width); 138 139 /* Draw the input field box */ 140 box_width = width - 6; 141 getyx(dialog, y, x); 142 (void) x; 143 box_y = y + 2; 144 box_x = (width - box_width) / 2; 145 dlg_mouse_mkregion(y + 1, box_x - 1, 3, box_width + 2, 'i'); 146 dlg_draw_box(dialog, y + 1, box_x - 1, 3, box_width + 2, 147 border_attr, border2_attr); 148 149 /* Make a window for the input-field, to associate bindings */ 150 editor = dlg_sub_window(dialog, 1, box_width, yorg + box_y, xorg + box_x); 151 dlg_register_window(editor, "inputbox2", binding2); 152 153 if (*input != '\0') { 154 dlg_show_string(editor, input, chr_offset, inputbox_attr, 155 0, 0, box_width, (bool) (password != 0), first); 156 wsyncup(editor); 157 wcursyncup(editor); 158 } 159 while (result == DLG_EXIT_UNKNOWN) { 160 int edit = 0; 161 162 /* 163 * The last field drawn determines where the cursor is shown: 164 */ 165 if (show_buttons) { 166 show_buttons = FALSE; 167 col_offset = dlg_edit_offset(input, chr_offset, box_width); 168 (void) wmove(dialog, box_y, box_x + col_offset); 169 dlg_draw_buttons(dialog, height - 2, 0, buttons, state, FALSE, width); 170 } 171 172 if (!first) { 173 if (*input != '\0' && !edited) { 174 dlg_show_string(editor, input, chr_offset, inputbox_attr, 175 0, 0, box_width, (bool) (password != 0), first); 176 wmove(editor, 0, chr_offset); 177 wsyncup(editor); 178 wcursyncup(editor); 179 } 180 key = dlg_mouse_wgetch((state == sTEXT) ? editor : dialog, &fkey); 181 if (dlg_result_key(key, fkey, &result)) 182 break; 183 } 184 185 /* 186 * Handle mouse clicks first, since we want to know if this is a button, 187 * or something that dlg_edit_string() should handle. 188 */ 189 if (fkey 190 && is_DLGK_MOUSE(key) 191 && (code = dlg_ok_buttoncode(key - M_EVENT)) >= 0) { 192 result = code; 193 continue; 194 } 195 196 if (state == sTEXT) { /* Input box selected */ 197 edit = dlg_edit_string(input, &chr_offset, key, fkey, first); 198 199 if (edit) { 200 dlg_show_string(editor, input, chr_offset, inputbox_attr, 201 0, 0, box_width, (bool) (password != 0), first); 202 wsyncup(editor); 203 wcursyncup(editor); 204 first = FALSE; 205 edited = TRUE; 206 continue; 207 } else if (first) { 208 first = FALSE; 209 continue; 210 } 211 } 212 213 /* handle non-functionkeys */ 214 if (!fkey && (code = dlg_char_to_button(key, buttons)) >= 0) { 215 dlg_del_window(dialog); 216 result = dlg_ok_buttoncode(code); 217 continue; 218 } 219 220 /* handle functionkeys */ 221 if (fkey) { 222 switch (key) { 223 case DLGK_MOUSE('i'): /* mouse enter events */ 224 state = 0; 225 /* FALLTHRU */ 226 case DLGK_FIELD_PREV: 227 show_buttons = TRUE; 228 state = dlg_prev_ok_buttonindex(state, sTEXT); 229 break; 230 case DLGK_FIELD_NEXT: 231 show_buttons = TRUE; 232 state = dlg_next_ok_buttonindex(state, sTEXT); 233 break; 234 case DLGK_TOGGLE: 235 case DLGK_ENTER: 236 dlg_del_window(dialog); 237 result = (state >= 0) ? dlg_enter_buttoncode(state) : DLG_EXIT_OK; 238 break; 239#ifdef KEY_RESIZE 240 case KEY_RESIZE: 241 dlg_will_resize(dialog); 242 /* reset data */ 243 height = old_height; 244 width = old_width; 245 /* repaint */ 246 dlg_clear(); 247 dlg_del_window(dialog); 248 refresh(); 249 dlg_mouse_free_regions(); 250 goto retry; 251#endif 252 default: 253 beep(); 254 break; 255 } 256 } else { 257 beep(); 258 } 259 } 260 261 dlg_unregister_window(editor); 262 dlg_del_window(dialog); 263 dlg_mouse_free_regions(); 264 free(prompt); 265 return result; 266} 267