/* * inputbox.c -- implements the input box * * AUTHOR: Savio Lam (lam836@cs.cuhk.hk) * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License * as published by the Free Software Foundation; either version 2 * of the License, or (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ #include "dialog.h" /* * Display a dialog box for inputing a string */ int dialog_inputbox(char *title, char *prompt, int height, int width, char *init) { int i, x, y, box_y, box_x, box_width, input_x = 0, scroll = 0, key = 0, button = -1; unsigned char instr[MAX_LEN+1]; WINDOW *dialog; /* center dialog box on screen */ x = (COLS - width)/2; y = (LINES - height)/2; #ifdef HAVE_NCURSES if (use_shadow) draw_shadow(stdscr, y, x, height, width); #endif dialog = newwin(height, width, y, x); keypad(dialog, TRUE); draw_box(dialog, 0, 0, height, width, dialog_attr, border_attr); wattrset(dialog, border_attr); wmove(dialog, height-3, 0); waddch(dialog, ACS_LTEE); for (i = 0; i < width-2; i++) waddch(dialog, ACS_HLINE); wattrset(dialog, dialog_attr); waddch(dialog, ACS_RTEE); wmove(dialog, height-2, 1); for (i = 0; i < width-2; i++) waddch(dialog, ' '); if (title != NULL) { wattrset(dialog, title_attr); wmove(dialog, 0, (width - strlen(title))/2 - 1); waddch(dialog, ' '); waddstr(dialog, title); waddch(dialog, ' '); } wattrset(dialog, dialog_attr); print_autowrap(dialog, prompt, width, 1, 3); /* Draw the input field box */ box_width = width-6; getyx(dialog, y, x); box_y = y + 2; box_x = (width - box_width)/2; draw_box(dialog, y+1, box_x-1, 3, box_width+2, border_attr, dialog_attr); x = width/2-11; y = height-2; print_button(dialog, "Cancel", y, x+14, FALSE); print_button(dialog, " OK ", y, x, TRUE); /* Set up the initial value */ wmove(dialog, box_y, box_x); wattrset(dialog, inputbox_attr); if (!init) { instr[0] = '\0'; } else { strcpy((char*)instr, init); } input_x = strlen((char*)instr); if (input_x >= box_width) { scroll = input_x - box_width + 1; input_x = box_width - 1; for (i = 0; i < box_width-1; i++) { waddch(dialog, instr[scroll+i]); } } else { waddstr(dialog, (char*)instr); } wmove(dialog, box_y, box_x + input_x); wrefresh(dialog); while (key != ESC) { key = wgetch(dialog); if (button == -1) { /* Input box selected */ switch (key) { case TAB: case KEY_UP: case KEY_DOWN: break; case KEY_LEFT: continue; case KEY_RIGHT: continue; case KEY_BACKSPACE: if (input_x || scroll) { wattrset(dialog, inputbox_attr); if (!input_x) { scroll = scroll < box_width-1 ? 0 : scroll-(box_width-1); wmove(dialog, box_y, box_x); for (i = 0; i < box_width; i++) waddch(dialog, instr[scroll+input_x+i] ? instr[scroll+input_x+i] : ' '); input_x = strlen((char*)instr) - scroll; } else input_x--; instr[scroll+input_x] = '\0'; wmove(dialog, box_y, input_x + box_x); waddch(dialog, ' '); wmove(dialog, box_y, input_x + box_x); wrefresh(dialog); } continue; default: if (key < 0x100 && isprint(key)) { if (scroll+input_x < MAX_LEN) { wattrset(dialog, inputbox_attr); instr[scroll+input_x] = key; instr[scroll+input_x+1] = '\0'; if (input_x == box_width-1) { scroll++; wmove(dialog, box_y, box_x); for (i = 0; i < box_width-1; i++) waddch(dialog, instr[scroll+i]); } else { wmove(dialog, box_y, input_x++ + box_x); waddch(dialog, key); } wrefresh(dialog); } else flash(); /* Alarm user about overflow */ continue; } } } switch (key) { case 'O': case 'o': delwin(dialog); fprintf(stderr, (char*)instr); return 0; case 'C': case 'c': delwin(dialog); return 1; case KEY_UP: case KEY_LEFT: switch (button) { case -1: button = 1; /* Indicates "Cancel" button is selected */ print_button(dialog, " OK ", y, x, FALSE); print_button(dialog, "Cancel", y, x+14, TRUE); wrefresh(dialog); break; case 0: button = -1; /* Indicates input box is selected */ print_button(dialog, "Cancel", y, x+14, FALSE); print_button(dialog, " OK ", y, x, TRUE); wmove(dialog, box_y, box_x + input_x); wrefresh(dialog); break; case 1: button = 0; /* Indicates "OK" button is selected */ print_button(dialog, "Cancel", y, x+14, FALSE); print_button(dialog, " OK ", y, x, TRUE); wrefresh(dialog); break; } break; case TAB: case KEY_DOWN: case KEY_RIGHT: switch (button) { case -1: button = 0; /* Indicates "OK" button is selected */ print_button(dialog, "Cancel", y, x+14, FALSE); print_button(dialog, " OK ", y, x, TRUE); wrefresh(dialog); break; case 0: button = 1; /* Indicates "Cancel" button is selected */ print_button(dialog, " OK ", y, x, FALSE); print_button(dialog, "Cancel", y, x+14, TRUE); wrefresh(dialog); break; case 1: button = -1; /* Indicates input box is selected */ print_button(dialog, "Cancel", y, x+14, FALSE); print_button(dialog, " OK ", y, x, TRUE); wmove(dialog, box_y, box_x + input_x); wrefresh(dialog); break; } break; case ' ': case '\n': delwin(dialog); fprintf(stderr, (char*)instr); return (button == -1 ? 0 : button); case ESC: break; } } delwin(dialog); return -1; /* ESC pressed */ } /* End of dialog_inputbox() */