/* * inputbox.c -- implements the input box * * ORIGINAL AUTHOR: Savio Lam (lam836@cs.cuhk.hk) * MODIFIED FOR LINUX KERNEL CONFIG BY: William Roadcap (roadcap@cfw.com) * * 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" unsigned char dialog_input_result[MAX_LEN + 1]; /* * Print the termination buttons */ static void print_buttons(WINDOW *dialog, int height, int width, int selected) { int x = width / 2 - 11; int y = height - 2; print_button (dialog, " Ok ", y, x, selected==0); print_button (dialog, " Help ", y, x + 14, selected==1); wmove(dialog, y, x+1+14*selected); wrefresh(dialog); } /* * Display a dialog box for inputing a string */ int dialog_inputbox (const char *title, const char *prompt, int height, int width, const char *init) { int i, x, y, box_y, box_x, box_width; int input_x = 0, scroll = 0, key = 0, button = -1; unsigned char *instr = dialog_input_result; WINDOW *dialog; /* center dialog box on screen */ x = (COLS - width) / 2; y = (LINES - height) / 2; draw_shadow (stdscr, y, x, height, width); dialog = newwin (height, width, y, x); keypad (dialog, TRUE); draw_box (dialog, 0, 0, height, width, dialog_attr, border_attr); wattrset (dialog, border_attr); mvwaddch (dialog, height-3, 0, ACS_LTEE); for (i = 0; i < width - 2; i++) waddch (dialog, ACS_HLINE); wattrset (dialog, dialog_attr); waddch (dialog, ACS_RTEE); if (title != NULL) { wattrset (dialog, title_attr); mvwaddch (dialog, 0, (width - strlen(title))/2 - 1, ' '); waddstr (dialog, (char *)title); waddch (dialog, ' '); } wattrset (dialog, dialog_attr); print_autowrap (dialog, prompt, width - 2, 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); print_buttons(dialog, height, width, 0); /* Set up the initial value */ wmove (dialog, box_y, box_x); wattrset (dialog, inputbox_attr); if (!init) instr[0] = '\0'; else strcpy (instr, init); input_x = strlen (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, 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: case 127: 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 (instr) - scroll; } else input_x--; instr[scroll + input_x] = '\0'; mvwaddch (dialog, box_y, input_x + box_x, ' '); 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); return 0; case 'H': case 'h': delwin (dialog); return 1; case KEY_UP: case KEY_LEFT: switch (button) { case -1: button = 1; /* Indicates "Cancel" button is selected */ print_buttons(dialog, height, width, 1); break; case 0: button = -1; /* Indicates input box is selected */ print_buttons(dialog, height, width, 0); wmove (dialog, box_y, box_x + input_x); wrefresh (dialog); break; case 1: button = 0; /* Indicates "OK" button is selected */ print_buttons(dialog, height, width, 0); break; } break; case TAB: case KEY_DOWN: case KEY_RIGHT: switch (button) { case -1: button = 0; /* Indicates "OK" button is selected */ print_buttons(dialog, height, width, 0); break; case 0: button = 1; /* Indicates "Cancel" button is selected */ print_buttons(dialog, height, width, 1); break; case 1: button = -1; /* Indicates input box is selected */ print_buttons(dialog, height, width, 0); wmove (dialog, box_y, box_x + input_x); wrefresh (dialog); break; } break; case ' ': case '\n': delwin (dialog); return (button == -1 ? 0 : button); case 'X': case 'x': key = ESC; case ESC: break; } } delwin (dialog); return -1; /* ESC pressed */ }