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289 lines
6.4 KiB
289 lines
6.4 KiB
// SPDX-License-Identifier: GPL-2.0+ |
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/* |
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* inputbox.c -- implements the input box |
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* |
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* ORIGINAL AUTHOR: Savio Lam ([email protected]) |
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* MODIFIED FOR LINUX KERNEL CONFIG BY: William Roadcap ([email protected]) |
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*/ |
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#include "dialog.h" |
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char dialog_input_result[MAX_LEN + 1]; |
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/* |
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* Print the termination buttons |
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*/ |
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static void print_buttons(WINDOW * dialog, int height, int width, int selected) |
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{ |
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int x = width / 2 - 11; |
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int y = height - 2; |
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print_button(dialog, " Ok ", y, x, selected == 0); |
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print_button(dialog, " Help ", y, x + 14, selected == 1); |
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wmove(dialog, y, x + 1 + 14 * selected); |
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wrefresh(dialog); |
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} |
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/* |
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* Display a dialog box for inputing a string |
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*/ |
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int dialog_inputbox(const char *title, const char *prompt, int height, int width, |
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const char *init) |
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{ |
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int i, x, y, box_y, box_x, box_width; |
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int input_x = 0, key = 0, button = -1; |
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int show_x, len, pos; |
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char *instr = dialog_input_result; |
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WINDOW *dialog; |
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if (!init) |
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instr[0] = '\0'; |
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else |
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strcpy(instr, init); |
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do_resize: |
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if (getmaxy(stdscr) <= (height - INPUTBOX_HEIGTH_MIN)) |
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return -ERRDISPLAYTOOSMALL; |
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if (getmaxx(stdscr) <= (width - INPUTBOX_WIDTH_MIN)) |
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return -ERRDISPLAYTOOSMALL; |
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/* center dialog box on screen */ |
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x = (getmaxx(stdscr) - width) / 2; |
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y = (getmaxy(stdscr) - height) / 2; |
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draw_shadow(stdscr, y, x, height, width); |
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dialog = newwin(height, width, y, x); |
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keypad(dialog, TRUE); |
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draw_box(dialog, 0, 0, height, width, |
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dlg.dialog.atr, dlg.border.atr); |
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wattrset(dialog, dlg.border.atr); |
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mvwaddch(dialog, height - 3, 0, ACS_LTEE); |
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for (i = 0; i < width - 2; i++) |
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waddch(dialog, ACS_HLINE); |
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wattrset(dialog, dlg.dialog.atr); |
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waddch(dialog, ACS_RTEE); |
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print_title(dialog, title, width); |
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wattrset(dialog, dlg.dialog.atr); |
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print_autowrap(dialog, prompt, width - 2, 1, 3); |
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/* Draw the input field box */ |
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box_width = width - 6; |
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getyx(dialog, y, x); |
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box_y = y + 2; |
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box_x = (width - box_width) / 2; |
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draw_box(dialog, y + 1, box_x - 1, 3, box_width + 2, |
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dlg.dialog.atr, dlg.border.atr); |
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print_buttons(dialog, height, width, 0); |
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/* Set up the initial value */ |
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wmove(dialog, box_y, box_x); |
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wattrset(dialog, dlg.inputbox.atr); |
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len = strlen(instr); |
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pos = len; |
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if (len >= box_width) { |
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show_x = len - box_width + 1; |
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input_x = box_width - 1; |
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for (i = 0; i < box_width - 1; i++) |
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waddch(dialog, instr[show_x + i]); |
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} else { |
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show_x = 0; |
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input_x = len; |
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waddstr(dialog, instr); |
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} |
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wmove(dialog, box_y, box_x + input_x); |
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wrefresh(dialog); |
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while (key != KEY_ESC) { |
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key = wgetch(dialog); |
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if (button == -1) { /* Input box selected */ |
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switch (key) { |
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case TAB: |
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case KEY_UP: |
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case KEY_DOWN: |
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break; |
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case KEY_BACKSPACE: |
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case 8: /* ^H */ |
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case 127: /* ^? */ |
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if (pos) { |
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wattrset(dialog, dlg.inputbox.atr); |
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if (input_x == 0) { |
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show_x--; |
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} else |
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input_x--; |
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if (pos < len) { |
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for (i = pos - 1; i < len; i++) { |
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instr[i] = instr[i+1]; |
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} |
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} |
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pos--; |
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len--; |
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instr[len] = '\0'; |
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wmove(dialog, box_y, box_x); |
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for (i = 0; i < box_width; i++) { |
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if (!instr[show_x + i]) { |
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waddch(dialog, ' '); |
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break; |
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} |
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waddch(dialog, instr[show_x + i]); |
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} |
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wmove(dialog, box_y, input_x + box_x); |
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wrefresh(dialog); |
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} |
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continue; |
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case KEY_LEFT: |
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if (pos > 0) { |
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if (input_x > 0) { |
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wmove(dialog, box_y, --input_x + box_x); |
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} else if (input_x == 0) { |
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show_x--; |
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wmove(dialog, box_y, box_x); |
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for (i = 0; i < box_width; i++) { |
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if (!instr[show_x + i]) { |
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waddch(dialog, ' '); |
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break; |
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} |
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waddch(dialog, instr[show_x + i]); |
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} |
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wmove(dialog, box_y, box_x); |
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} |
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pos--; |
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} |
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continue; |
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case KEY_RIGHT: |
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if (pos < len) { |
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if (input_x < box_width - 1) { |
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wmove(dialog, box_y, ++input_x + box_x); |
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} else if (input_x == box_width - 1) { |
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show_x++; |
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wmove(dialog, box_y, box_x); |
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for (i = 0; i < box_width; i++) { |
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if (!instr[show_x + i]) { |
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waddch(dialog, ' '); |
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break; |
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} |
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waddch(dialog, instr[show_x + i]); |
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} |
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wmove(dialog, box_y, input_x + box_x); |
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} |
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pos++; |
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} |
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continue; |
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default: |
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if (key < 0x100 && isprint(key)) { |
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if (len < MAX_LEN) { |
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wattrset(dialog, dlg.inputbox.atr); |
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if (pos < len) { |
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for (i = len; i > pos; i--) |
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instr[i] = instr[i-1]; |
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instr[pos] = key; |
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} else { |
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instr[len] = key; |
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} |
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pos++; |
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len++; |
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instr[len] = '\0'; |
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if (input_x == box_width - 1) { |
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show_x++; |
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} else { |
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input_x++; |
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} |
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wmove(dialog, box_y, box_x); |
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for (i = 0; i < box_width; i++) { |
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if (!instr[show_x + i]) { |
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waddch(dialog, ' '); |
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break; |
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} |
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waddch(dialog, instr[show_x + i]); |
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} |
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wmove(dialog, box_y, input_x + box_x); |
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wrefresh(dialog); |
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} else |
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flash(); /* Alarm user about overflow */ |
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continue; |
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} |
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} |
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} |
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switch (key) { |
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case 'O': |
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case 'o': |
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delwin(dialog); |
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return 0; |
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case 'H': |
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case 'h': |
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delwin(dialog); |
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return 1; |
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case KEY_UP: |
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case KEY_LEFT: |
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switch (button) { |
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case -1: |
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button = 1; /* Indicates "Help" button is selected */ |
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print_buttons(dialog, height, width, 1); |
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break; |
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case 0: |
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button = -1; /* Indicates input box is selected */ |
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print_buttons(dialog, height, width, 0); |
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wmove(dialog, box_y, box_x + input_x); |
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wrefresh(dialog); |
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break; |
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case 1: |
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button = 0; /* Indicates "OK" button is selected */ |
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print_buttons(dialog, height, width, 0); |
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break; |
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} |
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break; |
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case TAB: |
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case KEY_DOWN: |
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case KEY_RIGHT: |
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switch (button) { |
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case -1: |
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button = 0; /* Indicates "OK" button is selected */ |
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print_buttons(dialog, height, width, 0); |
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break; |
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case 0: |
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button = 1; /* Indicates "Help" button is selected */ |
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print_buttons(dialog, height, width, 1); |
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break; |
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case 1: |
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button = -1; /* Indicates input box is selected */ |
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print_buttons(dialog, height, width, 0); |
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wmove(dialog, box_y, box_x + input_x); |
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wrefresh(dialog); |
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break; |
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} |
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break; |
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case ' ': |
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case '\n': |
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delwin(dialog); |
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return (button == -1 ? 0 : button); |
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case 'X': |
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case 'x': |
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key = KEY_ESC; |
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break; |
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case KEY_ESC: |
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key = on_key_esc(dialog); |
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break; |
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case KEY_RESIZE: |
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delwin(dialog); |
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on_key_resize(); |
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goto do_resize; |
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} |
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} |
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delwin(dialog); |
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return KEY_ESC; /* ESC pressed */ |
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}
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