menuconfig:inputbox: support navigate input position
This patch add support navigate input position *inside* the input
field with LEFT/RIGHT, so it is possible to modify the text in place.
Signed-off-by: Wang YanQing <udknight@gmail.com>
Tested-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
Signed-off-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
diff --git a/scripts/kconfig/lxdialog/inputbox.c b/scripts/kconfig/lxdialog/inputbox.c
index dd8e587..21404a0 100644
--- a/scripts/kconfig/lxdialog/inputbox.c
+++ b/scripts/kconfig/lxdialog/inputbox.c
@@ -45,7 +45,8 @@
const char *init)
{
int i, x, y, box_y, box_x, box_width;
- int input_x = 0, scroll = 0, key = 0, button = -1;
+ int input_x = 0, key = 0, button = -1;
+ int show_x, len, pos;
char *instr = dialog_input_result;
WINDOW *dialog;
@@ -97,14 +98,17 @@
wmove(dialog, box_y, box_x);
wattrset(dialog, dlg.inputbox.atr);
- input_x = strlen(instr);
+ len = strlen(instr);
+ pos = len;
- if (input_x >= box_width) {
- scroll = input_x - box_width + 1;
+ if (len >= box_width) {
+ show_x = len - box_width + 1;
input_x = box_width - 1;
for (i = 0; i < box_width - 1; i++)
- waddch(dialog, instr[scroll + i]);
+ waddch(dialog, instr[show_x + i]);
} else {
+ show_x = 0;
+ input_x = len;
waddstr(dialog, instr);
}
@@ -121,45 +125,104 @@
case KEY_UP:
case KEY_DOWN:
break;
- case KEY_LEFT:
- continue;
- case KEY_RIGHT:
- continue;
case KEY_BACKSPACE:
case 127:
- if (input_x || scroll) {
+ if (pos) {
wattrset(dialog, dlg.inputbox.atr);
- 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;
+ if (input_x == 0) {
+ show_x--;
} else
input_x--;
- instr[scroll + input_x] = '\0';
- mvwaddch(dialog, box_y, input_x + box_x, ' ');
+
+ if (pos < len) {
+ for (i = pos - 1; i < len; i++) {
+ instr[i] = instr[i+1];
+ }
+ }
+
+ pos--;
+ len--;
+ instr[len] = '\0';
+ wmove(dialog, box_y, box_x);
+ for (i = 0; i < box_width; i++) {
+ if (!instr[show_x + i]) {
+ waddch(dialog, ' ');
+ break;
+ }
+ waddch(dialog, instr[show_x + i]);
+ }
wmove(dialog, box_y, input_x + box_x);
wrefresh(dialog);
}
continue;
+ case KEY_LEFT:
+ if (pos > 0) {
+ if (input_x > 0) {
+ wmove(dialog, box_y, --input_x + box_x);
+ } else if (input_x == 0) {
+ show_x--;
+ wmove(dialog, box_y, box_x);
+ for (i = 0; i < box_width; i++) {
+ if (!instr[show_x + i]) {
+ waddch(dialog, ' ');
+ break;
+ }
+ waddch(dialog, instr[show_x + i]);
+ }
+ wmove(dialog, box_y, box_x);
+ }
+ pos--;
+ }
+ continue;
+ case KEY_RIGHT:
+ if (pos < len) {
+ if (input_x < box_width - 1) {
+ wmove(dialog, box_y, ++input_x + box_x);
+ } else if (input_x == box_width - 1) {
+ show_x++;
+ wmove(dialog, box_y, box_x);
+ for (i = 0; i < box_width; i++) {
+ if (!instr[show_x + i]) {
+ waddch(dialog, ' ');
+ break;
+ }
+ waddch(dialog, instr[show_x + i]);
+ }
+ wmove(dialog, box_y, input_x + box_x);
+ }
+ pos++;
+ }
+ continue;
default:
if (key < 0x100 && isprint(key)) {
- if (scroll + input_x < MAX_LEN) {
+ if (len < MAX_LEN) {
wattrset(dialog, dlg.inputbox.atr);
- 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]);
+ if (pos < len) {
+ for (i = len; i > pos; i--)
+ instr[i] = instr[i-1];
+ instr[pos] = key;
} else {
- wmove(dialog, box_y, input_x++ + box_x);
- waddch(dialog, key);
+ instr[len] = key;
}
+ pos++;
+ len++;
+ instr[len] = '\0';
+
+ if (input_x == box_width - 1) {
+ show_x++;
+ } else {
+ input_x++;
+ }
+
+ wmove(dialog, box_y, box_x);
+ for (i = 0; i < box_width; i++) {
+ if (!instr[show_x + i]) {
+ waddch(dialog, ' ');
+ break;
+ }
+ waddch(dialog, instr[show_x + i]);
+ }
+ wmove(dialog, box_y, input_x + box_x);
wrefresh(dialog);
} else
flash(); /* Alarm user about overflow */