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Implement insert-mode line editing

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This commit is contained in:
Andrey A. Chernov 1994-10-10 19:49:22 +00:00
parent f9b94d9135
commit 7f6f3361ff
1 changed files with 23 additions and 16 deletions
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39
gnu/usr.bin/dialog/inputbox.c
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@ -95,17 +95,15 @@ int dialog_inputbox(unsigned char *title, unsigned char *prompt, int height, int
if (input_x || scroll) {
wattrset(dialog, inputbox_attr);
if (!input_x) {
int oldscroll = scroll;
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;
input_x = oldscroll - 1 - scroll;
}
else
input_x--;
i = strlen(instr);
while (i-1 >= scroll+input_x && instr[i-1] == ' ')
instr[--i] = '\0';
wmove(dialog, box_y, input_x + box_x);
wrefresh(dialog);
}
@ -118,8 +116,9 @@ int dialog_inputbox(unsigned char *title, unsigned char *prompt, int height, int
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]);
for (i = 0; i < box_width; i++)
waddch(dialog, instr[scroll+i] ? instr[scroll+i] : ' ');
wmove(dialog, box_y, box_x + box_width - 1);
}
else {
wmove(dialog, box_y, input_x + box_x);
@ -131,33 +130,37 @@ int dialog_inputbox(unsigned char *title, unsigned char *prompt, int height, int
flash(); /* Alarm user about overflow */
continue;
case KEY_BACKSPACE:
case KEY_DC:
if (input_x || scroll) {
i = strlen(instr);
memmove(instr+scroll+input_x-1, instr+scroll+input_x, i-scroll+input_x+1);
wattrset(dialog, inputbox_attr);
if (!input_x) {
int oldscroll = scroll;
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;
input_x = oldscroll - 1 - scroll;
}
else
input_x--;
instr[scroll+input_x] = ' ';
wmove(dialog, box_y, input_x + box_x);
waddch(dialog, ' ');
for (i = input_x; i < box_width; i++)
waddch(dialog, instr[scroll+i] ? instr[scroll+i] : ' ');
wmove(dialog, box_y, input_x + box_x);
wrefresh(dialog);
i = strlen(instr);
while (i-1 >= scroll+input_x && instr[i-1] == ' ')
instr[--i] = '\0';
}
continue;
default:
if (key < 0x100 && isprint(key)) {
if (scroll+input_x < MAX_LEN) {
for (i = strlen(instr) - 1; i >= scroll + input_x && instr[i] == ' '; i--)
instr[i] = '\0';
i++;
if (i < MAX_LEN) {
memmove(instr+scroll+input_x+1, instr+scroll+input_x, i-scroll+input_x);
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);
@ -165,8 +168,10 @@ int dialog_inputbox(unsigned char *title, unsigned char *prompt, int height, int
waddch(dialog, instr[scroll+i]);
}
else {
wmove(dialog, box_y, input_x++ + box_x);
waddch(dialog, key);
wmove(dialog, box_y, input_x + box_x);
for (i = input_x; i < box_width && instr[scroll+i]; i++)
waddch(dialog, instr[scroll+i]);
wmove(dialog, box_y, ++input_x + box_x);
}
wrefresh(dialog);
} else
@ -239,6 +244,8 @@ int dialog_inputbox(unsigned char *title, unsigned char *prompt, int height, int
case ' ':
case '\n':
delwin(dialog);
for (i = strlen(instr) - 1; i >= scroll + input_x && instr[i] == ' '; i--)
instr[i] = '\0';
fprintf(stderr, instr);
return (button == -1 ? 0 : button);
case ESC: