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#include <stdlib.h>
#include <string.h>
#include "vt.h"
#include "misc.h"
#include "xio.h"
#include "edline.h"
static void
do_exit(struct edline *el, u8 *buf)
{
xio_set_cursor(el->xw, 999, 999);
xio_set_handler(el->xw, el->old_handler, el->old_data);
el->exit_func(el->exit_data, buf);
free(el);
}
static void
redraw(struct edline *el)
{
u8 buf[40];
u8 *p;
int l;
p = el->buf;
l = el->len;
if (l > 39 - el->plen)
{
l = 39 - el->plen;
p = el->buf + el->len - l;
}
memset(buf, ' ', sizeof(buf));
memcpy(buf, el->prompt, el->plen);
memcpy(buf + el->plen, p, l);
xio_set_cursor(el->xw, el->plen + l, 24);
xio_put_line(el->xw, 24, buf);
}
static void
ev_handler(struct edline *el, struct vt_event *ev)
{
switch (ev->type)
{
case EV_KEY:
switch (ev->i1)
{
case '\e':
case '\3':
do_exit(el, 0);
return;
case '\r':
case '\n':
el->buf[el->len] = 0;
do_exit(el, el->buf);
return;
case KEY_INS:
xio_query_selection(el->xw);
return;
case KEY_LEFT:
case '\b':
if (el->len)
{
el->len--;
redraw(el);
}
else
do_exit(el, 0);
return;
case 0x20 ... 0x7e:
case 0xa0 ... 0xff:
if (el->len < (int)sizeof(el->buf)-1)
{
el->buf[el->len++] = ev->i1;
redraw(el);
return;
}
break;
}
xio_bell(el->xw);
return;
case EV_SELECTION:
{
u8 *p = ev->p1;
int n = ev->i1;
while (n-- && el->len < (int)sizeof(el->buf)-1)
{
if (*p >= 0x20 && *p <= 0x7e || *p >= 0xa0 && *p <= 0xff)
el->buf[el->len++] = *p;
p++;
}
redraw(el);
return;
}
case EV_MOUSE:
if (ev->i4 == 24)
{
if (ev->i1 == 2)
xio_query_selection(el->xw);
else
xio_bell(el->xw);
return;
}
break;
}
el->old_handler(el->old_data, ev);
}
struct edline *
edline_new(struct xio_win *xw, u8 *prompt, u8 *str, void *exit_func, void *data)
{
struct edline *el;
int plen, slen;
if ((plen = strlen(prompt)) > 20)
goto fail1;
if ((slen = strlen(str)) > (int)sizeof(el->buf) - 1)
goto fail1;
if (not(el = malloc(sizeof(*el))))
goto fail1;
el->xw = xw;
el->prompt = prompt;
el->exit_func = exit_func;
el->exit_data = data;
el->old_handler = xw->handler; //TODO: func to retrieve curr handler
el->old_data = xw->data;
xio_set_handler(el->xw, ev_handler, el);
el->plen = plen;
el->len = slen;
strcpy(el->buf, str);
redraw(el);
return el;
fail2:
free(el);
fail1:
return 0;
}
void
edline_abort(struct edline *el)
{
do_exit(el, 0);
}
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