/*
* Show/hide current help screen
*/
int u_help(BASE *base)
{
W *w = base->parent;
struct help *new_help;
if (w->huh && (new_help = find_context_help(w->huh)) != NULL) {
if (help_actual != new_help) {
if (w->t->wind != skiptop)
help_off(w->t);
help_actual = new_help; /* prepare context help */
}
}
if (w->t->wind == skiptop) {
return help_on(w->t); /* help screen is hidden, so show the actual one */
} else {
help_off(w->t); /* hide actual help screen */
return 0;
}
}
/*
* Show previous help screen (if it is possible)
*/
int u_help_prev(BASE *base)
{
W *w = base->parent;
if (help_actual && help_actual->prev) { /* is there any previous help screen? */
if (w->t->wind != skiptop)
help_off(w->t); /* if help screen was visible, then hide it */
help_actual = help_actual->prev; /* change to previous help screen */
return help_on(w->t); /* show actual help screen */
} else {
return -1;
}
}
/*
* Show next help screen (if it is possible)
*/
int u_help_next(BASE *base)
{
W *w = base->parent;
if (help_actual && help_actual->next) { /* is there any next help screen? */
if (w->t->wind != skiptop) {
help_off(w->t); /* if help screen was visible, then hide it */
}
help_actual = help_actual->next; /* change to next help screen */
return help_on(w->t); /* show actual help screen */
} else {
return -1;
}
}
