static int
glw_nav_last(glw_t *parent)
{
glw_t *c = glw_last_widget(parent);
while(c != NULL) {
glw_t *to_focus = glw_get_focusable_child(c);
if(to_focus != NULL && to_focus->glw_flags2 & GLW2_NAV_FOCUSABLE) {
glw_focus_set(to_focus->glw_root, to_focus, GLW_FOCUS_SET_INTERACTIVE,
"NavLast");
return 1;
}
c = glw_prev_widget(c);
}
return 0;
}
void
glw_scroll_suggest_focus(glw_scroll_control_t *gsc, glw_t *w, glw_t *c)
{
if(!glw_is_focused(w)) {
w->glw_focused = c;
glw_signal0(w, GLW_SIGNAL_FOCUS_CHILD_INTERACTIVE, c);
gsc->scroll_to_me = c;
return;
}
if(gsc->suggested == w->glw_focused || gsc->suggest_cnt > 0) {
c = glw_focus_by_path(c);
if(c != NULL)
glw_focus_set(c->glw_root, c, GLW_FOCUS_SET_SUGGESTED, "Suggested");
gsc->suggest_cnt = 1;
}
gsc->suggested = c;
gsc->suggest_cnt++;
}
void
glw_scroll_handle_scroll(glw_scroll_control_t *gsc, glw_t *w, glw_scroll_t *gs)
{
int top = GLW_MAX(gs->value * (gsc->total_size - gsc->page_size
+ gsc->scroll_threshold_post), 0);
gsc->target_pos = top;
glw_schedule_refresh(w->glw_root, 0);
if(gsc->chase_focus == 0)
return;
glw_t *c = w->glw_class->gc_find_visible_child(w);
if(c == NULL)
return;
if(glw_is_focused(w)) {
glw_focus_set(w->glw_root, c, GLW_FOCUS_SET_SUGGESTED, "Scroll");
} else {
w->glw_focused = c;
glw_signal0(w, GLW_SIGNAL_FOCUS_CHILD_INTERACTIVE, c);
}
}
int
glw_navigate_step(glw_t *c, int count, int may_wrap)
{
glw_t *parent = c->glw_parent;
glw_t *to_focus = NULL;
int forward = 1;
if(count < 0) {
forward = 0;
count = -count;
}
while((c = glw_step_widget(c, forward)) != NULL) {
glw_t *tentative = glw_get_focusable_child(c);
if(tentative != NULL) {
if(!(tentative->glw_flags2 & GLW2_NAV_FOCUSABLE))
continue;
to_focus = tentative;
count--;
if(count == 0)
break;
}
}
if(to_focus != NULL) {
glw_focus_set(to_focus->glw_root, to_focus, GLW_FOCUS_SET_INTERACTIVE,
"NavStep");
return 1;
} else if(may_wrap) {
if(forward) {
return glw_nav_first(parent);
} else {
return glw_nav_last(parent);
}
}
return 0;
}
