private void on_snoop(snoop_around_form self, ref bool keep_running)
{
var info = this.info(self);
if (info.snoop_selection.Count > 0)
{
// in this case, user selected at least something,
// and then applied the selection - thus, no re-snooping
self.reuse_last_values();
return;
}
// we cannot be visible if users doesn't have any rows
int sel = view_.sel_row_idx;
if (sel <= 0)
{
sel = 0;
}
if (info.snoop_sel >= 0)
{
if (Math.Abs(info.snoop_sel - sel) <= app.inst.reuse_snoop_surrounding)
{
// we already snooped near by, reuse that
self.reuse_last_values();
return;
}
}
// here, I know for sure I need to (re)snoop
int all = view_.item_count;
bool snoop_all = all <= app.inst.snoop_all_if_entries_less_than;
int min = 0, max = all;
if (!snoop_all)
{
var surrounding = util.surrounding(sel, app.inst.snoop_surrounding_entries, 0, all);
min = surrounding.Item1;
max = surrounding.Item2;
}
var type = info_key(self);
int snoop_idx = 0;
Dictionary <string, int> values = new Dictionary <string, int>();
// update
int snoop_update_ui_step = (max - min) / app.inst.snoop_update_ui_times;
for (int idx = min; idx < max; ++idx)
{
var i = view_.item_at(idx) as filter.match;
var cur_value = i.line.part(type);
if (!values.ContainsKey(cur_value))
{
values.Add(cur_value, 0);
}
++values[cur_value];
if (++snoop_idx % snoop_update_ui_step == 0)
{
if (keep_running)
{
// ... set to a copy, since we're modifying this one
self.set_values(values.ToDictionary(x => x.Key, x => x.Value), false, false);
}
else
{
break;
}
}
}
if (keep_running)
{
self.set_values(values, true, snoop_all);
info.snoop_sel = sel;
}
}
