private void on_apply(snoop_around_form self, List <string> selection, bool used)
{
var new_sel = new HashSet <string>(selection);
var info = this.info(self);
bool same_snoop = info.snoop_selection.SetEquals(new_sel);
if (same_snoop && info.selection_used == used)
{
return; // nothing changed
}
if (same_snoop && selection.Count == 0)
{
// nothing is selected, it doesn't matter
return;
}
lock (this) {
info.selection_used = used;
info.snoop_selection = new_sel;
if (!same_snoop)
{
bool has_sel = new_sel.Count > 0;
if (info.apply_index >= 0)
{
// all snoops with a higher index, are cleared (the selection changed, thus, they need to be re-done)
foreach (var snoop in snoops_.Values)
{
if (snoop.apply_index > info.apply_index)
{
snoop.clear();
}
}
}
if (!has_sel)
{
// user cleared this snoop
info.clear();
}
if (has_sel && info.apply_index < 0)
{
// need to find out the apply_index
int max_apply = snoops_.Values.Max(x => x.apply_index);
info.apply_index = max_apply + 1;
}
// all snoops that did not have a selection yet, they need re-doing
foreach (var snoop in snoops_.Values)
{
if (snoop.apply_index < 0)
{
snoop.clear();
}
}
}
}
view_.reapply_quick_filter();
}
