private void HandleFieldChanged(object o, EventArgs args)
{
if (field_chooser.Active < 0 || field_chooser.Active >= sorted_fields.Length)
{
return;
}
QueryField field = sorted_fields [field_chooser.Active];
// Leave everything as is unless the new field is a different type
if (this.field != null && (field.ValueTypes.Length == 1 && this.field.ValueTypes.Length == 1 && field.ValueTypes[0] == this.field.ValueTypes[0]))
{
this.field = field;
return;
}
op_chooser.Changed -= HandleOperatorChanged;
this.field = field;
// Remove old type's operators
while (op_chooser.Model.IterNChildren() > 0)
{
op_chooser.RemoveText(0);
}
// Add new field's operators
int val_count = 0;
value_entries.Clear();
operators.Clear();
operator_entries.Clear();
foreach (QueryValue val in this.field.CreateQueryValues())
{
QueryValueEntry entry = QueryValueEntry.Create(val);
value_entries.Add(entry);
if (val_count++ > 0)
{
op_chooser.AppendText(String.Empty);
operators.Add(null);
}
foreach (Operator op in val.OperatorSet)
{
op_chooser.AppendText(op.Label);
operators.Add(op);
operator_entries [op] = entry;
}
}
SetValueEntry(value_entries[0]);
// TODO: If we have the same operator that was previously selected, select it
op_chooser.Changed += HandleOperatorChanged;
op_chooser.Active = 0;
}
private void SetValueEntry(QueryValueEntry entry)
{
if (first)
{
first = false;
}
else
{
value_box.Remove(value_box.Children [0]);
}
current_value_entry = entry;
value_box.PackStart(current_value_entry, false, true, 0);
current_value_entry.ShowAll();
}
public static QueryValueEntry Create(QueryValue qv)
{
Type qv_type = qv.GetType();
Type entry_type = null;
foreach (KeyValuePair <Type, Type> pair in types)
{
if (pair.Value == qv_type)
{
entry_type = pair.Key;
break;
}
}
// If we don't have an entry type that's exactly for our type, take a more generic one
if (entry_type == null)
{
foreach (KeyValuePair <Type, Type> pair in types)
{
if (qv_type.IsSubclassOf(pair.Value))
{
entry_type = pair.Key;
break;
}
}
}
if (entry_type != null)
{
QueryValueEntry entry = Activator.CreateInstance(entry_type) as QueryValueEntry;
entry.QueryValue = qv;
return(entry);
}
return(null);
}
private void SetValueEntry (QueryValueEntry entry)
{
if (first) {
first = false;
} else {
value_box.Remove (value_box.Children [0]);
}
current_value_entry = entry;
value_box.PackStart (current_value_entry, false, true, 0);
current_value_entry.ShowAll ();
}
public static Type GetValueType (QueryValueEntry entry)
{
return types [entry.GetType ()];
}
public static Type GetValueType(QueryValueEntry entry)
{
return(types [entry.GetType()]);
}