OpenTween.FilterDialog.ButtonCancel_Click C# (CSharp) Method

        private void ButtonCancel_Click(object sender, EventArgs e)
        {
            ListTabs.Enabled = true;
            GroupTab.Enabled = true;
            ListFilters.Enabled = true;
            ListFilters.Focus();
            if (ListFilters.SelectedIndex != -1)
            {
                ShowDetail();
            }
            EditFilterGroup.Enabled = false;
            ButtonNew.Enabled = true;
            if (ListFilters.SelectedIndex > -1)
            {
                ButtonEdit.Enabled = true;
                ButtonDelete.Enabled = true;
                ButtonRuleUp.Enabled = true;
                ButtonRuleDown.Enabled = true;
                ButtonRuleCopy.Enabled = true;
                ButtonRuleMove.Enabled = true;
                buttonRuleToggleEnabled.Enabled = true;
            }
            else
            {
                ButtonEdit.Enabled = false;
                ButtonDelete.Enabled = false;
                ButtonRuleUp.Enabled = false;
                ButtonRuleDown.Enabled = false;
                ButtonRuleCopy.Enabled = false;
                ButtonRuleMove.Enabled = false;
                buttonRuleToggleEnabled.Enabled = false;
            }
            ButtonClose.Enabled = true;
            if (_directAdd)
            {
                this.Close();
            }
        }