nature_net.user_controls.custom_listbox_v2._list_PreviewTouchUp C# (CSharp) Метод

        private void _list_PreviewTouchUp(object sender, TouchEventArgs e)
        {
            if (test_thumb_feedback(e))
            {
                e.Handled = true;
                return;
            }
            //double dv = 0;
            //if (touch_points.Count > 0)
            //    dv = e.GetTouchPoint(this._list).Position.Y - touch_points[0].Position.Y;
            bool can_scroll = false;
            if (!touch_points.ContainsKey(e.TouchDevice.Id)) return;

            if (touch_points[e.TouchDevice.Id].is_tap)
            {

                //if (touch_points[e.TouchDevice.Id].points.Count < 2) return;
                //double dv = touch_points[e.TouchDevice.Id].points[touch_points[e.TouchDevice.Id].points.Count - 1].Position.Y - touch_points[e.TouchDevice.Id].points[0].Position.Y;
                //double dh = touch_points[e.TouchDevice.Id].points[touch_points[e.TouchDevice.Id].points.Count - 1].Position.X - touch_points[e.TouchDevice.Id].points[0].Position.X;
                //bool should_tap = true;
                //if (is_horizontal && dh > configurations.tap_error)
                //    should_tap = false;
                //if (!is_horizontal && dv > configurations.tap_error)
                //    should_tap = false;

                //if (should_tap)
                //{
                    //FrameworkElement findSource = e.OriginalSource as FrameworkElement;
                    //ListBoxItem element = null;
                    //while (element == null && findSource != null)
                    //    if ((element = findSource as ListBoxItem) == null)
                    //        findSource = VisualTreeHelper.GetParent(findSource) as FrameworkElement;
                    ////
                    if (configurations.manual_tap || selectable)
                    {
                        UIElement selected_item = null;
                        if (collection_list)
                            selected_item = HitTestOverItem(e, false, false, false, true);
                        else if (comment_list)
                            selected_item = HitTestOverItem(e, false, false, true, false);
                        else
                            selected_item = HitTestOverItem(e, false, true, false, false);
                        if (selected_item != null)
                        {
                            //_list.SelectedItem = element;
                            try
                            {
                                _list_select_item(selected_item, e);
                            }
                            catch (Exception e2) { log.WriteErrorLog(e2); }
                        }
                    }
                //}
            }
            else
                can_scroll = true;

            if (can_scroll)
            {
                //ScrollViewer scroll = configurations.GetDescendantByType(this._list, typeof(ScrollViewer)) as ScrollViewer;
                ////double dv = e.GetTouchPoint(this.contributions).Position.X - touch_points[touch_points.Count - 1].Position.X;
                //try
                //{
                //    //scroll.ScrollToHorizontalOffset(scroll.HorizontalOffset + (-2 * dv));
                //    scroll.ScrollToVerticalOffset(last_scroll_offset + (-1 * dv));
                //}
                //catch (Exception) { }
                //last_scroll_offset = scroll.VerticalOffset;
                if (collection_list)
                    log.WriteInteractionLog(24, this.content_name, e.TouchDevice);
                else if (comment_list)
                    log.WriteInteractionLog(25, this.content_name, e.TouchDevice);
                else
                    log.WriteInteractionLog(1, this.content_name, e.TouchDevice);
            }
            if (touch_points[e.TouchDevice.Id].initial_attended_item != null)
                attend_on_item(false, touch_points[e.TouchDevice.Id].initial_attended_item);
            touch_points[e.TouchDevice.Id].points.Clear();
            touch_points.Remove(e.TouchDevice.Id);
            UIElement element2 = sender as UIElement;
            element2.ReleaseTouchCapture(e.TouchDevice);
        }