private void listViewTabs_ItemDrag(object sender, ItemDragEventArgs e)
{
var listViewItem = e.Item as ListViewItem;
if (listViewItem != null)
{
DragableListItem dragableListItem = _listViewDataSource.FirstOrDefault(x => x.Index == listViewItem.Index);
if (dragableListItem != null)
{
DoDragDrop(dragableListItem, DragDropEffects.Move);
}
}
}
private void listViewTabs_AfterLabelEdit(object sender, LabelEditEventArgs e)
{
if (e.Label.Length <= MAX_LABEL_LENGTH && e.Label.Length >= MIN_LABEL_LENGTH)
{
DragableListItem listViewItem = _listViewDataSource.FirstOrDefault(x => x.Index == e.Item);
if (listViewItem != null)
{
listViewItem.Label = e.Label;
}
TabDataChanged = true;
return;
}
string textboxMessage = $"Invalid label length. The tab label must be between {MIN_LABEL_LENGTH} and {MAX_LABEL_LENGTH} characters long";
e.CancelEdit = true;
MessageBox.Show(this, textboxMessage, "Unable to edit label", MessageBoxButtons.OK, MessageBoxIcon.Exclamation);
}
private void listViewTabs_DragDrop(object sender, DragEventArgs e)
{
if (!e.Data.GetDataPresent(typeof(DragableListItem)))
{
return;
}
if (listViewTabs.SelectedItems.Count == 0)
{
return;
}
Point p = listViewTabs.PointToClient(MousePosition);
ListViewItem liteViewItemClosestToDropPosition = GetClosestItemInRelationToDropPosition(listViewTabs, p);
var dragItem = e.Data.GetData(typeof(DragableListItem)) as DragableListItem;
if (liteViewItemClosestToDropPosition == null || liteViewItemClosestToDropPosition.Index == dragItem.Index)
{
return;
}
int originalIndex = dragItem.Index;
int newIndex = liteViewItemClosestToDropPosition.Index;
if (radioButtonSwitch.Checked)
{
DragableListItem listItem1 = _listViewDataSource.First(x => x.Index == newIndex);
DragableListItem listItem2 = _listViewDataSource.First(x => x.Index == originalIndex);
listItem1.Index = originalIndex;
listItem2.Index = newIndex;
}
else
{
int minIndex = Math.Min(newIndex, originalIndex);
int maxIndex = Math.Max(newIndex, originalIndex);
bool leftShift = newIndex > originalIndex;
if (leftShift)
{
var itemsToShiftIndex = _listViewDataSource.Where(x => x.Index > minIndex && x.Index <= maxIndex).OrderBy(x => x.Index).ToList();
DragableListItem listViewItemToSwitch = _listViewDataSource.First(x => x.Index == minIndex);
foreach (DragableListItem listItem in itemsToShiftIndex)
{
listItem.Index = listItem.Index - 1;
}
listViewItemToSwitch.Index = maxIndex;
}
else
{
var itemsToShiftIndex = _listViewDataSource.Where(x => x.Index >= minIndex && x.Index < maxIndex).OrderBy(x => x.Index).ToList();
DragableListItem listViewItemToSwitch = _listViewDataSource.First(x => x.Index == maxIndex);
foreach (DragableListItem listItem in itemsToShiftIndex)
{
listItem.Index = listItem.Index + 1;
}
listViewItemToSwitch.Index = minIndex;
}
}
TabDataChanged = true;
_listViewDataSource.Sort();
LoadTabPageCollection();
}
