public void ShowColumn()
{
var columnToInsert = SelectedInvisibleColumn;
var oldIndex = AvailableColumns.IndexOf(columnToInsert);
int newIndex = oldIndex;
if (newIndex >= (AvailableColumns.Count - 1))
{
--newIndex;
}
var currentlySelectedIndex = SelectedVisibleColumn != null?Columns.IndexOf(SelectedVisibleColumn) : -1;
Columns.Remove(columnToInsert);
if (currentlySelectedIndex == -1)
{
Columns.Add(columnToInsert);
}
else
{
Columns.Insert(currentlySelectedIndex, columnToInsert);
}
columnToInsert.Visible = true;
SelectedInvisibleColumn = (newIndex >= 0) ? AvailableColumns[newIndex] : null;
}
public void MoveAvailableDown()
{
var item1 = SelectedInvisibleColumn;
var item2 = AvailableColumns[AvailableColumns.IndexOf(item1) + 1];
AvailableColumns.Swap(item1, item2);
}
public void DragDrop(object sourceHost, FieldMapperGridColumn source, object targetHost, FieldMapperGridColumn target, out FieldMapperGridColumn showAvailable, out FieldMapperGridColumn showSelected)
{
showAvailable = null;
showSelected = null;
if (sourceHost == AvailableColumns && targetHost == AvailableColumns)
{
return;
}
if (sourceHost == AvailableColumns && targetHost == SelectedColumns && source != target)
{
source.Visible = true;
AvailableColumns.Remove(source);
if (target == null)
{
AvailableColumns.Add(source);
}
else
{
AvailableColumns.Insert(AvailableColumns.IndexOf(target), source);
}
}
else if (sourceHost == SelectedColumns && targetHost == AvailableColumns)
{
source.Visible = false;
showAvailable = source;
}
else if (source != target)
{
AvailableColumns.Remove(source);
if (target == null)
{
AvailableColumns.Add(source);
}
else
{
AvailableColumns.Insert(AvailableColumns.IndexOf(target), source);
}
}
}