/// <summary>
/// Adds one or more <paramref name="results"/> in the location
/// specified by <paramref name="row"/> and <paramref name="dropLocation"/>
/// of this tree.
/// </summary>
/// <param name="row">the target row</param>
/// <param name="dropLocation">the relative drop location</param>
/// <param name="results">the dropped results</param>
public void AddResults(Row row, RowDropLocation dropLocation, IResultNode[] results)
{
if (!IsWorkpad || row == null || results == null || results.Length == 0)
{
return;
}
int childIndex;
// Determine child index (where to Add or Insert)
if (dropLocation == RowDropLocation.AboveRow || dropLocation == RowDropLocation.BelowRow)
{
childIndex = row.ChildIndex;
if (dropLocation == RowDropLocation.BelowRow)
{
childIndex++;
}
row = row.ParentRow;
}
else
{
childIndex = row.NumChildren;
}
IResultNode rowResult = row.Item as IResultNode;
if (rowResult != null)
{
// Copy/Move drop results to their new location
foreach (IResultNode r in results)
{
IResultNode result = r;
// Copy from old location
if (result.Parent != null)
{
result = result.DeepCopy();
}
// Add/Insert at new location
if (childIndex >= rowResult.Children.Count)
{
rowResult.AddChild(result);
}
else
{
rowResult.InsertChild(childIndex, result);
}
childIndex++;
}
}
row.UpdateChildren(false, true);
}
protected override DragDropEffects RowDropEffect(Row row, RowDropLocation dropLocation, IDataObject data)
{
if (!IsWorkpad)
{
return(base.RowDropEffect(row, dropLocation, data));
}
VirtualTree tree = GetTree(data);
if (tree == null)
{
return(DragDropEffects.None);
}
return((tree == this) ? DragDropEffects.Move : DragDropEffects.Copy);
}
protected override void OnRowDrop(Row row, RowDropLocation dropLocation, IDataObject data, DragDropEffects dropEffect)
{
base.OnRowDrop(row, dropLocation, data, dropEffect);
if (IsWorkpad)
{
Row[] rows = GetRows(data);
if (rows == null)
{
return;
}
// Delete rows from original location if dropped on the same tree
List <IResultNode> results = new List <IResultNode>();
foreach (Row r in rows.GetUniqueRowsInGuiOrder())
{
IResultNode result = (IResultNode)r.Item;
if (r.Tree == this)
{
result.Parent.RemoveChild(result);
SelectedRows.SuspendChangeNotification();
r.ParentRow.UpdateChildren(false, true);
SelectedRows.ResumeChangeNotification();
}
results.Add(result);
}
// Adds the results in the given location
AddResults(row, dropLocation, results.ToArray());
}
}
