// Drop event.
// Move Objects to new parents on drag success.
private void Dropped(Object sender, ModelDropEventArgs e)
{
e.Handled = true;
switch (e.DropTargetLocation)
{
case DropTargetLocation.None:
DragDropMoveNodes(null, e.SourceModels);
break;
case DropTargetLocation.Item:
DragDropMoveNodes(e.TargetModel as BaseTreeNode, e.SourceModels);
break;
default:
return;
}
// TODO:
// We might not be able to use RefreshObjects() if we change the target parent.
e.RefreshObjects();
}
private void PluginTree_ModelDropped(object sender, ModelDropEventArgs e)
{
if (e.DropTargetLocation == DropTargetLocation.Item)
{
var group = e.TargetModel as IGroupRecord;
if (group == null)
{
return;
}
var objects = new List <BaseRecord>();
foreach (IRecord record in e.SourceModels)
{
if (e.Effect == DragDropEffects.Copy)
{
var r = record.Clone() as BaseRecord;
group.AddRecord(r);
objects.Add(r);
}
else if (e.Effect == DragDropEffects.Move)
{
var r = record as BaseRecord;
if (r != null && r.Parent.DeleteRecord(r))
{
group.AddRecord(r);
objects.Add(r);
}
}
}
e.RefreshObjects();
PluginTree.SelectObject(objects);
PluginTree.RefreshObject(group);
PluginTree.RefreshObjects(objects);
}
else if (e.DropTargetLocation == DropTargetLocation.AboveItem ||
e.DropTargetLocation == DropTargetLocation.BelowItem)
{
int offset = e.DropTargetLocation == DropTargetLocation.BelowItem ? +1 : 0;
var rec = (e.TargetModel as IRecord);
if (rec == null)
{
return;
}
var group = rec.Parent as IGroupRecord;
if (group == null)
{
return;
}
int idx = group.IndexOf(rec as BaseRecord) + offset;
var refreshObjects = new List <BaseRecord>();
var selObjects = new List <BaseRecord>();
IEnumerable <IRecord> itr = e.SourceModels.OfType <IRecord>();
if (e.DropTargetLocation == DropTargetLocation.BelowItem)
{
itr = itr.Reverse();
}
foreach (IRecord record in itr)
{
if (e.Effect == DragDropEffects.Copy)
{
var r = record.Clone() as BaseRecord;
group.InsertRecord(idx, r);
selObjects.Add(r);
}
else if (e.Effect == DragDropEffects.Move)
{
var r = record as BaseRecord;
var p = r.Parent;
if (r.Parent.DeleteRecord(r))
{
idx = group.IndexOf(rec as BaseRecord) + offset;
group.InsertRecord(idx, r);
selObjects.Add(r);
}
}
}
e.RefreshObjects();
PluginTree.SelectObject(selObjects);
PluginTree.RefreshObject(group);
PluginTree.RefreshObjects(selObjects);
}
}