private void trvBaseLayers_DragDrop(object sender, DragEventArgs e)
{
var rids = e.Data.GetData(typeof(RepositoryHandle[])) as RepositoryHandle[];
var data = e.Data.GetData(typeof(TreeNodeAdv[])) as TreeNodeAdv[];
if (rids != null && rids.Length > 0)
{
int added = 0;
var node = trvBaseLayers.GetNodeAt(trvBaseLayers.PointToClient(new Point(e.X, e.Y)));
IBaseMapGroup group = null;
if (node != null && node.Tag is BaseLayerGroupItem)
{
group = ((BaseLayerGroupItem)node.Tag).Tag;
}
//No group? Let's make one!
if (group == null)
{
group = _tsd.AddBaseLayerGroup(GenerateBaseGroupName(_tsd));
}
IBaseMapLayer focusLayer = null;
foreach (var rid in rids)
{
if (rid.ResourceId.ResourceType == ResourceTypes.LayerDefinition.ToString())
{
focusLayer = group.AddLayer(GenerateBaseLayerName(rid.ResourceId.ToString(), _tsd), rid.ResourceId.ToString());
added++;
}
}
if (added > 0)
{
_tiledLayerModel.Invalidate();
if (focusLayer != null)
{
RestoreBaseLayerSelection(focusLayer);
}
}
}
else if (data != null && data.Length == 1)
{
var li = data[0].Tag as BaseLayerItem;
if (li != null)
{
IBaseMapLayer sourceLayer = li.Tag;
IBaseMapLayer targetLayer = null;
IBaseMapGroup targetGroup = null;
var node = trvBaseLayers.GetNodeAt(trvBaseLayers.PointToClient(new Point(e.X, e.Y)));
BaseLayerItem tli = null;
if (node != null)
{
tli = node.Tag as BaseLayerItem;
var tlg = node.Tag as BaseLayerGroupItem;
if (tli != null)
{
targetLayer = tli.Tag;
}
else if (tlg != null)
{
targetGroup = tlg.Tag;
}
}
if (sourceLayer != null && targetGroup != null && targetGroup.GetIndex(sourceLayer) < 0) //Dropping to a different base layer group
{
var srcGroup = _tsd.GetGroupForLayer(sourceLayer);
srcGroup.RemoveBaseMapLayer(sourceLayer);
targetGroup.InsertLayer(0, sourceLayer);
_tiledLayerModel.Invalidate();
//Keep group expanded
if (tli != null)
{
RestoreBaseLayerSelection(sourceLayer);
}
}
else if (sourceLayer != null && targetLayer != null && sourceLayer != targetLayer)
{
var srcGroup = _tsd.GetGroupForLayer(sourceLayer);
var dstGroup = _tsd.GetGroupForLayer(targetLayer);
if (srcGroup != null)
{
if (srcGroup == dstGroup)
{
int idx = srcGroup.GetIndex(targetLayer);
if (idx >= 0)
{
srcGroup.RemoveBaseMapLayer(sourceLayer);
srcGroup.InsertLayer(idx, sourceLayer);
_tiledLayerModel.Invalidate();
//Keep group expanded
if (tli != null)
{
RestoreBaseLayerSelection(sourceLayer);
}
}
}
else
{
srcGroup.RemoveBaseMapLayer(sourceLayer);
dstGroup.InsertLayer(0, targetLayer);
_tiledLayerModel.Invalidate();
//Keep group expanded
if (tli != null)
{
RestoreBaseLayerSelection(targetLayer);
}
}
}
}
}
}
}