void PerformDropToView(DragDropManagerBase sourceManager, Point pt, MoveRowsDelegate setreorderDelegate, MoveRowsDelegate moveToGroupDelegate, MoveRowsDelegate addRowsDelegate) {
UIElement element = GetVisibleHitTestElement(pt);
TreeListViewHitInfo hitInfo = GetHitInfo(element) as TreeListViewHitInfo;
int insertRowHandle = hitInfo.RowHandle;
TreeListNode insertNode = TreeListView.GetNodeByRowHandle(insertRowHandle);
TreeListDragOverEventArgs e = RaiseDragOverEvent(hitInfo, sourceManager);
if(e.Handled ? !e.AllowDrop : !e.AllowDrop || InternalBanDrop(insertRowHandle, insertNode, sourceManager)) {
ClearDragInfo(sourceManager);
sourceManager.SetDragInfoVisibility(e.ShowDragInfo);
SetDropMarkerVisibility(e.ShowDropMarker);
return;
}
if(hitInfo.HitTest == TreeListViewHitTest.DataArea) {
if(sourceManager.DraggingRows.Count > 0 && GetDataAreaElement(element) != null) {
addRowsDelegate(sourceManager, insertRowHandle, element);
} else {
ClearDragInfo(sourceManager);
}
return;
}
if(insertRowHandle == GridControl.InvalidRowHandle) {
ClearDragInfo(sourceManager);
return;
}
setreorderDelegate(sourceManager, insertRowHandle, element);
}
void PerformDropToView(DragDropManagerBase sourceManager, Point pt, MoveRowsDelegate reorderDelegate, MoveRowsDelegate moveToGroupDelegate, MoveRowsDelegate addRowsDelegate) {
UIElement element = GetVisibleHitTestElement(pt);
TableViewHitInfo hitInfo = TableView.CalcHitInfo(element);
int insertRowHandle = hitInfo.RowHandle;
if(BanDrop(insertRowHandle, hitInfo, sourceManager)) {
ClearDragInfo(sourceManager);
return;
}
if(GridControl.IsGroupRowHandle(insertRowHandle)) {
moveToGroupDelegate(sourceManager, insertRowHandle, element);
return;
}
if(IsSortedButNotGrouped() || hitInfo.HitTest == TableViewHitTest.DataArea) {
if(sourceManager.DraggingRows.Count > 0 && GetDataAreaElement(element) != null && !ReferenceEquals(sourceManager, this)) {
addRowsDelegate(sourceManager, insertRowHandle, element);
} else {
ClearDragInfo(sourceManager);
}
return;
}
if(insertRowHandle == GridControl.InvalidRowHandle) {
ClearDragInfo(sourceManager);
return;
}
if(GridControl.GroupCount > 0) {
int groupRowHandle = GridControl.GetParentRowHandle(insertRowHandle);
moveToGroupDelegate(sourceManager, groupRowHandle, element);
} else {
reorderDelegate(sourceManager, insertRowHandle, element);
}
}
protected void PerformDropToView(DragDropManagerBase sourceManager, TableViewHitInfo hitInfo, Point pt, MoveRowsDelegate reorderDelegate, Func <bool, MoveRowsDelegate> groupDelegateExtractor, MoveRowsDelegate addRowsDelegate)
{
int insertRowHandle = hitInfo.RowHandle;
var grid = GetSourceGrid();
if (this.GridControl.IsGroupRowHandle(insertRowHandle))
{
groupDelegateExtractor(true)(sourceManager, insertRowHandle, HitElement);
return;
}
if (IsSortedButNotGrouped(grid) || hitInfo.HitTest == TableViewHitTest.DataArea)
{
if (sourceManager.DraggingRows.Count > 0 && GetDataAreaElement(HitElement) != null /* && !ReferenceEquals(sourceManager, this)*/)
{
addRowsDelegate(sourceManager, insertRowHandle, HitElement);
}
else
{
ClearDragInfo(sourceManager);
}
return;
}
if (insertRowHandle == GridControl.InvalidRowHandle || insertRowHandle == GridControl.AutoFilterRowHandle || insertRowHandle == GridControl.NewItemRowHandle)
{
ClearDragInfo(sourceManager);
return;
}
if (this.GridControl.GroupCount > 0)
{
int groupRowHandle = this.GridControl.GetParentRowHandle(insertRowHandle);
if (ShouldReorderGroup(grid))
{
if (!IsSameGroup(sourceManager, GetGroupInfos(groupRowHandle), HitElement))
{
groupDelegateExtractor(false)(sourceManager, groupRowHandle, HitElement);
}
reorderDelegate(sourceManager, insertRowHandle, HitElement);
}
else
{
groupDelegateExtractor(true)(sourceManager, groupRowHandle, HitElement);
}
}
else
{
reorderDelegate(sourceManager, insertRowHandle, HitElement);
}
}