private void GridControl_MouseMove(object sender, MouseEventArgs e)
{
if (hitInfo == null || e.Button != MouseButtons.Left)
{
return;
}
GridControl gc = sender as GridControl;
Rectangle dragRect = new Rectangle(new Point(
hitInfo.HitPoint.X - SystemInformation.DragSize.Width / 2,
hitInfo.HitPoint.Y - SystemInformation.DragSize.Height / 2), SystemInformation.DragSize);
if (!(hitInfo.RowHandle == GridControl.InvalidRowHandle) && !dragRect.Contains(new Point(e.X, e.Y)))
{
object gridRow = gc.FocusedView.GetRow(hitInfo.RowHandle);
EstimateProjectType pt = gridRow as EstimateProjectType;
EstimateCalculator calc = gridRow as EstimateCalculator;
Bitmap rowImage = clsDragHelper.GetRowImage((GridView)gc.FocusedView, hitInfo.RowHandle);
dragCursor = clsDragHelper.CreateCursor(rowImage, Point.Empty);
Cursor.Current = dragCursor;
if (pt != null)
{
gc.DoDragDrop(pt, DragDropEffects.Copy);
}
else if (calc != null)
{
gc.DoDragDrop(new EstimateCalculator {
EstimateCalculatorId = calc.EstimateCalculatorId, Description = calc.Description
}, DragDropEffects.Copy);
}
}
}
private void TreeList1_DragOver(object sender, DragEventArgs e)
{
TreeList tl = sender as TreeList;
// see if we dragged a GridObject or a TreeListNode
TreeListNode node = e.Data.GetData(typeof(TreeListNode)) as TreeListNode;
if (node != null)
{
e.Effect = GetDragDropEffect(tl, node);
}
else
{
EstimateProjectType ept = e.Data.GetData(typeof(EstimateProjectType)) as EstimateProjectType;
EstimateCalculator calc = e.Data.GetData(typeof(EstimateCalculator)) as EstimateCalculator;
if (ept != null)
{
e.Effect = GetDragDropEffect(tl, ept);
}
else
{
e.Effect = GetDragDropEffect(tl, calc);
}
}
}
///// <summary>
///// Get drag-drop effect for dragging from grid control
///// </summary>
///// <param name="tl">The TreeList control to apply effect to</param>
///// <param name="dragObject">The grid control row being dragged</param>
///// <returns></returns>
//private DragDropEffects GetDragDropEffect(TreeList tl, GridObject dragObject)
//{
// // get node being dragged over
// TreeListNode targetNode;
// Point p = tl.PointToClient(MousePosition);
// targetNode = tl.CalcHitInfo(p).Node;
// // allow drag to project level if from project grid, else calculator level
// bool isOK = (dragObject.IsProject && targetNode == null) || (targetNode != null && targetNode.Level == (dragObject.IsProject ? 0 : 1));
// // in case of empty project allow dropping into project
// isOK = isOK | (!dragObject.IsProject && targetNode != null && targetNode.Level == 0);// && !targetNode.HasChildren);
// return isOK ? DragDropEffects.Copy : DragDropEffects.None;
//}
/// <summary>
/// Get drag-drop effect for dragging project type from grid control
/// </summary>
/// <param name="tl">The TreeList control to apply effect to</param>
/// <param name="dragObject">The grid control row being dragged</param>
/// <returns></returns>
private DragDropEffects GetDragDropEffect(TreeList tl, EstimateProjectType dragObject)
{
// get node being dragged over
TreeListNode targetNode;
Point p = tl.PointToClient(MousePosition);
targetNode = tl.CalcHitInfo(p).Node;
//bool isProject = true;// dragObject is EstimateProjectType;
// allow drag to project level if from project grid, else calculator level
//bool isOK = (isProject && targetNode == null) || (targetNode != null && targetNode.Level == (isProject ? 0 : 1));
bool isOK = targetNode == null || (targetNode != null && targetNode.Level == 0);
// in case of empty project allow dropping into project
//isOK = isOK | (!isProject && targetNode != null && targetNode.Level == 0);
return(isOK ? DragDropEffects.Copy : DragDropEffects.None);
}
private void TreeList1_CalcNodeDragImageIndex(object sender, CalcNodeDragImageIndexEventArgs e)
{
TreeList tl = sender as TreeList;
DXDragEventArgs args = e.DragArgs.GetDXDragEventArgs(tl);
TreeListNode node = args.Data.GetData(typeof(TreeListNode)) as TreeListNode;
// draging treelist item
if (node != null)
{
// invalid drop location, show nothing
if (GetDragDropEffect(tl, node) == DragDropEffects.None)
{
e.ImageIndex = -1;
}
// dropping a child onto a parent, show INSERT arrow
else if (args.TargetNode.Level == 0 && node.Level > 0)
{
e.ImageIndex = 0;
}
// otherwise show AFTER arrow
else
{
e.ImageIndex = 2;
}
}
// dragging grid row
else
{
EstimateProjectType pt = args.Data.GetData(typeof(EstimateProjectType)) as EstimateProjectType;
EstimateCalculator calc = args.Data.GetData(typeof(EstimateCalculator)) as EstimateCalculator;
bool isProject = pt != null;
//object gridObject = args.Data.GetData(typeof(object));
// invalid drop location, show nothing
DragDropEffects dde;
if (isProject)
{
dde = GetDragDropEffect(tl, pt);
}
else
{
dde = GetDragDropEffect(tl, calc);
}
if (dde == DragDropEffects.None)
{
e.ImageIndex = -1; // no icon
}
// dropping a CALCULATOR onto a parent, show INSERT arrow
else if (args.TargetNode.Level == 0 && !isProject)
{
e.ImageIndex = 0;
}
// otherwise show AFTER arrow
else
{
e.ImageIndex = 2;
}
}
}
private void TreeList1_DragDrop(object sender, DragEventArgs e)
{
TreeList tl = sender as TreeList;
DXDragEventArgs args = e.GetDXDragEventArgs(tl);
TreeListNode targetNode = args.TargetNode;
// get treelist drag node. if null, was dragging from gridcontrol
TreeListNode dragNode = e.Data.GetData(typeof(TreeListNode)) as TreeListNode;
// dropping TreeListNode
if (dragNode != null)
{
// get drag and target parents
TreeListNode dragParent = dragNode.ParentNode;
TreeListNode targetParent = targetNode.ParentNode;
int targetIndex = tl.GetNodeIndex(targetNode);
int dragIndex = tl.GetNodeIndex(dragNode);
// if dropping a parent node
if (dragParent == null)
{
tl.MoveNode(dragNode, null, true, dragIndex < targetIndex ? targetIndex : targetIndex + 1);
}
// if dropping a child node
else
{
// if dropping child into same parent
if (targetParent == dragParent) // && dragParent != null)
{
tl.SetNodeIndex(dragNode, dragIndex < targetIndex ? targetIndex : targetIndex + 1);
}
// if dropping child into different parent
else
{
// dropping on a child of other parent
if (targetParent != null && targetParent != dragParent)
{
tl.MoveNode(dragNode, targetParent, true, tl.GetNodeIndex(targetNode) + 1); // DX: +1 to insert AFTER
}
// dropping on other parent node
if (targetParent == null && targetNode.Level != dragNode.Level) // DX: Insert a node into a root node
{
tl.MoveNode(dragNode, targetNode, true, 0);
}
}
}
e.Effect = DragDropEffects.None;
}
// dropping GridObject
else
{
EstimateProjectType pt = args.Data.GetData(typeof(EstimateProjectType)) as EstimateProjectType;
EstimateCalculator calc = args.Data.GetData(typeof(EstimateCalculator)) as EstimateCalculator;
if (pt == null && calc == null)
{
return;
}
TreeListNode parent = null;
string description;
if (pt != null)
{
description = pt.Description;
}
else
{
description = calc.Description;
}
TreeListNode newNode = tl.AppendNode(new object[] { description }, parent);
if (pt == null)
{
newNode.Tag = calc;
}
else
{
newNode.Tag = pt;
}
if (targetNode != null)
{
// dropping a CALCULATOR grid row onto root node, insert as first child
if (targetNode.Level == 0 && calc != null)
{
tl.MoveNode(newNode, targetNode, true, 0);
}
// dropping ANY type of grid row on any type of node, insert AFTER
else
{
tl.MoveNode(newNode, targetNode.ParentNode, true, tl.GetNodeIndex(targetNode) + 1);
}
}
}
if (targetNode != null && targetNode.HasChildren)
{
targetNode.Expanded = true;
}
tl.Refresh();
}