/// <summary>
///
/// </summary>
/// <param name="e"></param>
protected override void OnDragDrop(System.Windows.Forms.DragEventArgs e)
{
// Custom cursor handling
if (this._dragCursorType == DragCursorType.DragIcon)
{
this.Cursor = Cursors.Default;
}
this._formDrag.Visible = false;
// Check it's a treenode being dragged
if (e.Data.GetDataPresent("UIMapToolbox.UI.DragData", false))
{
DragData dragData = (DragData)e.Data.GetData("UIMapToolbox.UI.DragData");
List <TreeNode> dragNodes = dragData.Nodes;
// Get the target node from the mouse coords
Point pt = ((TreeView)this).PointToClient(new Point(e.X, e.Y));
TreeNode targetNode = this.GetNodeAt(pt);
// De-color it
targetNode.BackColor = SystemColors.HighlightText;
targetNode.ForeColor = SystemColors.ControlText;
CustomDragCompleteEventArgs ea = new CustomDragCompleteEventArgs();
foreach (TreeNode dragNode in dragNodes)
{
// 1) Check we're not dragging onto ourself
// 2) Check we're not dragging onto one of our children
// (this is the lazy way, will break if there are nodes with the same name,
// but it's quicker than checking all nodes below is)
// 3) Check we're not dragging onto our parent
if (targetNode != dragNode && !targetNode.FullPath.StartsWith(dragNode.FullPath) && dragNode.Parent != targetNode)
{
// Copy the node, add as a child to the destination node
TreeNode newTreeNode = (TreeNode)dragNode.Clone();
targetNode.Nodes.Add(newTreeNode);
targetNode.Expand();
// Remove Original Node, set the dragged node as selected
dragNode.Remove();
this.SelectedNode = newTreeNode;
this.Cursor = Cursors.Default;
ea.SourceNodes.Add(dragNode);
ea.SourceUIMapFile = dragData.UIMapFile;
ea.TargetNode = targetNode;
}
}
// Call drag complete event
if ((this.DragComplete != null) && (ea.SourceNodes.Count != 0))
{
this.DragComplete(this, ea);
}
}
}
private void tvUIMap_DragComplete(object sender, CustomDragCompleteEventArgs e)
{
if ((e == null) || (e.TargetNode == null))
{
return;
}
string destElementParentPath = (string)e.TargetNode.Tag;
UIMapFile sourceUIMapFile = e.SourceUIMapFile;
if (sourceUIMapFile == null)
{
return;
}
try
{
// move selected nodes
foreach (TreeNode sourceNode in e.SourceNodes)
{
string srcElementPath = (string)sourceNode.Tag;
if (sourceUIMapFile == null)
{
// same UIMap
_uiMapFile.MoveUIObject(srcElementPath, destElementParentPath);
}
else
{
// from other UIMap
_uiMapFile.MoveUIObject(sourceUIMapFile, srcElementPath, destElementParentPath);
}
}
RedrawTree(destElementParentPath);
}
catch (Exception ex)
{
MessageBox.Show(ex.Message, Program.ApplicationName, MessageBoxButtons.OK, MessageBoxIcon.Warning);
}
}