/// <summary>
/// Event for Drag Drop of a project node.
/// </summary>
/// <param name="sender">Sending object.</param>
/// <param name="e">Drag event args.</param>
private void ProjectExplorerTreeViewDragDrop(Object sender, DragEventArgs e)
{
// Retrieve the client coordinates of the drop location.
Point targetPoint = this.projectExplorerTreeView.PointToClient(new Point(e.X, e.Y));
// Retrieve the node at the drop location.
TreeNodeAdv targetNodeAdv = this.projectExplorerTreeView.GetNodeAt(targetPoint);
// Retrieve the node that was dragged.
TreeNodeAdv[] draggedNodesAdv = e.Data.GetData(typeof(TreeNodeAdv[])) as TreeNodeAdv[];
if (draggedNodesAdv.Count() <= 0)
{
return;
}
TreeNodeAdv draggedNodeAdv = draggedNodesAdv[0];
if (draggedNodeAdv != null && targetNodeAdv != null && draggedNodeAdv != targetNodeAdv)
{
ProjectRoot projectRoot = this.ProjectExplorerViewModel.ProjectRoot;
ProjectItem draggedItem = this.GetProjectItemFromNode(draggedNodeAdv);
ProjectItem targetItem = this.GetProjectItemFromNode(targetNodeAdv);
projectRoot?.BuildParents();
if (!(draggedItem is FolderItem) || !(draggedItem as FolderItem).HasNode(targetItem))
{
switch (this.projectExplorerTreeView.DropPosition.Position)
{
case NodePosition.Before:
projectRoot.RemoveNode(draggedItem);
targetItem.Parent?.AddSibling(targetItem, draggedItem, after: false);
break;
case NodePosition.Inside:
if (targetItem is FolderItem)
{
projectRoot.RemoveNode(draggedItem);
(targetItem as FolderItem).AddChild(draggedItem);
}
break;
case NodePosition.After:
projectRoot.RemoveNode(draggedItem);
targetItem.Parent?.AddSibling(targetItem, draggedItem, after: true);
break;
}
}
this.UpdateStructure(this.ProjectExplorerViewModel.ProjectRoot);
}
}
