Undo/Redo With Non Realtime Dragging and Shifting

GoJS
3

Add this removeAll statement to the DropZoneDraggingTool.doDragOver method override, after the call to Node.findTreeParts:

          this._subtree = link.toNode.findTreeParts();
          this._subtree.removeAll(this.diagram.selection);
          // shift subtree rightward ...

I have also updated the original code in that other topic: Dynamic Layer Spacing for Tree Layout