protected void OnMouseMove(MouseMoveEvent e)
{
if (this.m_Active && !this.m_Dragging && this.selectionContainer != null)
{
List <ISelectable> list = this.selectionContainer.selection.ToList <ISelectable>();
if (list.Count > 0)
{
GraphElement graphElement = list[0] as GraphElement;
bool flag = graphElement != null && graphElement.IsDroppable();
if (flag && this.m_DragAndDropDelay.CanStartDrag(e.localMousePosition))
{
DragAndDrop.PrepareStartDrag();
DragAndDrop.objectReferences = new UnityEngine.Object[0];
DragAndDrop.SetGenericData("DragSelection", list);
this.m_Dragging = true;
DragAndDrop.StartDrag("");
DragAndDrop.visualMode = ((!e.ctrlKey) ? DragAndDropVisualMode.Move : DragAndDropVisualMode.Copy);
}
e.StopPropagation();
}
}
}
