/// <summary>
/// Starts a drag operation on a GUI element.
/// </summary>
/// <param name="editorWindow">Reference to the current editor drawing the GUI (used when a Repaint is needed)</param>
/// <param name="draggableList">List containing the dragged item and all other relative draggable items</param>
/// <param name="dragItem">Item being dragged</param>
/// <param name="draggedItemIndex">DraggableList index of the item being dragged</param>
/// <param name="optionalData">Optional data that can be retrieved via the <see cref="optionalDragData"/> static property</param>
public static void StartDrag(EditorWindow editorWindow, IList draggableList, object dragItem, int draggedItemIndex, object optionalData = null)
{
if (_dragData != null) return;
Reset();
_editor = null;
_editorWindow = editorWindow;
_dragData = new GUIDragData(draggableList, dragItem, draggedItemIndex, optionalData);
}
static void Reset()
{
_dragData = null;
_waitingToApplyDrag = false;
}
