     weak var targetTableView: UITableView?
     private var draggingVerticalMotion: UIScrollView.DragMotion?
     
+    /// It will be `true` if want to hide the original cell.
     public var originCellHidden: Bool = true
+    /// Zoom scale of cell in drag.
     public var cellZoomScale: CGFloat = 1
+    /// Alpha of cell in drag.
     public var cellAlpha: CGFloat = 1
+    /// Opacity of cell shadow in drag.
     public var cellShadowOpacity: Float = 0.4
+    /// Velocity of auto scroll in drag.
     public var scrollVelocity: CGFloat = 1
     public weak var delegate: TableViewDraggerDelegate?
     public weak var dataSource: TableViewDraggerDataSource?

        return targetTableView
    }
    
    public init(tableView: UITableView) {
        super.init()
        

}

@objc public protocol TableViewDraggerDataSource: class {
    /// Return any cell if want to change the cell in drag.
    optional func dragger(dragger: TableViewDragger, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell?
    /// Return the indexPath if want to change the indexPath to start drag.
    optional func dragger(dragger: TableViewDragger, indexPathForDragAtIndexPath indexPath: NSIndexPath) -> NSIndexPath
}

