/// <summary>
/// The node is upon to be dragged.
/// </summary>
public void InitializeDrag(IInputModeContext context)
{
reparentHandler = context.Lookup <IReparentNodeHandler>();
var graphControl = context.CanvasControl as GraphControl;
layoutHelper = new LayoutHelper(graphControl, node);
layoutHelper.InitializeLayout();
handler.InitializeDrag(context);
}
/// <summary>
/// The subtree is upon to be dragged.
/// </summary>
public void InitializeDrag(IInputModeContext context)
{
subtree = new Subtree(context.GetGraph(), node);
layoutHelper = new RelocateSubtreeLayoutHelper((GraphControl)context.CanvasControl, subtree);
layoutHelper.InitializeLayout();
compositeHandler = CreateCompositeHandler(subtree);
compositeHandler.InitializeDrag(context);
}
/// <summary>
/// Stores the initial location of the movement for reference, and calls the base method.
/// </summary>
public void InitializeDrag(IInputModeContext context)
{
handler.InitializeDrag(context);
lastLocation = new PointD(handler.Location);
}