/// <summary>
/// 开始拖拽（可指定是否为新连接）
/// </summary>
/// <param name="start"></param>
/// <param name="link"></param>
/// <param name="thumb"></param>
/// <param name="isNew"></param>
protected virtual void BeginDrag(Point start, ILink link, LinkThumbKind thumb, bool isNew)
{
_isNewLink = isNew;
DragStart = start;
Link = link;
Thumb = thumb;
InitialState = new LinkInfo(link);
Adorner = CreateAdorner();
(View.AllFeature["Drag"] as AddAdornerFeature).SetPublicAdorner("Drag", Adorner);
}
/// <summary>
/// 结束拖动
/// </summary>
/// <param name="doCommit"></param>
public virtual void EndDrag(bool doCommit)
{
if (doCommit)
{
Controller.UpdateLink(InitialState, Link);
}
else
{
if (_isNewLink)
{
View.Children.Remove((Control)Link);
}
else
{
InitialState.UpdateLink(Link);
}
}
Link.UpdatePath();
Link = null;
Adorner = null;
}
