/// <summary>
/// 获取多个线路的共同终结点
/// </summary>
/// <param name="cs"></param>
/// <returns></returns>
private Model.Circuit GetEndPart(Model.Circuit c, IEnumerable <Model.Circuit> cs)
{
if (c.Ins.Count > 0)
{
Model.Circuit end = null;
foreach (var mc in cs)
{
//如果这条路与提供的结点相同，则查找另一条路、、保证所有子通路结点一至
if ((mc.Outs.Count > 1 ||
mc.Outs.Count == 0 ||
mc.Outs[0].Part != c.Part) && !CheckEndPart(c, mc.Outs))
{
end = null;
break;
}
else
{
end = c;
}
}
if (end == null && c.Outs.Count > 0)
{
end = GetEndPart(c.Outs[0], cs);
}
return(end);
}
return(null);
}
/// <summary>
/// 开始拖放
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
void ToolBarItem_MouseLeftButtonDown(object sender, MouseButtonEventArgs e)
{
var part = this.DataContext as Model.Part;
var item = new Model.Circuit()
{
Part = part.Clone()
};
item.Part.Id = Guid.NewGuid().ToString("n");
item.Part.TypeId = part.Id;
var unit = new Elements.Unit()
{
Model = item
};
unit.Height = Helper.Config.GridSize.Height - Helper.Config.ElementMargin.Top - Helper.Config.ElementMargin.Bottom;
unit.Width = Helper.Config.GridSize.Width - Helper.Config.ElementMargin.Left - Helper.Config.ElementMargin.Right;
unit.IcoSource = this.ico.Source;
var p = e.GetPosition(null);
//var editor = Silverlight.Common.Visual.TreeHelper.FindAnchestor<Editor>(this);
unit.StartDrag(p);
}
/// <summary>
/// 检查是否当前元素在指定的集合中所有线路中都存在
/// 如果是表示他们都以此元件为终结点
/// </summary>
/// <param name="c"></param>
/// <param name="cs"></param>
/// <returns></returns>
private bool CheckEndPart(Model.Circuit c, IEnumerable <Model.Circuit> cs)
{
bool isexists = false;
foreach (var mcs in cs)
{
isexists = true;
if (mcs.Part == c.Part)
{
isexists = true;
}
else if (!CheckEndPart(c, mcs.Outs))
{
isexists = false;
break;
}
}
return(isexists);
}
