Copy Wires

using System.Drawing;
using System.Windows.Forms;
using System.Windows.Input;

this.Component.Description = "Copy all wires connected to a node to another node.";
this.Component.Name = "Copy Wires";
this.Component.NickName = "Copy";
Instances.ActiveCanvas.KeyUp -= keyHandle;
Instances.ActiveCanvas.KeyUp += keyHandle;


  void keyHandle(object s, KeyEventArgs e)
  {
    if((e.KeyCode == Keys.Insert) && !recorded)
    {
      Find();
      if(recorded)
      {
        var toolbar = (System.Windows.Forms.ToolStrip) (Grasshopper.Instances.DocumentEditor.Controls[0].Controls[1]);
        var bitmap = new Bitmap(1, 1);
        bitmap.SetPixel(0, 0, Color.Red);
        var button = new ToolStripButton("Clear", bitmap, (sender,ev) => Clear());
        button.Name = "NAME";
        button.DisplayStyle = ToolStripItemDisplayStyle.Image;
        toolbar.Items.Add(button);
      }
    }
    else if(recorded && (e.KeyCode == Keys.Insert))
    {
      GrasshopperDocument.ScheduleSolution(5, Callback);
    }
    else if(recorded && (e.KeyCode == Keys.Escape))
    {
      Clear();
    }
  }


  bool recorded = false;
  bool inputGrip = true;
  int node = -1;
  dynamic obj;

  double disTo(PointF p1, PointF p2)
  {
    var x = Math.Abs(p1.X - p2.X);
    var y = Math.Abs(p1.Y - p2.Y);
    return x * x + y * y;
  }

  void Find()
  {
    var coor = Instances.ActiveCanvas.CursorCanvasPosition;
    obj = (GH_Component) Instances.ActiveCanvas.Document.FindObject(coor, 10);
    var dist = double.MaxValue;
    for(int i = 0;i < obj.Params.Input.Count; i++)
    {
      var pos = obj.Params.Input[i].Attributes.Pivot;
      var d = disTo(pos, coor);
      if(d < dist)
      {
        dist = d;
        inputGrip = true;
        node = i;
        recorded = true;
      }
    }
    for(int i = 0;i < obj.Params.Output.Count;i++)
    {
      var pos = obj.Params.Output[i].Attributes.Pivot;
      var d = disTo(pos, coor);
      if(d < dist)
      {
        dist = d;
        inputGrip = false;
        node = i;
        recorded = true;
      }
    }
  }

  void Callback(GH_Document doc)
  {
    var connected = inputGrip ? obj.Params.Input[node].Sources : obj.Params.Output[node].Recipients;
    Find();
    if(inputGrip)
    {
      foreach(var c in connected)
      {
        obj.Params.Input[node].AddSource(c);
      }
    }
    else
    {
      for(int i = 0;i < connected.Count;i++)
      {
        connected[i].AddSource(obj.Params.Output[node]);
      }
    }
  }

  void Clear()
  {
    recorded = false;
    node = -1;
    var toolbar = (System.Windows.Forms.ToolStrip) (Grasshopper.Instances.DocumentEditor.Controls[0].Controls[1]);
    var buttons = new List<ToolStripItem>();
    foreach (ToolStripItem item in toolbar.Items)
      if (item.Name == "NAME")
        buttons.Add(item);
    foreach (var btn in buttons)
      toolbar.Items.Remove(btn);
  }