using System;
using System.Drawing;
namespace Netron.Diagramming.Core {
  /// <summary>
  /// ICommand implementation of the AddConnection action
  /// </summary>
  class AddConnectionCommand : Command {
    IConnection connection;

    public IConnection Connection {
      get { return connection; }
    }



    public AddConnectionCommand(IController controller, IConnection connection)
      : base(controller) {
      if (connection == null)
        throw new ArgumentNullException("The connection is 'null' and cannot be inserted.");
      this.Text = "Add " + connection.EntityName;
      this.connection = connection;
    }

    public override void Redo() {
      Controller.Model.AddConnection(connection);

      //connection.Location = location;
      Rectangle rec = connection.Rectangle;
      rec.Inflate(20, 20);
      Controller.View.Invalidate(rec);
    }

    public override void Undo() {
      Rectangle rec = connection.Rectangle;
      rec.Inflate(20, 20);
      Controller.Model.Remove(connection);
      Controller.View.Invalidate(rec);

    }


  }

}