source: branches/PersistenceOverhaul/HeuristicLab.ExtLibs/HeuristicLab.Netron/3.0.2672.12446/Netron.Diagramming.Core-3.0.2672.12446/UndoRedo/Commands/DeleteCommand.cs

using System.Drawing;
namespace Netron.Diagramming.Core {
  /// <summary>
  /// Delete command.
  /// </summary>
  public class DeleteCommand : Command {
    #region Fields
    CollectionBase<IDiagramEntity> bundle;
    IController controller;

    #endregion

    #region Properties


    /// <summary>
    /// Gets the entities.
    /// </summary>
    /// <value>The shape.</value>
    public CollectionBase<IDiagramEntity> Entities {
      get { return bundle; }
    }

    #endregion

    #region Constructor
    /// <summary>
    /// Initializes a new instance of the <see cref="T:DeleteCommand"/> class.
    /// </summary>
    /// <param name="controller">The controller.</param>
    /// <param name="bundle">The bundle.</param>
    public DeleteCommand(
        IController controller,
        CollectionBase<IDiagramEntity> bundle)
      : base(controller) {
      this.Text = "Delete";
      this.controller = controller;
      this.bundle = bundle;

    }
    #endregion

    #region Methods

    /// <summary>
    /// Perform redo of this command.
    /// </summary>
    public override void Redo() {
      if (bundle.Count == 0) return;

      foreach (IDiagramEntity entity in bundle) {
        //this.Controller.Model.DefaultPage.DefaultLayer.Entities.Remove(entity);
        Controller.Model.Remove(entity);
      }
      this.Controller.View.HideTracker();
      Rectangle rec = Utils.BoundingRectangle(bundle);
      rec.Inflate(30, 30);
      this.Controller.View.Invalidate(rec);
    }

    /// <summary>
    /// Perform undo of this command.
    /// </summary>
    public override void Undo() {

      if (bundle.Count == 0) return;

      foreach (IDiagramEntity entity in bundle) {
        //this.Controller.Model.DefaultPage.DefaultLayer.Entities.Add(entity);
        Controller.Model.AddEntity(entity);
      }
      this.Controller.View.HideTracker();

      Rectangle rec = Utils.BoundingRectangle(bundle);
      rec.Inflate(30, 30);
      this.Controller.View.Invalidate(rec);



    }


    #endregion
  }

}