#region License Information
/* HeuristicLab
 * Copyright (C) 2002-2016 Heuristic and Evolutionary Algorithms Laboratory (HEAL)
 *
 * This file is part of HeuristicLab.
 *
 * HeuristicLab is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * HeuristicLab is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with HeuristicLab. If not, see <http://www.gnu.org/licenses/>.
 */
#endregion

using System.Drawing;
using System.Linq;
using HeuristicLab.Visualization;

namespace HeuristicLab.Networks.Views.NetworkVisualization {
  [Primitive(typeof(IAlgorithmNode), true)]
  public class AlgorithmNodeRectangle : NodeRectangle {
    protected readonly Brush InactiveBrush = new SolidBrush(Color.FromArgb(255, 255, 200, 100));
    protected readonly Brush ActiveBrush = new SolidBrush(Color.FromArgb(255, 100, 200, 100));

    public new IAlgorithmNode NetworkItem {
      get { return (IAlgorithmNode)base.NetworkItem; }
      set { base.NetworkItem = value; }
    }

    public AlgorithmNodeRectangle(IChart chart, IAlgorithmNode node)
      : base(chart, node) {
      Brush = InactiveBrush;
    }

    protected override void RegisterNetworkItemEvents() {
      base.RegisterNetworkItemEvents();
      NetworkItem.StartedAlgorithmsChanged += NetworkItem_StartedAlgorithmsChanged;
      if (NetworkItem.Algorithm != null) {
        NetworkItem.Algorithm.Started += Algorithm_Started; ;
        NetworkItem.Algorithm.Stopped += Algorithm_Stopped; ;
      }
    }

    protected override void DeregisterNetworkItemEvents() {
      if (NetworkItem.Algorithm != null) {
        NetworkItem.Algorithm.Stopped -= Algorithm_Stopped; ;
        NetworkItem.Algorithm.Started -= Algorithm_Started; ;
      }
      NetworkItem.StartedAlgorithmsChanged -= NetworkItem_StartedAlgorithmsChanged;
      base.DeregisterNetworkItemEvents();
    }

    private void NetworkItem_StartedAlgorithmsChanged(object sender, System.EventArgs e) {
      Brush = ((IAlgorithmNode)sender).StartedAlgorithms.Any() ? ActiveBrush : InactiveBrush;
    }
    private void Algorithm_Started(object sender, System.EventArgs e) { Brush = ActiveBrush; }
    private void Algorithm_Stopped(object sender, System.EventArgs e) { Brush = InactiveBrush; }
  }
}