source: branches/GeneralizedQAP/HeuristicLab.Problems.GeneralizedQuadraticAssignment.Views/3.3/ProblemView.cs @ 7448

#region License Information
/* HeuristicLab
 * Copyright (C) 2002-2012 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;
using System.Collections.Generic;
using System.Linq;
using System.Windows.Forms;
using HeuristicLab.Core.Views;
using HeuristicLab.MainForm;
using HeuristicLab.MainForm.WindowsForms;
using HeuristicLab.Optimization;
using HeuristicLab.PluginInfrastructure;
using HeuristicLab.Problems.Instances;

namespace HeuristicLab.Problems.GeneralizedQuadraticAssignment.Views {
  [View("ProblemView")]
  [Content(typeof(Problem), IsDefaultView = true)]
  public partial class ProblemView : ParameterizedNamedItemView {

    public new Problem Content {
      get { return (Problem)base.Content; }
      set { base.Content = value; }
    }

    public ProblemView() {
      InitializeComponent();
    }

    protected override void OnContentChanged() {
      base.OnContentChanged();
      if (Content == null) {
        problemInstanceProviderComboBox.DataSource = null;
      } else {
        problemInstanceProviderComboBox.DisplayMember = "Name";
        problemInstanceProviderComboBox.DataSource = GetProblemInstanceProviders().ToList();
      }
    }

    protected override void SetEnabledStateOfControls() {
      base.SetEnabledStateOfControls();
      problemInstanceProviderComboBox.Enabled = !ReadOnly && !Locked && Content != null;
    }

    private void problemInstanceProviderComboBox_SelectedIndexChanged(object sender, System.EventArgs e) {
      var provider = (IProblemInstanceProvider)problemInstanceProviderComboBox.SelectedItem;
      provider.SetConsumer((IProblemInstanceConsumer)Content);
      problemInstanceProviderViewHost.Content = provider;
    }

    private void comboBox_DataSourceChanged(object sender, EventArgs e) {
      var comboBox = (ComboBox)sender;
      if (comboBox.DataSource == null)
        comboBox.Items.Clear();
    }

    protected virtual IEnumerable<IProblemInstanceProvider> GetProblemInstanceProviders() {
      var consumerTypes = Content.GetType().GetInterfaces()
        .Where(x => x.IsGenericType
          && typeof(IProblemInstanceConsumer).IsAssignableFrom(x));

      if (consumerTypes.Any()) {
        var instanceTypes = consumerTypes
          .Select(x => x.GetGenericArguments().First())
          .Select(x => typeof(IProblemInstanceProvider<>).MakeGenericType(x));

        foreach (var type in instanceTypes) {
          foreach (var provider in ApplicationManager.Manager.GetInstances(type))
            yield return (IProblemInstanceProvider)provider;
        }
      }
    }
  }
}