source: branches/GeneralizedQAP/HeuristicLab.Problems.GeneralizedQuadraticAssignment.Views/3.3/ProblemView.cs @ 7539

#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.Reflection;
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) {
      if (problemInstanceProviderComboBox.SelectedIndex >= 0) {
        var provider = (IProblemInstanceProvider)problemInstanceProviderComboBox.SelectedItem;
        var genericType = provider.GetType().GetInterfaces().Single(x => x.IsGenericType && x.GetGenericTypeDefinition() == typeof(IProblemInstanceProvider<>)).GetGenericArguments().First();
        this.GetType().GetMethod("SetConsumable", BindingFlags.NonPublic | BindingFlags.Instance)
          .MakeGenericMethod(genericType).Invoke(this, new object[] { provider, Content });
        problemInstanceProviderViewHost.Content = provider;
      }
    }

    /// <summary>
    /// Do not change method name without changing the string reference above
    /// </summary>
    private void SetConsumable<T>(IProblemInstanceProvider<T> producer, IConsumable<T> consumer) {
      producer.Consumer = consumer;
    }

    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
          && x.GetGenericTypeDefinition() == typeof(IConsumable<>));

      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;
        }
      }
    }

    protected virtual string GetProviderToolTip(IProblemInstanceProvider provider) {
      if (provider.WebLink != null) {
        return provider.Name
            + Environment.NewLine
            + provider.WebLink.ToString()
            + Environment.NewLine + Environment.NewLine
            + provider.ReferencePublication;
      } else {
        return provider.Name
            + Environment.NewLine + Environment.NewLine
            + provider.ReferencePublication;
      }
    }

    private void problemInstanceProviderComboBox_ToolTipRequired(object sender, ToolTipRequiredEventArgs e) {
      e.ToolTip = GetProviderToolTip((IProblemInstanceProvider)e.Item);
    }
  }
}