#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;
using System.Collections.Generic;
using System.Windows.Forms;
using HeuristicLab.Common;
using HeuristicLab.PluginInfrastructure;

namespace HeuristicLab.Problems.DataAnalysis.Views {
  internal partial class BenchmarkGeneratorDialog : Form {
    private bool initialized;

    private IDataAnalysisProblem Content;

    private IDataAnalysisProblemData problemData;
    public IDataAnalysisProblemData ProblemData {
      get {
        return problemData;
      }
    }

    public BenchmarkGeneratorDialog(IDataAnalysisProblem Content) {
      initialized = false;
      InitializeComponent();
      this.Content = Content;
    }

    private void NewItemDialog_Load(object sender, EventArgs e) {
      if (!initialized) {
        IEnumerable<IDataAnalysisBenchmarkProblemDataGenerator> generators = new List<IDataAnalysisBenchmarkProblemDataGenerator>();
        if (Content is IRegressionProblem)
          generators = ApplicationManager.Manager.GetInstances<IRegressionBenchmarkProblemDataGenerator>();
        else if (Content is IClassificationProblem)
          generators = ApplicationManager.Manager.GetInstances<IClassificationBenchmarkProblemDataGenerator>();
        else if (Content is IClusteringProblem)
          generators = ApplicationManager.Manager.GetInstances<IClusteringBenchmarkProblemDataGenerator>();

        foreach (var generator in generators) {
          ListViewItem item = new ListViewItem(new string[] { generator.Name, generator.Description });
          item.Tag = generator;
          BenchmarkGeneratorListView.Items.Add(item);
        }

        BenchmarkGeneratorListView.ListViewItemSorter = new ListViewItemComparer();

        for (int i = 0; i < BenchmarkGeneratorListView.Columns.Count; i++)
          BenchmarkGeneratorListView.Columns[i].AutoResize(ColumnHeaderAutoResizeStyle.ColumnContent);

        initialized = true;
      }
    }

    private void NewItemDialog_Shown(object sender, EventArgs e) {
      problemData = null;
    }

    private void BenchmarkGeneratorListView_SelectedIndexChanged(object sender, EventArgs e) {
      okButton.Enabled = BenchmarkGeneratorListView.SelectedItems.Count == 1;
    }

    private void okButton_Click(object sender, EventArgs e) {
      if (BenchmarkGeneratorListView.SelectedItems.Count == 1) {
        problemData = ((IDataAnalysisBenchmarkProblemDataGenerator)BenchmarkGeneratorListView.SelectedItems[0].Tag).GenerateProblemData();
        DialogResult = DialogResult.OK;
        Close();
      }
    }

    private void BenchmarkGeneratorListView_DoubleClick(object sender, EventArgs e) {
      if (BenchmarkGeneratorListView.SelectedItems.Count == 1) {
        problemData = ((IDataAnalysisBenchmarkProblemDataGenerator)BenchmarkGeneratorListView.SelectedItems[0].Tag).GenerateProblemData();
        DialogResult = DialogResult.OK;
        Close();
      }
    }

    private class ListViewItemComparer : IComparer {
      private NaturalStringComparer comp = new NaturalStringComparer();

      public int Compare(object x, object y) {
        return comp.Compare(((ListViewItem)x).SubItems[0].Text, ((ListViewItem)y).SubItems[0].Text);
      }
    }
  }
}