#region License Information
/* HeuristicLab
 * Copyright (C) 2002-2010 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.Linq;
using System.Windows.Forms;
using HeuristicLab.Data;
using HeuristicLab.Data.Views;
using HeuristicLab.MainForm;
using HeuristicLab.MainForm.WindowsForms;
using System.Collections.Generic;

namespace HeuristicLab.Problems.DataAnalysis.MultiVariate.Views {
  [View("Estimated Values View")]
  [Content(typeof(IMultiVariateDataAnalysisSolution))]
  public partial class EstimatedValuesView : AsynchronousContentView {
    private const string TARGETVARIABLE_SERIES_NAME = "TargetVariable";
    private const string ESTIMATEDVALUES_SERIES_NAME = "EstimatedValues";

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

    private StringConvertibleMatrixView matrixView;

    public EstimatedValuesView()
      : base() {
      InitializeComponent();
      matrixView = new StringConvertibleMatrixView();
      matrixView.Dock = DockStyle.Fill;
      this.Controls.Add(matrixView);
    }

    #region events
    protected override void RegisterContentEvents() {
      base.RegisterContentEvents();
      Content.ProblemDataChanged += new EventHandler(Content_ProblemDataChanged);
    }

    protected override void DeregisterContentEvents() {
      base.DeregisterContentEvents();
      Content.ProblemDataChanged -= new EventHandler(Content_ProblemDataChanged);
    }

    void Content_ProblemDataChanged(object sender, EventArgs e) {
      OnContentChanged();
    }

    protected override void OnContentChanged() {
      base.OnContentChanged();
      UpdateEstimatedValues();
    }

    private void UpdateEstimatedValues() {
      if (InvokeRequired) Invoke((Action)UpdateEstimatedValues);
      else {
        DoubleMatrix matrix = null;
        if (Content != null) {
          IEnumerable<string> targetVariables = Content.ProblemData.TargetVariables.CheckedItems.Select(x => x.Value.Value);
          List<double[]> estimatedValues = Content.EstimatedValues.ToList();
          double[,] values = new double[estimatedValues.Count, targetVariables.Count() * 2];
          for (int row = 0; row < estimatedValues.Count; row++) {
            int col = 0;
            foreach (string targetVariable in targetVariables) {
              values[row, col++] = Content.ProblemData.Dataset[targetVariable, row];
              values[row, col++] = estimatedValues[row][(col - 1) / 2];
            }
          }
          matrix = new DoubleMatrix(values);
          string[] partitions = new string[] { "(original)", "(estimated)" };
          matrix.ColumnNames = from targetVariable in targetVariables
                               from partition in partitions
                               select targetVariable + " " + partition;
          ;
        }
        matrixView.Content = matrix;
      }
    }
    #endregion
  }
}