#region License Information
/* HeuristicLab
 * Copyright (C) 2002-2013 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.Linq;
using HeuristicLab.DataImporter.Command.View;
using HeuristicLab.DataImporter.Data;
using HeuristicLab.DataImporter.Data.CommandBase;
using HeuristicLab.DataImporter.Data.Model;
using HeuristicLab.Persistence.Default.CompositeSerializers.Storable;

namespace HeuristicLab.DataImporter.Command {
  [StorableClass]
  [ViewableCommandInfoAttribute("New ProgrammableColumn", 1, ColumnGroupState.Active, "Column Commands", Position = 10,
  OptionsView = typeof(ProgrammableColumnCommandView))]
  public class AddNewProgrammableColumnCommand : AddNewColumnCommandBase {
    [StorableConstructor]
    protected AddNewProgrammableColumnCommand(bool deserializing) : base(deserializing) { }

    public AddNewProgrammableColumnCommand(DataSet dataSet, string columnGroupName)
      : this(dataSet, columnGroupName, "New ProgrammableColumn") {
    }

    public AddNewProgrammableColumnCommand(DataSet dataSet, string columnGroupName, string columnName)
      : base(dataSet, columnGroupName, columnName, typeof(ProgrammableColumn)) {
    }

    public override string Description {
      get { return "New programmable column"; }
    }

    [Storable]
    private string expression;
    public string Expression {
      get { return expression; }
      set { expression = value; }
    }

    public override void Execute() {
      this.UpdateColumnGroup();
      NewColumn = new ProgrammableColumn(ColumnName, ColumnGroup);
      NewColumn.Resize(ColumnGroup.RowCount);
      try {
        ((ProgrammableColumn)NewColumn).Expression = expression;
      }
      catch (ParseException ex) {
        throw new CommandExecutionException("Error occured during parsing of expression.", ex, this);
      }

      if (ColumnIndex == -1) {
        ColumnBase cb = ColumnGroup.Columns.FirstOrDefault(x => x.Selected);
        if (cb != null) ColumnIndex = ColumnGroup.IndexOfColumn(cb);
      }
      if (ColumnIndex != -1) {
        ColumnGroup.InsertColumn(ColumnIndex + 1, NewColumn);
      } else {
        ColumnGroup.AddColumn(NewColumn);
      }
      ColumnGroup.FireChanged();
      ColumnGroup = null;
    }
  }
}