#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.Collections.Generic;
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("Delete ColumnGroup", 1, ColumnGroupState.Active, "ColumnGroup Commands", Position = 1, MinActiveColumnGroups = 1)]
  public class DeleteColumnGroupCommand : DataSetCommandWithAffectedColumnGroupsBase {
    private List<KeyValuePair<int, ColumnGroup>> deletedColumnGroups;

    private DeleteColumnGroupCommand()
      : base(null, null) {
      deletedColumnGroups = new List<KeyValuePair<int, ColumnGroup>>();
    }

    public DeleteColumnGroupCommand(DataSet dataSet, List<string> affectedColumnGroupNames)
      : base(dataSet, affectedColumnGroupNames) {
      deletedColumnGroups = new List<KeyValuePair<int, ColumnGroup>>();
    }

    public override string Description {
      get { return "Delete ColumnGroup"; }
    }

    public override void Execute() {
      base.Execute();
      ColumnGroup columnGroup;
      foreach (string columnGroupName in AffectedColumnGroupNames) {
        columnGroup = this.DataSet.GetColumnGroup(columnGroupName);
        deletedColumnGroups.Add(new KeyValuePair<int, ColumnGroup>(this.DataSet.IndexOfColumnGroup(columnGroup), columnGroup));
        this.DataSet.RemoveColumnGroup(columnGroup);
      }
      this.DataSet.FireChanged();
    }

    public override void UndoExecute() {
      base.UndoExecute();
      deletedColumnGroups.Reverse();
      for (int i = 0; i < deletedColumnGroups.Count; i++)
        this.DataSet.InsertColumnGroup(deletedColumnGroups[i].Key, deletedColumnGroups[i].Value);
      deletedColumnGroups.Clear();
      this.DataSet.FireChanged();
    }
  }
}