source: branches/HeuristicLab.DataImporter/HeuristicLab.DataImporter.Command/ChangeValues/DeleteRowsWithGivenValueCommand.cs @ 6133

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Xml;
using HeuristicLab.DataImporter.Data;
using HeuristicLab.DataImporter.Data.CommandBase;
using HeuristicLab.DataImporter.Data.Model;
using HeuristicLab.DataImporter.Command.View;
using HeuristicLab.Persistence.Default.CompositeSerializers.Storable;
using System.Drawing;

namespace HeuristicLab.DataImporter.Command {
  [StorableClass]
  [ViewableCommandInfoAttribute("Search and Remove Rows", 1, ColumnGroupState.ColumnSelected, "Change Values",
    Position = 1, OptionsView = typeof(SearchWithMatchOperationCommandView))]
  public class DeleteRowsWithGivenValueCommand : SearchWithMatchOperationCommandBase {
    private Dictionary<int, IComparable[]> deletedRows;

    private DeleteRowsWithGivenValueCommand()
      : base(null, string.Empty, null) {
      deletedRows = new Dictionary<int, IComparable[]>();
    }

    public DeleteRowsWithGivenValueCommand(DataSet dataSet, string columnGroupName, int[] affectedColumns)
      : base(dataSet, columnGroupName, affectedColumns) {
      deletedRows = new Dictionary<int, IComparable[]>();
    }

    public override string Description {
      get { return "Delete rows which match given value"; }
    }

    public override void Execute() {
      base.Execute();
      Point[] affectedCells = this.GetAffectedCells();
      int[] rows = affectedCells.Select(c => c.Y).Distinct().OrderBy(x => x).Reverse().ToArray();

      foreach (int rowIndex in rows) {
        deletedRows[rowIndex] = ColumnGroup.GetRow(rowIndex);
        ColumnGroup.DeleteRow(rowIndex);
      }
      ColumnGroup.FireChanged();
      ColumnGroup = null;
    }

    public override void UndoExecute() {
      base.UndoExecute();
      foreach (KeyValuePair<int, IComparable[]> row in deletedRows.OrderBy(x => x.Key))
        ColumnGroup.InsertRow(row.Key, row.Value);
      deletedRows.Clear();
      ColumnGroup.FireChanged();
      ColumnGroup = null;
    }
  }
}