#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;
using System.Collections;
using System.Windows.Forms;
using HeuristicLab.Persistence.Default.CompositeSerializers.Storable;

namespace HeuristicLab.DataImporter.Data.Model {
  [StorableClass]
  public abstract class ColumnBase {
    [StorableConstructor]
    protected ColumnBase(bool deserializing) : base() { }

    protected ColumnBase(string name)
      : base() {
      this.sortOrder = SortOrder.None;
      this.name = name;
    }

    public abstract Type DataType { get; }

    [Storable]
    private string name;
    public string Name {
      get { return name; }
      set { this.name = value; }
    }

    private bool selected;
    public bool Selected {
      get { return this.selected; }
      set { this.selected = value; }
    }

    [Storable]
    private SortOrder sortOrder;
    public SortOrder SortOrder {
      get { return sortOrder; }
      set { this.sortOrder = value; }
    }

    public override string ToString() {
      return this.name;
    }

    protected abstract IList Values { get; }
    public IEnumerable ValuesEnumerable {
      get { return this.Values; }
    }

    public IComparable Minimum {
      get {
        IComparable min = null;
        foreach (IComparable val in Values)
          if (val != null && (min == null || val.CompareTo(min) <= 0))
            min = val;
        return min;
      }
    }

    public IComparable Maximum {
      get {
        IComparable max = null;
        foreach (IComparable val in Values)
          if (val != null && (max == null || val.CompareTo(max) >= 0))
            max = val;
        return max;
      }
    }

    public int TotalValuesCount {
      get { return this.Values.Count; }
    }

    public int NonNullValuesCount {
      get { return TotalValuesCount - NullValuesCount; }
    }

    public int NullValuesCount {
      get {
        int i = 0;
        foreach (IComparable value in Values)
          if (value == null)
            i++;
        return i;
      }
    }

    public IComparable GetValue(int index) {
      if (index >= this.TotalValuesCount || index < 0)
        return null;
      return (IComparable)this.Values[index];
    }

    public bool ContainsNullValues {
      get {
        for (int i = 0; i < this.Values.Count; i++) {
          if (this.Values[i] == null)
            return true;
        }
        return false;
      }
    }

    public bool ContainsNotNullValues {
      get {
        for (int i = 0; i < this.Values.Count; i++) {
          if (this.Values[i] != null)
            return true;
        }
        return false;
      }
    }

    public void Resize(int size) {
      int oldCnt = this.TotalValuesCount;
      if (size > oldCnt) {
        for (int i = 0; i < size - oldCnt; i++)
          this.AddValue(null);
      } else {
        for (int i = 0; i < oldCnt - size; i++)
          this.Values.RemoveAt(this.TotalValuesCount - 1);
      }
    }

    public abstract void AddValue(IComparable value);
    public abstract void AddValueOrNull(IComparable value);
    public abstract void InsertValue(int position, IComparable value);
    public abstract void ChangeValue(int position, IComparable value);
    public abstract void ChangeValueOrNull(int position, IComparable value);
    public abstract void ChangeValueOrLeaveOldValue(int position, IComparable value);

    public void RemoveValue(int position) {
      this.Values.RemoveAt(position);
    }

    public abstract ColumnBase CreateCopyOfColumnWithoutValues();
    public abstract ColumnBase CreateCopyOfColumnWithoutValues(int capacity);

    public event EventHandler Changed;
    protected virtual void OnChanged() {
      if (this.Changed != null)
        this.Changed(this, EventArgs.Empty);
    }
    public void FireChanged() {
      this.OnChanged();
    }
  }
}