StringColumn.cs :  » Persistence-Frameworks » Ubik » StoresAndStockPricing » Controls » C# / CSharp Open Source

using System;
using System.Collections.Generic;
using System.Text;
using Ubik.Engine.Client;

namespace StoresAndStockPricing.Controls{
  public class StringColumn<T> : BoundDataGridViewColumn<T>
    where T : Individual
  {
    public delegate string GetColumnValueDelegate(Session session, T t);

    private GetColumnValueDelegate _getColumnValueDelegate;

    public delegate void SetColumnValueDelegate(Session session, T t, string value);

    private SetColumnValueDelegate _setColumnValueDelegate;

    public StringColumn(Session session, string name, GetColumnValueDelegate getColumnValueDelegate)
      : this(session, name, getColumnValueDelegate, null)
    {
    }

    public StringColumn(
      Session session,
      string name,
      GetColumnValueDelegate getColumnValueDelegate,
      SetColumnValueDelegate setColumnValueDelegate)
      : base(session, name)
    {
      if (getColumnValueDelegate == null)
        throw new ArgumentNullException("getColumnValueDelegate");

      _getColumnValueDelegate = getColumnValueDelegate;
      _setColumnValueDelegate = setColumnValueDelegate;
    }

    #region IBoundDataGridViewColumn<T> Members

    protected override object GetColumnValue(Session session, T t)
    {
      return _getColumnValueDelegate(session, t);
    }

    protected override void SetColumnValue(Session session, T t, object value)
    {
      if (_setColumnValueDelegate == null)
        throw new InvalidOperationException();

      _setColumnValueDelegate(session, t, (string)value);
    }

    public override Type PropertyType
    {
      get
      {
        return typeof(string);
      }
    }

    public override bool IsReadOnly
    {
      get
      {
        return _setColumnValueDelegate == null;
      }
    }

    #endregion
  }
}