using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Drawing;
using System.Data;
using System.Text;
using System.Windows.Forms;

namespace PTWin
{
  public partial class WinPart : UserControl
  {
    public WinPart()
    {
      InitializeComponent();
    }

    protected internal virtual object GetIdValue()
    {
      return null;
    }

    public override bool Equals(object obj)
    {
      if (this.DesignMode)
        return base.Equals(obj);
      else
      {
        object id = GetIdValue();
        if (this.GetType().Equals(obj.GetType()) && id != null)
          return ((WinPart)obj).GetIdValue().Equals(id);
        else
          return false;
      }
    }

    public override int GetHashCode()
    {
      object id = GetIdValue();
      if (id != null)
        return GetIdValue().GetHashCode();
      else
        return base.GetHashCode();
    }

    public override string ToString()
    {
      object id = GetIdValue();
      if (id != null)
        return id.ToString();
      else
        return base.ToString();
    }

    #region CloseWinPart

    public event EventHandler CloseWinPart;

    protected void Close()
    {
      if (CloseWinPart != null)
        CloseWinPart(this, EventArgs.Empty);
    }

    #endregion

    #region CurrentPrincipalChanged

    public event EventHandler CurrentPrincipalChanged;

    protected internal virtual void OnCurrentPrincipalChanged(
      object sender, EventArgs e)
    {
      if (CurrentPrincipalChanged != null)
        CurrentPrincipalChanged(sender, e);
    }

    #endregion

  }
}