Extended Interface for Toolbars

using System;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;

namespace ExtendedInterface
{
///<summary>
/// Extended Interface to allow status messages from a menu item to appear in the status bar automatically
///</summary>

   [ProvideProperty( "StatusMessage", typeof(Component)) ]
   public class StatusMessage : Component, IExtenderProvider 
   {
      Hashtable m_Dictionary = new Hashtable( );

      ///<summary>
      /// Assign the message that will appear in the StatusBarPanel when a MenuItem is selected
      ///</summary>

      public void SetStatusMessage( Component pComponent, string strMessage )
      {
         if( ! m_Dictionary.Contains( pComponent ))
         {
            m_Dictionary.Add( pComponent, strMessage );

            MenuItem pMenuItem = pComponent as MenuItem;

            if( pMenuItem != null )
               pMenuItem.Select += new EventHandler( Handle_MenuSelect );
         }
         else 
         {
            m_Dictionary[ pComponent ] = strMessage;
         }
      }

      ///<summary>
      /// Retrieve the message that will appear in the StatusBarPanel when a MenuItem is selected
      ///</summary>

      public string GetStatusMessage( Component pComponent )
      {
         if( m_Dictionary.Contains( pComponent ))
            return (string) m_Dictionary[ pComponent ];

         return null;
      }

   ///<summary>
   /// Definition of the components that will be extended
   ///</summary>

      public bool CanExtend( object pComponent )
      {
         return( pComponent is MenuItem );
      }

      private StatusBarPanel m_StatusBar;

   ///<summary>
   /// Assign the StatusBarPanel that will display the menu's message
   ///</summary>

      public StatusBarPanel StatusBar
      {
         get{ return m_StatusBar;  }
         set{ m_StatusBar = value; }
      }

      private void Handle_MenuSelect( Object pControl, EventArgs e )
      {
         if( StatusBar == null )
            return;

         if( m_Dictionary.Contains( pControl ))
            StatusBar.Text = (string) m_Dictionary[ pControl ];
      }
   }
}