---

TAbstractCellEditor.java

/*
*  Name:        TAbstractCellEditor.java
*  Author:      Philip Milne
*               Scott Violet
*  Maintainer:  Rafael Jesus Alcantara Perez
*  Summary:     Abstract cell editor.
*  Date:        $Date: 2003/09/28 23:22:05 $
*  Revision:    $Revision: 1.2 $
*
*  Copyright (C) 2003  Rafael Jesus Alcantara Perez <rafa@dedalo-ing.com>
*
*  This program 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 2 of the License, or
*  (at your option) any later version.
*
*  This program 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 this program; if not, write to the Free Software
*  Foundation, Inc., 59 Temple Place, Suite 330, Boston,
*  MA 02111-1307, USA.
*
*
*  Copyright 1997-2000 Sun Microsystems, Inc. All Rights Reserved.
*
*  Redistribution and use in source and binary forms, with or
*  without modification, are permitted provided that the following
*  conditions are met:
*
*  - Redistributions of source code must retain the above copyright
*    notice, this list of conditions and the following disclaimer.
*
*  - Redistribution in binary form must reproduce the above
*    copyright notice, this list of conditions and the following
*    disclaimer in the documentation and/or other materials
*    provided with the distribution.
*
*  Neither the name of Sun Microsystems, Inc. or the names of
*  contributors may be used to endorse or promote products derived
*  from this software without specific prior written permission.
*
*  This software is provided "AS IS," without a warranty of any
*  kind. ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND
*  WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY,
*  FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT, ARE HEREBY
*  EXCLUDED. SUN AND ITS LICENSORS SHALL NOT BE LIABLE FOR ANY
*  DAMAGES OR LIABILITIES SUFFERED BY LICENSEE AS A RESULT OF OR
*  RELATING TO USE, MODIFICATION OR DISTRIBUTION OF THIS SOFTWARE OR
*  ITS DERIVATIVES. IN NO EVENT WILL SUN OR ITS LICENSORS BE LIABLE
*  FOR ANY LOST REVENUE, PROFIT OR DATA, OR FOR DIRECT, INDIRECT,
*  SPECIAL, CONSEQUENTIAL, INCIDENTAL OR PUNITIVE DAMAGES, HOWEVER
*  CAUSED AND REGARDLESS OF THE THEORY OF LIABILITY, ARISING OUT OF
*  THE USE OF OR INABILITY TO USE THIS SOFTWARE, EVEN IF SUN HAS
*  BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
*
*  You acknowledge that this software is not designed, licensed or
*  intended for use in the design, construction, operation or
*  maintenance of any nuclear facility.
*/

package org.mpcl.nui.treetable;

import java.util.EventObject;
import javax.swing.CellEditor;
import javax.swing.event.CellEditorListener;
import javax.swing.event.ChangeEvent;
import javax.swing.event.EventListenerList;


public class TAbstractCellEditor implements CellEditor
{

  protected EventListenerList   tEventListenerList = new EventListenerList();


  //
  //  C O N S T R U C T O R S
  //

  public void addCellEditorListener (CellEditorListener tCELL_EDITOR_LISTENER)
  {
    tEventListenerList.add (CellEditorListener.class, tCELL_EDITOR_LISTENER);
  }

  public void cancelCellEditing() {}

  public void removeCellEditorListener (CellEditorListener tCELL_EDITOR_LISTENER)
  {
    tEventListenerList.remove (CellEditorListener.class, tCELL_EDITOR_LISTENER);
  }


  //
  //  S E L E C T O R S
  //

  protected void fireEditingStopped()
  {

    Object[]      aListenerTypeListenerPair;
    ChangeEvent   tChangeEvent = null;

    //
    //  The getListenerList()  method is guaranteed to return a non-null array.
    //  Processes  the  listeners  last  to first,  notifying  those  that  are
    //  interested in this event.  The \a ChangeEvent object is created lazily.
    //
    aListenerTypeListenerPair = tEventListenerList.getListenerList();
    for (int I = aListenerTypeListenerPair.length-2; ( I >= 0 ) ;I-=2)
    {
      if ( aListenerTypeListenerPair [I] == CellEditorListener.class )
      {
        if ( tChangeEvent == null )
        {
          tChangeEvent = new ChangeEvent (this);
        }
        ((CellEditorListener) aListenerTypeListenerPair [I + 1]).editingStopped (tChangeEvent);
      }
    }

  }  // fireEditingStopped()

  protected void fireEditingCanceled()
  {

    Object[]      aListenerTypeListenerPair;
    ChangeEvent   tChangeEvent = null;

    //
    //  The getListenerList()  method is guaranteed to return a non-null array.
    //  Processes  the  listeners  last  to first,  notifying  those  that  are
    //  interested in this event.  The \a ChangeEvent object is created lazily.
    //
    aListenerTypeListenerPair = tEventListenerList.getListenerList();
    for (int I = aListenerTypeListenerPair.length-2; ( I >= 0 ) ;I-=2)
    {
      if ( aListenerTypeListenerPair [I] == CellEditorListener.class )
      {
        if ( tChangeEvent == null )
        {
          tChangeEvent = new ChangeEvent (this);
        }
        ((CellEditorListener) aListenerTypeListenerPair [I + 1]).editingCanceled (tChangeEvent);
      }        
    }

  }  // fireEditingCanceled()


  //
  //  S E L E C T O R S
  //

  public Object getCellEditorValue()
  {
    return null;
  }

  public boolean isCellEditable (EventObject tEVENT_OBJECT)
  {
    return true;
  }

  public boolean shouldSelectCell (EventObject tEVENT_OBJECT)
  {
    return false;
  }

  public boolean stopCellEditing()
  {
    return true;
  }

}  // class TAbstractCellEditor

---