/*  CenteredJDialog.java  This file is taken from the ARtool application written by Laurentiu  Cristofor   (P)2002 Laurentiu Cristofor*//*GAClust - Clustering categorical databases using genetic algorithmsCopyright (C) 2002  Dana CristoforThis program is free software; you can redistribute it and/or modifyit under the terms of the GNU General Public License as published bythe Free Software Foundation; either version 2 of the License, or (atyour option) any later version.This program is distributed in the hope that it will be useful, butWITHOUT ANY WARRANTY; without even the implied warranty ofMERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNUGeneral Public License for more details.You should have received a copy of the GNU General Public Licensealong with this program; if not, write to the Free SoftwareFoundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307USAGAClust was written by Dana Cristofor (dana@cs.umb.edu).*/import javax.swing.*;import java.awt.*;/** * A centered JDialog. Constructor comments are straight from the JDialog * source. * * @version 	1.0 * @author	Laurentiu Cristofor */public class CenteredJDialog extends JDialog{  /**   * Creates a non-modal dialog without a title and without a   * specified <code>Frame</code> owner.  A shared, hidden frame will   * be set as the owner of the dialog.   */  public CenteredJDialog()   {    super();  }  /**   * Creates a non-modal dialog without a title with the   * specified <code>Frame</code> as its owner.   *   * @param owner the <code>Frame</code> from which the dialog is displayed   */  public CenteredJDialog(Frame owner)   {    super(owner);  }  /**   * Creates a modal or non-modal dialog without a title and   * with the specified owner <code>Frame</code>.   *   * @param owner the <code>Frame</code> from which the dialog is displayed   * @param modal  true for a modal dialog, false for one that allows   *               others windows to be active at the same time   */  public CenteredJDialog(Frame owner, boolean modal)   {    super(owner, modal);  }  /**   * Creates a non-modal dialog with the specified title and   * with the specified owner frame.   *   * @param owner the <code>Frame</code> from which the dialog is displayed   * @param title  the <code>String</code> to display in the dialog's   *			title bar   */  public CenteredJDialog(Frame owner, String title)   {    super(owner, title);       }  /**   * Creates a modal or non-modal dialog with the specified title    * and the specified owner <code>Frame</code>.  All constructors   * defer to this one.   * <p>   * NOTE: Any popup components (<code>JComboBox</code>,   * <code>JPopupMenu</code>, <code>JMenuBar</code>)   * created within a modal dialog will be forced to be lightweight.   *   * @param owner the <code>Frame</code> from which the dialog is displayed   * @param title  the <code>String</code> to display in the dialog's   *			title bar   * @param modal  true for a modal dialog, false for one that allows   *               other windows to be active at the same time   */  public CenteredJDialog(Frame owner, String title, boolean modal)   {    super(owner, title, modal);  }  /**   * Creates a non-modal dialog without a title with the   * specified <code>Dialog</code> as its owner.   *   * @param owner the <code>Dialog</code> from which the dialog is displayed   */  public CenteredJDialog(Dialog owner)   {    super(owner);  }  /**   * Creates a modal or non-modal dialog without a title and   * with the specified owner dialog.   * <p>   *   * @param owner the <code>Dialog</code> from which the dialog is displayed   * @param modal  true for a modal dialog, false for one that allows   *               other windows to be active at the same time   */  public CenteredJDialog(Dialog owner, boolean modal)   {    super(owner, modal);  }  /**   * Creates a non-modal dialog with the specified title and   * with the specified owner dialog.   *   * @param owner the <code>Dialog</code> from which the dialog is displayed   * @param title  the <code>String</code> to display in the dialog's   *			title bar   */  public CenteredJDialog(Dialog owner, String title)   {    super(owner, title);       }  /**   * Creates a modal or non-modal dialog with the specified title    * and the specified owner frame.   *   * @param owner the <code>Dialog</code> from which the dialog is displayed   * @param title  the <code>String</code> to display in the dialog's   *			title bar   * @param modal  true for a modal dialog, false for one that allows   *               other windows to be active at the same time   */  public CenteredJDialog(Dialog owner, String title, boolean modal)   {    super(owner, title, modal);  }  /**   * The following method should be called to center the dialog.   */  public CenteredJDialog center()  {    if (getParent() == null)      return this;    Point p = getParent().getLocation();    Dimension p_d = getParent().getSize();    Dimension d = getSize();    int x = p.x + (p_d.width - d.width) / 2;    int y = p.y + (p_d.height - d.height) / 2;    setLocation(x, y);    return this;  }}