standarddialog.java

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/* ===================================================
 * JCommon : a free general purpose Java class library
 * ===================================================
 *
 * Project Info:  http://www.jfree.org/jcommon/index.html
 * Project Lead:  David Gilbert ([e-mail]);
 *
 * (C) Copyright 2000-2003, by Object Refinery Limited and Contributors.
 *
 * This library is free software; you can redistribute it and/or modify it under the terms
 * of the GNU Lesser General Public License as published by the Free Software Foundation;
 * either version 2.1 of the License, or (at your option) any later version.
 *
 * This library 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 Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License along with this
 * library; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330,
 * Boston, MA 02111-1307, USA.
 *
 * -------------------
 * StandardDialog.java
 * -------------------
 * (C) Copyright 2000-2003, by Object Refinery Limited.
 *
 * Original Author:  David Gilbert (for Object Refinery Limited);
 * Contributor(s):   -;
 *
 * $Id: StandardDialog.java,v 1.3 2003/06/12 16:54:43 mungady Exp $
 *
 * Changes (from 26-Oct-2001)
 * --------------------------
 * 26-Oct-2001 : Changed package to com.jrefinery.ui.*;
 *
 */

package org.jfree.ui;

import java.awt.Dialog;
import java.awt.Frame;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;

import javax.swing.BorderFactory;
import javax.swing.JButton;
import javax.swing.JDialog;
import javax.swing.JPanel;

/**
 * The base class for standard dialogs.
 *
 * @author David Gilbert
 */
public class StandardDialog extends JDialog implements ActionListener {

    /** Flag that indicates whether or not the dialog was cancelled. */
    private boolean cancelled;

    /**
     * Standard constructor - builds a dialog...
     *
     * @param owner  the owner.
     * @param title  the title.
     * @param modal  modal?
     */
    public StandardDialog(Frame owner, String title, boolean modal) {
        super(owner, title, modal);
        this.cancelled = false;
    }

    /**
     * Standard constructor - builds a dialog...
     *
     * @param owner  the owner.
     * @param title  the title.
     * @param modal  modal?
     */
    public StandardDialog(Dialog owner, String title, boolean modal) {
        super(owner, title, modal);
        this.cancelled = false;
    }

    /**
     * Returns a flag that indicates whether or not the dialog has been cancelled.
     *
     * @return boolean.
     */
    public boolean isCancelled() {
        return this.cancelled;
    }

    /**
     * Handles clicks on the standard buttons.
     *
     * @param event  the event.
     */
    public void actionPerformed(ActionEvent event) {
        String command = event.getActionCommand();
        if (command.equals("helpButton")) {
            // display help information
        }
        else if (command.equals("okButton")) {
            this.cancelled = false;
            hide();
        }
        else if (command.equals("cancelButton")) {
            this.cancelled = true;
            hide();
        }
    }

    /**
     * Builds and returns the user interface for the dialog.  This method is shared among the
     * constructors.
     *
     * @return the button panel.
     */
    protected JPanel createButtonPanel() {

        L1R2ButtonPanel buttons = new L1R2ButtonPanel("Help", "OK", "Cancel");

        JButton helpButton = buttons.getLeftButton();
        helpButton.setActionCommand("helpButton");
        helpButton.addActionListener(this);

        JButton okButton = buttons.getRightButton1();
        okButton.setActionCommand("okButton");
        okButton.addActionListener(this);

        JButton cancelButton = buttons.getRightButton2();
        cancelButton.setActionCommand("cancelButton");
        cancelButton.addActionListener(this);

        buttons.setBorder(BorderFactory.createEmptyBorder(4, 0, 0, 0));
        return buttons;
    }

}