Notebook.java

/*      PANDA -- a simple transaction monitor

 Copyright (C) 1998-1999 Ogochan.
 2000-2003 Ogochan & JMA (Japan Medical Association).
 2002-2006 OZAWA Sakuro.

 This module is part of PANDA.

 PANDA is distributed in the hope that it will be useful, but
 WITHOUT ANY WARRANTY.  No author or distributor accepts responsibility
 to anyone for the consequences of using it or for whether it serves
 any particular purpose or works at all, unless he says so in writing.
 Refer to the GNU General Public License for full details.

 Everyone is granted permission to copy, modify and redistribute
 PANDA, but only under the conditions described in the GNU General
 Public License.  A copy of this license is supposed to have been given
 to you along with PANDA so you can know your rights and
 responsibilities.  It should be in a file named COPYING.  Among other
 things, the copyright notice and this notice must be preserved on all
 copies.
 */
package org.montsuqi.widgets;

import java.util.HashMap;
import java.util.Map;
import javax.swing.AbstractButton;
import javax.swing.JTabbedPane;
import javax.swing.event.ChangeEvent;
import javax.swing.event.ChangeListener;

/**
 * <p>
 * A class that simulates Gtk+'s Notebook widget.</p>
 *
 * <p>
 * Since Gtk+'s Notebook uses button for tabs, this component maps a dummy
 * button(NotebookDummyButton) for each tab to simulate its behavior. Dummy
 * buttons are not displayed but can react on action events.</p>
 */
public class Notebook extends JTabbedPane {

    Map<Integer, NotebookDummyButton> buttons;
    private int index;
    private int pindex;
    private boolean switchPage;

    public boolean isSwitchPage() {
        return switchPage;
    }

    public void setSwitchPage(boolean swichPage) {
        this.switchPage = swichPage;
    }

    public Notebook() {
        super();

        buttons = new HashMap<>();
        index = 0;
        pindex = 0;
        switchPage = true;

        addChangeListener(new ChangeListener() {

            @Override
            public void stateChanged(ChangeEvent e) {
                Integer selected = new Integer(getSelectedIndex());
                pindex = index;
                index = selected.intValue();
                if (buttons.containsKey(selected)) {
                    AbstractButton dummy = (AbstractButton) buttons.get(selected);
                    if (dummy != null) {
                        dummy.doClick();
                    }
                }
            }
        });
    }

    /**
     * <p>
     * Registers a dummy button to a tab.</p>
     *
     * @param button a NotebookDummyButton with an index.
     */
    public void registerTabButton(NotebookDummyButton button) {
        buttons.put(new Integer(button.getIndex()), button);
    }

    public int getPreviousSelectedIndex() {
        return pindex;
    }

    @Override
    public void setSelectedIndex(int index) {
        super.setSelectedIndex(index);
        pindex = this.index;
        this.index = index;
    }
}