/*
* 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., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
/*
* ListSelectorDialog.java
* Copyright (C) 1999 Len Trigg
*
*/
package weka.gui;
import java.awt.Component;
import java.awt.BorderLayout;
import java.awt.Frame;
import java.awt.Container;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.JPanel;
import javax.swing.JFrame;
import javax.swing.DefaultListModel;
import javax.swing.JScrollPane;
import javax.swing.JButton;
import javax.swing.Box;
import javax.swing.BoxLayout;
import javax.swing.JDialog;
import javax.swing.JList;
/**
* A dialog to present the user with a list of items, that the user can
* make a selection from, or cancel the selection.
*
* @author Len Trigg (trigg@cs.waikato.ac.nz)
* @version $Revision: 1.1.1.1 $
*/
public class ListSelectorDialog extends JDialog {
/** Click to choose the currently selected property */
protected JButton m_SelectBut = new JButton("Select");
/** Click to cancel the property selection */
protected JButton m_CancelBut = new JButton("Cancel");
/** The list component */
protected JList m_List;
/** Whether the selection was made or cancelled */
protected int m_Result;
/** Signifies an OK property selection */
public static final int APPROVE_OPTION = 0;
/** Signifies a cancelled property selection */
public static final int CANCEL_OPTION = 1;
/**
* Create the list selection dialog.
*
* @param parentFrame the parent frame of the dialog
* @param userList the JList component the user will select from
*/
public ListSelectorDialog(Frame parentFrame, JList userList) {
super(parentFrame, "Select items", true);
m_List = userList;
m_CancelBut.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
m_Result = CANCEL_OPTION;
setVisible(false);
}
});
m_SelectBut.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
m_Result = APPROVE_OPTION;
setVisible(false);
}
});
Container c = getContentPane();
c.setLayout(new BorderLayout());
// setBorder(BorderFactory.createTitledBorder("Select a property"));
Box b1 = new Box(BoxLayout.X_AXIS);
b1.add(m_SelectBut);
b1.add(Box.createHorizontalStrut(10));
b1.add(m_CancelBut);
c.add(b1, BorderLayout.SOUTH);
c.add(new JScrollPane(m_List), BorderLayout.CENTER);
pack();
}
/**
* Pops up the modal dialog and waits for cancel or a selection.
*
* @return either APPROVE_OPTION, or CANCEL_OPTION
*/
public int showDialog() {
m_Result = CANCEL_OPTION;
int [] origSelected = m_List.getSelectedIndices();
setVisible(true);
if (m_Result == CANCEL_OPTION) {
m_List.setSelectedIndices(origSelected);
}
return m_Result;
}
/**
* Tests out the list selector from the command line.
*
* @param args ignored
*/
public static void main(String [] args) {
try {
DefaultListModel lm = new DefaultListModel();
lm.addElement("one");
lm.addElement("two");
lm.addElement("three");
lm.addElement("four");
lm.addElement("five");
JList jl = new JList(lm);
final ListSelectorDialog jd = new ListSelectorDialog(null, jl);
int result = jd.showDialog();
if (result == ListSelectorDialog.APPROVE_OPTION) {
System.err.println("Fields Selected");
int [] selected = jl.getSelectedIndices();
for (int i = 0; i < selected.length; i++) {
System.err.println("" + selected[i]
+ " " + lm.elementAt(selected[i]));
}
} else {
System.err.println("Cancelled");
}
System.exit(0);
} catch (Exception ex) {
ex.printStackTrace();
System.err.println(ex.getMessage());
}
}
}