Mega Code Archive
ListSelectionModel and ListSelectionListener
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/*
* Copyright (c) 1995 - 2008 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.
*
* - Redistributions 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 nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
* IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
/*
* ListSelectionDemo.java requires no other files.
*/
import java.awt.BorderLayout;
import java.awt.Dimension;
import java.awt.GridLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.BorderFactory;
import javax.swing.BoxLayout;
import javax.swing.JComboBox;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JList;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JSplitPane;
import javax.swing.JTable;
import javax.swing.JTextArea;
import javax.swing.ListSelectionModel;
import javax.swing.ScrollPaneConstants;
import javax.swing.event.ListSelectionEvent;
import javax.swing.event.ListSelectionListener;
public class ListSelectionDemo extends JPanel {
JTextArea output;
JList list;
JTable table;
String newline = "\n";
ListSelectionModel listSelectionModel;
public ListSelectionDemo() {
super(new BorderLayout());
String[] listData = { "one", "two", "three", "four", "five", "six", "seven" };
String[] columnNames = { "French", "Spanish", "Italian" };
list = new JList(listData);
listSelectionModel = list.getSelectionModel();
listSelectionModel
.addListSelectionListener(new SharedListSelectionHandler());
JScrollPane listPane = new JScrollPane(list);
JPanel controlPane = new JPanel();
String[] modes = { "SINGLE_SELECTION", "SINGLE_INTERVAL_SELECTION",
"MULTIPLE_INTERVAL_SELECTION" };
final JComboBox comboBox = new JComboBox(modes);
comboBox.setSelectedIndex(2);
comboBox.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
String newMode = (String) comboBox.getSelectedItem();
if (newMode.equals("SINGLE_SELECTION")) {
listSelectionModel
.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);
} else if (newMode.equals("SINGLE_INTERVAL_SELECTION")) {
listSelectionModel
.setSelectionMode(ListSelectionModel.SINGLE_INTERVAL_SELECTION);
} else {
listSelectionModel
.setSelectionMode(ListSelectionModel.MULTIPLE_INTERVAL_SELECTION);
}
output.append("----------" + "Mode: " + newMode + "----------"
+ newline);
}
});
controlPane.add(new JLabel("Selection mode:"));
controlPane.add(comboBox);
// Build output area.
output = new JTextArea(1, 10);
output.setEditable(false);
JScrollPane outputPane = new JScrollPane(output,
ScrollPaneConstants.VERTICAL_SCROLLBAR_ALWAYS,
ScrollPaneConstants.HORIZONTAL_SCROLLBAR_AS_NEEDED);
// Do the layout.
JSplitPane splitPane = new JSplitPane(JSplitPane.VERTICAL_SPLIT);
add(splitPane, BorderLayout.CENTER);
JPanel topHalf = new JPanel();
topHalf.setLayout(new BoxLayout(topHalf, BoxLayout.LINE_AXIS));
JPanel listContainer = new JPanel(new GridLayout(1, 1));
listContainer.setBorder(BorderFactory.createTitledBorder("List"));
listContainer.add(listPane);
topHalf.setBorder(BorderFactory.createEmptyBorder(5, 5, 0, 5));
topHalf.add(listContainer);
// topHalf.add(tableContainer);
topHalf.setMinimumSize(new Dimension(100, 50));
topHalf.setPreferredSize(new Dimension(100, 110));
splitPane.add(topHalf);
JPanel bottomHalf = new JPanel(new BorderLayout());
bottomHalf.add(controlPane, BorderLayout.PAGE_START);
bottomHalf.add(outputPane, BorderLayout.CENTER);
// XXX: next line needed if bottomHalf is a scroll pane:
// bottomHalf.setMinimumSize(new Dimension(400, 50));
bottomHalf.setPreferredSize(new Dimension(450, 135));
splitPane.add(bottomHalf);
}
/**
* Create the GUI and show it. For thread safety, this method should be
* invoked from the event-dispatching thread.
*/
private static void createAndShowGUI() {
// Create and set up the window.
JFrame frame = new JFrame("ListSelectionDemo");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
// Create and set up the content pane.
ListSelectionDemo demo = new ListSelectionDemo();
demo.setOpaque(true);
frame.setContentPane(demo);
// Display the window.
frame.pack();
frame.setVisible(true);
}
public static void main(String[] args) {
// Schedule a job for the event-dispatching thread:
// creating and showing this application's GUI.
javax.swing.SwingUtilities.invokeLater(new Runnable() {
public void run() {
createAndShowGUI();
}
});
}
class SharedListSelectionHandler implements ListSelectionListener {
public void valueChanged(ListSelectionEvent e) {
ListSelectionModel lsm = (ListSelectionModel) e.getSource();
int firstIndex = e.getFirstIndex();
int lastIndex = e.getLastIndex();
boolean isAdjusting = e.getValueIsAdjusting();
output.append("Event for indexes " + firstIndex + " - " + lastIndex
+ "; isAdjusting is " + isAdjusting + "; selected indexes:");
if (lsm.isSelectionEmpty()) {
output.append(" <none>");
} else {
// Find out which indexes are selected.
int minIndex = lsm.getMinSelectionIndex();
int maxIndex = lsm.getMaxSelectionIndex();
for (int i = minIndex; i <= maxIndex; i++) {
if (lsm.isSelectedIndex(i)) {
output.append(" " + i);
}
}
}
output.append(newline);
output.setCaretPosition(output.getDocument().getLength());
}
}
}
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