Name: tb29552 Date: 10/16/98


// JDK 1.2beta3 and Swing 1.0.3

// JTable.clearSelection() clears the selections but then
// selects the first item (and generates the corresponding event).
// If there already are no selections then it does not do this.
// I can clear the selections manually by using ctrl-mousebutton.

// I have also noticed a similar problem switching between
// two TableModels using JTable.setModel().

import java.awt.*;
import java.awt.event.*;
import com.sun.java.swing.*;
import com.sun.java.swing.event.*;
import com.sun.java.swing.table.*;

class Test extends JTable {
  class LSListener implements ListSelectionListener {
    public void valueChanged(ListSelectionEvent event) {
      if (Test.this.getSelectedRowCount() > 0)
System.out.println("* " + event);
      else
System.out.println("X " + event);
    }
  }

  class TM extends AbstractTableModel {
    private final String[] names = { "foo", "bar" };
    private final String[][] table =
    {
      { "aaa", "one" } ,
      { "bbb", "two" } ,
      { "ccc", "three" } ,
      { "ddd", "four" } ,
      { "eee", "five" }
    } ;
    public int getColumnCount() { return names.length; }
    public int getRowCount() { return table.length; }
    public Object getValueAt(int r, int c) { return table[r][c]; }
    public String getColumnName(int c) { return names[c]; }
    public Class getColumnClass(int c) { return String.class; }
    public boolean isCellEditable(int r, int c) { return false; }
  };
  public Test() {
    TM tm = new TM();
    setModel(tm);
    getSelectionModel().addListSelectionListener(new LSListener());
  }
  static public void main(String argv[]) {
    final Test test = new Test();
    JFrame f = new JFrame("Test");
    JMenuBar menuBar = new JMenuBar();
    JMenu menu = (JMenu)menuBar.add(new JMenu("File"));
    JMenuItem clear = (JMenuItem)menu.add(new JMenuItem("Clear Selections"));
    clear.addActionListener(new ActionListener() {
      public void actionPerformed(ActionEvent e) {
test.clearSelection();
      }});
    f.setJMenuBar(menuBar);
    f.getContentPane().add(new JScrollPane(test), BorderLayout.CENTER);
    f.setSize(200,200);
    f.setVisible(true);
  }
}
(Review ID: 39189)
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