multipleselectiontest.java

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// Fig. 13.15: MultipleSelectionTest.java
// Copying items from one List to another.
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;

public class MultipleSelectionTest extends JFrame {
   private JList colorList, copyList;
   private JButton copyButton;
   private final String colorNames[] = { "Black", "Blue", "Cyan", 
      "Dark Gray", "Gray", "Green", "Light Gray", "Magenta", "Orange", 
      "Pink", "Red", "White", "Yellow" };

   // set up GUI
   public MultipleSelectionTest()
   {
      super( "Multiple Selection Lists" );

      // get content pane and set its layout
      Container container = getContentPane();
      container.setLayout( new FlowLayout() );

      // set up JList colorList
      colorList = new JList( colorNames );
      colorList.setVisibleRowCount( 5 );
      colorList.setSelectionMode( 
         ListSelectionModel.MULTIPLE_INTERVAL_SELECTION );
      container.add( new JScrollPane( colorList ) );

      // create copy button and register its listener
      copyButton = new JButton( "Copy >>>" );
      copyButton.addActionListener(

         new ActionListener() {  // anonymous inner class 

            // handle button event
            public void actionPerformed( ActionEvent event )
            {
               // place selected values in copyList
               copyList.setListData( colorList.getSelectedValues() );
            }

         } // end anonymous inner class

      ); // end call to addActionListener

      container.add( copyButton );

      // set up JList copyList
      copyList = new JList( );
      copyList.setVisibleRowCount( 5 );
      copyList.setFixedCellWidth( 100 );
      copyList.setFixedCellHeight( 15 );
      copyList.setSelectionMode( 
         ListSelectionModel.SINGLE_INTERVAL_SELECTION );
      container.add( new JScrollPane( copyList ) );

      setSize( 300, 130 );
      setVisible( true );

   } // end constructor MultipleSelectionTest

   public static void main( String args[] )
   { 
      MultipleSelectionTest application = new MultipleSelectionTest();
      application.setDefaultCloseOperation( JFrame.EXIT_ON_CLOSE );
   }

} // end class MultipleSelectionTest