Name: rk38400 Date: 05/15/98


Why is there no border around a JTextArea in Windows and Motif L&F when
there is a border around JTextFields?
Is it a bug or intentional?
Metal L&F has borders on both.

Code example:

class Windows extends WindowsLookAndFeel
{
  public boolean isSupportedLookAndFeel()
  {
    return true;
  }
}



public class bug9
{
  public static void main (String argv[]) throws ClassNotFoundException, InstantiationException, IllegalAccessException,
UnsupportedLookAndFeelException
  {
    JFrame frame = new JFrame("Bug");

    // Comment and uncomment to select L&F
    UIManager.setLookAndFeel(new Windows());
    //UIManager.setLookAndFeel(new com.sun.java.swing.plaf.motif.MotifLookAndFeel());
    //UIManager.setLookAndFeel(new com.sun.java.swing.plaf.metal.MetalLookAndFeel());

    // Get the top level container
    Container contentPane = frame.getContentPane();
    contentPane.setLayout(new BorderLayout());
    
    JTextArea textarea = new JTextArea("Area");
    JTextField textfield = new JTextField("Field");

    contentPane.add(textarea, "North");
    contentPane.add(textfield, "South");

    frame.setSize(200,200);
    frame.show();
  }

}
(Review ID: 30369)
======================================================================


erik.larsen@Eng 1998-05-29
Compile these two classes and run "java Test".
None of the JTextFields have borders except
the one where it is set explicitly.

Test.java----------------------------
import com.sun.java.swing.*;

public class Test
{
   public Test()
   {
      String lf = UIManager.getSystemLookAndFeelClassName();

      if ( lf != null )
      {
         try
         {
            UIManager.setLookAndFeel( "com.sun.java.swing.plaf.motif.MotifLookAn
dFeel" );
         }
         catch ( Exception ex )
         {
            ex.printStackTrace();
         }
      }

      MyFrame mf = new MyFrame();
      mf.setSize( 400, 200 );
      mf.show();
   }

   public static void main( String args[] )
   {
      new Test();
   }
}

MyFrame.java-------------------------------
import com.sun.java.swing.*;
import com.sun.java.swing.border.*;
import com.sun.java.swing.text.*;
import com.sun.java.swing.event.*;
import java.awt.*;
import java.util.*;
import java.awt.event.*;

public class MyFrame extends JFrame implements
       DocumentListener
{
   JPanel mPanel;

   public MyFrame()
   {
      setTitle( "JTextField1" );
      
      // Store the content pane in a variable for easier
      // access.

      mPanel = (JPanel)getContentPane();

      // Components will all be added to this panel.

      mPanel.setLayout( new BoxLayout( mPanel,
                        BoxLayout.Y_AXIS ) );
      
      // Leave empty space around the edge of the content
      // pane.
      
      mPanel.setBorder( new EmptyBorder( 10, 10, 10, 10 ) );
      
      // The first label/text field combination.
      
      {
         Box pane = Box.createHorizontalBox();
         
         JLabel lbl =
               new JLabel( "Set text in constructor: " );
         pane.add( lbl );
         
         // Create the JTextField, specifying text in the
         // constructor.
         
         JTextField t1 =
                new JTextField( "Put in by constructor" );
         
         // Add the text field to the box.
         
         pane.add( t1 );
         
         // Add the box to the content pane, and pad
         // between it and the next.
         
         mPanel.add( pane );
         mPanel.add( Box.createVerticalGlue() );
      }

      // The second label/text field combination.
      
      {
         Box pane = Box.createHorizontalBox();
         
         JLabel lbl =
                new JLabel( "Set text with setText(): " );
         pane.add( lbl );
         
         // Create an empty text field.
         
         JTextField t1 = new JTextField();
         
         // Set the text field's contents.
         
         t1.setText( "Here is text" );

         // Add the text field to the box.
         
         pane.add( t1 );
         
         // Add the box to the content pane and leave some
         // space between it and the next.
         
         mPanel.add( pane );
         mPanel.add( Box.createVerticalGlue() );
      }

      // The third label/text field combination.
      
      {
         Box pane = Box.createHorizontalBox();
         
         JLabel lbl =
                new JLabel( "Changed font and colors: " );
         pane.add( lbl );
         
         // Create the text field and give it some text.
         
         JTextField t1 = new JTextField(
                       "See the font and color changes" );
         
         // Set the font.
         
         t1.setFont( new Font( "TimesRoman",
                               Font.ITALIC, 18 ) );
         
         // Set the text color.
         
         t1.setForeground( Color.red );
         
         // Set the background color.
         
         t1.setBackground( Color.green );
         
         // Add the text field to the box.
         
         pane.add( t1 );
         
         // Add the box to the content pane and leave some
         // space.
         
         mPanel.add( pane );
         mPanel.add( Box.createVerticalGlue() );
      }

      // The fourth label/text field combination.
      
      {
         Box pane = Box.createHorizontalBox();
         
         JLabel lbl =
                 new JLabel( "Ctrl-C cuts selection: " );
         pane.add( lbl );
         
         // Create a text field and give it some text.
         
         JTextField t1 = new JTextField(
                         "Select text and press Ctrl-C" );
         
         // Get the text field's keymap.
         
         Keymap map = t1.getKeymap();
         
         // Get the Ctrl-C keystroke.
         
         KeyStroke cut = KeyStroke.getKeyStroke(
                         KeyEvent.VK_C,
                         ActionEvent.CTRL_MASK, false );
         
         // Create an instance of the action that will cut
         // selected text.
         
         CutAction cutAction = new CutAction();
         
         // Put the keystroke/action pair into the keymap.
         
         map.addActionForKeyStroke( cut, cutAction );
         
         // Put the keymap back in the text field.
         
         t1.setKeymap( map );
         
         // Add the text field to the box.
         
         pane.add( t1 );
         
         // Add the box to the content pane and leave some
         // space.
         
         mPanel.add( pane );
         mPanel.add( Box.createVerticalGlue() );
      }

      // The fifth label/text field combination.
      
      {
         Box pane = Box.createHorizontalBox();
         
         JLabel lbl = new JLabel( "Changed border: " );
         pane.add( lbl );
         
         // Create a text field and give it some text.
         
         JTextField t1 = new JTextField(
                                "See the border change" );
         
         // Change the border.
         
         t1.setBorder( new BevelBorder(
                                    BevelBorder.RAISED ) );
         
         // Add the text field to the box.
         
         pane.add( t1 );
         
         // Add the box to the content pane and leave some
         // space.
         
         mPanel.add( pane );
         mPanel.add( Box.createVerticalGlue() );
      }

      // The sixth label/text field combination.
      
      {
         Box pane = Box.createHorizontalBox();
         
         JLabel lbl =
                new JLabel( "Tracking DocumentEvents: " );
         pane.add( lbl );
         
         // Create a text field and give it some text.
         
         JTextField t1 = new JTextField(
             "Type or delete to generate DocumentEvents" );
         
         // Make it so this class is notified when text is
         // inserted into or removed from the text field.
         
         t1.getDocument().addDocumentListener( this );
         
         // Add the text field to the box.
         
         pane.add( t1 );
         
         // Add the box to the content pane.
         
         mPanel.add( pane );
      }
   }

   // This is called when attributes change in the document.
   // This won't generally happen in a PlainDocument.
   
   public void changedUpdate( DocumentEvent e )
   {
      System.out.println( "Changed: " + e );
   }

   // This is called when text is inserted into a document.
   
   public void insertUpdate( DocumentEvent e )
   {
      System.out.println( "Inserted" );
   }

   // This is called when text is deleted from a document.
   
   public void removeUpdate( DocumentEvent e )
   {
      System.out.println( "Removed" );
   }

   // This action cuts the selected text (if any) from a
   // JTextField.
   
   private class CutAction extends AbstractAction
   {
      public void actionPerformed(ActionEvent e)
      {
         JTextField tf = (JTextField)e.getSource();
         tf.cut();
      }
   }
}