swing.text.DefaultCaret.focusGained(...) does not do the selection visible.

Name: akC57697 Date: 04/02/98



The java.awt.swing.text.DefaultCaret.focusGained(...) does not
do the text selection visible.
The doc says:
" .........
 Called when the component containing the caret gains
 focus. This is implemented to set the caret to visible
 if the component is editable, and sets the selection
                                   ^^^^^^^^^^^^^^^^^^
 to visible.
 ^^^^^^^^^^^
   .........
"

The reason: "setSelectionVisible(true)" is commented in the JDK source code.

-----------------------Example--------------------
import java.awt.swing.text.*;
import java.io.*;

import java.awt.swing.JFrame;
import java.awt.swing.JTextArea;
import java.awt.swing.text.*;

public class testDefaultCaret {
    public static void main(String s[]) {
    
      JFrame f = new JFrame();
      DefaultCaret caret = new DefaultCaret();
      Document doc = new PlainDocument();
           
      try {
       doc.insertString(0,"The test string",null);
      } catch (Exception e) {}
      
      JTextComponent comp = new JTextArea(doc);
            
      caret.install(comp);
      f.getContentPane().add(comp);
      f.setBounds(25,25,100,100);
      f.setVisible(true);

      caret.setVisible(false); // Set caret invisible
      comp.setVisible(true);
      comp.setEditable(true); // Editable
      comp.setSelectionStart(0); // Make a selection
      comp.setSelectionEnd(doc.getLength());

      // The test
      caret.focusGained(new java.awt.event.FocusEvent(f,0));
                                                                   
      if (!caret.isSelectionVisible()) {
       System.out.println("The selection >"+comp.getSelectedText()+"< is not visible.");
       f.dispose();
       return;
      
      }
                            
      f.dispose();
      System.out.println( "OKAY" );
      return;
  }
}
--------------------------------------------------
Output:
The selection >The test string< is not visible.

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