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  1. JDK
  2. JDK-4125025

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

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    • Subcomponent:
    • Resolved In Build:
      swing1.1
    • CPU:
      sparc
    • OS:
      solaris_2.5
    • Verification:
      Verified

      Description



      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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            Assignee:
            tprinzinsunw Timothy Prinzing (Inactive)
            Reporter:
            akuzminorcl Alexander Kuzmin (Inactive)
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