Java by API/org.eclipse.swt.events/FocusListener

implements FocusListener

   <source lang="java">

import org.eclipse.swt.SWT; import org.eclipse.swt.events.FocusEvent; import org.eclipse.swt.events.FocusListener; import org.eclipse.swt.widgets.Display; import org.eclipse.swt.widgets.Shell; import org.eclipse.swt.widgets.Text; public class MainClass {

 public static void main(String[] a) {
   Display d = new Display();
   Shell s = new Shell(d);
   Text text1 = new Text(s, SWT.WRAP | SWT.BORDER);
   text1.setBounds(100, 50, 100, 20);
   text1.setTextLimit(5);
   text1.setText("12345");
   Text text2 = new Text(s, SWT.SINGLE | SWT.BORDER);
   text2.setBounds(100, 75, 100, 20);
   text2.setTextLimit(30);
   FocusListener focusListener = new FocusListener() {
     public void focusGained(FocusEvent e) {
       Text t = (Text) e.widget;
       t.selectAll();
     }
     public void focusLost(FocusEvent e) {
       Text t = (Text) e.widget;
       if (t.getSelectionCount() > 0) {
         t.clearSelection();
       }
     }
   };
   text1.addFocusListener(focusListener);
   text2.addFocusListener(focusListener);
   s.open();
   while (!s.isDisposed()) {
     if (!d.readAndDispatch())
       d.sleep();
   }
   d.dispose();
 }

}

      </source>