Name: mgC56079 Date: 09/02/97



  The java.beans.beancontext.BeanContextSupport.needsGui() should
  return true if beanContextPeer implements interface Visibility,
  but may return false.

Here is the javadoc comment for this method:

  This method is typically called from the environment in order to determine
  if the implementor "needs" a GUI.
  The algorithm used herein tests the BeanContextPeer,
  and its current children to determine if they are either Containers,
  Components, or if they implement Visibility and return needsGui() == true.

Here is the test demonstrating the bug:

-----------DummyVisibilitySupport.java-----------
import java.beans.beancontext.BeanContextSupport;
import java.beans.Visibility;

public class DummyVisibilitySupport extends BeanContextSupport implements Visibility {
  
  public DummyVisibilitySupport() {}
  public boolean avoidingGui() {return false;}
  public void dontUseGui() {}
  public boolean needsGui() { return true;}
  public void okToUseGui() {}
}


-----------------Test.java------------------------

import DummyVisibilitySupport;
import java.beans.beancontext.BeanContextSupport;
import java.beans.beancontext.BeanContext;

public class Test extends BeanContextSupport {
      public Test(BeanContext peer) {
          super(peer);
      }

    public static void main(String args[]) {
        
        Test test = new Test(new DummyVisibilitySupport());
        if (!test.needsGui()) {
            System.out.println("needsGui() == false.");
        }
    }
}

---------Output from the test---------------------
needsGui() == false.
--------------------------------------------------

======================================================================