Override setContenst() to trigger update of spaces

git-svn-id: https://svn.apache.org/repos/asf/xmlgraphics/fop/branches/FOP_0-20-0_Alt-Design@197830 13f79535-47bb-0310-9956-ffa450edef68

src/java/org/apache/fop/area/BorderRectangle.java

@@ -22,6 +22,8 @@ package org.apache.fop.area;
 import java.awt.geom.Point2D;
 import java.awt.geom.Rectangle2D;
 
+import org.apache.fop.area.Area.AreaGeometry;
+
 /**
  * @author pbw
  * @version $Revision$ $Name$
@@ -57,6 +59,11 @@ public class BorderRectangle extends AreaFrame {
         return spaces;
     }
 
+    public void setContents(AreaGeometry contents) {
+        super.setContents(contents);
+        spaces.setContents(this);
+    }
+
     /**
      * {@inheritDoc}
      * <p>The containing <code>SpacesRectangle</code> is notified of the