158         if (a == null) return null;
 159 
 160         return invokeAndWait(new Callable<AccessibleContext>() {
 161             public AccessibleContext call() throws Exception {
 162                 return a.getAccessibleContext();
 163             }
 164         }, c);
 165     }
 166 
 167     public static boolean isAccessibleChildSelected(final Accessible a, final int index, final Component c) {
 168         if (a == null) return false;
 169 
 170         return invokeAndWait(new Callable<Boolean>() {
 171             public Boolean call() throws Exception {
 172                 final AccessibleContext ac = a.getAccessibleContext();
 173                 if (ac == null) return Boolean.FALSE;
 174 
 175                 final AccessibleSelection as = ac.getAccessibleSelection();
 176                 if (as == null) return Boolean.FALSE;
 177 
 178                 return new Boolean(as.isAccessibleChildSelected(index));
 179             }
 180         }, c);
 181     }
 182 
 183     public static AccessibleStateSet getAccessibleStateSet(final AccessibleContext ac, final Component c) {
 184         if (ac == null) return null;
 185 
 186         return invokeAndWait(new Callable<AccessibleStateSet>() {
 187             public AccessibleStateSet call() throws Exception {
 188                 return ac.getAccessibleStateSet();
 189             }
 190         }, c);
 191     }
 192 
 193     public static boolean contains(final AccessibleContext ac, final AccessibleState as, final Component c) {
 194         if (ac == null || as == null) return false;
 195 
 196         return invokeAndWait(new Callable<Boolean>() {
 197             public Boolean call() throws Exception {
 198                 final AccessibleStateSet ass = ac.getAccessibleStateSet();

 158         if (a == null) return null;
 159 
 160         return invokeAndWait(new Callable<AccessibleContext>() {
 161             public AccessibleContext call() throws Exception {
 162                 return a.getAccessibleContext();
 163             }
 164         }, c);
 165     }
 166 
 167     public static boolean isAccessibleChildSelected(final Accessible a, final int index, final Component c) {
 168         if (a == null) return false;
 169 
 170         return invokeAndWait(new Callable<Boolean>() {
 171             public Boolean call() throws Exception {
 172                 final AccessibleContext ac = a.getAccessibleContext();
 173                 if (ac == null) return Boolean.FALSE;
 174 
 175                 final AccessibleSelection as = ac.getAccessibleSelection();
 176                 if (as == null) return Boolean.FALSE;
 177 
 178                 return as.isAccessibleChildSelected(index);
 179             }
 180         }, c);
 181     }
 182 
 183     public static AccessibleStateSet getAccessibleStateSet(final AccessibleContext ac, final Component c) {
 184         if (ac == null) return null;
 185 
 186         return invokeAndWait(new Callable<AccessibleStateSet>() {
 187             public AccessibleStateSet call() throws Exception {
 188                 return ac.getAccessibleStateSet();
 189             }
 190         }, c);
 191     }
 192 
 193     public static boolean contains(final AccessibleContext ac, final AccessibleState as, final Component c) {
 194         if (ac == null || as == null) return false;
 195 
 196         return invokeAndWait(new Callable<Boolean>() {
 197             public Boolean call() throws Exception {
 198                 final AccessibleStateSet ass = ac.getAccessibleStateSet();