private void applyValue(String property, String value) throws CoreException {
   if (fCurrentCategoryDefinition == null) return;
   if (property.equals(PROPERTY_NAME)) {
     String oldName = fCurrentCategoryDefinition.getName();
     fCurrentCategoryDefinition.setName(value);
     bringFeatures(oldName);
   } else if (property.equals(PROPERTY_TYPE)) fCurrentCategoryDefinition.setLabel(value);
   else if (property.equals(PROPERTY_DESC)) {
     if (value == null || value.length() == 0) {
       fCurrentCategoryDefinition.setDescription(null);
     } else {
       ISiteDescription siteDesc = fCurrentCategoryDefinition.getDescription();
       if (siteDesc == null) {
         siteDesc =
             fCurrentCategoryDefinition
                 .getModel()
                 .getFactory()
                 .createDescription(fCurrentCategoryDefinition);
         siteDesc.setText(value);
         fCurrentCategoryDefinition.setDescription(siteDesc);
       } else {
         siteDesc.setText(value);
       }
     }
   }
 }