Vaadin 7.3.2 CssLayout Memory Leak?

Hi!

I use the CssLayout class for generated columns in my table. The table is updated frequently during long period (one-two days). As the result I observe the large amount of ArrayList objects used by the CssLayout instances. The garbage collector cannot destroy such objects because of loop which you can see at this picture:


Any hints, comments?

My code looks like that:

[code]
addGeneratedColumn(STATUS, new CustomTable.ColumnGenerator() {

        private static final long serialVersionUID = 1L;

        @Override
        public Object generateCell(CustomTable source, final Object itemId, Object columnId) {
            final CssLayout layout = new CssLayout();
            if( isOnline(itemId) ) {
                layout.setStyleName("device-status-online");
            } else {
                layout.setStyleName("device-status-offline");
            }
            final Property.ValueChangeListener listener = new ValueChangeListener() {
            private static final long serialVersionUID = 1L;

            @Override
            public void valueChange(Property.ValueChangeEvent event) {
                if( isOnline(itemId) ) {
                    layout.setStyleName("device-status-online");
                } else {
                    layout.setStyleName("device-status-offline");
                }
            }};
            final Item item = source.getItem(itemId);
            if( item instanceof BeanItem ) {
                final BeanItem<?> beanItem = (BeanItem<?>) item;
                {
                    final Property<?> itemProperty = beanItem.getItemProperty("touchTime");
                    if( itemProperty instanceof Property.ValueChangeNotifier ) {
                        Property.ValueChangeNotifier notifier = (com.vaadin.data.Property.ValueChangeNotifier) itemProperty;
                        notifier.removeValueChangeListener(listener);
                        notifier.addValueChangeListener(listener);
                    }
                }
            }
            
            return layout;

[/code]When I switched on HorizontalLayout instead of CssLayout the problem disappeared.

Thanks in advance,
AnatolyS

The problem relates to https://vaadin.com/forum#!/thread/8485622