// add a listener that is ensuring to keep the selection in the
                // viewport for 100ms
                // this is necessary for keeping the cell in the viewport if
                // automatically resize events are generated (see Bug 411670)
                if (this.resizeEventHandler == null) {
                    this.resizeEventHandler = new KeepRowInsideViewportEventHandler(scrollableRowPosition);
                    registerEventHandler(this.resizeEventHandler);
                    Display.getCurrent().timerExec(100, new Runnable() {
                        @Override
                        public void run() {
                            unregisterEventHandler(ViewportLayer.this.resizeEventHandler);
                            ViewportLayer.this.resizeEventHandler = null;
                        }
                    });
                }