Ghost items in javafx ListView with custom ListCell

Question

I try to view a custom object in a ListView using a custom ListCell. As an example to demonstrate the problem I chose java.util.File. Also for demonstration pur

Answer 1

You never set the disable property back to false. You need to do this for empty cells. The following could happen to a Cell:

1. a item is added to the Cell and the cell is disabled
2. the item is removed from the Cell, the Cell becomes empty, but it remains disabled.

In general when a Cell becomes empty, any changes done to the Cell when an item was added should be undone.

Furthermore you should avoid recreating the TextFields every time a new item is assigned to a Cell.

listView.setCellFactory(column -> {
    return new ListCell<File>() {

        private final TextField textField = new TextField();

        protected void updateItem(File item, boolean empty) {
            super.updateItem(item, empty);

            if (item == null || empty) {
                setDisable(false);
                setGraphic(null);
            } else {
                setDisable(true);
                textField.setText(item.getName());
                setGraphic(textField);
            }
        }
    };
});