Here is a sample for an EditingCell which renders a different control in the cell (TextEdit field or Checkbox) depending on the type of data represented by the Cell's backing field (String or Boolean). Complete executable code is available as a gist.
For your particular example, use the same concept except query the type for either a String => TextField or ObservableList => combobox. Also, for your particular sample, ChoiceBox may be a simpler control to use than ComboBox.
class EditingCell extends TableCell<NamedProperty, Object> {
private TextField textField;
private CheckBox checkBox;
public EditingCell() {}
@Override public void startEdit() {
if (!isEmpty()) {
super.startEdit();
if (getItem() instanceof Boolean) {
createCheckBox();
setText(null);
setGraphic(checkBox);
} else {
createTextField();
setText(null);
setGraphic(textField);
textField.selectAll();
}
}
}
@Override public void cancelEdit() {
super.cancelEdit();
if (getItem() instanceof Boolean) {
setText(getItem().toString());
} else {
setText((String) getItem());
}
setGraphic(null);
}
@Override public void updateItem(Object item, boolean empty) {
super.updateItem(item, empty);
if (empty) {
setText(null);
setGraphic(null);
} else {
if (isEditing()) {
if (getItem() instanceof Boolean) {
if (checkBox != null) {
checkBox.setSelected(getBoolean());
}
setText(null);
setGraphic(checkBox);
} else {
if (textField != null) {
textField.setText(getString());
}
setText(null);
setGraphic(textField);
}
} else {
setText(getString());
setGraphic(null);
}
}
}
private void createTextField() {
textField = new TextField(getString());
textField.setMinWidth(this.getWidth() - this.getGraphicTextGap()* 2);
textField.focusedProperty().addListener(new ChangeListener<Boolean>() {
@Override public void changed(ObservableValue<? extends Boolean> observable, Boolean oldValue, Boolean newValue) {
if (!newValue) {
commitEdit(textField.getText());
}
}
});
}
private void createCheckBox() {
checkBox = new CheckBox();
checkBox.setSelected(getBoolean());
checkBox.setMinWidth(this.getWidth() - this.getGraphicTextGap()* 2);
checkBox.focusedProperty().addListener(new ChangeListener<Boolean>() {
@Override public void changed(ObservableValue<? extends Boolean> observable, Boolean oldValue, Boolean newValue) {
if (!newValue) {
commitEdit(checkBox.isSelected());
}
}
});
}
private String getString() {
return getItem() == null ? "" : getItem().toString();
}
private Boolean getBoolean() {
return getItem() == null ? false : (Boolean) getItem();
}
}