javafx.scene.control.ComboBox#setButtonCell ( )源码实例Demo

private ComboBox<ConstellationColor> makeNamedCombo() {
    final ObservableList<ConstellationColor> namedColors = FXCollections.observableArrayList();
    for (final ConstellationColor c : ConstellationColor.NAMED_COLOR_LIST) {
        namedColors.add(c);
    }
    final ComboBox<ConstellationColor> namedCombo = new ComboBox<>(namedColors);
    namedCombo.setValue(ConstellationColor.WHITE);
    final Callback<ListView<ConstellationColor>, ListCell<ConstellationColor>> cellFactory = (final ListView<ConstellationColor> p) -> new ListCell<ConstellationColor>() {
        @Override
        protected void updateItem(final ConstellationColor item, boolean empty) {
            super.updateItem(item, empty);
            if (item != null) {
                final Rectangle r = new Rectangle(12, 12, item.getJavaFXColor());
                r.setStroke(Color.BLACK);
                setText(item.getName());
                setGraphic(r);
            }
        }
    };
    namedCombo.setCellFactory(cellFactory);
    namedCombo.setButtonCell(cellFactory.call(null));

    return namedCombo;
}
 

/**
 * Prompts the user to select a terminal from a provided list.
 *
 * @param terminals a list of terminals for the user to choose from
 * @return the user's selected terminal
 */
private Optional<UtilityTerminal> promptForTerminalSelection(List<UtilityTerminal> terminals) {

  // create a dialog for terminal selection
  ChoiceDialog<UtilityTerminal> utilityTerminalSelectionDialog = new ChoiceDialog<>(terminals.get(0), terminals);
  utilityTerminalSelectionDialog.initOwner(mapView.getScene().getWindow());
  utilityTerminalSelectionDialog.setTitle("Choose Utility Terminal");
  utilityTerminalSelectionDialog.setHeaderText("Junction selected. Choose the Utility Terminal to add as the trace element:");

  // override the list cell in the dialog's combo box to show the terminal name
  @SuppressWarnings("unchecked") ComboBox<UtilityTerminal> comboBox =
      (ComboBox<UtilityTerminal>) ((GridPane) utilityTerminalSelectionDialog.getDialogPane()
          .getContent()).getChildren().get(1);
  comboBox.setCellFactory(param -> new UtilityTerminalListCell());
  comboBox.setButtonCell(new UtilityTerminalListCell());

  // show the terminal selection dialog and capture the user selection
  return utilityTerminalSelectionDialog.showAndWait();
}
 

private void initComboBox(ComboBox<Integer> combo, final String[] values) {
	combo.setCellFactory((param) -> new OptionListCell(values));
	combo.setButtonCell(new OptionListCell(values));
	for (int i = 0; i < values.length; i++) {
		combo.getItems().add(i);
	}
}
 

private void initComboBox(ComboBox<Integer> combo, final String[] values) {
	combo.setCellFactory((param) -> new OptionListCell(values));
	combo.setButtonCell(new OptionListCell(values));
	for (int i = 0; i < values.length; i++) {
		combo.getItems().add(i);
	}
}
 

private Tuple2<ComboBox<PriceFeedComboBoxItem>, VBox> getMarketPriceBox() {

        VBox marketPriceBox = new VBox();
        marketPriceBox.setAlignment(Pos.CENTER_LEFT);

        ComboBox<PriceFeedComboBoxItem> priceComboBox = new JFXComboBox<>();
        priceComboBox.setVisibleRowCount(12);
        priceComboBox.setFocusTraversable(false);
        priceComboBox.setId("price-feed-combo");
        priceComboBox.setPadding(new Insets(0, -4, -4, 0));
        priceComboBox.setCellFactory(p -> getPriceFeedComboBoxListCell());
        ListCell<PriceFeedComboBoxItem> buttonCell = getPriceFeedComboBoxListCell();
        buttonCell.setId("price-feed-combo");
        priceComboBox.setButtonCell(buttonCell);

        Label marketPriceLabel = new Label();

        updateMarketPriceLabel(marketPriceLabel);

        marketPriceLabel.getStyleClass().add("nav-balance-label");
        marketPriceLabel.setPadding(new Insets(-2, 0, 4, 9));

        marketPriceBox.getChildren().addAll(priceComboBox, marketPriceLabel);

        model.getMarketPriceUpdated().addListener((observable, oldValue, newValue) ->
                updateMarketPriceLabel(marketPriceLabel));

        return new Tuple2<>(priceComboBox, marketPriceBox);
    }
 

default <T> void initComboBox(final ComboBox<T> box, final Map<T, Image> map, final T[] values) {
	final ComboBoxFactoryList<T> factory = new ComboBoxFactoryList<>(map);
	box.getItems().addAll(values);
	box.setButtonCell(factory.call(null));
	box.setCellFactory(factory);
}