Question

我想在带有超链接的表中只显示一个列单元格，单击它会在新窗口中显示一些文本。请帮帮我这个

Answer 1

您需要实现自定义单元格类型才能执行此操作：

public class HyperlinkTableCell<S, T> extends TableCell<S, T> {

    private final Hyperlink link;
    private final Set<T> visitedLinks;
    private final Function<? super T, String> converter;

    private HyperlinkTableCell(Set<T> visitedLinks, final Consumer<? super T> handler, Function<? super T, String> converter) {
        link = new Hyperlink();
        if (handler != null) {
            link.setOnAction(evt -> {
                T item = getItem();
                handler.accept(item);

                // keep track of visited links
                visitedLinks.add(item);
            });
        }
        this.visitedLinks = visitedLinks;
        this.converter = converter;
    }

    @Override
    protected void updateItem(T item, boolean empty) {
        super.updateItem(item, empty);

        if (empty || item == null) {
            setGraphic(null);
        } else {
            setGraphic(link);
            link.setText(converter.apply(item));

            // restore visited state
            link.setVisited(visitedLinks.contains(item));
        }
    }

    public static <U, V> Callback<TableColumn<U, V>, TableCell<U, V>> forTableColumn(
            final Consumer<? super V> handler,
            final Function<? super V, String> converter) {
        final Set<V> set = new HashSet<>();
        return c -> new HyperlinkTableCell<>(set, handler, converter);
    }

    public static <U, V> Callback<TableColumn<U, V>, TableCell<U, V>> forTableColumn(
            final Consumer<? super V> handler) {
        return forTableColumn(handler, item -> item == null ? "" : item.toString());
    }

}

用法

column.setCellFactory(HyperlinkTableCell.forTableColumn(item -> {
    Alert alert = new Alert(Alert.AlertType.INFORMATION);
    alert.setContentText("You clicked " + item);
    alert.show();
}));

javafx：在列中显示超链接并打开一个新窗口

1 个答案:

用法