单个JTable单元中的多个对象 [英] Multiple object in a single JTable cell

问题描述

在一个 JTable 单元中是否可以有多个对象，就像这样，我在第一行的每个单元格中都有两个 JLabels ?

Is it possible to have multiple objects inside one JTable cell looking like this where I have two JLabels in each cell on the first row?

在此示例中，我遇到的问题是我无法将任何侦听器添加到任何 JLabels ( Icons ).我的猜测是我需要更改 CellRenderer 以外的其他内容?

The problem I am having in this example is that I can't add any listeners to any JLabels(Icons). My guess is that I need to change something else then the CellRenderer?

public class JTableIcons extends JPanel {

    private DefaultTableModel model;
    private JTable table;

    public JTableIcons() {
        initModel();
        initTable();
        this.setLayout(new BorderLayout());
        this.add(table, BorderLayout.CENTER);
    }

    class MyRenderer implements TableCellRenderer {

        @Override
        public Component getTableCellRendererComponent(JTable table, Object value,
                boolean isSelected, boolean hasFocus, int row, int column) {

            JPanel panel = new JPanel();
            if (row == 0) {
                JLabel lblCol = new JLabel("Column:" + column);
                Icon icon = UIManager.getIcon("OptionPane.errorIcon");
                JLabel lblIcon = new JLabel();
                lblIcon.setIcon(icon);
                panel.add(lblIcon);
                panel.add(lblCol);
            } else {
                JLabel lbl = new JLabel("(" + row + "," + column + ")");
                panel.add(lbl);
            }
            panel.setOpaque(false);
            return panel;
        }
    }

    private void initTable() {
        table = new JTable(model);
        table.setDefaultRenderer(Object.class, new MyRenderer());
        table.setShowGrid(true);
        table.setGridColor(Color.gray);
        table.setRowHeight(80);
    }

    private void initModel() {
        String[] cols = { "", "", "" };
        Object[][] rows = { { "", "", "" }, { "", "", "" }, { "", "", "" }, { "", "", "" } };
        model = new DefaultTableModel(rows, cols);
    }

    public static void main(String[] args) {
        EventQueue.invokeLater(new Runnable() {
            @Override
            public void run() {
                JFrame f = new JFrame();
                f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
                f.add(new JTableIcons());
                f.setVisible(true);
                f.setSize(new Dimension(500, 350));
                f.setLocationRelativeTo(null);
            }
        });
    }
}

推荐答案

我想添加两个或更多对象，

I would like to add two or more objects,

不要使用两个组件，只有一个可以使用.此渲染器://stackoverflow.com/a/2834484/230513>示例实现了 Icon 接口，以利用文本和图标的灵活相对位置.必要时，将多个组件添加到合适的轻量级 Container 中，例如 JPanel .

Don't use two components, when one will do. The renderer in this example implements the Icon interface to leverage the flexible relative positioning of the text and icon. When necessary, add multiple components to a suitable lightweight Container, e.g. JPanel.

，然后对添加的对象也具有不同的侦听器.

and then also have different listeners to the added objects.

对于交互性，请使用自定义 TableCellEditor .此示例管理面板中的单选按钮.

For interactivity, use a custom TableCellEditor. This example manages radio buttons in a panel.

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