java - 编辑 JTable 单元格，作为 JTree 节点

Question

我的目标是使用 JTable 作为 JTree 节点，并且能够通过双击 JTable 中的单元格来编辑它们。渲染效果很好( Jtable as a Jtree Node )，但我不知道如何编辑表中的单个单元格。如果我将树设置为可编辑，我可以使用双击编辑节点，但我想自己编辑单元格，因为用户可能似乎不愿意保留我用于渲染的数字前面的“%”。如果树未设置为可编辑，则双击不会执行任何操作。有没有简单的方法可以实现这一点？

public class TreeWithCellRenderer {

static class MyCellRenderer implements TreeCellRenderer {
    @Override
    public Component getTreeCellRendererComponent(JTree tree, Object value, boolean selected, boolean expanded,
            boolean leaf, int row, boolean hasFocus) {

        String command = (String) ((DefaultMutableTreeNode) value).getUserObject();
        final String[] params = command.split("%");
        JTable table = new JTable();

        table.setModel(new DefaultTableModel() {
            private static final long serialVersionUID = 1L;

            @Override
            public int getRowCount() {
                return 1;
            }

            @Override
            public int getColumnCount() {
                return params.length;
            }

            @Override
            public Object getValueAt(int row, int column) {
                return params[column];
            }
        });
        return table;
    }
}

private static void createAndShowGUI() {
    // Create and set up the window.
    JFrame frame = new JFrame("JTreeTutorial");
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

    // Tree components
    DefaultMutableTreeNode root = new DefaultMutableTreeNode("root");
    DefaultMutableTreeNode cmd1 = new DefaultMutableTreeNode("name %1");
    DefaultMutableTreeNode cmd2 = new DefaultMutableTreeNode("name %1 %2");
    root.add(cmd1);
    root.add(cmd2);

    JTree jTree = new JTree(root);
    //Don't like it too much, as it makes you edit the whole node, not cells
    //jTree.setEditable(true);
    jTree.setCellRenderer(new MyCellRenderer());
    JScrollPane scroolPane = new JScrollPane(jTree);
    frame.add(scroolPane);

    // Display the window.
    frame.pack();
    frame.setVisible(true);
}

public static void main(String[] args) {
    createAndShowGUI();
}

}

Answer 1

• 创建自己的 TreeCellEditor , editors and renderers concept is same, similair for JCombobBox, JList(by default non_editable JComponents), JTable and JTree

• 注意TreeCellEditor is invoked at 3rd. MouseClick

• 您的linked code is based on