Jtable作为Jtree节点 [英] Jtable as a Jtree Node

问题描述

我知道您可以创建

  import java.awt。*; 
 import javax.swing。*; 
 import javax.swing.table.DefaultTableModel; 
 import javax.swing.tree。*; 
 
公共类TreeWithTableRenderer扩展JFrame {
 
 private static final long serialVersionUID = 1L; 
私有JTree树; 
 
 public TreeWithTableRenderer（）{
 DefaultMutableTreeNode AA1 = new DefaultMutableTreeNode（AA1）; 
 DefaultMutableTreeNode AA2 = new DefaultMutableTreeNode（AA2）; 
 DefaultMutableTreeNode A = new DefaultMutableTreeNode（A）; 
 A.add（AA1）; 
 A.add（AA2）; 
 DefaultMutableTreeNode BB1 = new DefaultMutableTreeNode（BB1）; 
 DefaultMutableTreeNode BB2 = new DefaultMutableTreeNode（BB2）; 
 DefaultMutableTreeNode B = new DefaultMutableTreeNode（B）; 
 B.add（BB1）; 
 B.add（BB2）; 
 DefaultMutableTreeNode CC1 = new DefaultMutableTreeNode（CC1）; 
 DefaultMutableTreeNode CC2 = new DefaultMutableTreeNode（CC2）; 
 DefaultMutableTreeNode C = new DefaultMutableTreeNode（C）; 
 C.add（CC1）; 
 C.add（CC2）; 
 DefaultMutableTreeNode root = new DefaultMutableTreeNode（root）; 
 root.add（A）; 
 root.add（B）; 
 root.add（C）; 
 tree = new JTree（root）; 
 tree.setCellRenderer（new MyTableInTreeCellRenderer（））; 
 tree.setRowHeight（0）; 
 JScrollPane jsp = new JScrollPane（tree）; 
 setDefaultCloseOperation（JFrame.EXIT_ON_CLOSE）; 
 add（jsp，BorderLayout.CENTER）; 
 pack（）; 
 setLocationRelativeTo（null）; 
} 
 
类MyTableInTreeCellRenderer扩展JPanel实现TreeCellRenderer {
 
 private static final long serialVersionUID = 1L; 
私有JTable表; 
 
 public MyTableInTreeCellRenderer（）{
 super（new BorderLayout（））; 
 table = new JTable（）; 
 JScrollPane scrollPane = new JScrollPane（table）; 
 add（scrollPane）; 
} 
 
 public Component getTreeCellRendererComponent（JTree tree，Object value，
 boolean selected，boolean expanded，boolean leaf，int row，boolean hasFocus）{
 final String v =（String）（（DefaultMutableTreeNode）value）。getUserObject（）; 
 table.setModel（new DefaultTableModel（）{
 
 private static final long serialVersionUID = 1L; 
 
 @Override 
 public int getRowCount（）{
返回2; 
} 
 
 @Override 
 public int getColumnCount（）{
返回2; 
} 
 
 @Override 
 public Object getValueAt（int row，int column）{
 return v +：+ row +：+ column; 
} 
}）; 
 table.setPreferredScrollableViewportSize（table.getPreferredSize（））; 
返回此; 
} 
} 
 
 public static void main（String [] args）抛出异常{
 SwingUtilities.invokeLater（new Runnable（）{
 
 public void run（）{
 new TreeWithTableRenderer（）。setVisible（true）; 
} 
}）; 
} 
} 
  

I know you can create a table and add a JTree as a column. But what I want to do is the complete opposite.

Check the image and tell me if this is possible. Thanks!

UPDATE:

By using MKorbel's code and by randomizing the number of columns with the following code:

@Override
public int getColumnCount() {
    int i = (int) (Math.random( )* 10.0);
    if (i%2 ==0)
        return 2;
    else
        return 3;
}

I was able to get the following image:

解决方案

1) I didn't solve isLeaf() in Renderer and Editor somehow

2) if I put JScrollPane with JTable to the Node directly, (without using JPanel as parent) then JTree View isn't correctly rendered after start_up for more info please see my question Put JTable in the JTree

import java.awt.*;
import javax.swing.*;
import javax.swing.table.DefaultTableModel;
import javax.swing.tree.*;

public class TreeWithTableRenderer extends JFrame {

    private static final long serialVersionUID = 1L;
    private JTree tree;

    public TreeWithTableRenderer() {
        DefaultMutableTreeNode AA1 = new DefaultMutableTreeNode("AA1");
        DefaultMutableTreeNode AA2 = new DefaultMutableTreeNode("AA2");
        DefaultMutableTreeNode A = new DefaultMutableTreeNode("A");
        A.add(AA1);
        A.add(AA2);
        DefaultMutableTreeNode BB1 = new DefaultMutableTreeNode("BB1");
        DefaultMutableTreeNode BB2 = new DefaultMutableTreeNode("BB2");
        DefaultMutableTreeNode B = new DefaultMutableTreeNode("B");
        B.add(BB1);
        B.add(BB2);
        DefaultMutableTreeNode CC1 = new DefaultMutableTreeNode("CC1");
        DefaultMutableTreeNode CC2 = new DefaultMutableTreeNode("CC2");
        DefaultMutableTreeNode C = new DefaultMutableTreeNode("C");
        C.add(CC1);
        C.add(CC2);
        DefaultMutableTreeNode root = new DefaultMutableTreeNode("root");
        root.add(A);
        root.add(B);
        root.add(C);
        tree = new JTree(root);
        tree.setCellRenderer(new MyTableInTreeCellRenderer());
        tree.setRowHeight(0);
        JScrollPane jsp = new JScrollPane(tree);
        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        add(jsp, BorderLayout.CENTER);
        pack();
        setLocationRelativeTo(null);
    }

    class MyTableInTreeCellRenderer extends JPanel implements TreeCellRenderer {

        private static final long serialVersionUID = 1L;
        private JTable table;

        public MyTableInTreeCellRenderer() {
            super(new BorderLayout());
            table = new JTable();
            JScrollPane scrollPane = new JScrollPane(table);
            add(scrollPane);
        }

        public Component getTreeCellRendererComponent(JTree tree, Object value,
                boolean selected, boolean expanded, boolean leaf, int row, boolean hasFocus) {
            final String v = (String) ((DefaultMutableTreeNode) value).getUserObject();
            table.setModel(new DefaultTableModel() {

                private static final long serialVersionUID = 1L;

                @Override
                public int getRowCount() {
                    return 2;
                }

                @Override
                public int getColumnCount() {
                    return 2;
                }

                @Override
                public Object getValueAt(int row, int column) {
                    return v + ":" + row + ":" + column;
                }
            });
            table.setPreferredScrollableViewportSize(table.getPreferredSize());
            return this;
        }
    }

    public static void main(String[] args) throws Exception {
        SwingUtilities.invokeLater(new Runnable() {

            public void run() {
                new TreeWithTableRenderer().setVisible(true);
            }
        });
    }
}

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