Creating a Proper ComboBox Editor for a Tree : JTree Editor Renderer « Swing « Java Tutorial

1. Java Tutorial
2. Swing
3. JTree Editor Renderer

import java.awt.BorderLayout;

import javax.swing.DefaultCellEditor;
import javax.swing.JComboBox;
import javax.swing.JFrame;
import javax.swing.JScrollPane;
import javax.swing.JTree;
import javax.swing.tree.DefaultTreeCellEditor;
import javax.swing.tree.DefaultTreeCellRenderer;
import javax.swing.tree.TreeCellEditor;

public class TreeEdit {
  public static void main(String args[]) {
    JFrame frame = new JFrame();
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

    Object array[] = {Boolean.TRUE, Boolean.FALSE, "Hello"};
    JTree tree = new JTree(array);
    tree.setEditable(true);
    tree.setRootVisible(true);
    
    
    DefaultTreeCellRenderer renderer = (DefaultTreeCellRenderer)tree.getCellRenderer();
    String elements[] = { "A", "B", "C", "D"} ;
    JComboBox comboBox = new JComboBox(elements);
    comboBox.setEditable(true);
    TreeCellEditor comboEditor = new DefaultCellEditor(comboBox);
    TreeCellEditor editor = new DefaultTreeCellEditor(tree, renderer, comboEditor);
    tree.setCellEditor(editor);


    JScrollPane scrollPane = new JScrollPane(tree);
    frame.add(scrollPane, BorderLayout.CENTER);
    frame.setSize(300, 150);
    frame.setVisible(true);
  }
}

14.69.JTree Editor Renderer
	14.69.1.	Getting Default TreeCellRenderer From JTree
	14.69.2.	extends JLabel implements TreeCellRenderer
	14.69.3.	Creating a Custom Renderer
	14.69.4.	Working with Tree Tooltips: using a Tooltip Cell Renderer
	14.69.5.	Editing Tree Nodes with triple clicking
	14.69.6.	Creating a DefaultCellEditor: JTextField
	14.69.7.	Creating a DefaultCellEditor: JComboBox
	14.69.8.	Creating a DefaultCellEditor: JCheckBox
	14.69.9.	Creating a Proper ComboBox Editor for a Tree
	14.69.10.	Creating an Editor Just for Leaf Nodes
	14.69.11.	Rendering an image in a JTable column
	14.69.12.	Setting the Activation Click Count for a Table Cell Editor in a JTable Component
	14.69.13.	Using DefaultTreeCellRenderer
	14.69.14.	Changing and Removing the Default Icons in a JTree Component
	14.69.15.	Use UIManager to change the default icon for JTree
	14.69.16.	Flush the internal cache of Row height