Editing Table Cells: JComboBox As Table Cell Renderer : JTable Renderer Editor « Swing « Java Tutorial

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

import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.Component;

import javax.swing.DefaultCellEditor;
import javax.swing.DefaultListCellRenderer;
import javax.swing.ImageIcon;
import javax.swing.JComboBox;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JList;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.ListCellRenderer;
import javax.swing.table.AbstractTableModel;
import javax.swing.table.DefaultTableCellRenderer;
import javax.swing.table.TableCellEditor;
import javax.swing.table.TableCellRenderer;
import javax.swing.table.TableColumn;
import javax.swing.table.TableModel;

class ComboTableCellRenderer implements ListCellRenderer, TableCellRenderer {
  DefaultListCellRenderer listRenderer = new DefaultListCellRenderer();

  DefaultTableCellRenderer tableRenderer = new DefaultTableCellRenderer();

  private void configureRenderer(JLabel renderer, Object value) {
    if ((value != null) && (value instanceof Color)) {
      renderer.setText(value.toString());
      renderer.setBackground((Color)value);
    } else {
      renderer.setText((String) value);
    }
  }

  public Component getListCellRendererComponent(JList list, Object value, int index,
      boolean isSelected, boolean cellHasFocus) {
    listRenderer = (DefaultListCellRenderer) listRenderer.getListCellRendererComponent(list, value,
        index, isSelected, cellHasFocus);
    configureRenderer(listRenderer, value);
    return listRenderer;
  }

  public Component getTableCellRendererComponent(JTable table, Object value, boolean isSelected,
      boolean hasFocus, int row, int column) {
    tableRenderer = (DefaultTableCellRenderer) tableRenderer.getTableCellRendererComponent(table,
        value, isSelected, hasFocus, row, column);
    configureRenderer(tableRenderer, value);
    return tableRenderer;
  }
}

class ColorTableModel extends AbstractTableModel {

  Object rowData[][] = { { "1", Color.RED },
      { "2", Color.BLUE },
      { "3", Color.GREEN },
      { "4", Color.MAGENTA },
      { "5", Color.PINK }, };

  String columnNames[] = { "English","Color" };

  public int getColumnCount() {
    return columnNames.length;
  }

  public String getColumnName(int column) {
    return columnNames[column];
  }

  public int getRowCount() {
    return rowData.length;
  }

  public Object getValueAt(int row, int column) {
    return rowData[row][column];
  }

  public Class getColumnClass(int column) {
    return (getValueAt(0, column).getClass());
  }

  public void setValueAt(Object value, int row, int column) {
    rowData[row][column] = value;
  }

  public boolean isCellEditable(int row, int column) {
    return (column != 0);
  }
}

public class EditableColorColumn {

  public static void main(String args[]) {
    Color choices[] = { Color.RED, Color.ORANGE, Color.YELLOW, Color.GREEN, Color.BLUE,
        Color.MAGENTA };
    ComboTableCellRenderer renderer = new ComboTableCellRenderer();
    JComboBox comboBox = new JComboBox(choices);
    comboBox.setRenderer(renderer);
    
    TableCellEditor editor = new DefaultCellEditor(comboBox);

    JFrame frame = new JFrame("Editable Color Table");
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    TableModel model = new ColorTableModel();
    JTable table = new JTable(model);
    TableColumn column = table.getColumnModel().getColumn(1);
    column.setCellRenderer(renderer);
    column.setCellEditor(editor);

    JScrollPane scrollPane = new JScrollPane(table);
    frame.add(scrollPane, BorderLayout.CENTER);
    frame.setSize(400, 150);
    frame.setVisible(true);
  }
}

14.60.JTable Renderer Editor
	14.60.1.	Get Default cell Renderer
	14.60.2.	Get Default Cell Editor
	14.60.3.	Default Editors and Renderers
	14.60.4.	Rendering Table Cells: To install the renderer as the default renderer for the JTable for Object.class
	14.60.5.	implements TableCellRenderer
	14.60.6.	extends DefaultCellEditor
	14.60.7.	Cell Renderer for the Gender Column
	14.60.8.	Demonstrates the editable property of Swing tables.
	14.60.9.	An Editor for the Gender Column
	14.60.10.	ColorChooserEditor
	14.60.11.	Using a JComboBox in a Cell in a JTable Component
	14.60.12.	Editing Table Cells: JComboBox As Table Cell Renderer
	14.60.13.	Using a List JSpinner as a Cell Editor in a JTable Component
	14.60.14.	Using default Boolean value cell editor and renderer
	14.60.15.	Creating a Class-Based Custom Cell Renderer in a JTable Component
	14.60.16.	Creating a Custom Cell Renderer in a JTable Component
	14.60.17.	Preventing Invalid Values in a Cell in a JTable Component
	14.60.18.	Using Built-In Cell Renderers and Editors in a JTable Component
	14.60.19.	Save the current value in the cell being edited and stops the editing process
	14.60.20.	Discard any changes made by the user and stops the editing process