ComboTableCellRenderer.java Source code

Introduction

Here is the source code for ComboTableCellRenderer.java

Source

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);
    }
}