What this is

This file is part of the Tame Swing collection that we have compiled. All of the Java source code in these examples was created by Nobuo Tamemasa. As these examples have become hard to find on the internet, we have put them in one place here, supported by minimal advertising. In time we will include images of each running sample Java/Swing application.

The intent of having these files here is to help you learn Java and Swing by example, and Tame certainly created some terrific examples of the power of the Swing framework.

Other links

Keywords/tags

java, swing, JTable, renderer, cell, component, many, multi, multiple, JLabel, JCheckBox, JComboBox, JTextField, column, row, custom, icon, image, animated, model, TableModel, example, sample, source

The source code

/* (swing1.1beta3) */
package tame.examples;

import java.awt.Component;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import java.util.EventObject;

import javax.swing.DefaultCellEditor;
import javax.swing.JCheckBox;
import javax.swing.JComboBox;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.JTextField;
import javax.swing.event.CellEditorListener;
import javax.swing.table.DefaultTableCellRenderer;
import javax.swing.table.DefaultTableModel;
import javax.swing.table.TableCellEditor;

/**
@author Nobuo Tamemasa
@version 1.0 11/09/98
*/
public class MultiComponentTable extends JFrame {

  public MultiComponentTable(){
    super("MultiComponent Table");

    DefaultTableModel dm = new DefaultTableModel() {
      public boolean isCellEditable(int row, int column) {
        if (column == 0) {
          return true;
        }
        return false;
      }
    };
    dm.setDataVector(
      new Object[][]{
        {new ComboString("true") ,"ComboString","JLabel"   ,"JComboBox"},
        {new ComboString("false"),"ComboString","JLabel"   ,"JComboBox"},
        {new Boolean(true)       ,"Boolean"    ,"JCheckBox","JCheckBox"},
        {new Boolean(false)      ,"Boolean"    ,"JCheckBox","JCheckBox"},
        {"true"                  ,"String"     ,"JLabel"   ,"JTextField"},
        {"false"                 ,"String"     ,"JLabel"   ,"JTextField"}},
      new Object[]{"Component","Data","Renderer","Editor"});

    JTable table = new JTable(dm);
    table.getColumn("Component").setCellRenderer(
      new MultiRenderer());
    table.getColumn("Component").setCellEditor(
      new MultiEditor());

    JScrollPane scroll = new JScrollPane(table);
    getContentPane().add( scroll );
    setSize( 400, 160 );
    setVisible(true);
  }

  public static void main(String[] args) {
    MultiComponentTable frame = new MultiComponentTable();
    frame.addWindowListener( new WindowAdapter() {
      public void windowClosing( WindowEvent e ) {
        System.exit(0);
      }
    });
  }
}

/**
@author Nobuo Tamemasa
@version 1.0 11/09/98
*/
class ComboString {
  String str;
  ComboString(String str) {
    this.str = str;
  }
  public String toString() {
    return str;
  }
}

/**
@author Nobuo Tamemasa
@version 1.0 11/09/98
*/
class MultiRenderer extends DefaultTableCellRenderer {
  JCheckBox checkBox = new JCheckBox();

  public Component getTableCellRendererComponent(
                     JTable table, Object value,
                     boolean isSelected, boolean hasFocus,
                     int row, int column) {
    if (value instanceof Boolean) {                    // Boolean
      checkBox.setSelected(((Boolean)value).booleanValue());
      checkBox.setHorizontalAlignment(JLabel.CENTER);
      return checkBox;
    }
    String str = (value == null) ? "" : value.toString();
    return super.getTableCellRendererComponent(
         table,str,isSelected,hasFocus,row,column);
  }
}

/**
@author Nobuo Tamemasa
@version 1.0 11/09/98
*/
class MultiEditor implements TableCellEditor {
  private final static int      COMBO = 0;
  private final static int    BOOLEAN = 1;
  private final static int     STRING = 2;
  private final static int NUM_EDITOR = 3;
  DefaultCellEditor[] cellEditors;
  JComboBox comboBox;
  int flg;

  public MultiEditor() {
    cellEditors = new DefaultCellEditor[NUM_EDITOR];
    //----------------------------------------------------
    comboBox = new JComboBox();
    comboBox.addItem("true");
    comboBox.addItem("false");
    cellEditors[COMBO]   = new DefaultCellEditor(comboBox);
    //----------------------------------------------------
    JCheckBox checkBox   = new JCheckBox();
    checkBox.setHorizontalAlignment(JLabel.CENTER);
    cellEditors[BOOLEAN] = new DefaultCellEditor(checkBox);
    //----------------------------------------------------
    JTextField textField = new JTextField();
    cellEditors[STRING]  = new DefaultCellEditor(textField);
    //----------------------------------------------------
    flg = COMBO;
  }

  public Component getTableCellEditorComponent(JTable table, Object value,
              boolean isSelected, int row, int column) {
    System.err.println("getTableCellEditorComponent called:");
    System.err.println("   isSelected: " + isSelected);
    System.err.println("   row: " + row);
    System.err.println("   col: " + column);
    if (value instanceof ComboString) {                       // ComboString
      System.err.println("   ComboString");
      flg = COMBO;
      String str = (value == null) ? "" : value.toString();
      return cellEditors[COMBO].getTableCellEditorComponent(
                       table, str,   isSelected, row, column);
    } else if (value instanceof Boolean) {                    // Boolean
      System.err.println("   Boolean");
      flg = BOOLEAN;
      return cellEditors[BOOLEAN].getTableCellEditorComponent(
                       table, value, isSelected, row, column);
    } else if (value instanceof String) {                     // String
      System.err.println("   String");
      flg = STRING;
      return cellEditors[STRING].getTableCellEditorComponent(
                       table, value, isSelected, row, column);
    }
    else {
      System.err.println("   Trouble!");
    }
    return null;
  }

  public Object getCellEditorValue() {
    System.err.println("getCellEditorValue called");
    System.err.println("   flg = " + flg);
    switch (flg) {
      case   COMBO:
        String str = (String)comboBox.getSelectedItem();
        return new ComboString(str);
      case BOOLEAN:
      case  STRING:
        return cellEditors[flg].getCellEditorValue();
      default:         return null;
    }
  }

  public Component getComponent() {
    return cellEditors[flg].getComponent();
  }
  public boolean stopCellEditing() {
    return cellEditors[flg].stopCellEditing();
  }
  public void cancelCellEditing() {
    cellEditors[flg].cancelCellEditing();
  }
  public boolean isCellEditable(EventObject anEvent) {
    return cellEditors[flg].isCellEditable(anEvent);
  }
  public boolean shouldSelectCell(EventObject anEvent) {
    return cellEditors[flg].shouldSelectCell(anEvent);
  }
  public void addCellEditorListener(CellEditorListener l) {
    cellEditors[flg].addCellEditorListener(l);
  }
  public void removeCellEditorListener(CellEditorListener l) {
    cellEditors[flg].removeCellEditorListener(l);
  }
  public void setClickCountToStart(int n) {
    cellEditors[flg].setClickCountToStart(n);
  }
  public int getClickCountToStart() {
    return cellEditors[flg].getClickCountToStart();
  }
}