Author: Nobuo Tamemasa

Use JComboBox, JCheckBox and JTextField in the same column. Two samples are given, each of them use EachRowRenderer and EachRowEditor.

Sample1

// File: MultiComponentTable.java
/* (swing1.1beta3) */
//package jp.gr.java_conf.tame.swing.examples;

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.table.*;
import javax.swing.event.*;
import java.util.EventObject;

/**
 * @version 1.0 11/09/98
 */

class ComboString {
  String str;
  ComboString(String str) {
    this.str = str;
  }
  public String toString() {
    return str;
  }
}

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);
  }
}

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.setOpaque( true );
    checkBox.setHorizontalAlignment(JLabel.CENTER);
    cellEditors[BOOLEAN] = new DefaultCellEditor(checkBox);
    JTextField textField = new JTextField();
    cellEditors[STRING]  = new DefaultCellEditor(textField);
    flg = NUM_EDITOR;      // nobody
  }

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

  public Object getCellEditorValue() {
    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();
  }
}

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);
      }
    });
  }
}

Sample2

// File : MultiComponentTable2.java
/* (swing1.1beta3) */
//package jp.gr.java_conf.tame.swing.examples;

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.table.*;
import javax.swing.event.*;
import java.util.EventObject;
import jp.gr.java_conf.tame.swing.table.*;

/**
 * @version 1.0 11/09/98
 */
class CheckBoxRenderer extends JCheckBox implements TableCellRenderer {

  CheckBoxRenderer() {
    setHorizontalAlignment(JLabel.CENTER);
  }
  
  public Component getTableCellRendererComponent(JTable table, Object value,
                         boolean isSelected, boolean hasFocus,
                          int row, int column) {
    if (isSelected) {
      setForeground(table.getSelectionForeground());
      //super.setBackground(table.getSelectionBackground());
      setBackground(table.getSelectionBackground());
    } else {
      setForeground(table.getForeground());
      setBackground(table.getBackground());
    }
    setSelected((value != null && ((Boolean)value).booleanValue()));
    return this;
  }
}


public class MultiComponentTable2 extends JFrame {

  public MultiComponentTable2(){
    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[][]{
        {"true"             ,"String"  ,"JLabel"   ,"JComboBox"},
        {"false"            ,"String"  ,"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"});

    CheckBoxRenderer checkBoxRenderer = new CheckBoxRenderer();
    EachRowRenderer  rowRenderer         = new EachRowRenderer();
    rowRenderer.add(2, checkBoxRenderer);
    rowRenderer.add(3, checkBoxRenderer);
    JComboBox comboBox = new JComboBox();
    comboBox.addItem("true");
    comboBox.addItem("false");
    JCheckBox checkBox = new JCheckBox();
    checkBox.setHorizontalAlignment(JLabel.CENTER);
    DefaultCellEditor comboBoxEditor = new DefaultCellEditor(comboBox);
    DefaultCellEditor checkBoxEditor = new DefaultCellEditor(checkBox);
    EachRowEditor rowEditor = new EachRowEditor();
    rowEditor.add(0, comboBoxEditor);
    rowEditor.add(1, comboBoxEditor);
    rowEditor.add(2, checkBoxEditor);
    rowEditor.add(3, checkBoxEditor);    
    JTable table = new JTable(dm);
    table.getColumn("Component").setCellRenderer(rowRenderer);
    table.getColumn("Component").setCellEditor(rowEditor);

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

  public static void main(String[] args) {
    MultiComponentTable2 frame = new MultiComponentTable2();
    frame.addWindowListener( new WindowAdapter() {
      public void windowClosing( WindowEvent e ) {
        System.exit(0);
      }
    });
  }
}

Classes

// File: EachRowRenderer.java
/*
 * (swing1.1beta3)
 */

package jp.gr.java_conf.tame.swing.table;

import java.util.*;
import java.awt.*;
import javax.swing.*;
import javax.swing.table.*;
import javax.swing.event.*;

/**
 * @version 1.0 11/09/98
 */

public class EachRowRenderer implements TableCellRenderer {
  protected Hashtable renderers;
  protected TableCellRenderer renderer, defaultRenderer;

  public EachRowRenderer() {
    renderers = new Hashtable();
    defaultRenderer = new DefaultTableCellRenderer();
  }
  
  public void add(int row, TableCellRenderer renderer) {
    renderers.put(new Integer(row),renderer);
  }
  
  public Component getTableCellRendererComponent(JTable table,
      Object value, boolean isSelected, boolean hasFocus,
                                      int row, int column) {
    renderer = (TableCellRenderer)renderers.get(new Integer(row));
    if (renderer == null) {
      renderer = defaultRenderer;
    }
    return renderer.getTableCellRendererComponent(table,
             value, isSelected, hasFocus, row, column);
  }
}
  




// File: EachRowEditor.java
/*
 * (swing1.1beta3) jfc#91
 */

package jp.gr.java_conf.tame.swing.table;

import java.util.*;
import java.awt.*;
import javax.swing.*;
import javax.swing.table.*;
import javax.swing.event.*;

/**
  * each row TableCellEditor
  *
  * @version 1.0 10/20/98
  * @author Nobuo Tamemasa
  */

public class EachRowEditor implements TableCellEditor {
  protected Hashtable editors;
  protected TableCellEditor editor, defaultEditor;

  /**
   * Constructs a EachRowEditor.
   * create default editor 
   *
   * @see TableCellEditor
   * @see DefaultCellEditor
   */ 
  public EachRowEditor() {
    editors = new Hashtable();
    defaultEditor = new DefaultCellEditor(new JTextField());
  }
  
  /**
   * @param row    table row
   * @param editor table cell editor
   */
  public void add(int row, TableCellEditor editor) {
    editors.put(new Integer(row),editor);
  }
  
  public Component getTableCellEditorComponent(JTable table,
      Object value, boolean isSelected, int row, int column) {
    editor = (TableCellEditor)editors.get(new Integer(row));
    if (editor == null) {
      editor = defaultEditor;
    }
    return editor.getTableCellEditorComponent(table,
             value, isSelected, row, column);
  }

  public Object getCellEditorValue() {
    return editor.getCellEditorValue();
  }
  public boolean stopCellEditing() {
    return editor.stopCellEditing();
  }
  public void cancelCellEditing() {
    editor.cancelCellEditing();
  }
  public boolean isCellEditable(EventObject anEvent) {
    return editor.isCellEditable(anEvent);
  }
  public void addCellEditorListener(CellEditorListener l) {
    editor.addCellEditorListener(l);
  }
  public void removeCellEditorListener(CellEditorListener l) {
    editor.removeCellEditorListener(l);
  }
  public boolean shouldSelectCell(EventObject anEvent) {
    return editor.shouldSelectCell(anEvent);
  }
}
  

Posted On: 2-Jan-1999

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