JTable Cell Renderers

[Richard West]

Hi everyone,

I am currently trying to use a JTextPane as a cell renderers for a JTable but it does not seem to work although the program compiles. I alsways get an error stating class cast exception saying that i must cast the editor component to JTextField instead of a JTextPane although i am using a JTextPane as a cell renderer.

This exeption gets thrown when i try to apply some font to the selected text in the JTextPane.

Below is a small compilable that i have done which compiles and throws the exception that i have mentioned about

Here is the compilable example

import java.awt.*;
import java.awt.image.*;
import java.io.*;
import java.text.*;
import java.awt.event.*;
import java.awt.geom.*;
import javax.swing.*;
import javax.swing.event.*;
import javax.swing.table.*;
import javax.swing.text.*;
 
public class TabTest implements ActionListener, ItemListener
 
{
 
JFrame fr = new JFrame ("Frame");
 

JButton Button1 = new JButton("Add Coloum");
JButton Button2 = new JButton("Add Row");
 
JComboBox ComboBox1;
 
DefaultTableModel TableModel1 = new DefaultTableModel(0, 0);
 
JTable Table1 = new JTable(TableModel1);
 
JScrollPane ScrollPane1 = new JScrollPane(Table1, ScrollPaneConstants.VERTICAL_SCROLLBAR_ALWAYS, 
ScrollPaneConstants.HORIZONTAL_SCROLLBAR_ALWAYS);  
 
String FontFamily = "Arial";
 
Dimension Size1 = new Dimension();
 
//add
//The below command line is the constructor for the JTextPane
 
JTextPane TextPane1 = new JTextPane();
 
//The below two command lines creates instances for fonts
 
SimpleAttributeSet sas = new SimpleAttributeSet();
 
StyleContext sc = new StyleContext();
 
//The below command line sets up the variable for font updating
 
MutableAttributeSet mas;
 
//The below command line is the default document class which 
//has one argument as explained below
//The first argument sets the Style Context of the styled document
 
DefaultStyledDocument dse = new DefaultStyledDocument(sc);
StyledEditorKit StyledEditorKit1 = new StyledEditorKit(); 
 
CellPaneRenderer CellPaneRenderer1 = new CellPaneRenderer();
//end
 
public void initialize ()
{ 
Container pane = fr.getContentPane();
pane.setLayout(new FlowLayout());
fr.setSize(250,300);
fr.setLocation(300,300);
fr.setBackground(Color.lightGray);
//The below command line must be set to false so that user 
//resizing is allowed
 
Table1.setAutoCreateColumnsFromModel(false);
Table1.setGridColor(Color.black);
 
Size1.width = 350;
Size1.height = 250;
ScrollPane1.setPreferredSize(Size1);
 
Table1.setModel(TableModel1);
Table1.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);
Table1.setAutoResizeMode(JTable.AUTO_RESIZE_OFF); 
 
Table1.setDefaultRenderer(Object.class, new CustomTableCellRenderer(Color.white));
Table1.setDefaultRenderer(Object.class, new CellPaneRenderer());
 
pane.add(ScrollPane1);
pane.add(Button1);
pane.add(Button2);
combofontfamilyinitialize();
pane.add(ComboBox1);
 
fr.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
Button1.addActionListener(this);
Button2.addActionListener(this);
 
ComboBox1.addItemListener(this);
fr.pack();
fr.setVisible(true);
}
 
public void combofontfamilyinitialize ()
{
//This function fills the combo box with the system available font families
 
GraphicsEnvironment ge1 = GraphicsEnvironment.getLocalGraphicsEnvironment();
String[] k = ge1.getAvailableFontFamilyNames();
ComboBox1= new JComboBox(k);
}
 

public void setAttributeSet(AttributeSet attr)
{
 
//This function only set the specified font set by the
//attr variable to the text selected by the mouse
 
int xStart, xFinish, k;
 
xStart = TextPane1.getSelectionStart(); 
xFinish = TextPane1.getSelectionEnd();
k = xFinish - xStart; 
 
if(xStart != xFinish)
{
dse.setCharacterAttributes(xStart, k, attr, false);
}
 
else if(xStart == xFinish)
{
//The below two command line updates the JTextPane according to what
//font that is being selected at a particular moment
 
mas = StyledEditorKit1.getInputAttributes();
mas.addAttributes(attr);
}
 
}
 
public void insertcolumn (JTable table2)
{
//This function adds a column dynamically to the end of the JTable
 
TableModel1 = (DefaultTableModel)table2.getModel();
TableColumn col = new TableColumn(TableModel1.getColumnCount());
 
//add
col.setCellRenderer(CellPaneRenderer1);
//end
 
TableModel1.addColumn("   ");
//The below command line adds the new column to the JTable
 
table2.addColumn(col);
 
TableModel1.fireTableStructureChanged();
}
 
public void actionPerformed(ActionEvent event)
{
JComponent b = (JComponent)event.getSource();
int d;
String str3 = null;
String str4 = null, str5 = null;
Object Object1 = null;
Object Object2 = null;
 
if(b == Button1)
{
//The below command line removes the cell editor of the JTable to
//prevent any repitation of data from being added to the JTable
 
Table1.removeEditor();
 
insertcolumn(Table1);
}
 
else if(b == Button2)
{
//The below command line removes the cell editor of the JTable to
//prevent any repitation of data from being added to the JTable
 
Table1.removeEditor();
 
//The below two command lines creates and adds an empty object
//an a row into the current JTable
 
Object[] v = new Object[0];
TableModel1.addRow(v);
}
 
}
public void itemStateChanged(ItemEvent event) 
{
JComponent c = (JComponent)event.getSource();
boolean d;
 
if(c == ComboBox1)
{
Table1.editCellAt(0,0);
FontFamily = (String)ComboBox1.getSelectedItem();
TextPane1 = (JTextPane)Table1.getEditorComponent();
 
if(TextPane1 != null)
{
StyleConstants.setFontFamily(sas, FontFamily);
setAttributeSet(sas);
}
 
}
 
}
 
public static void main(String args[])
{
TabTest a = new TabTest(); 
a.initialize();
}
}
 
class CellPaneRenderer extends JTextPane implements TableCellRenderer 
{
 

public CellPaneRenderer() 
{
 
}
 
public Component getTableCellRendererComponent(JTable table, Object value, 
boolean isSelected, boolean hasFocus,
int row, int column) 
{
 
setText((String)value);
setSize(table.getColumnModel().getColumn(column).getWidth(), getPreferredSize().height);
 
if(table.getRowHeight(row) != getPreferredSize().height) 
{
table.setRowHeight(row, getPreferredSize().height);
}
 
return this;
 
}
 
}

Why this exception is occurring i am not very sure and really hope someone can help me with this problem.

Any help is greatly appreciated

Thank You

Yours Sincerely

Richard West

[Sam Codean]

Where are you setting the editor component ?? I see that you are only setting a JTextPane as the Cell Renderer and not the Cell Editor. Both are different.

[Richard West]

Hi everyone,

Originally posted by Sam Codean:
Where are you setting the editor component ?? I see that you are only setting a JTextPane as the Cell Renderer and not the Cell Editor. Both are different.

I tried writing and using the below code by extending the DefaultCellEditor class and uisng it but it only got worse as now if i apply the font to the selected text in the cell all the text dissapears

Here is the code of the class theat extends the default cell editor class

class CellPaneEditor extends DefaultCellEditor 
{
 
JTextPane TextPane1 = new JTextPane();
StyleContext sc = new StyleContext();
DefaultStyledDocument dse = new DefaultStyledDocument(sc);
StyledEditorKit StyledEditorKit1 = new StyledEditorKit(); 
        
public CellPaneEditor() 
{
super(new JTextField());
TextPane1.setEditorKit(StyledEditorKit1);
TextPane1.setDocument(dse);
}
 
public Component getTableCellEditorComponent(JTable table, Object value, 
                                             boolean isSelected,int row, 
                                             int column) 
{
return TextPane1;
}
 
}
 

Here is the entire code using the above class which compiles

import java.awt.*;
import java.awt.image.*;
import java.io.*;
import java.text.*;
import java.awt.event.*;
import java.awt.geom.*;
import javax.swing.*;
import javax.swing.event.*;
import javax.swing.table.*;
import javax.swing.text.*;
 
public class TabTest implements ActionListener, ItemListener
 
{
 
JFrame fr = new JFrame ("Frame");
 

JButton Button1 = new JButton("Add Coloum");
JButton Button2 = new JButton("Add Row");
 
JComboBox ComboBox1;
 
DefaultTableModel TableModel1 = new DefaultTableModel(0, 0);
 
JTable Table1 = new JTable(TableModel1);
 
JScrollPane ScrollPane1 = new JScrollPane(Table1, ScrollPaneConstants.VERTICAL_SCROLLBAR_ALWAYS, 
                                          ScrollPaneConstants.HORIZONTAL_SCROLLBAR_ALWAYS);  
                                          
String FontFamily = "Arial";
 
Dimension Size1 = new Dimension();
 
//add
//The below command line is the constructor for the JTextPane
 
JTextPane TextPane1 = new JTextPane();
 
//The below two command lines creates instances for fonts
 
SimpleAttributeSet sas = new SimpleAttributeSet();
 
StyleContext sc = new StyleContext();
 
//The below command line sets up the variable for font updating
 
MutableAttributeSet mas;
 
//The below command line is the default document class which 
//has one argument as explained below
//The first argument sets the Style Context of the styled document
 
DefaultStyledDocument dse = new DefaultStyledDocument(sc);
StyledEditorKit StyledEditorKit1 = new StyledEditorKit(); 
//end
 
public void initialize ()
{ 
Container pane = fr.getContentPane();
pane.setLayout(new FlowLayout());
fr.setSize(250,300);
fr.setLocation(300,300);
fr.setBackground(Color.lightGray);
//The below command line must be set to false so that user 
//resizing is allowed
 
Table1.setAutoCreateColumnsFromModel(false);
Table1.setGridColor(Color.black);
 
TextPane1.setEditorKit(StyledEditorKit1);
TextPane1.setDocument(dse);
 
Size1.width = 350;
Size1.height = 250;
ScrollPane1.setPreferredSize(Size1);
 
Table1.setModel(TableModel1);
Table1.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);
Table1.setAutoResizeMode(JTable.AUTO_RESIZE_OFF); 
 
Table1.setDefaultEditor(Object.class, new CellPaneEditor());
 
pane.add(ScrollPane1);
pane.add(Button1);
pane.add(Button2);
combofontfamilyinitialize();
pane.add(ComboBox1);
 
fr.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
Button1.addActionListener(this);
Button2.addActionListener(this);
 
ComboBox1.addItemListener(this);
fr.pack();
fr.setVisible(true);
}
 
public void combofontfamilyinitialize ()
{
//This function fills the combo box with the system available font families
 
GraphicsEnvironment ge1 = GraphicsEnvironment.getLocalGraphicsEnvironment();
String[] k = ge1.getAvailableFontFamilyNames();
ComboBox1= new JComboBox(k);
}
 

public void setAttributeSet(AttributeSet attr)
{
 
//This function only set the specified font set by the
//attr variable to the text selected by the mouse
 
int xStart, xFinish, k;
 
xStart = TextPane1.getSelectionStart(); 
xFinish = TextPane1.getSelectionEnd();
k = xFinish - xStart; 
 
if(xStart != xFinish)
{
dse.setCharacterAttributes(xStart, k, attr, false);
}
 
else if(xStart == xFinish)
{
//The below two command line updates the JTextPane according to what
//font that is being selected at a particular moment
 
mas = StyledEditorKit1.getInputAttributes();
mas.addAttributes(attr);
}
 
}
 
public void insertcolumn (JTable table2)
{
//This function adds a column dynamically to the end of the JTable
 
TableModel1 = (DefaultTableModel)table2.getModel();
TableColumn col = new TableColumn(TableModel1.getColumnCount());
 
TableModel1.addColumn("   ");
//The below command line adds the new column to the JTable
 
table2.addColumn(col);
 
TableModel1.fireTableStructureChanged();
}
     
public void actionPerformed(ActionEvent event)
{
JComponent b = (JComponent)event.getSource();
int d;
String str3 = null;
String str4 = null, str5 = null;
Object Object1 = null;
Object Object2 = null;
 
if(b == Button1)
{
//The below command line removes the cell editor of the JTable to
//prevent any repitation of data from being added to the JTable
 
Table1.removeEditor();
 
insertcolumn(Table1);
}
 
else if(b == Button2)
{
//The below command line removes the cell editor of the JTable to
//prevent any repitation of data from being added to the JTable
 
Table1.removeEditor();
 
//The below two command lines creates and adds an empty object
//an a row into the current JTable
 
Object[] v = new Object[0];
TableModel1.addRow(v);
}
 
}
public void itemStateChanged(ItemEvent event) 
{
JComponent c = (JComponent)event.getSource();
boolean d;
 
if(c == ComboBox1)
{
Table1.editCellAt(0,0);
FontFamily = (String)ComboBox1.getSelectedItem();
TextPane1 = (JTextPane)Table1.getEditorComponent();
 
if(TextPane1 != null)
{
StyleConstants.setFontFamily(sas, FontFamily);
setAttributeSet(sas);
 
Button1.setText("Received");
}
 
}
 
}
 
public static void main(String args[])
{
TabTest a = new TabTest(); 
a.initialize();
}
}
 
class CellPaneEditor extends DefaultCellEditor 
{
 
JTextPane TextPane1 = new JTextPane();
StyleContext sc = new StyleContext();
DefaultStyledDocument dse = new DefaultStyledDocument(sc);
StyledEditorKit StyledEditorKit1 = new StyledEditorKit(); 
        
public CellPaneEditor() 
{
super(new JTextField());
TextPane1.setEditorKit(StyledEditorKit1);
TextPane1.setDocument(dse);
}
 
public Component getTableCellEditorComponent(JTable table, Object value, 
                                             boolean isSelected,int row, 
                                             int column) 
{
return TextPane1;
}
 
}
 

Why the JTable is reacting in this way i am not sure and hope someone can
point out to me why this is happening.

Thank You

Yours Sincerely

Richard West
[ November 21, 2006: Message edited by: Richard West ]

[Richard West]

Hi everyone,

Anyone at all?

Richard West

[Brian Cole]

Originally posted by Richard West:
I tried writing and using the below code by extending the DefaultCellEditor class and uisng it but it only got worse as now if i apply the font to the selected text in the cell all the text dissapears

Here is the code of the class theat extends the default cell editor class

class CellPaneEditor extends DefaultCellEditor 
{
 
JTextPane TextPane1 = new JTextPane();
StyleContext sc = new StyleContext();
DefaultStyledDocument dse = new DefaultStyledDocument(sc);
StyledEditorKit StyledEditorKit1 = new StyledEditorKit(); 
        
public CellPaneEditor() 
{
super(new JTextField());
TextPane1.setEditorKit(StyledEditorKit1);
TextPane1.setDocument(dse);
}
 
public Component getTableCellEditorComponent(JTable table, Object value, 
                                             boolean isSelected,int row, 
                                             int column) 
{
return TextPane1;
}
 
}
 

Well of course the text disappears, since the JTextPane you
return in your getTableCellEditorComponent() has never had
any text added to it.

You can try something like textPane1.setText((String)value).
Or since you are keeping a reference to the Document you
could do something with dse.replace() instead, though I'm
not sure why you need the 'dse' field. I'm also not sure
why you are messing with StyledEditorKits.

I would also recommend that you change the textPane1 and
styleEditorKit1 fields to not begin with capital letters,
though that makes no real difference.

[Richard West]

Hi everyone,

I decided to revamp the entire cell editor and the new editor looks like the below

class CellPaneEditor extends DefaultCellEditor 
{JTextPane TextPane1 = new JTextPane();    
StyleContext sc = new StyleContext();    
DefaultStyledDocument dse = new DefaultStyledDocument(sc);    StyledEditorKit StyledEditorKit1 = new StyledEditorKit();    
public CellPaneEditor() 
{
super(new JTextField());
TextPane1.setEditorKit(StyledEditorKit1);
TextPane1.setDocument(dse);
 
delegate = new EditorDelegate() 
{    
public void setValue(Object value) 
{
TextPane1.setText((value != null) ? value.toString() : "");
}
 
public Object getCellEditorValue() 
{
return TextPane1.getText();
}
 
};
 
editorComponent = TextPane1;
KeyStroke ks = KeyStroke.getKeyStroke('\n');
InputMap im = TextPane1.getInputMap();
im.put(ks, "commit_edit");
 
ActionMap am = TextPane1.getActionMap();
am.put("commit_edit", new AbstractAction()
{
public void actionPerformed(ActionEvent e)
{
delegate.actionPerformed(e);
}
}
);
}
}
}
 

There now still seems to be a little problem.

You see now font can be applied to the cell in a particular sentence when the cell is selected but when the cell is deselected the font all dissapears

Also once i have have applied font to the selected text in the and deselected the cell the font all dissapears as mentioned earlier but also when i edit the same cell again the font is also all dissapears.

Why is it reacting in this way?
Am i missing something?

Will it make a difference if a renderer that is appropriate for this use is written?

If yes how does one go about writing this renderer?

Any help is greatly appreciated

Thank You

Yours Sincerely

Richard West

[Peter Taucher]

Head over to:
http://wordhoard.northwestern.edu/userman/javadoc/edu/northwestern/at/utils/swing/XTextPaneTableCellRenderer.html

It's under GNU General Public License and seems to run very well.

[Richard West]

Hi everyone,

Originally posted by Peter Taucher:
Head over to:
http://wordhoard.northwestern.edu/userman/javadoc/edu/northwestern/at/utils/swing/XTextPaneTableCellRenderer.html

It's under GNU General Public License and seems to run very well.

The link you showed me leads to a javadoc and does not seem to lead to any examples or code.

Do have the link to where this TextPane renderer code or example resides at?

Richard West

[Peter Taucher]

You coul've come up with this very simple (just go to the homepage where the javadoc is hosted):
http://wordhoard.northwestern.edu/userman/dev-files.html

[Craig Wood]

DefaultCellEditor is a convenience class for three very specific components. You are using
a different component so this class will not work. When you super(new JTextField()) in the
constructor, the editor will use a JTextField. It will not understand anything about
JTextPane.
When doing custom rendering and editing the renderer and editor must be matching
components, ie, built the same.
The table is a drawing, a graphic snapshot made by configuring the renderer, translating
it to the (row, column) location and having it draw itself. The table and its model have
only the [Object value] to use to give to the renderer for the rendering. There is no
provision made to store these attribute–value pairs in this object. Using this
[Object value] is the only way we have of saving, and transferring information to be used
to make the table.
So it would make sense to create a class that can store the information you want to render
in your table, both text and attributes for the StyledDocument. There are many ways to put
these things together.
Here's a minimal modification of your app to help you get started:

import java.awt.*;
import java.awt.event.*;
import java.util.EventObject;
import javax.swing.*;
import javax.swing.border.*;
import javax.swing.event.*;
import javax.swing.table.*;
import javax.swing.text.*;
 
public class TT implements ActionListener, ItemListener
{
    JButton addColumn;
    JButton addRow;
    JComboBox comboBox;
    JTable table;
 
    public TT()
    {
        // Configure top-level container.
        JFrame fr = new JFrame ("Frame");
        fr.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        fr.setLocation(100,300);
        fr.setBackground(Color.lightGray);
//        fr.setSize(250,300);  // Calling pack later.
 
        // Initialize components.
        addColumn = new JButton("Add Coloum");
        addRow = new JButton("Add Row");
        addColumn.addActionListener(this);
        addRow.addActionListener(this);
 
        comboFontFamilyInitialize();  // See java naming conventions.
        comboBox.addItemListener(this);
 
        table = new JTable(new DefaultTableModel());
        table.setAutoCreateColumnsFromModel(false);
        table.setGridColor(Color.black);
        table.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);
        table.setCellSelectionEnabled(true);
        table.setAutoResizeMode(JTable.AUTO_RESIZE_OFF); 
//        table.setDefaultEditor(Object.class, new CellPaneEditor());
        table.addMouseListener(new CellSelector());
 
        JScrollPane scrollPane = new JScrollPane(table,
                     ScrollPaneConstants.VERTICAL_SCROLLBAR_ALWAYS,
                     ScrollPaneConstants.HORIZONTAL_SCROLLBAR_ALWAYS); 
        scrollPane.setPreferredSize(new Dimension(350, 250));
 
        // Assemble components and show gui.
        JPanel south = new JPanel();
        south.add(addColumn);
        south.add(addRow);
        south.add(comboBox);
        Container pane = fr.getContentPane();
//        pane.setLayout(new FlowLayout());
        pane.add(scrollPane);
        pane.add(south, "Last");
        fr.pack();
        fr.setVisible(true);
    }
 
    public void comboFontFamilyInitialize ()
    {
        GraphicsEnvironment ge = GraphicsEnvironment.getLocalGraphicsEnvironment();
        String[] fontNames = ge.getAvailableFontFamilyNames();
        comboBox = new JComboBox(fontNames);
    }
 
    /** This method adds a column dynamically to the end of the JTable */
    public void insertColumn()
    {
        int rows = table.getRowCount();
        int cols = table.getColumnCount();
        String s = String.valueOf(cols+1);
        Object[] columnData = new Object[rows];
        for(int j = 0; j < rows; j++)
            columnData[j] = new CellData(s + (j+1));
        DefaultTableModel model = (DefaultTableModel)table.getModel();
        TableColumn col = new TableColumn(model.getColumnCount(), 75,
                                          new CustomCellRenderer(),
                                          new CustomCellEditor(table, comboBox));
        model.addColumn(" ", columnData);
        // Add the new column to the JTable
        table.addColumn(col);
        model.fireTableStructureChanged();
    }
 
    private void addRow()
    {
        int rows = table.getRowCount();
        String s = String.valueOf(rows+1);
        int cols = table.getColumnCount();
        Object[] rowData = new Object[cols];
        for(int j = 0; j < cols; j++)
            rowData[j] = new CellData(s + (j+1));
        DefaultTableModel model = (DefaultTableModel)table.getModel();
        model.insertRow(rows, rowData);
    }
 
    public void actionPerformed(ActionEvent event)
    {
        JButton b = (JButton)event.getSource();
        if(b == addColumn)
            insertColumn();
        else if(b == addRow)
            addRow();
    }
 
    public void itemStateChanged(ItemEvent event) 
    {
        JComboBox c = (JComboBox)event.getSource();
        if(c == comboBox)
        {
            String fontFamily = (String)comboBox.getSelectedItem();
            System.out.println(fontFamily + " index = " +
                               comboBox.getSelectedIndex());
        }
    }
 
    public static void main(String args[])
    {
        new TT(); 
    }
}
 
class CellSelector extends MouseAdapter {
    public void mousePressed(MouseEvent e) {
        JTable table = (JTable)e.getSource();
        Point p = e.getPoint();
        int row = table.rowAtPoint(p);
        int col = table.columnAtPoint(p);
        if(row != -1 && col != -1)
            showCellData((CellData)table.getValueAt(row, col));
    }
 
    private void showCellData(CellData data) {
        System.out.printf("text = %s  font family = %s  bold = %b%n" +
                          "background = %s%nforeground = %s%n",
                           data.text, data.family, data.bold,
                           data.background, data.foreground);
    }
}
 
class CellData
{
    String text;
    String family;
    Color background;
    Color foreground;
    boolean bold;
 
    public CellData(String text)
    {
        this.text = text;
        family = UIManager.getFont("Table.font").getFamily();
        background = UIManager.getColor("Table.background");
        foreground = UIManager.getColor("Table.foreground");
        bold = false;
    }
 
    public String toString() { return text; }
}
 
/** Adapted from DefaultTableCellRenderer. */
class CustomCellRenderer implements TableCellRenderer
{
    JTextPane textPane;
    protected static Border noFocusBorder = new EmptyBorder(1, 1, 1, 1); 
 
    public CustomCellRenderer() {
        textPane = new JTextPane();
        Insets insets = textPane.getMargin();
        insets.top = 0;
        textPane.setMargin(insets);
    }
 
    public Component getTableCellRendererComponent(JTable table,
                                                   Object value,
                                                   boolean isSelected,
                                                   boolean hasFocus,
                                                   int row, int column) 
    {
        CellData data = (CellData)value;
        if (isSelected)
        {
            textPane.setForeground(table.getSelectionForeground());
            textPane.setBackground(table.getSelectionBackground());
        }
        else
        {
            textPane.setForeground(data.foreground);
            textPane.setBackground(data.background);
        }
        if (hasFocus)
        {
            textPane.setBorder( UIManager.getBorder("Table.focusCellHighlightBorder") );
            if (!isSelected && table.isCellEditable(row, column))
            {
                Color col = UIManager.getColor("Table.focusCellForeground");
                if (col != null)
                    textPane.setForeground(col);
                col = UIManager.getColor("Table.focusCellBackground");
                if (col != null)
                    textPane.setBackground(col);
            }
        }
        else
            textPane.setBorder(noFocusBorder);
 
        Style def = textPane.getStyle(StyleContext.DEFAULT_STYLE);
        StyleConstants.setFontFamily(def, data.family);
        StyleConstants.setBackground(def, data.background);
        StyleConstants.setForeground(def, data.foreground);
        StyleConstants.setBold(def, data.bold);
        textPane.setLogicalStyle(def);
        textPane.setText(data.toString());
        return textPane;
    }
}
 
class CustomCellEditor extends AbstractCellEditor implements TableCellEditor
{
    JComboBox fontCombo;
    JTextPane textPane;
    JTable table;
    int clickCountToStart = 2;
 
    public CustomCellEditor(JTable table, JComboBox fontCombo) 
    {
        this.table = table;
        this.fontCombo = fontCombo;
        textPane = new JTextPane();
        Insets insets = textPane.getMargin();
        insets.top = 0;
        textPane.setMargin(insets);
    }
 
    public Component getTableCellEditorComponent(JTable table,
                                                 Object value, 
                                                 boolean isSelected,
                                                 int row, int column) 
    {
        // Configure the editor.
        CellData data = (CellData)value;
        Style def = textPane.getStyle(StyleContext.DEFAULT_STYLE);
        StyleConstants.setFontFamily(def, data.family);
        StyleConstants.setBackground(def, data.background);
        StyleConstants.setForeground(def, data.foreground);
        StyleConstants.setBold(def, data.bold);
        textPane.setLogicalStyle(def);
        textPane.setText(data.toString());
        return textPane;
    }
 
    public void cancelCellEditing()
    {
        fireEditingCanceled();
    }
 
    public Object getCellEditorValue()
    {
        Style def = textPane.getStyle(StyleContext.DEFAULT_STYLE);
        // Collect and wrap data for transfer.
        CellData data = new CellData(textPane.getText());
        data.family = (String)fontCombo.getSelectedItem();
        // These would be set by other means, similar to
        // setting fontFamily with the font JComboBox
        // above. For now we'll just read the values
        // back in from the default style.
        data.background = StyleConstants.getBackground(def);
        data.foreground = StyleConstants.getForeground(def);
        data.bold = StyleConstants.isBold(def);
        return data;
    }
 
    public boolean isCellEditable(EventObject anEvent)
    {
        if (anEvent instanceof MouseEvent)
            return ((MouseEvent)anEvent).getClickCount() >= clickCountToStart;
        return false;
    }
 
    public boolean shouldSelectCell(EventObject anEvent)
    {
        return true; 
    }
 
    public boolean stopCellEditing()
    {
        // Retrieve CellData object from model for this cell.
        int row = table.getEditingRow();
        int col = table.getEditingColumn();
        CellData modelData = (CellData)table.getValueAt(row, col);
        // Get current data from this edit session/state.
        CellData editorData = (CellData)getCellEditorValue();
        // Update the model CellData values with the editor values.
        modelData.family = editorData.family;
        modelData.background = editorData.background;
        modelData.foreground = editorData.foreground;
        modelData.bold = editorData.bold;
        // Stop editing.
        fireEditingStopped();
        return super.stopCellEditing();
    }
}