Dispalying combo in JTabvle Cell + more

[Girish Varde]

I want to display comobox in some of my JTable columns. Also, i want the user to enter edit mode directly on single click for all the columns (With combo editor and normal cells)

My code follws, currently it has some problem such as it hangs after clicking on combo cell.

Please suggest a solution.

Thanks and regards,

Girish Varde

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package com.apsiva.client.pi;
 
/**
 * @author Administrator
 *
 * TODO To change the template for this generated type comment go to
 * Window - Preferences - Java - Code Style - Code Templates
 */
import java.awt.*;
import java.util.*;
import javax.swing.*;
import javax.swing.text.*;
import javax.swing.table.*;
 
import com.apsiva.client.iedit.ItemCellEditor;
 
public class TableEditCell extends JFrame
{
        public TableEditCell()
        {
                String[] columnNames = {"Number", "Letter"};
                Object[][] data = { {"1", "A"}, {"2", "B"}, {"3", "C"} };
 
                JTable table = new JTable(data, columnNames)
                {
                        //  Place cell in edit mode when it 'gains focus'
 
                        public void changeSelection(
                                int row, int column, boolean toggle, boolean extend)
                        {
                                super.changeSelection(row, column, toggle, extend);
 
                                if (editCellAt(row, column))
                                        getEditorComponent().requestFocusInWindow();
                        }
 
                        //  Select the text when the cell starts editing
                        //  a) text will be replaced when you start typing in a cell
                        //  b) text will be selected when you use F2 to start editing
                        //  c) text will be selected when double clicking to start editing
 
//                        public boolean xxxeditCellAt(int row, int column, EventObject e)
                        public boolean xxxeditCellAt(int row, int column, EventObject e)
                        {
                                boolean result = super.editCellAt(row, column, e);
                                final Component editor = getEditorComponent();
 
                                if (editor != null && editor instanceof JTextComponent)
                                {
                                        if (e == null)
                                        {
                                                ((JTextComponent)editor).selectAll();
                                        }
                                        else
                                        {
                                                SwingUtilities.invokeLater(new Runnable()
                                                {
                                                        public void run()
                                                        {
                                                                ((JTextComponent)editor).selectAll();
                                                        }
                                                });
                                        }
                                }
 
                                return result;
                        }
 
                        //  Select the text when the cell starts editing
                        //  a) text will be replaced when you start typing in a cell
                        //  b) text will be selected when you use F2 to start editing
                        //  c) caret is placed at end of text when double clicking to start editing
 
//                        public Component xxxprepareEditor(
                        public Component prepareEditor(
                                TableCellEditor editor, int row, int column)
                        {
                                Component c = super.prepareEditor(editor, row, column);
 
                                if (c instanceof JTextComponent)
                                {
                                        ((JTextField)c).selectAll();
                                }
 
                                return c;
                        }
                };
 
                JScrollPane scrollPane = new JScrollPane( table );
                getContentPane().add( scrollPane );
 
                String[] data1 = {"A","B","C"} ;
                String[] data2 = {"D","E","F"} ;
                String[] data3 = {"G","H","I"} ;
 
                Vector comboBoxModels = new Vector() ;
                comboBoxModels.addElement(new DefaultComboBoxModel(data1)) ;
                comboBoxModels.addElement(new DefaultComboBoxModel(data2)) ;
                comboBoxModels.addElement(new DefaultComboBoxModel(data3)) ;  
                
                ItemCellEditor ice = new ItemCellEditor(new JComboBox(comboBoxModels));
                
                table.getColumnModel().getColumn(0).setCellEditor(ice) ;
                
        
        }
 
        public static void main(String[] args)
        {
                TableEditCell frame = new TableEditCell();
                frame.setDefaultCloseOperation( EXIT_ON_CLOSE );
                frame.pack();
                frame.setLocationRelativeTo( null );
                frame.setVisible(true);
        }
}
 
------------------------------------------------------------------------------
 
package com.apsiva.client.iedit;
 
/**
 * @author Administrator
 *
 * TODO To change the template for this generated type comment go to
 * Window - Preferences - Java - Code Style - Code Templates
 */
/*
 * Created on Mar 16, 2005
 *
 * TODO To change the template for this generated file go to
 * Window - Preferences - Java - Code Style - Code Templates
 */
 
 
import java.awt.Component;
import java.util.EventObject;
import java.util.Vector;
 
import javax.swing.*;
import javax.swing.event.CellEditorListener;
 
/**
 * @author Administrator
 *
 * TODO To change the template for this generated type comment go to
 * Window - Preferences - Java - Code Style - Code Templates
 */
public class ItemCellEditor extends  DefaultCellEditor implements javax.swing.table.TableCellEditor {
        
        
 
        /**
         * @param arg0
         */
        public ItemCellEditor(JComboBox arg0) {
                super(arg0);
                // TODO Auto-generated constructor stub
        }
        /* (non-Javadoc)
         * @see javax.swing.CellEditor#addCellEditorListener(javax.swing.event.CellEditorListener)
         */
 
        
 
        /* (non-Javadoc)
         * @see javax.swing.table.TableCellEditor#getTableCellEditorComponent(javax.swing.JTable, java.lang.Object, boolean, int, int)
         */
         public Component getTableCellEditorComponent(
                         JTable table, Object value, boolean isSelected,int row,
                         int column ) {
                // TODO Auto-generated method stub
 
//                               if (iRowToEdit != row)  //For disabling editing
//                               return null;
                                 int i = 0; 
                                 
//                               return super.getTableCellEditorComponent(
//                               table, value, isSelected,row, column );
 
                                 JComboBox combo = (JComboBox) super.getTableCellEditorComponent(
                                                 table, value, isSelected,row, column );
                        String[] data1 = {"A","B","C"} ;
                        String[] data2 = {"D","E","F"} ;
                        String[] data3 = {"G","H","I"} ;
                        Vector comboOptions = new Vector();
                        comboOptions.add("Choice 1");
                        comboOptions.add("Choice 2");
                        comboOptions.add("Choice 3");
                        comboOptions.add("Choice 4");
                        ComboBoxModel comboBoxModels = new DefaultComboBoxModel(comboOptions) ;
                        combo.setModel(comboBoxModels);
                     if (column == 0 )   return combo;
                                 return super.getTableCellEditorComponent(
                                                 table, value, isSelected,row, column );
                                 
                                 
        }
        /* (non-Javadoc)
         * @see javax.swing.CellEditor#addCellEditorListener(javax.swing.event.CellEditorListener)
         */
        public void addCellEditorListener(CellEditorListener arg0) {
                // TODO Auto-generated method stub
                 int i = 0; 
 
        }
        /* (non-Javadoc)
         * @see javax.swing.CellEditor#cancelCellEditing()
         */
        public void cancelCellEditing() {
                // TODO Auto-generated method stub
                 int i = 0; 
 
        }
        /* (non-Javadoc)
         * @see javax.swing.CellEditor#getCellEditorValue()
         */
        public Object getCellEditorValue() {
                // TODO Auto-generated method stub
                 int i = 0; 
                return null;
        }
        /* (non-Javadoc)
         * @see javax.swing.CellEditor#isCellEditable(java.util.EventObject)
         */
        public boolean isCellEditable(EventObject arg0) {
                // TODO Auto-generated method stub
                
                JTable table = (JTable)arg0.getSource();
                int column = table.getSelectedColumn();
                 int i = 0; 
 
                 return true;
        }
        /* (non-Javadoc)
         * @see javax.swing.CellEditor#removeCellEditorListener(javax.swing.event.CellEditorListener)
         */
        public void removeCellEditorListener(CellEditorListener arg0) {
                 int i = 0; 
                // TODO Auto-generated method stub
 
        }
        /* (non-Javadoc)
         * @see javax.swing.CellEditor#shouldSelectCell(java.util.EventObject)
         */
        public boolean shouldSelectCell(EventObject arg0) {
                // TODO Auto-generated method stub
                 int i = 0; 
                return true;
        }
        /* (non-Javadoc)
         * @see javax.swing.CellEditor#stopCellEditing()
         */
        public boolean stopCellEditing() {
                // TODO Auto-generated method stub
                 int i = 0; 
                return false;
        }
}

--------------------------------------------------------------------------------------------------

[GDB - Added UBB Code Tags so that this post is readable.]
[ March 21, 2005: Message edited by: Gregg Bolinger ]

[Suria Narayanan]

Please narrow down to the problem.
- Try to catch exceptions and see any indefinite method calls are going on.
- As a simple mechanism, see where actual issue starts- is in JTable itself or in cell renderer/editor.

[Girish Varde]

Hi Suria,

Thanks for your reply,

It executes fully and successfully, doesn't enter endless loop. I debugged.

After adding return true in method stopCellEditing, it now displays everything properly except,

it does not edit properly using combo. It allows to select, but when you go tho other cell, it aotomatically selects choice1 of combo.

It should update tablemodel on its own when cell looses focus which is not happening.

Thanks and regards,

Girish Varde