Rendering problem

[Arun Sanker]

Hi Guys,

Iam developing under java swing and found it difficult to achieve the following goals which I wanted to.

Iam rendering JTable with combobox.
Somethings which I want is still not happening and I dont know why?

Iam attaching an image also along with this.

http://i337.photobucket.com/albums/n399/turniphorse/TableCombo1-1.jpg

How could I achieve the following things.

[1] The "First" and "Last" column show the same comboItem.Want the comboitem in the "Last" column to be last.Is using only 1 renderer and editor for both the columns. Need only 1 selection in the cell(yellow background)

[2]The table cells shouldnt display the comboitems.They should be blank.Only when the user selects a comboitem from the combobox,then only it should be displayed in the corresponding cell.

[3]The Table "setValue" call from the button is not changing the cell value.As you can see in the "getTableCellRendererComponent".Iam using the table value.
How could this be done?The comboboxes are noneditable.

This code is compilable.Would be nice if anyone could point out the changes that should be made in the current code.Would really appreciate it

package set.test;
 
import java.awt.Color;
import java.awt.Component;
import java.awt.Dimension;
import java.awt.GridLayout;
import java.awt.Point;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import java.util.Vector;
 
import javax.swing.DefaultCellEditor;
import javax.swing.JButton;
import javax.swing.JComboBox;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.ListSelectionModel;
import javax.swing.table.DefaultTableModel;
import javax.swing.table.TableCellRenderer;
import javax.swing.table.TableColumn;
 
public class TableCellColour extends JPanel {
 
    private int tableHilightedRow, tableHilightedCol;
    JTable table = null;   
    private Vector rowData;
private Vector columnNames;
private JButton jButton = null;  //  @jve :mrgreen: ecl-index=0:visual-constraint="348,164"

public TableCellColour(){

super(new GridLayout(1,0));
rowData = new Vector();
columnNames = new Vector();
this.columnNames.addElement("Entry Type");
this.columnNames.addElement("First");
this.columnNames.addElement("Last");


this.tableHilightedRow = -1;
this.tableHilightedCol = -1;
table = new JTable(new MyTableModel(rowData,columnNames));
table.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);
addRows();
 
table.setPreferredScrollableViewportSize(new Dimension(500,70));
   

JScrollPane scrollpane = new JScrollPane(table);

//Create the scroll pane and add the table to it.
    JScrollPane scrollPane = new JScrollPane(table);    
    table.addMouseListener(new MouseHandler());      
    setUpStartEndRangeColumn(table); 
    
   add(scrollPane);
   add(getJButton());
}
 
private void addRows(){

Vector row = new Vector();
row.clear();
row.addElement("");
row.addElement("555");
row.addElement("566");
MyTableModel myModel = (MyTableModel) this.table.getModel();
myModel.addRow(row);

row.clear();
row.addElement("");
row.addElement("655");
row.addElement("666");
myModel.addRow(row);

 
row.clear();
row.addElement("");
row.addElement("755");
row.addElement("766");
myModel.addRow(row);

 
row.clear();
row.addElement("");
row.addElement("855");
row.addElement("866");
myModel.addRow(row);
}
public void setUpStartEndRangeColumn(JTable table){

// These are the combobox values
String[] values1 = new String[]{"First"};
JComboBox comboBox = new JComboBox(values1);
MyComboBoxEditor cellEditor = new MyComboBoxEditor(comboBox);
TableColumn startRange = table.getColumnModel().getColumn(1);
startRange.setCellEditor(cellEditor);
MyComboBoxRenderer  comboRenderer= new MyComboBoxRenderer(comboBox);
startRange.setCellRenderer(comboRenderer);   


String[] values2 = new String[]{"Last"};
TableColumn endRange = table.getColumnModel().getColumn(2);
endRange.setCellEditor(cellEditor);
endRange.setCellRenderer(comboRenderer); 

}
 
public void setTableRowColSelection() {
 
if (tableHilightedRow != -1)
table.setRowSelectionInterval(0, tableHilightedRow);
if (tableHilightedCol != -1)
table.setColumnSelectionInterval(0, tableHilightedCol);
}
 
public class MyTableModel extends DefaultTableModel{

public MyTableModel(Vector rowDataSet, Vector columnNamesSet) {
super(rowDataSet, columnNamesSet);
}
 
public Class getColumnClass(int columnIndex) {
 
return getValueAt(0, columnIndex).getClass();
}

public boolean isCellEditable(int row,int col){
   if(col==1 ||col==2)
return true;
else 
return false;
} 
}
  
public class MyComboBoxEditor extends DefaultCellEditor {
    /**
 * 
 */
private static final long serialVersionUID = 1L;
public MyComboBoxEditor(JComboBox combo) {
    
    super(combo);
    setClickCountToStart(2);
    }
   public void setClickCountToStart(int count)  {
    
   super.setClickCountToStart(count);
    }
}
 
public class MyComboBoxRenderer extends JComboBox implements TableCellRenderer {

int highlightRow = -1;
int highlightCol = -1;

    public MyComboBoxRenderer(JComboBox combo) {
       super(combo.getModel());     
    }
    
    
    public Component getTableCellRendererComponent(JTable table, Object value,
            boolean isSelected, boolean hasFocus, int row, int column) {
     if (row == highlightRow && column == highlightCol) {
setBackground(Color.yellow);
this.getEditor().setItem(value);
} else if (isSelected) {

 setForeground(table.getSelectionForeground());
         super.setBackground(table.getSelectionBackground());
        this.getEditor().setItem(value);

} else
{
 setForeground(table.getForeground());
 setBackground(table.getBackground());
 this.getEditor().setItem(value);
       
}
return this;
    }
    
    public void setHighlightCell(int row, int col) {
highlightRow = row;
highlightCol = col;
tableHilightedRow = highlightRow; 
tableHilightedCol = highlightCol;
setTableRowColSelection();
}
    
}
 
 class MouseHandler extends MouseAdapter {
    public void mousePressed(MouseEvent e) {
    
        JComboBox comp = null;
        Point p = e.getPoint();
    int row = table.rowAtPoint(p);
int col = table.columnAtPoint(p);
MyComboBoxRenderer render = (MyComboBoxRenderer) table.getCellRenderer(row, col);
String eVal = (String)table.getValueAt(row,col);
comp = (JComboBox) render.getTableCellRendererComponent(table,eVal,true,true,row,col);
render.setHighlightCell(row, col);        
        table.repaint();            
        
    }
}
 
private static void  createAndShowGUI(){

JFrame frame = new JFrame("TableComBoBox");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
TableCellColour newContentPane = new TableCellColour();
newContentPane.setOpaque(true);
frame.setContentPane(newContentPane);

frame.pack();
frame.setVisible(true);


}
/**
 * This method initializes jButton
 * 
 * @return javax.swing.JButton
 */
private JButton getJButton() {
if (this.jButton == null) {
jButton = new JButton();
jButton.setSize(new Dimension(176, 29));
jButton.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent e) {
table.setValueAt("Test",0, 1);
}
});
}
return jButton;
}
 
public static void main(String[] args) {
    //Schedule a job for the event-dispatching thread:
    //creating and showing this application's GUI.
    javax.swing.SwingUtilities.invokeLater(new Runnable() {
        public void run() {            
           createAndShowGUI();
        }
    });
}
}
 

Thanks in advance..
P