I am using a JTable and extending an AbstractTableModel to do so. My data container is an ArrayList of "Entries", a data structure I defined to store a group of objects.
I am looking for assistance/advice on how to implement a button that allows the duplication of a selected row. I have successfully added a button that inserts a new row with dummy data generated within the addRow() function. The next step is to retrieve data from the selected row when the button is clicked. In my tableChanged() function I successfully retrieve the data changed, but it uses a TableModelEvent (when the table is edited) instead of an ActionEvent, which is used for my addRow() function. I need to find a way to have my ActionEvent detect my current row. Here is my code below:
import javax.swing.*;
import javax.swing.table.AbstractTableModel;
import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.util.ArrayList;
import javax.swing.event.*;
import javax.swing.table.TableModel;
public class MyTable extends JPanel implements TableModelListener,ActionListener {
private boolean DEBUG = false;
private JTable table;
private MyTableModel model;
private JButton duplicateButton;
public MyTable() {
super(new GridLayout(2,0));
duplicateButton = new JButton("duplicate");
JPanel pan = new JPanel(new BorderLayout());
pan.add(duplicateButton);
ArrayList<Entry> myEntries = new ArrayList<Entry>();
Entry entry1 = new Entry(1, 116, "SOY", "test1", "code", "31122A", 1.0);
Entry entry2 = new Entry(3, 118, "OATS", "test3", "code", "311230", 1.0);
myEntries.add(entry1);
myEntries.add(entry2);
model = new MyTableModel(myEntries);
table = new JTable(model);
table.setPreferredScrollableViewportSize(new Dimension(500, 70));
table.setFillsViewportHeight(true);
table.getModel().addTableModelListener(this);
JScrollPane scrollPane = new JScrollPane(table);
add(scrollPane);
add(pan);
duplicateButton.addActionListener(this);
}
public void actionPerformed(ActionEvent e) {
addRow();
}
public void tableChanged(TableModelEvent e) {
int row = e.getFirstRow();
int column = e.getColumn();
TableModel tempmodel = (TableModel)e.getSource();
//String columnName = model.getColumnName(column);
Object data = tempmodel.getValueAt(row, column);
System.out.println("**Table Change**");
System.out.println("Row #: "+row);
System.out.println("Column #: "+column);
System.out.println("New Data: "+data);
System.out.println("***************");
}
public void addRow(){
Entry newEntry = new Entry(1, 120, "OATS", "testADD", "ADDcode", "311000", 1.0);
ArrayList<Entry> temp = model.data;
temp.add(newEntry);
model.data = temp;
//this.setModelData(temp);
table.revalidate();
table.repaint();
model.fireTableDataChanged();
}
public class Entry{
Object index;
Object customer_id;
Object expenditure_category;
Object expenditure_description;
Object commodity_classification;
Object io_code;
Object allocation;
public Entry(Object i, Object c, Object ec, Object ed, Object cc, Object io, Double a){
index = i;
customer_id = c;
expenditure_category = ec;
expenditure_description = ed;
commodity_classification = cc;
io_code = io;
allocation = a;
}
public Object find(int i){
if(i == 0)
return index;
else if (i == 1)
return customer_id;
else if (i == 2)
return expenditure_category;
else if (i == 3)
return expenditure_description;
else if (i == 4)
return commodity_classification;
else if (i == 5)
return io_code;
else if (i == 6)
return allocation;
else
return "No Value Found";
}
public void set(int i, Object x){
if(i == 0)
index = x;
else if (i == 1)
customer_id = x;
else if (i == 2)
expenditure_category = x;
else if (i == 3)
expenditure_description = x;
else if (i == 4)
commodity_classification = x;
else if (i == 5)
io_code = x;
else if (i == 6)
allocation = x;
}
}
class MyTableModel extends AbstractTableModel {
ArrayList<Entry> data;
String [] columnNames = {"id", "customer_id","expenditure_category","expenditure_description","commodity_classification_code","io_code","allocation"};
public MyTableModel(ArrayList<Entry> d){
this.data = new ArrayList<Entry>(d);
}
/*
Object[][] data = {
{new Integer(1), new Integer(116), "SOY", "test1","code","31122A",new Double(1.0)},
{new Integer(2), new Integer(116), "FIB", "test2","code","311990",new Double(1.0)},
{new Integer(3), new Integer(118), "OATS", "test3","code","311230",new Double(1.0)},
{new Integer(4), new Integer(118), "FLOUR", "V1","code","311210",new Double(.5)},
{new Integer(5), new Integer(118), "FLOUR", "V2","code","311230",new Double(.5)},
{new Integer(6), new Integer(118), "FIB", "test4","code","31123A",new Double(1.0)},
{new Integer(7), new Integer(118), "FLOUR", "test5","code","31111B",new Double(1.0)},
{new Integer(8), new Integer(118), "FLOUR", "test6","code","311000",new Double(1.0)}
};
*/
public int getColumnCount() {
return columnNames.length;
}
public int getRowCount() {
return data.size();
}
public String getColumnName(int col) {
return columnNames[col];
}
public Object getValueAt(int row, int col) {
Entry e = this.data.get(row);
return e.find(col);
}
public Class getColumnClass(int c) {
return getValueAt(0, c).getClass();
}
public boolean isCellEditable(int row, int col) {
if (col < 5) {
return false;
} else {
return true;
}
}
/*
public void insertRow(int row, Entry e){
}
*/
public void setValueAt(Object value, int row, int col) {
if (DEBUG) {
System.out.println("Setting value at " + row + "," + col
+ " to " + value
+ " (an instance of "
+ value.getClass() + ")");
}
Entry temp = data.get(row);
temp.set(col, value);
data.set(row,temp);
fireTableCellUpdated(row, col);
if (DEBUG) {
System.out.println("New value of data:");
printDebugData();
}
}
private void printDebugData() {
int numRows = getRowCount();
int numCols = getColumnCount();
for (int i=0; i < numRows; i++) {
System.out.print(" row " + i + ":");
for (int j=0; j < numCols; j++) {
//System.out.print(" " + data[i][j]);
}
System.out.println();
}
System.out.println("--------------------------");
}
}
private static void createAndShowGUI() {
JFrame frame = new JFrame("MyTable");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
MyTable newContentPane = new MyTable();
newContentPane.setOpaque(true);
frame.setContentPane(newContentPane);
frame.pack();
frame.setVisible(true);
}
public static void main(String[] args) {
javax.swing.SwingUtilities.invokeLater(new Runnable() {
public void run() {
createAndShowGUI();
}
});
}
}
I have successfully created my duplicate button! After creating my button that added a row using an ActionListener, I retrieved the data from my table model using a RowListener, which implemented a ListActionListener.
See the code below:
import javax.swing.*;
import javax.swing.table.AbstractTableModel;
import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.util.ArrayList;
import javax.swing.event.*;
import javax.swing.table.TableModel;
public class SqlTable extends JPanel implements TableModelListener,ActionListener {
private boolean DEBUG = false;
private JTable table;
private MyTableModel model;
private JButton duplicateButton;
private Entry selectedEntry;
private boolean isSet = false;
//Connector Vars
public SqlTable() {
super(new GridLayout(2,0));
duplicateButton = new JButton("duplicate");
JPanel pan = new JPanel(new BorderLayout());
pan.add(duplicateButton);
ArrayList<Entry> myEntries = new ArrayList<Entry>();
Entry entry1 = new Entry("Customer1", "SOY", "test1", "code", "31122A", 1.0);
Entry entry2 = new Entry("Customer2", "OATS", "test3", "code", "311230", 1.0);
myEntries.add(entry1);
myEntries.add(entry2);
model = new MyTableModel(myEntries);
table = new JTable(model);
table.setPreferredScrollableViewportSize(new Dimension(500, 70));
table.setFillsViewportHeight(true);
table.getModel().addTableModelListener(this);
table.getSelectionModel().addListSelectionListener(new RowListener());
JScrollPane scrollPane = new JScrollPane(table);
add(scrollPane);
add(pan);
duplicateButton.addActionListener(this);
}
public void actionPerformed(ActionEvent e) {
addRow();
}
private class RowListener implements ListSelectionListener {
public void valueChanged(ListSelectionEvent event) {
if (event.getValueIsAdjusting()) {
return;
}
int rowSelected = table.getSelectionModel().getLeadSelectionIndex();
if(rowSelected!=-1) {
ArrayList<Entry> temp = model.data;
Entry tempEntry = temp.get(rowSelected);
Object tempObj = tempEntry.find(5);
Double tempDouble = (Double)tempObj;
selectedEntry = new Entry(tempEntry.find(0),tempEntry.find(1),tempEntry.find(2),tempEntry.find(3),tempEntry.find(4),tempDouble);
isSet = true;
System.out.println("Row selected: "+table.getSelectionModel().getLeadSelectionIndex());
}
}
}
public void tableChanged(TableModelEvent e) {
int row = e.getFirstRow();
int column = e.getColumn();
TableModel tempmodel = (TableModel)e.getSource();
Object data = tempmodel.getValueAt(row, column);
if(column!=-1){
System.out.println("**Table Change**");
System.out.println("Row #: "+row);
System.out.println("Column #: "+column);
System.out.println("New Data: "+data);
System.out.println("***************");
}
}
public void addRow(){
if(isSet) {
ArrayList<Entry> temp = model.data;
temp.add(selectedEntry);
model.data = temp;
table.revalidate();
table.repaint();
model.fireTableDataChanged();
}
}
public class Entry{
Object name;
Object expenditure_category;
Object expenditure_description;
Object commodity_classification;
Object io_code;
Object allocation;
public Entry(Object n, Object ec, Object ed, Object cc, Object io, Double a){
name = n;
expenditure_category = ec;
expenditure_description = ed;
commodity_classification = cc;
io_code = io;
allocation = a;
}
public Object find(int i){
if(i == 0)
return name;
else if (i == 1)
return expenditure_category;
else if (i == 2)
return expenditure_description;
else if (i == 3)
return commodity_classification;
else if (i == 4)
return io_code;
else if (i == 5)
return allocation;
else
return "No Value Found";
}
public void set(int i, Object x){
if(i == 0)
name = x;
else if (i == 1)
expenditure_category = x;
else if (i == 2)
expenditure_description = x;
else if (i == 3)
commodity_classification = x;
else if (i == 4)
io_code = x;
else if (i == 5)
allocation = x;
}
}
class MyTableModel extends AbstractTableModel {
ArrayList<Entry> data;
String [] columnNames = {"business_name","expenditure_category","expenditure_description","commodity_classification_code","io_code","allocation"};
public MyTableModel(ArrayList<Entry> d){
this.data = new ArrayList<Entry>(d);
}
public int getColumnCount() {
return columnNames.length;
}
public int getRowCount() {
return data.size();
}
public String getColumnName(int col) {
return columnNames[col];
}
public Object getValueAt(int row, int col) {
Entry e = this.data.get(row);
return e.find(col);
}
public Class getColumnClass(int c) {
return getValueAt(0, c).getClass();
}
public boolean isCellEditable(int row, int col) {
if (col < 4) {
return false;
} else {
return true;
}
}
public void setValueAt(Object value, int row, int col) {
if(col==4){
String checkIOcode = value.toString();
if(checkIOcode.length() == 6){
insertData(value,row,col);
ArrayList<Entry> temp = model.data;
Entry tempEntry = temp.get(row);
selectedEntry= tempEntry;
}
}else if(col==5) {
String objectString = value.toString();
if (isDecimal(objectString)||isNumeric(objectString)) {
Double checkAllocation = Double.parseDouble(objectString);
if (checkAllocation <= 1.0 && checkAllocation >= 0.0) {
insertData(value, row, col);
ArrayList<Entry> temp = model.data;
Entry tempEntry = temp.get(row);
selectedEntry= tempEntry;
}
}
}else{
insertData(value,row,col);
ArrayList<Entry> temp = model.data;
Entry tempEntry = temp.get(row);
selectedEntry= tempEntry;
}
}
public boolean isDecimal(String s){
String pattern= "^-?[0-9]*[.][0-9]*$";
return s.matches(pattern);
}
public boolean isNumeric(String s){
String pattern= "^-?[0-9]+$";
return s.matches(pattern);
}
private void insertData(Object value, int row, int col){
Entry temp = data.get(row);
temp.set(col, value);
data.set(row,temp);
fireTableCellUpdated(row, col);
}
private void printDebugData() {
int numRows = getRowCount();
int numCols = getColumnCount();
for (int i=0; i < numRows; i++) {
System.out.print(" row " + i + ":");
for (int j=0; j < numCols; j++) {
//System.out.print(" " + data[i][j]);
}
System.out.println();
}
System.out.println("--------------------------");
}
}
private static void createAndShowGUI() {
JFrame frame = new JFrame("SqlTable");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
SqlTable newContentPane = new SqlTable();
newContentPane.setOpaque(true);
frame.setContentPane(newContentPane);
frame.pack();
frame.setVisible(true);
}
public static void main(String[] args) {
javax.swing.SwingUtilities.invokeLater(new Runnable() {
public void run() {
createAndShowGUI();
}
});
}
}