How to check all check boxes at a click of a button
- by LivingThing
I am new to Swing, UI and MVC
I have created a code based on MVC. Now my problem is that that in the controller part i have an actioneventlistener which listens to different button clicks. Out of all those buttons i have "select all" and "de-select all". In my view i have a table, one of the column of that table contains "check boxes". Now, when i click the "select-all" button i want to check all the check boxes and with "de-select all" i want to uncheck all of them.
Below is my code which is not working. Please tell me what am i doing wrong here. Also, if someone knows a more elagent way please share. Thanks
In my view
public class CustomerSelectorDialogUI extends JFrame{
public CustomerSelectorDialogUI(TestApplicationUI ownerView, DummyCustomerStore dCStore, boolean modality) {
//super(ownerView, modality);
setTitle("[=] Customer Selection Dialog [=]");
//setDefaultCloseOperation(JFrame.DO_NOTHING_ON_CLOSE);
custSelectPanel = new JPanel();
buttonPanel = new JPanel();
selectAllButton = new JButton(" Select All ");
clearAllButton = new JButton(" Clear All ");
applyButton = new JButton(" Apply ");
cancelButton = new JButton(" Cancel ");
PopulateAndShow(dCStore, Boolean.FALSE);
}
public void PopulateAndShow(DummyCustomerStore dCStore, Boolean select) {
List data = new ArrayList();
for (Customer customer : dCStore.getAllCustomers()) {
Object record[] = new Object[COLUMN_COUNT];
record[0] = (select == false) ? Boolean.FALSE : Boolean.TRUE;
record[1] = Integer.toString(customer.customerId);
record[2] = customer.fullName;
data.add(record);
}
tModel = new TableModel(data);
// In the above for loop accoring to user input (i.e click on check all or
// uncheck all) i have tried to update the data. As it can be seen that i
// have a condition for record[0].
//After the loop, here i have tried several options like validate(). repaint but to no avail
customerTable = new JTable(tModel);
scrollPane = new JScrollPane(customerTable);
setContentPane(this.createContentPane());
setSize(480, 580);
setResizable(false);
setVisible(true);
}
private JPanel createContentPane() {
custSelectPanel.setLayout(null);
customerTable.setDragEnabled(false);
customerTable.setFillsViewportHeight(true);
scrollPane.setLocation(10, 10);
scrollPane.setSize(450,450);
custSelectPanel.add(scrollPane);
buttonPanel.setLayout(null);
buttonPanel.setLocation(10, 480);
buttonPanel.setSize(450, 100);
custSelectPanel.add(buttonPanel);
selectAllButton.setLocation(0, 0);
selectAllButton.setSize(100, 40);
buttonPanel.add(selectAllButton);
clearAllButton.setLocation(110, 0);
clearAllButton.setSize(100, 40);
buttonPanel.add(clearAllButton);
applyButton.setLocation(240, 0);
applyButton.setSize(100, 40);
buttonPanel.add(applyButton);
cancelButton.setLocation(350, 0);
cancelButton.setSize(100, 40);
buttonPanel.add(cancelButton);
return custSelectPanel;
}
}
Table Model
private class TableModel extends AbstractTableModel {
private List data;
public TableModel(List data) {
this.data = data;
}
private String[] columnNames = {"Selected ",
"Customer Id ",
"Customer Name "
};
public int getColumnCount() {
return COLUMN_COUNT;
}
public int getRowCount() {
return data == null ? 0 : data.size();
}
public String getColumnName(int col) {
return columnNames[col];
}
public void setValueAt(Object value, int rowIndex, int columnIndex) {
getRecord(rowIndex)[columnIndex] = value;
super.fireTableCellUpdated(rowIndex, columnIndex);
}
private Object[] getRecord(int rowIndex) {
return (Object[]) data.get(rowIndex);
}
public Object getValueAt(int rowIndex, int columnIndex) {
return getRecord(rowIndex)[columnIndex];
}
public Class getColumnClass(int columnIndex) {
if (data == null || data.size() == 0) {
return Object.class;
}
Object o = getValueAt(0, columnIndex);
return o == null ? Object.class : o.getClass();
}
public boolean isCellEditable(int row, int col) {
if (col > 0) {
return false;
} else {
return true;
}
}
}
}
A Views Action Listener
class CustomerSelectorUIListener implements ActionListener{
CustomerSelectorDialogUI custSelectView;
Controller controller;
public CustomerSelectorUIListener (Controller controller, CustomerSelectorDialogUI custSelectView) {
this.custSelectView = custSelectView;
this.controller = controller;
}
@Override
public void actionPerformed(ActionEvent e) {
String actionEvent = e.getActionCommand();
else if ( actionEvent.equals( "clearAllButton" ) )
{
controller.checkButtonControl(false);
}
else if ( actionEvent.equals( "selectAllButton" ) )
{
controller.checkButtonControl(true);
}
}
}
Main Controller
public class Controller implements ActionListener{
CustomerSelectorDialogUI selectUI;
DummyCustomerStore store;
public Controller( DummyCustomerStore store, TestApplicationUI appUI )
{
this.store = store;
this.appUI = appUI;
appUI.ButtonListener( this );
}
@Override
public void actionPerformed(ActionEvent event) {
String viewAction = event.getActionCommand();
if (viewAction.equals("TEST")) {
selectUI = new CustomerSelectorDialogUI(appUI, store, true);
selectUI.showTextActionListeners(new CustomerSelectorUIListener( this, selectUI ) );
selectUI.setVisible( true );
}
}
public void checkButtonControl (Boolean checkAll) {
selectUI.PopulateAndShow(store, checkAll);
}
}
