gwt - celltable - adding extra row

Question

enter code hereI have a celltable and the columns contains some numbers. I want to add an extra row at the end of the table which will hold the total for each column. Is the

Answer 1

public void addNewRow(){                

    List<Contact> newContactLst = Arrays.asList(new Contact("TEST",
              "Sample"));

    int numRows = table.getRowCount();

    table.setRowCount(numRows+1);

    table.setRowData(numRows,newContactLst);

}

Answer 2

Also I would suggest that you use the footer-Argument when you add the column: addColumn(Column col, Header header)

Answer 3

When you mean totals im not quite sure what you mean but this is similiar to your code but I have added a button that will add the row you howeve can take this out and just add the row.

/**
 * Entry point classes define <code>onModuleLoad()</code>.
 */
public class TestGwt implements EntryPoint {

     private static class Contact {
            private final String address;
            private final String name;

            public Contact(String name, String address) {
              this.name = name;
              this.address = address;
            }
          }

    private static List<Contact> CONTACTS = Arrays.asList(new Contact("John",
    "123 Fourth Road"), new Contact("Mary", "222 Lancer Lane"), new Contact(
    "Zander", "94 Road Street"));
    /**
     * This is the entry point method.
     */
    public void onModuleLoad() {
         // Create a CellTable.
        final CellTable<Contact> table = new CellTable<Contact>();

        // Create name column.
        TextColumn<Contact> nameColumn = new TextColumn<Contact>() {
          @Override
          public String getValue(Contact contact) {
            return contact.name;
          }
        };

        // Make the name column sortable.
        nameColumn.setSortable(true);

        // Create address column.
        TextColumn<Contact> addressColumn = new TextColumn<Contact>() {
          @Override
          public String getValue(Contact contact) {
            return contact.address;
          }
        };

        // Add the columns.
        table.addColumn(nameColumn, "Name");
        table.addColumn(addressColumn, "Address");

        // Create a data provider.
        ListDataProvider<Contact> dataProvider = new ListDataProvider<Contact>();

        // Connect the table to the data provider.
        dataProvider.addDataDisplay(table);

        // Add the data to the data provider, which automatically pushes it to the
        // widget.
        final List<Contact> list = dataProvider.getList();
        for (Contact contact : CONTACTS) {
          list.add(contact);
        }

        // We know that the data is sorted alphabetically by default.
        table.getColumnSortList().push(nameColumn);

        Button add = new Button("Add Row");
        add.addClickHandler(new ClickHandler() {

            @Override
            public void onClick(ClickEvent event) {
                list.add(new Contact(Integer.toString(table.getRowCount()),Integer.toString(table.getRowCount())));
            }
        });


        // Add it to the root panel.
        RootPanel.get().add(table);
        RootPanel.get().add(add);

      }



}

Hopefully this will help I am not sure what you mean by total though anything can be added to that final field in the Guise of a contact even though it isnt neccessarily one , the better approach would be to use Generics for the data provider but this will achieve same effects with minimal code