GWT CellTable-Need to have two buttons in last single cell of each row

Question

I am using CellTable to add columns to it. It works fine when I add rows and single data on each cell.

It has header like Name ,Age, Address with rows below it which

Answer 1

There are two ways to achieve that:

1. Subclass AbstractCell and implement the render method to create two buttons and handle its events (see here for more details).
2. Use a CompositeCell to add two ActionCells

Second approach is easier and cleaner. Here is the code for that:

public void onModuleLoad() {
    CellTable table = new CellTable();

    List> cells = new LinkedList>();
    cells.add(new ActionHasCell("Edit", new Delegate() {

        @Override
        public void execute(Person object) {
           // EDIT CODE
        }
    }));
    cells.add(new ActionHasCell("Delete", new Delegate() {

        @Override
        public void execute(Person object) {
            // DELETE CODE
        }
    }));

    CompositeCell cell = new CompositeCell(cells);
    table.addColumn(new TextColumn() {

        @Override
        public String getValue(Person object) {
            return object.getName()
        }
    }, "Name");

    // ADD Cells for Age and Address

    table.addColumn(new Column(cell) {

        @Override
        public Person getValue(Person object) {
            return object;
        }
    }, "Actions");


}

private class ActionHasCell implements HasCell {
    private ActionCell cell;

    public ActionHasCell(String text, Delegate delegate) {
        cell = new ActionCell(text, delegate);
    }

    @Override
    public Cell getCell() {
        return cell;
    }

    @Override
    public FieldUpdater getFieldUpdater() {
        return null;
    }

    @Override
    public Person getValue(Person object) {
        return object;
    }
}