/**
 * Form that divides submit-events to inital and resubmit. 
 * @author igor vaynberg 
 */
abstract class ResubmitSafeForm extends Form
{
    private boolean submitted;
    private static final long serialVersionUID = 1L;

    public ResubmitSafeForm(final String id)
    {
        super(id);
    }

    public ResubmitSafeForm(final String id, final IModel model)
    {
        super(id, model);
    }

    protected abstract void onInitialSubmit();

    protected abstract void onResubmit();

    protected final void onSubmitted()
    {
        if (!this.submitted)
        {
            onInitialSubmit();
            this.submitted = true;
        }
        else
        {
            onResubmit();
        }
    }
}