@Override
protected final JComponent buildEditPanel(final WindowInterface window) {
FormLayout layout = new FormLayout("10dlu,p,p,20dlu,30dlu,50dlu", "");
DefaultFormBuilder builder = new DefaultFormBuilder(layout);
builder.appendRow(new RowSpec("bottom:20dlu"));
builder.setLeadingColumnOffset(1);
builder.nextColumn();
builder.append("Kundenr:", textFieldCustomerNr);
builder.nextLine();
builder.append("Fornavn:", textFieldFirstName, 2);
builder.append("Etternavn:", textFieldLastName, 2);
builder.nextLine();
builder.append(
ButtonBarFactory.buildCenteredBar(buttonSave, buttonCancel), 5);
builder.appendRow(new RowSpec("5dlu"));
return new IconFeedbackPanel(validationResultModel, builder.getPanel());
}