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package com.vaadin.data;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertNull;
import static org.junit.Assert.assertSame;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
import org.junit.Before;
import org.junit.Test;
import com.vaadin.tests.data.bean.Person;
import com.vaadin.tests.data.bean.Sex;
import com.vaadin.ui.Grid;
import com.vaadin.ui.Grid.SelectionMode;
import com.vaadin.ui.SingleSelect;
import com.vaadin.ui.components.grid.SingleSelectionModelImpl;
public class GridAsSingleSelectInBinderTest
extends BinderTestBase<Binder<Person>, Person> {
private class GridWithCustomSingleSelectionModel extends Grid<Sex> {
@Override
public void setSelectionModel(
com.vaadin.ui.components.grid.GridSelectionModel<Sex> model) {
super.setSelectionModel(model);
}
}
private class CustomSingleSelectModel
extends SingleSelectionModelImpl<Sex> {
public void setSelectedFromClient(Sex item) {
setSelectedFromClient(
getGrid().getDataCommunicator().getKeyMapper().key(item));
}
}
private Grid<Sex> grid;
private SingleSelect<Sex> select;
@Before
public void setup() {
binder = new Binder<>();
item = new Person();
grid = new Grid<>();
grid.setItems(Sex.values());
select = grid.asSingleSelect();
}
@Test(expected = IllegalStateException.class)
public void boundGridInBinder_selectionModelChanged_throws() {
grid.setSelectionMode(SelectionMode.MULTI);
select.setValue(Sex.MALE);
}
@Test
public void personBound_bindSelectByShortcut_selectionUpdated() {
item.setSex(Sex.FEMALE);
binder.setBean(item);
binder.bind(select, Person::getSex, Person::setSex);
assertSame(Sex.FEMALE, select.getValue());
}
@Test
public void personBound_bindSelect_selectionUpdated() {
item.setSex(Sex.MALE);
binder.setBean(item);
binder.forField(select).bind(Person::getSex, Person::setSex);
assertSame(Sex.MALE, select.getValue());
}
@Test
public void selectBound_bindPersonWithNullSex_selectedItemNotPresent() {
bindSex();
assertFalse(select.getValue() != null);
}
@Test
public void selectBound_bindPerson_selectionUpdated() {
item.setSex(Sex.FEMALE);
bindSex();
assertSame(Sex.FEMALE, select.getValue());
}
@Test
public void bound_setSelection_beanValueUpdated() {
bindSex();
select.setValue(Sex.MALE);
assertSame(Sex.MALE, item.getSex());
}
@Test
public void bound_deselect_beanValueUpdatedToNull() {
item.setSex(Sex.MALE);
bindSex();
select.setValue(null);
assertNull(item.getSex());
}
@Test
public void unbound_changeSelection_beanValueNotUpdated() {
item.setSex(Sex.UNKNOWN);
bindSex();
binder.removeBean();
select.setValue(Sex.FEMALE);
assertSame(Sex.UNKNOWN, item.getSex());
}
@Test
public void addValueChangeListener_selectionUpdated_eventTriggeredForSelect() {
GridWithCustomSingleSelectionModel grid = new GridWithCustomSingleSelectionModel();
CustomSingleSelectModel model = new CustomSingleSelectModel();
grid.setSelectionModel(model);
grid.setItems(Sex.values());
select = grid.asSingleSelect();
List<Sex> selected = new ArrayList<>();
List<Sex> oldSelected = new ArrayList<>();
List<Boolean> userOriginated = new ArrayList<>();
select.addValueChangeListener(event -> {
selected.add(event.getValue());
oldSelected.add(event.getOldValue());
userOriginated.add(event.isUserOriginated());
assertSame(grid, event.getComponent());
// cannot compare that the event source is the select since a new
// SingleSelect wrapper object has been created for the event
assertSame(select.getValue(), event.getValue());
});
grid.getSelectionModel().select(Sex.UNKNOWN);
// simulates client side selection
model.setSelectedFromClient(Sex.MALE);
grid.getSelectionModel().select(Sex.MALE); // NOOP
grid.getSelectionModel().deselect(Sex.UNKNOWN); // NOOP
// simulates deselect from client side
model.setSelectedFromClient(null);
grid.getSelectionModel().select(Sex.FEMALE);
assertEquals(Arrays.asList(Sex.UNKNOWN, Sex.MALE, null, Sex.FEMALE),
selected);
assertEquals(Arrays.asList(null, Sex.UNKNOWN, Sex.MALE, null),
oldSelected);
assertEquals(Arrays.asList(false, true, true, false), userOriginated);
}
protected void bindSex() {
binder.forField(select).bind(Person::getSex, Person::setSex);
binder.setBean(item);
}
}
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