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package com.vaadin.v7.data.util;
import static org.junit.Assert.assertTrue;
import java.util.ArrayList;
import java.util.List;
import org.junit.Test;
import com.vaadin.v7.data.fieldgroup.FieldGroup;
import com.vaadin.v7.ui.TextField;
/**
* Test verifying that TransactionalPropertyWrapper removes it's listener from
* wrapped Property
*
* @since 7.1.15
* @author Vaadin Ltd
*/
public class TransactionalPropertyWrapperTest {
@SuppressWarnings("serial")
public class TestingProperty<T extends Object>
extends ObjectProperty<Object> {
private List<ValueChangeListener> listeners = new ArrayList<ValueChangeListener>();
public TestingProperty(Object value) {
super(value);
}
@Override
public void addValueChangeListener(ValueChangeListener listener) {
super.addValueChangeListener(listener);
listeners.add(listener);
}
@Override
public void removeValueChangeListener(ValueChangeListener listener) {
super.removeValueChangeListener(listener);
if (listeners.contains(listener)) {
listeners.remove(listener);
}
}
public boolean hasListeners() {
return !listeners.isEmpty();
}
}
private final TextField nameField = new TextField("Name");
private final TextField ageField = new TextField("Age");
private final TextField unboundField = new TextField("No FieldGroup");
private final TestingProperty<String> unboundProp = new TestingProperty<String>(
"Hello World");
private final PropertysetItem item = new PropertysetItem();
@Test
public void fieldGroupBindAndUnbind() {
item.addItemProperty("name",
new TestingProperty<String>("Just some text"));
item.addItemProperty("age", new TestingProperty<String>("42"));
final FieldGroup binder = new FieldGroup(item);
binder.setBuffered(false);
for (int i = 0; i < 2; ++i) {
binder.bind(nameField, "name");
binder.bind(ageField, "age");
unboundField.setPropertyDataSource(unboundProp);
assertTrue("No listeners in Properties", fieldsHaveListeners(true));
binder.unbind(nameField);
binder.unbind(ageField);
unboundField.setPropertyDataSource(null);
assertTrue("Listeners in Properties after unbinding",
fieldsHaveListeners(false));
}
}
/**
* Check that all listeners have same hasListeners() response
*
* @param expected
* expected response
* @return true if all are the same as expected. false if not
*/
private boolean fieldsHaveListeners(boolean expected) {
for (Object id : item.getItemPropertyIds()) {
TestingProperty<?> itemProperty = (TestingProperty<?>) item
.getItemProperty(id);
if (itemProperty.hasListeners() != expected) {
return false;
}
}
return unboundProp.hasListeners() == expected;
}
}
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