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package com.vaadin.data;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertNotNull;
import static org.junit.Assert.assertNull;
import java.util.HashMap;
import java.util.Locale;
import java.util.Map;
import java.util.Optional;
import java.util.stream.Stream;
import org.junit.Test;
import com.vaadin.server.Setter;
import com.vaadin.ui.TextField;
public class BinderCustomPropertySetTest {
public static class MapPropertyDefinition
implements PropertyDefinition<Map<String, String>, String> {
private MapPropertySet propertySet;
private String name;
public MapPropertyDefinition(MapPropertySet propertySet, String name) {
this.propertySet = propertySet;
this.name = name;
}
@Override
public ValueProvider<Map<String, String>, String> getGetter() {
return map -> map.get(name);
}
@Override
public Optional<Setter<Map<String, String>, String>> getSetter() {
return Optional.of((map, value) -> {
if (value == null) {
map.remove(name);
} else {
map.put(name, value);
}
});
}
@Override
public Class<String> getType() {
return String.class;
}
public Class<?> getPropertyHolderType() {
return Map.class;
}
@Override
public String getName() {
return name;
}
@Override
public PropertySet<Map<String, String>> getPropertySet() {
return propertySet;
}
@Override
public String getCaption() {
return name.toUpperCase(Locale.ROOT);
}
}
public static class MapPropertySet
implements PropertySet<Map<String, String>> {
@Override
public Stream<PropertyDefinition<Map<String, String>, ?>> getProperties() {
return Stream.of("one", "two", "three").map(this::createProperty);
}
@Override
public Optional<PropertyDefinition<Map<String, String>, ?>> getProperty(
String name) {
return Optional.of(createProperty(name));
}
private PropertyDefinition<Map<String, String>, ?> createProperty(
String name) {
return new MapPropertyDefinition(this, name);
}
}
public static class InstanceFields {
private TextField one;
private TextField another;
}
@Test
public void testBindByString() {
TextField field = new TextField();
Map<String, String> map = new HashMap<>();
Binder<Map<String, String>> binder = Binder
.withPropertySet(new MapPropertySet());
binder.bind(field, "key");
binder.setBean(map);
field.setValue("value");
assertEquals(
"Field value should propagate to the corresponding key in the map",
"value", map.get("key"));
}
@Test
public void testBindInstanceFields() {
Map<String, String> map = new HashMap<>();
Binder<Map<String, String>> binder = Binder
.withPropertySet(new MapPropertySet());
InstanceFields instanceFields = new InstanceFields();
binder.bindInstanceFields(instanceFields);
assertNotNull(
"Field corresponding to supported property name should be bound",
instanceFields.one);
assertNull(
"Field corresponding to unsupported property name should be ignored",
instanceFields.another);
binder.setBean(map);
instanceFields.one.setValue("value");
assertEquals(
"Field value should propagate to the corresponding key in the map",
"value", map.get("one"));
}
}
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