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package com.vaadin.tests.design;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertTrue;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import org.junit.Test;
import com.vaadin.ui.Component;
import com.vaadin.ui.Label;
import com.vaadin.ui.declarative.Design;
import com.vaadin.ui.declarative.Design.ComponentFactory;
import com.vaadin.ui.declarative.Design.ComponentMapper;
import com.vaadin.ui.declarative.DesignContext;
public class ComponentMapperTest {
private static final ComponentMapper defaultMapper = Design
.getComponentMapper();
private static final ThreadLocal<ComponentMapper> currentMapper = new ThreadLocal<>();
static {
Design.setComponentMapper(new ComponentMapper() {
@Override
public Component tagToComponent(String tag,
ComponentFactory componentFactory, DesignContext context) {
return getActualMapper().tagToComponent(tag, componentFactory,
context);
}
@Override
public String componentToTag(Component component,
DesignContext context) {
return getActualMapper().componentToTag(component, context);
}
private ComponentMapper getActualMapper() {
ComponentMapper mapper = currentMapper.get();
if (mapper == null) {
mapper = defaultMapper;
}
return mapper;
}
});
}
private final class CustomComponentMapper
extends Design.DefaultComponentMapper {
@Override
public Component tagToComponent(String tag,
ComponentFactory componentFactory, DesignContext context) {
if (tag.startsWith("custom-")) {
ComponentWithCustomTagName component = (ComponentWithCustomTagName) componentFactory
.createComponent(
ComponentWithCustomTagName.class.getName(),
context);
component.tagName = tag;
return component;
} else {
return super.tagToComponent(tag, componentFactory, context);
}
}
@Override
public String componentToTag(Component component,
DesignContext context) {
if (component instanceof ComponentWithCustomTagName) {
ComponentWithCustomTagName withCustomTagName = (ComponentWithCustomTagName) component;
return withCustomTagName.tagName;
} else {
return super.componentToTag(component, context);
}
}
}
public static class ComponentWithCustomTagName extends Label {
private String tagName;
}
@Test
public void testCustomComponentMapperRead() {
currentMapper.set(new CustomComponentMapper());
Component component = Design
.read(new ByteArrayInputStream("<custom-foobar />".getBytes()));
assertTrue(
"<custom-foobar> should resolve "
+ ComponentWithCustomTagName.class.getSimpleName(),
component instanceof ComponentWithCustomTagName);
assertEquals("custom-foobar",
((ComponentWithCustomTagName) component).tagName);
}
@Test
public void testCustomComponentMapperWrite() throws IOException {
currentMapper.set(new CustomComponentMapper());
ComponentWithCustomTagName component = new ComponentWithCustomTagName();
component.tagName = "custom-special";
ByteArrayOutputStream bos = new ByteArrayOutputStream();
Design.write(component, bos);
String writtenDesign = new String(bos.toByteArray());
assertTrue(
"Written design should contain \"<custom-special\", but instead got "
+ writtenDesign,
writtenDesign.contains("<custom-special"));
}
public void cleanup() {
currentMapper.remove();
}
}
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