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93package com.vaadin.tests.components.combobox;
import java.util.ArrayList;
import java.util.List;
import java.util.stream.Collectors;
import java.util.stream.Stream;
import com.vaadin.annotations.Widgetset;
import com.vaadin.server.ClassResource;
import com.vaadin.server.VaadinRequest;
import com.vaadin.tests.components.AbstractTestUI;
import com.vaadin.ui.Button;
import com.vaadin.ui.Button.ClickListener;
import com.vaadin.ui.ComboBox;
@Widgetset("com.vaadin.DefaultWidgetSet")
public class ComboBoxCaptionAndIconUpdate extends AbstractTestUI {
public static class Commit {
private final long id;
private String message;
private ClassResource icon;
Commit(long id, String message, ClassResource icon) {
this.id = id;
this.message = message;
this.icon = icon;
}
public long getId() {
return id;
}
public String getMessage() {
return message;
}
public void setMessage(String message) {
this.message = message;
}
public ClassResource getIcon() {
return icon;
}
public void setIcon(ClassResource icon) {
this.icon = icon;
}
}
List<Commit> backend = new ArrayList<>();
private final ClassResource M_RESOURCE = new ClassResource(
"/com/vaadin/tests/m.gif");
private final ClassResource FI_RESOURCE = new ClassResource(
"/com/vaadin/tests/integration/fi.gif");
@Override
protected void setup(VaadinRequest request) {
ComboBox<Commit> comboBox = new ComboBox<Commit>();
backend = Stream.of(1, 2)
.map(id -> new Commit(id, "Commit ID " + id, M_RESOURCE))
.collect(Collectors.toList());
comboBox.setItems(backend);
comboBox.setValue(backend.get(0));
comboBox.setItemIconGenerator(i -> FI_RESOURCE);
comboBox.setItemCaptionGenerator(i -> "Commit " + i.getId());
comboBox.setWidth("300px");
addComponent(comboBox);
addComponent(createButton("Set Icon Generator", "icon",
e -> comboBox.setItemIconGenerator(Commit::getIcon)));
addComponent(createButton("Set Caption Generator", "caption",
e -> comboBox.setItemCaptionGenerator(Commit::getMessage)));
addComponent(createButton("Edit Message", "editMsg", e -> {
Commit item = backend.get(0);
item.setMessage("Edited message");
comboBox.getDataProvider().refreshItem(item);
}));
addComponent(createButton("Edit Icon", "editIcon", e -> {
Commit item = backend.get(0);
item.setIcon(FI_RESOURCE);
comboBox.getDataProvider().refreshItem(item);
}));
addComponent(createButton("Edit Message and Icon", "editAll", e -> {
Commit item = backend.get(0);
item.setMessage("Edited message and icon");
item.setIcon(FI_RESOURCE);
comboBox.getDataProvider().refreshItem(item);
}));
}
private Button createButton(String caption, String id,
ClickListener listener) {
Button button = new Button(caption, listener);
button.setId(id);
return button;
}
}
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