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package com.vaadin.tests.components.grid;
import java.util.Arrays;
import java.util.Collection;
import java.util.List;
import com.vaadin.data.ValueProvider;
import com.vaadin.server.VaadinRequest;
import com.vaadin.tests.components.AbstractTestUI;
import com.vaadin.ui.Button;
import com.vaadin.ui.Grid;
import com.vaadin.ui.Label;
import com.vaadin.ui.VerticalLayout;
public class GridDetailsUpdateItems extends AbstractTestUI {
@Override
protected void setup(VaadinRequest request) {
addComponent(createExamplleLayout());
}
private VerticalLayout createExamplleLayout() {
Collection<String> firstCollection = Arrays.asList("Hello", ",",
"world!");
Collection<String> secondCollection = Arrays.asList("My", "name", "is",
"Sarah");
Collection<String> thirdCollection = Arrays.asList("red", "blue");
Collection<String> fourthCollection = Arrays.asList("spring", "summer",
"autumn", "winter");
VerticalLayout mainLayout = new VerticalLayout();
Grid<Collection<String>> grid = new Grid<>();
grid.setDetailsGenerator(collection -> {
VerticalLayout detailLayout = new VerticalLayout();
collection.forEach(
item -> detailLayout.addComponent(new Label(item)));
return detailLayout;
});
ValueProvider<Collection<String>, String> valueProvider = collection -> String
.join(" ", collection);
grid.addColumn(valueProvider).setCaption("Header");
List<Collection<String>> itemsInitial = Arrays.asList(firstCollection,
secondCollection, thirdCollection, fourthCollection);
grid.setItems(itemsInitial);
for (Collection<String> tmp : itemsInitial) {
grid.setDetailsVisible(tmp, true);
}
mainLayout.addComponent(grid);
Button changeButton1 = new Button("Change with details", event -> {
List<Collection<String>> itemsOverwrite = Arrays
.asList(secondCollection, fourthCollection);
grid.setItems(itemsOverwrite);
for (Collection<String> tmp : itemsOverwrite) {
grid.setDetailsVisible(tmp, true);
}
});
mainLayout.addComponent(changeButton1);
Button changeButton2 = new Button("Change without details", event -> {
List<Collection<String>> itemsOverwrite = Arrays
.asList(secondCollection, fourthCollection);
grid.setItems(itemsOverwrite);
});
mainLayout.addComponent(changeButton2);
return mainLayout;
}
@Override
protected Integer getTicketNumber() {
return 12211;
}
@Override
protected String getTestDescription() {
return "Details should update and not break the positioning "
+ "when the item set is changed.";
}
}
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