package com.vaadin.tests.components.table;
import java.util.ArrayList;
import java.util.Date;
import java.util.List;
import com.vaadin.data.Container.Filter;
import com.vaadin.data.Item;
import com.vaadin.data.util.BeanItemContainer;
import com.vaadin.tests.components.TestBase;
import com.vaadin.ui.Button;
import com.vaadin.ui.Button.ClickEvent;
import com.vaadin.ui.HorizontalLayout;
import com.vaadin.ui.Label;
import com.vaadin.ui.Table;
/**
* Test for #8291 and #7666: NegativeArraySizeException when Table scrolled to
* the end and its size reduced.
*/
public class TableReduceContainerSize extends TestBase {
@Override
protected void setup() {
addComponent(new TestView());
}
private static class DecimateFilter implements Filter {
@Override
public boolean passesFilter(Object itemId, Item item)
throws UnsupportedOperationException {
return ((((TestObject) itemId).property3 % 10) == 0);
}
@Override
public boolean appliesToProperty(Object propertyId) {
return true;
}
}
private static class TestView extends HorizontalLayout {
private Filter filter = null;
private boolean reduceData;
private TestView() {
final Table table = new Table();
List<TestObject> data = createData(1000);
final BeanItemContainer<TestObject> container = new BeanItemContainer<TestObject>(
TestObject.class, data) {
@Override
public int size() {
if (reduceData) {
return 100;
} else {
return super.size();
}
}
};
table.setContainerDataSource(container);
addComponent(table);
final Label label = new Label();
addComponent(label);
Button button = new Button("Click");
button.addListener(new Button.ClickListener() {
@Override
public void buttonClick(ClickEvent event) {
try {
reduceData = !reduceData;
table.refreshRowCache();
label.setValue("Index: "
+ table.getCurrentPageFirstItemIndex());
} catch (Exception e) {
label.setValue("Exception: "
+ e.getClass().getSimpleName());
}
}
});
addComponent(button);
Button button2 = new Button("Filter");
button2.addListener(new Button.ClickListener() {
@Override
public void buttonClick(ClickEvent event) {
try {
if (filter != null) {
container.removeAllContainerFilters();
filter = null;
} else {
filter = new DecimateFilter();
container.addContainerFilter(filter);
}
table.refreshRowCache();
label.setValue("Index: "
+ table.getCurrentPageFirstItemIndex());
} catch (Exception e) {
label.setValue("Exception: "
+ e.getClass().getSimpleName());
}
}
});
addComponent(button2);
}
}
private static List<TestObject> createData(int count) {
ArrayList<TestObject> data = new ArrayList<TestObject>(count);
for (int i = 0; i < count; i++) {
data.add(new TestObject("string-" + i, new Date(), i));
}
return data;
}
public static class TestObject {
private String property1;
private Date property2;
private Integer property3;
public TestObject(String property1, Date property2, Integer property3) {
this.property1 = property1;
this.property2 = property2;
this.property3 = property3;
}
public String getProperty1() {
return property1;
}
public Date getProperty2() {
return property2;
}
public Integer getProperty3() {
return property3;
}
}
@Override
protected String getDescription() {
return "Table throws NegativeArraySizeException if container size is reduced to less than current scroll position";
}
@Override
protected Integer getTicketNumber() {
return 8291;
}
}