ComboBoxDataSourceChange.java

package com.vaadin.tests.components.combobox;

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.v7.data.Property;
import com.vaadin.v7.data.Property.ValueChangeEvent;
import com.vaadin.v7.data.util.IndexedContainer;
import com.vaadin.v7.ui.ComboBox;
import com.vaadin.v7.ui.Table;

@SuppressWarnings("serial")
public class ComboBoxDataSourceChange extends TestBase {

    private ComboBox cb2;

    @Override
    protected void setup() {
        final IndexedContainer ds1 = new IndexedContainer();
        // ds1.addContainerProperty("caption", String.class, "");
        for (int i = 0; i < 32; i++) {
            ds1.addItem("ds1-" + i);
        }

        final IndexedContainer ds2 = new IndexedContainer();
        // ds2.addContainerProperty("caption", String.class, "");
        for (int i = 0; i < 32; i++) {
            ds2.addItem("ds2-" + i);
        }

        HorizontalLayout hl = new HorizontalLayout();
        hl.setWidth("100%");

        cb2 = new ComboBox();
        cb2.setImmediate(true);
        hl.addComponent(cb2);
        HorizontalLayout state = new HorizontalLayout();
        state.setSpacing(true);
        hl.addComponent(state);

        final Label currentValue = new Label();
        currentValue.setCaption("Current Value:");
        currentValue.setSizeUndefined();
        final Label currentDS = new Label();
        currentDS.setCaption("Current DS:");
        currentDS.setSizeUndefined();
        state.addComponent(currentValue);
        state.addComponent(currentDS);

        Table t = new Table("ds1");
        t.setRowHeaderMode(Table.ROW_HEADER_MODE_ID);
        t.setContainerDataSource(ds1);
        state.addComponent(t);

        Button b = new Button("Use ds1");
        b.addClickListener(new Button.ClickListener() {

            @Override
            public void buttonClick(ClickEvent event) {
                cb2.setContainerDataSource(ds1);
                currentDS.setValue("ds1");
            }
        });
        state.addComponent(b);

        t = new Table("ds2");
        t.setContainerDataSource(ds2);
        t.setRowHeaderMode(Table.ROW_HEADER_MODE_ID);
        state.addComponent(t);

        b = new Button("Use ds2");
        b.addClickListener(new Button.ClickListener() {

            @Override
            public void buttonClick(ClickEvent event) {
                cb2.setContainerDataSource(ds2);
                currentDS.setValue("ds2");
            }
        });
        state.addComponent(b);

        addComponent(hl);

        cb2.addListener(new Property.ValueChangeListener() {
            @Override
            public void valueChange(ValueChangeEvent event) {
                currentValue.setValue(
                        String.valueOf(event.getProperty().getValue()));
            }
        });
    }

    @Override
    protected String getDescription() {
        return "A test for combobox and its container changes.";
    }

    @Override
    protected Integer getTicketNumber() {
        // TODO should be list of integers applies for #5279
        return 4607;
    }

}