@Override
    public Component generateBlock(final SimpleOpportunity opportunity, int blockIndex) {
      CssLayout beanBlock = new CssLayout();
      beanBlock.addStyleName("bean-block");
      beanBlock.setWidth("350px");

      VerticalLayout blockContent = new VerticalLayout();
      MHorizontalLayout blockTop = new MHorizontalLayout().withWidth("100%");
      CssLayout iconWrap = new CssLayout();
      iconWrap.setStyleName("icon-wrap");
      FontIconLabel opportunityIcon =
          new FontIconLabel(CrmAssetsManager.getAsset(CrmTypeConstants.OPPORTUNITY));
      iconWrap.addComponent(opportunityIcon);
      blockTop.addComponent(iconWrap);

      VerticalLayout opportunityInfo = new VerticalLayout();
      opportunityInfo.setSpacing(true);

      MButton btnDelete = new MButton(FontAwesome.TRASH_O);
      btnDelete.addClickListener(
          new Button.ClickListener() {
            @Override
            public void buttonClick(Button.ClickEvent clickEvent) {
              ConfirmDialogExt.show(
                  UI.getCurrent(),
                  AppContext.getMessage(
                      GenericI18Enum.DIALOG_DELETE_TITLE, AppContext.getSiteName()),
                  AppContext.getMessage(GenericI18Enum.DIALOG_DELETE_SINGLE_ITEM_MESSAGE),
                  AppContext.getMessage(GenericI18Enum.BUTTON_YES),
                  AppContext.getMessage(GenericI18Enum.BUTTON_NO),
                  new ConfirmDialog.Listener() {
                    private static final long serialVersionUID = 1L;

                    @Override
                    public void onClose(ConfirmDialog dialog) {
                      if (dialog.isConfirmed()) {
                        ContactService contactService =
                            ApplicationContextUtil.getSpringBean(ContactService.class);
                        ContactOpportunity associateOpportunity = new ContactOpportunity();
                        associateOpportunity.setContactid(contact.getId());
                        associateOpportunity.setOpportunityid(opportunity.getId());
                        contactService.removeContactOpportunityRelationship(
                            associateOpportunity, AppContext.getAccountId());
                        ContactOpportunityListComp.this.refresh();
                      }
                    }
                  });
            }
          });

      btnDelete.addStyleName(UIConstants.BUTTON_ICON_ONLY);

      blockContent.addComponent(btnDelete);
      blockContent.setComponentAlignment(btnDelete, Alignment.TOP_RIGHT);

      Label opportunityName =
          new Label(
              String.format(
                  "Name: <a href='%s%s'>%s</a>",
                  SiteConfiguration.getSiteUrl(AppContext.getUser().getSubdomain()),
                  CrmLinkGenerator.generateCrmItemLink(
                      CrmTypeConstants.OPPORTUNITY, opportunity.getId()),
                  opportunity.getOpportunityname()),
              ContentMode.HTML);

      opportunityInfo.addComponent(opportunityName);

      Label opportunityAmount =
          new Label("Amount: " + (opportunity.getAmount() != null ? opportunity.getAmount() : ""));
      if (opportunity.getCurrency() != null && opportunity.getAmount() != null) {
        opportunityAmount.setValue(
            opportunityAmount.getValue() + opportunity.getCurrency().getSymbol());
      }
      opportunityInfo.addComponent(opportunityAmount);

      Label opportunitySaleStage =
          new Label(
              "Sale Stage: "
                  + (opportunity.getSalesstage() != null ? opportunity.getSalesstage() : ""));
      opportunityInfo.addComponent(opportunitySaleStage);

      ELabel opportunityExpectedCloseDate =
          new ELabel(
                  "Expected Closed Date: "
                      + AppContext.formatPrettyTime(opportunity.getExpectedcloseddate()))
              .withDescription(AppContext.formatDate(opportunity.getExpectedcloseddate()));
      opportunityInfo.addComponent(opportunityExpectedCloseDate);

      blockTop.with(opportunityInfo).expand(opportunityInfo);
      blockContent.addComponent(blockTop);

      blockContent.setWidth("100%");

      beanBlock.addComponent(blockContent);
      return beanBlock;
    }
  /** tests house. This one has things like nillable and required properties. */
  public void testHouse() throws Exception {
    House house = new House();
    Rectangle base = new Rectangle();
    base.setColor(Color.BLUE);
    base.setHeight(80);
    base.setWidth(80);
    base.setLineStyle(LineStyle.solid);
    base.setId("baseid");
    house.setBase(base);
    Rectangle door = new Rectangle();
    door.setColor(Color.YELLOW);
    door.setHeight(35);
    door.setWidth(20);
    door.setLineStyle(LineStyle.solid);
    door.setId("doorId");
    house.setDoor(door);
    Circle knob = new Circle();
    knob.setColor(Color.RED);
    knob.setId("knobId");
    knob.setLineStyle(LineStyle.dashed);
    knob.setRadius(2);
    house.setDoorKnob(knob);
    Label label1 = new Label();
    label1.setValue("bachelor-pad");
    Label label2 = new Label();
    label2.setValue("single-family-dwelling");
    house.setLabels(Arrays.asList(label1, label2));
    Triangle roof = new Triangle();
    roof.setBase(84);
    roof.setHeight(20);
    roof.setColor(Color.YELLOW);
    roof.setLineStyle(LineStyle.solid);
    house.setRoof(roof);
    Rectangle window = new Rectangle();
    window.setColor(Color.YELLOW);
    window.setHeight(10);
    window.setWidth(10);
    window.setLineStyle(LineStyle.solid);
    house.setWindows(Arrays.asList(window));
    house.setConstructedDate(new DateTime(3L));
    house.setType(XmlQNameEnumUtil.toQName(HouseType.brick));
    house.setStyle(XmlQNameEnumUtil.toQName(HouseStyle.latin));
    house.setColor(XmlQNameEnumUtil.toURI(HouseColor.blue));

    JacksonJaxbJsonProvider provider = new JacksonJaxbJsonProvider();
    ObjectMapper houseMapper = provider.locateMapper(House.class, MediaType.APPLICATION_JSON_TYPE);
    ObjectMapper clientMapper = new ObjectMapper();
    ByteArrayOutputStream out = new ByteArrayOutputStream();
    houseMapper.writeValue(out, house);
    ByteArrayInputStream in = new ByteArrayInputStream(out.toByteArray());
    shapes.json.structures.House clientHouse =
        clientMapper.readValue(in, shapes.json.structures.House.class);

    shapes.json.Rectangle clientBase = clientHouse.getBase();
    assertSame(shapes.json.Color.BLUE, clientBase.getColor());
    assertSame(shapes.json.LineStyle.solid, clientBase.getLineStyle());
    assertEquals(80, clientBase.getHeight());
    assertEquals(80, clientBase.getWidth());
    assertEquals("baseid", clientBase.getId());
    shapes.json.Rectangle clientDoor = clientHouse.getDoor();
    assertSame(shapes.json.Color.YELLOW, clientDoor.getColor());
    assertSame(shapes.json.LineStyle.solid, clientDoor.getLineStyle());
    assertEquals(35, clientDoor.getHeight());
    assertEquals(20, clientDoor.getWidth());
    assertEquals("doorId", clientDoor.getId());
    shapes.json.Circle clientKnob = clientHouse.getDoorKnob();
    assertSame(shapes.json.Color.RED, clientKnob.getColor());
    assertSame(shapes.json.LineStyle.dashed, clientKnob.getLineStyle());
    assertEquals(2, clientKnob.getRadius());
    assertEquals("knobId", clientKnob.getId());
    List<String> labels = Arrays.asList("bachelor-pad", "single-family-dwelling");
    clientHouse.getLabels().size();
    for (Object l : clientHouse.getLabels()) {
      shapes.json.Label label = (shapes.json.Label) l;
      assertTrue(labels.contains(label.getValue()));
    }
    shapes.json.Triangle clientRoof = clientHouse.getRoof();
    assertSame(shapes.json.Color.YELLOW, clientRoof.getColor());
    assertSame(shapes.json.LineStyle.solid, clientRoof.getLineStyle());
    assertNull(clientRoof.getId());
    assertEquals(84, clientRoof.getBase());
    assertEquals(20, clientRoof.getHeight());
    assertEquals(1, clientHouse.getWindows().size());
    shapes.json.Rectangle clientWindow = (shapes.json.Rectangle) clientHouse.getWindows().get(0);
    assertSame(shapes.json.Color.YELLOW, clientWindow.getColor());
    assertSame(shapes.json.LineStyle.solid, clientWindow.getLineStyle());
    assertEquals(10, clientWindow.getHeight());
    assertEquals(10, clientWindow.getWidth());
    assertNull(clientWindow.getId());
    assertEquals(new Date(3L), clientHouse.getConstructedDate());

    out = new ByteArrayOutputStream();
    clientMapper.writeValue(out, clientHouse);
    house = houseMapper.readValue(new ByteArrayInputStream(out.toByteArray()), House.class);
    base = house.getBase();
    assertSame(Color.BLUE, base.getColor());
    assertSame(LineStyle.solid, base.getLineStyle());
    assertEquals(80, base.getHeight());
    assertEquals(80, base.getWidth());
    assertEquals("baseid", base.getId());
    door = house.getDoor();
    assertSame(Color.YELLOW, door.getColor());
    assertSame(LineStyle.solid, door.getLineStyle());
    assertEquals(35, door.getHeight());
    assertEquals(20, door.getWidth());
    assertEquals("doorId", door.getId());
    knob = house.getDoorKnob();
    assertSame(Color.RED, knob.getColor());
    assertSame(LineStyle.dashed, knob.getLineStyle());
    assertEquals(2, knob.getRadius());
    assertEquals("knobId", knob.getId());
    labels = Arrays.asList("bachelor-pad", "single-family-dwelling");
    house.getLabels().size();
    for (Object l : house.getLabels()) {
      Label label = (Label) l;
      assertTrue(labels.contains(label.getValue()));
    }
    roof = house.getRoof();
    assertSame(Color.YELLOW, roof.getColor());
    assertSame(LineStyle.solid, roof.getLineStyle());
    assertNull(roof.getId());
    assertEquals(84, roof.getBase());
    assertEquals(20, roof.getHeight());
    assertEquals(1, house.getWindows().size());
    window = house.getWindows().get(0);
    assertSame(Color.YELLOW, window.getColor());
    assertSame(LineStyle.solid, window.getLineStyle());
    assertEquals(10, window.getHeight());
    assertEquals(10, window.getWidth());
    assertNull(window.getId());
    assertEquals(new DateTime(3L), house.getConstructedDate());
    assertEquals(XmlQNameEnumUtil.toQName(HouseType.brick), house.getType());
    assertEquals(XmlQNameEnumUtil.toQName(HouseStyle.latin), house.getStyle());
    assertEquals(XmlQNameEnumUtil.toURI(HouseColor.blue), house.getColor());

    // now let's check the nillable and required stuff:

    // roof is required, but nillable.
    clientHouse.setRoof(null);
    out = new ByteArrayOutputStream();
    clientMapper.writeValue(out, clientHouse);
    house = houseMapper.readValue(new ByteArrayInputStream(out.toByteArray()), House.class);
    base = house.getBase();
    assertSame(Color.BLUE, base.getColor());
    assertSame(LineStyle.solid, base.getLineStyle());
    assertEquals(80, base.getHeight());
    assertEquals(80, base.getWidth());
    assertEquals("baseid", base.getId());
    door = house.getDoor();
    assertSame(Color.YELLOW, door.getColor());
    assertSame(LineStyle.solid, door.getLineStyle());
    assertEquals(35, door.getHeight());
    assertEquals(20, door.getWidth());
    assertEquals("doorId", door.getId());
    knob = house.getDoorKnob();
    assertSame(Color.RED, knob.getColor());
    assertSame(LineStyle.dashed, knob.getLineStyle());
    assertEquals(2, knob.getRadius());
    assertEquals("knobId", knob.getId());
    labels = Arrays.asList("bachelor-pad", "single-family-dwelling");
    house.getLabels().size();
    for (Object l : house.getLabels()) {
      Label label = (Label) l;
      assertTrue(labels.contains(label.getValue()));
    }
    roof = house.getRoof();
    assertNull(roof);
    assertEquals(1, house.getWindows().size());
    window = house.getWindows().get(0);
    assertSame(Color.YELLOW, window.getColor());
    assertSame(LineStyle.solid, window.getLineStyle());
    assertEquals(10, window.getHeight());
    assertEquals(10, window.getWidth());
    assertNull(window.getId());

    // windows are nillable...
    clientHouse.setWindows(null);
    out = new ByteArrayOutputStream();
    clientMapper.writeValue(out, clientHouse);
    house = houseMapper.readValue(new ByteArrayInputStream(out.toByteArray()), House.class);
    base = house.getBase();
    assertSame(Color.BLUE, base.getColor());
    assertSame(LineStyle.solid, base.getLineStyle());
    assertEquals(80, base.getHeight());
    assertEquals(80, base.getWidth());
    assertEquals("baseid", base.getId());
    door = house.getDoor();
    assertSame(Color.YELLOW, door.getColor());
    assertSame(LineStyle.solid, door.getLineStyle());
    assertEquals(35, door.getHeight());
    assertEquals(20, door.getWidth());
    assertEquals("doorId", door.getId());
    knob = house.getDoorKnob();
    assertSame(Color.RED, knob.getColor());
    assertSame(LineStyle.dashed, knob.getLineStyle());
    assertEquals(2, knob.getRadius());
    assertEquals("knobId", knob.getId());
    labels = Arrays.asList("bachelor-pad", "single-family-dwelling");
    house.getLabels().size();
    for (Object l : house.getLabels()) {
      Label label = (Label) l;
      assertTrue(labels.contains(label.getValue()));
    }
    roof = house.getRoof();
    assertNull(roof);
    assertNull(house.getWindows());
  }