Examples of com.vaadin.data.Property

com.vaadin.data.Property

The Property is a simple data object that contains one typed value. This interface contains methods to inspect and modify the stored value and its type, and the object's read-only state.

The Property also defines the events ReadOnlyStatusChangeEvent and ValueChangeEvent, and the associated listener and notifier interfaces.

The Property.Viewer interface should be used to attach the Property to an external data source. This way the value in the data source can be inspected using the Property interface.

The Property.editor interface should be implemented if the value needs to be changed through the implementing class.
@param T type of values of the property @author Vaadin Ltd @since 3.0

            throw new BindException(
                    "The given field is not part of this FieldBinder");
        }


        TransactionalPropertyWrapper<?> wrapper = null;
        Property fieldDataSource = field.getPropertyDataSource();
        if (fieldDataSource instanceof TransactionalPropertyWrapper) {
            wrapper = (TransactionalPropertyWrapper<?>) fieldDataSource;
            fieldDataSource = ((TransactionalPropertyWrapper<?>) fieldDataSource)
                    .getWrappedProperty();

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            @Override
            public void buttonClick(Button.ClickEvent event) {
                // Set ItemProperty.COLUMN2 for all selected values of table
                Collection selectedIds = (Collection) table.getValue();
                for (final Object itemId : selectedIds) {
                    final Property p = table.getItem(itemId).getItemProperty(
                            ItemProperty.COLUMN2);
                    if (p.getValue() instanceof String) {
                        p.setValue(null);
                    } else {
                        p.setValue("updated");
                    }
                }
            }
        }));

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        }


        for (int i = 0; i < 100; i++) {
            Item item = container.addItem("item " + i);
            for (int j = 0; j < ids.length; ++j) {
                Property itemProperty = item.getItemProperty(ids[j]);
                if (types[j] == String.class) {
                    itemProperty.setValue(ids[j].toString() + i);
                } else if (types[j] == BaseClass.class) {
                    itemProperty.setValue(new BaseClass("base" + i));
                } else if (types[j] == DerivedClass.class) {
                    itemProperty.setValue(new DerivedClass("derived" + i));
                } else if (types[j] == int.class) {
                    // FIXME can't set values because the int is autoboxed into
                    // an Integer and not unboxed prior to set


                    // itemProperty.setValue(i);

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    }


    public void testIntegerDataSource() {
        VaadinSession.setCurrent(new AlwaysLockedVaadinSession(null));
        Label l = new Label("Foo");
        Property ds = new MethodProperty<Integer>(Person.createTestPerson1(),
                "age");
        l.setPropertyDataSource(ds);
        assertEquals(String.valueOf(Person.createTestPerson1().getAge()),
                l.getValue());
    }

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    public void testValueChangeFiredWhenSettingPropertyDataSource() {
        // setup
        Label underTest = new Label();


        Property mockProperty = EasyMock.createMock(Property.class);


        ValueChangeListener mockListener = createStrictMock(ValueChangeListener.class);
        // record
        mockListener
                .valueChange(anyObject(com.vaadin.data.Property.ValueChangeEvent.class));


        expect(mockProperty.getType()).andReturn(String.class).atLeastOnce();
        expect(mockProperty.getValue()).andReturn("Any").atLeastOnce();


        // test


        replay(mockListener, mockProperty);
        underTest.addValueChangeListener(mockListener);

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    }


    @Override
    public Field createField(Container container, Object itemId,
            Object propertyId, Component uiContext) {
        Property containerProperty = container.getContainerProperty(itemId,
                propertyId);
        Class<?> type = containerProperty.getType();
        Field<?> field = createFieldByPropertyType(type);
        field.setCaption(createCaptionByPropertyId(propertyId));
        return field;
    }

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                caption = itemId.toString();
            }
            break;


        case ITEM_CAPTION_MODE_PROPERTY:
            final Property p = getContainerProperty(itemId,
                    getItemCaptionPropertyId());
            if (p != null) {
                caption = p.toString();
            }
            break;
        }


        // All items must have some captions

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        if (getItemIconPropertyId() == null) {
            return null;
        }


        final Property ip = getContainerProperty(itemId,
                getItemIconPropertyId());
        if (ip == null) {
            return null;
        }
        final Object icon = ip.getValue();
        if (icon instanceof Resource) {
            return (Resource) icon;
        }


        return null;

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                    captionChangeNotifiers.add(i);
                }
                Collection<?> pids = i.getItemPropertyIds();
                if (pids != null) {
                    for (Iterator<?> it = pids.iterator(); it.hasNext();) {
                        Property p = i.getItemProperty(it.next());
                        if (p != null
                                && p instanceof Property.ValueChangeNotifier) {
                            ((Property.ValueChangeNotifier) p)
                                    .addListener(getCaptionChangeListener());
                            captionChangeNotifiers.add(p);
                        }
                    }


                }
                break;
            case ITEM_CAPTION_MODE_PROPERTY:
                final Property p = getContainerProperty(itemId,
                        getItemCaptionPropertyId());
                if (p != null && p instanceof Property.ValueChangeNotifier) {
                    ((Property.ValueChangeNotifier) p)
                            .addListener(getCaptionChangeListener());
                    captionChangeNotifiers.add(p);

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        final int count = metadata.getColumnCount();
        final ArrayList<String> list = new ArrayList<String>(count);
        for (int i = 1; i <= count; i++) {
            final String columnName = metadata.getColumnName(i);
            list.add(columnName);
            final Property p = getContainerProperty(new Integer(1), columnName);
            propertyTypes.put(columnName,
                    p == null ? Object.class : p.getType());
        }
        propertyIds = Collections.unmodifiableCollection(list);
    }

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