Examples of com.vaadin.data.Item

com.vaadin.data.Item

Provides a mechanism for handling a set of Properties, each associated to a locally unique non-null identifier. The interface is split into subinterfaces to enable a class to implement only the functionalities it needs.
@author Vaadin Ltd @since 3.0

        });
        update(beans);
        layout.addComponent(table);


        Object first = table.getItemIds().iterator().next();
        Item item = table.getItem(first);
        form.setItemDataSource(item);


        form.setCaption("Edit Task");
        form.setVisibleItemProperties(VISIBLE_COLUMNS);
        form.setImmediate(true);
        form.addListener(new Property.ValueChangeListener() {
            public void valueChange(ValueChangeEvent event) {
                @SuppressWarnings("unchecked")
                BeanItem<Task> item = (BeanItem<Task>) form.getItemDataSource();
                taskService.updateTask(item.getBean());
            }
        });
        layout.addComponent(form);
    }

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        w.addCloseListener(new CloseListener() {


            @Override
            public void windowClose(CloseEvent e) {
                Item item = addWindowAgain.addItem(w);
                addWindowAgain.setItemCaption(w, "Window "
                        + w.getData().toString());
            }
        });

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        container.addContainerProperty(ICON_PROPERTY, Resource.class, null);
        container.addContainerProperty(INDEX_PROPERTY, Integer.class, null);
        container
                .addContainerProperty(DESCRIPTION_PROPERTY, String.class, null);
        for (int i = 1; i < size + 1; i++) {
            Item item = container.addItem(i);
            item.getItemProperty(CAPTION_PROPERTY).setValue(
                    sg.nextString(true) + " " + sg.nextString(false));
            item.getItemProperty(INDEX_PROPERTY).setValue(i);
            item.getItemProperty(DESCRIPTION_PROPERTY).setValue(
                    sg.nextString(true) + " " + sg.nextString(false) + " "
                            + sg.nextString(false));
            item.getItemProperty(ICON_PROPERTY).setValue(testIcon.get());
        }
        container.getItem(container.getIdByIndex(0))
                .getItemProperty(ICON_PROPERTY).setValue(testIcon.get());


        if (hierarchical) {
            for (int i = 1; i < size + 1; i++) {
                for (int j = 1; j < 5; j++) {
                    String id = i + " -> " + j;
                    Item child = container.addItem(id);
                    child.getItemProperty(CAPTION_PROPERTY).setValue(
                            sg.nextString(true) + " " + sg.nextString(false));
                    child.getItemProperty(ICON_PROPERTY).setValue(
                            testIcon.get());
                    ((Hierarchical) container).setParent(id, i);


                    for (int k = 1; k < 6; k++) {
                        String id2 = id + " -> " + k;
                        child = container.addItem(id2);
                        child.getItemProperty(CAPTION_PROPERTY).setValue(
                                sg.nextString(true) + " "
                                        + sg.nextString(false));
                        child.getItemProperty(ICON_PROPERTY).setValue(
                                testIcon.get());
                        ((Hierarchical) container).setParent(id2, id);


                        for (int l = 1; l < 5; l++) {
                            String id3 = id2 + " -> " + l;
                            child = container.addItem(id3);
                            child.getItemProperty(CAPTION_PROPERTY).setValue(
                                    sg.nextString(true) + " "
                                            + sg.nextString(false));
                            child.getItemProperty(ICON_PROPERTY).setValue(
                                    testIcon.get());
                            ((Hierarchical) container).setParent(id3, id2);
                        }
                    }
                }

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    }


    @Override
    protected Object findPropertyId(java.lang.reflect.Field memberField) {
        String fieldName = memberField.getName();
        Item dataSource = getItemDataSource();
        if (dataSource != null && dataSource.getItemProperty(fieldName) != null) {
            return fieldName;
        } else {
            String minifiedFieldName = minifyFieldName(fieldName);
            try {
                return getFieldName(beanType, minifiedFieldName);

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        select.addContainerProperty(CAPTION_PROPERTY_ID, String.class, "");
        select.setItemCaptionPropertyId(CAPTION_PROPERTY_ID);
        @SuppressWarnings("unchecked")
        EnumSet<?> enumSet = EnumSet.allOf(enumClass);
        for (Object r : enumSet) {
            Item newItem = select.addItem(r);
            newItem.getItemProperty(CAPTION_PROPERTY_ID).setValue(r.toString());
        }
    }

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     * @throws BindException
     *             If the property was not found in the item or no item has been
     *             set
     */
    protected Property getItemProperty(Object propertyId) throws BindException {
        Item item = getItemDataSource();
        if (item == null) {
            throw new BindException("Could not lookup property with id "
                    + propertyId + " as no item has been set");
        }
        Property<?> p = item.getItemProperty(propertyId);
        if (p == null) {
            throw new BindException("A property with id " + propertyId
                    + " was not found in the item");
        }
        return p;

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            throw new SearchException(
                    "Property id type for field '"
                            + fieldName
                            + "' could not be determined. No item data source has been set.");
        }
        Item dataSource = getItemDataSource();
        if (dataSource.getItemProperty(fieldName) != null) {
            return fieldName;
        } else {
            String minifiedFieldName = minifyFieldName(fieldName);
            for (Object itemPropertyId : dataSource.getItemPropertyIds()) {
                if (itemPropertyId instanceof String) {
                    String itemPropertyName = (String) itemPropertyId;
                    if (minifiedFieldName
                            .equals(minifyFieldName(itemPropertyName))) {
                        return itemPropertyName;

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        container.addContainerProperty("property1", String.class, "foo");
        container.addContainerProperty("property2", Integer.class, 1210);
        container.addContainerProperty("property3", String.class, "bar");


        for (int i = 0; i < 100; i++) {
            Item item = container.addItem("Item " + i);
            item.getItemProperty("property1").setValue("This is item " + i);
        }
    }

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        }


        public void loadTable(int itemNumber) {
            table.removeAllItems();
            for (int j = 0; j < itemNumber; j++) {
                Item rowItem = table.addItem(j);
                if (rowItem != null) {
                    for (int i = 0; i < columns.length; i++) {
                        rowItem.getItemProperty(columns[i]).setValue(
                                "Value" + j);
                    }
                }
            }
        }

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        addComponent(row);


        OptionGroup options = new OptionGroup("Choose one, explicit width");
        options.setWidth("200px");
        options.addItem("Option One");
        Item two = options
                .addItem("Option Two, with a longer caption that should wrap when the components width is explicitly set.");
        options.addItem("Option Three");
        options.select("Option One");
        options.setItemIcon("Option One", testIcon.get());
        options.setItemIcon(two, testIcon.get());

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