Examples with ComboBox com.vaadin.flow.component.combobox.ComboBox used on opensource projects

Example 11 with ComboBox

use of com.vaadin.flow.component.combobox.ComboBox in project flow-components by vaadin.

the class FilteringPage method createComboBoxWithMultiplePagesAndSourceSwitchers.

private void createComboBoxWithMultiplePagesAndSourceSwitchers() {
    ComboBox<String> comboBox = new ComboBox<>();
    comboBox.setId(COMBOBOX_WITH_FILTERED_ITEMS_ID);
    List<String> items = LazyLoadingPage.generateStrings(500);
    ComboBoxLazyDataView<String> dataView = comboBox.setItems(query -> items.stream().filter(item -> item.contains(query.getFilter().orElse(""))).skip(query.getOffset()).limit(query.getLimit()), query -> (int) items.stream().filter(item -> item.contains(query.getFilter().orElse(""))).count());
    NativeButton switchToUnknown = new NativeButton("Switch To Unknown Item Count", click -> dataView.setItemCountUnknown());
    switchToUnknown.setId(SWITCH_TO_UNKNOWN_ITEM_COUNT_BUTTON_ID);
    NativeButton switchToInMemory = new NativeButton("Switch To In-memory Items", click -> comboBox.setItems(items));
    switchToInMemory.setId(SWITCH_TO_IN_MEMORY_ITEMS_BUTTON_ID);
    add(new Div(), comboBox, switchToUnknown, switchToInMemory);
}

Example 12 with ComboBox

use of com.vaadin.flow.component.combobox.ComboBox in project flow-components by vaadin.

the class LazyLoadingPage method createDataProviderWithCustomItemFilter.

private void createDataProviderWithCustomItemFilter() {
    addTitle("ListDataProvider with custom item filter");
    ComboBox<Person> comboBox = new ComboBox<>();
    comboBox.setId("custom-filter");
    List<Person> people = IntStream.range(0, 500).mapToObj(i -> new Person("Person", i)).collect(Collectors.toList());
    ListDataProvider<Person> personDataProvider = new ListDataProvider<>(people);
    comboBox.setRenderer(new ComponentRenderer<Div, Person>(person -> {
        return new Div(new H4(person.getName()), new Label("Born: " + person.getBorn()));
    }));
    comboBox.setDataProvider((person, filter) -> String.valueOf(person.getBorn()).startsWith(filter), personDataProvider);
    add(comboBox);
}

Example 13 with ComboBox

use of com.vaadin.flow.component.combobox.ComboBox in project flow-components by vaadin.

the class LazyLoadingPage method createListDataProviderWithStrings.

private void createListDataProviderWithStrings() {
    addTitle("ListDataProvider with strings");
    ComboBox<String> comboBox = new ComboBox<>();
    comboBox.setId("lazy-strings");
    List<String> items = generateStrings(1000);
    comboBox.setDataProvider(DataProvider.ofCollection(items));
    comboBox.addValueChangeListener(e -> message.setText(e.getValue()));
    NativeButton setButton = new NativeButton("set value", e -> {
        comboBox.setValue(items.get(10));
    });
    setButton.setId("set-value");
    NativeButton disableButton = new NativeButton("set disabled", e -> {
        comboBox.setEnabled(false);
    });
    disableButton.setId("disable");
    NativeButton setCurrentValueButton = new NativeButton("set current value", e -> {
        comboBox.setValue(comboBox.getValue());
    });
    setCurrentValueButton.setId("set-current-value");
    add(comboBox, setButton, disableButton, setCurrentValueButton);
}

Example 14 with ComboBox

use of com.vaadin.flow.component.combobox.ComboBox in project flow-components by vaadin.

the class LazyLoadingPage method createCallbackDataProvider.

private void createCallbackDataProvider() {
    addTitle("CallbackDataProvider");
    ComboBox<String> comboBox = new ComboBox<>();
    comboBox.setId("callback-dataprovider");
    AtomicInteger sizeRequestCount = new AtomicInteger(0);
    Span sizeRequestCountSpan = new Span("0");
    sizeRequestCountSpan.setId("callback-dataprovider-size-request-count");
    CallbackDataProvider<String, String> dataProvider = new CallbackDataProvider<String, String>(query -> IntStream.range(query.getOffset(), query.getOffset() + query.getLimit()).mapToObj(i -> "Item " + i), query -> {
        sizeRequestCountSpan.setText(String.valueOf(sizeRequestCount.incrementAndGet()));
        return 210;
    });
    comboBox.setDataProvider(dataProvider);
    add(comboBox, sizeRequestCountSpan);
}

Example 15 with ComboBox

use of com.vaadin.flow.component.combobox.ComboBox in project flow-components by vaadin.

the class LazyLoadingPage method createComboBoxWithDisabledLazyLoading.

private void createComboBoxWithDisabledLazyLoading() {
    addTitle("ComboBox with disabled lazy loading");
    ComboBox<Integer> comboBox = new ComboBox<>(100);
    comboBox.setId("disabled-lazy-loading");
    // Having a number of items less than or equal than the page size will
    // disable lazy-loading
    List<Integer> items = IntStream.range(0, 100).boxed().collect(Collectors.toList());
    comboBox.setItems(items);
    NativeButton enableLazyLoading = new NativeButton("Enable lazy loading", // Reducing page size should enable lazy-loading
    event -> comboBox.setPageSize(50));
    enableLazyLoading.setId("enable-lazy-loading");
    add(comboBox, enableLazyLoading);
}