com.vaadin.flow.component.select.data

Class SelectDataView<T>

java.lang.Object

com.vaadin.flow.data.provider.AbstractDataView<T>

com.vaadin.flow.component.select.data.SelectDataView<T>

Type Parameters:

T - item type

All Implemented Interfaces:

DataView<T>, Serializable

public class SelectDataView<T>
extends AbstractDataView<T>

Implementation of generic data view for Select.

Since:

See Also:

Serialized Form

Field Summary

Fields inherited from class com.vaadin.flow.data.provider.AbstractDataView

component, dataProviderSupplier, NULL_IDENTIFIER_ERROR_MESSAGE, NULL_ITEM_ERROR_MESSAGE

Constructor Summary

Constructors

Constructor and Description
SelectDataView(SerializableSupplier<DataProvider<T,?>> dataProviderSupplier, Select<T> select) Constructs a new DataView.
SelectDataView(SerializableSupplier<DataProvider<T,?>> dataProviderSupplier, Select<T> select, SerializableConsumer<IdentifierProvider<T>> identifierChangedCallback) Constructs a new DataView.

Method Summary

Modifier and Type	Method and Description
T	getItem(int index) Gets the item at the given index from the data available to the component.
protected Class<?>	getSupportedDataProviderType() Returns supported DataProvider type for this DataView.
void	setIdentifierProvider(IdentifierProvider<T> identifierProvider) Sets an identifier provider, which returns an identifier for the given item.

Methods inherited from class com.vaadin.flow.data.provider.AbstractDataView

addItemCountChangeListener, equals, getIdentifierProvider, getItems, refreshAll, refreshItem, verifyDataProviderType

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

SelectDataView

public SelectDataView(SerializableSupplier<DataProvider<T,?>> dataProviderSupplier,
                      Select<T> select)

Constructs a new DataView.

Parameters:

dataProviderSupplier - data provider supplier

select - select instance for this DataView

SelectDataView

public SelectDataView(SerializableSupplier<DataProvider<T,?>> dataProviderSupplier,
                      Select<T> select,
                      SerializableConsumer<IdentifierProvider<T>> identifierChangedCallback)

Constructs a new DataView.

Parameters:

dataProviderSupplier - data provider supplier

select - select instance for this DataView

identifierChangedCallback - callback method which should be called when identifierProvider is changed

Method Detail

getItem

public T getItem(int index)

Description copied from interface: DataView

Gets the item at the given index from the data available to the component. Data is filtered and sorted the same way as in the component.

Parameters:

index - item index number

Returns:

item on index

getSupportedDataProviderType

protected Class<?> getSupportedDataProviderType()

Description copied from class: AbstractDataView

Returns supported DataProvider type for this DataView.

Specified by:

getSupportedDataProviderType in class AbstractDataView<T>

Returns:

supported data provider type

setIdentifierProvider

public void setIdentifierProvider(IdentifierProvider<T> identifierProvider)

Description copied from interface: DataView

Sets an identifier provider, which returns an identifier for the given item. The identifier is used for comparing the equality of items. Usage example: dataView.setIdentifiedProvider(Item::getId);.

Specified by:

setIdentifierProvider in interface DataView<T>

Overrides:

setIdentifierProvider in class AbstractDataView<T>

Parameters:

identifierProvider - function that returns the non-null identifier for a given item