com.vaadin.flow.data.selection

Interface SelectionModel.Single<C extends Component,T>

Type Parameters:

T - the type of the items to select

C - the component type

All Superinterfaces:

SelectionModel<C,T>, Serializable

All Known Subinterfaces:

GridSingleSelectionModel<T>

All Known Implementing Classes:

AbstractGridSingleSelectionModel

Enclosing interface:

SelectionModel<C extends Component,T>

public static interface SelectionModel.Single<C extends Component,T>
extends SelectionModel<C,T>

A selection model in which at most one item can be selected at a time. Selecting another item deselects the originally selected item.

Nested Class Summary

Nested classes/interfaces inherited from interface com.vaadin.flow.data.selection.SelectionModel

SelectionModel.Multi<C extends Component,T>, SelectionModel.Single<C extends Component,T>

Method Summary

Modifier and Type	Method and Description
default void	deselectAll() Deselects all currently selected items, if any.
default Optional<T>	getFirstSelectedItem() Get first selected data item.
Optional<T>	getSelectedItem() Returns the currently selected item, or an empty optional if no item is selected.
default Set<T>	getSelectedItems() Returns a singleton set of the currently selected item or an empty set if no item is selected.
boolean	isDeselectAllowed() Gets whether it's allowed to deselect the selected row through the UI.
void	select(T item) Selects the given item.
void	setDeselectAllowed(boolean deselectAllowed) Sets whether it's allowed to deselect the selected row through the UI.
default void	setSelectedItem(T item) Sets the current selection to the given item, or clears selection if given null.

Methods inherited from interface com.vaadin.flow.data.selection.SelectionModel

addSelectionListener, deselect, isSelected

Method Detail

select

void select(T item)

Selects the given item. If another item was already selected, that item is deselected.

Specified by:

select in interface SelectionModel<C extends Component,T>

Parameters:

item - the item to select

getSelectedItem

Optional<T> getSelectedItem()

Returns the currently selected item, or an empty optional if no item is selected.

Returns:

an optional of the selected item if any, an empty optional otherwise

setSelectedItem

default void setSelectedItem(T item)

Sets the current selection to the given item, or clears selection if given null.

Parameters:

item - the item to select or null to clear selection

deselectAll

default void deselectAll()

Description copied from interface: SelectionModel

Deselects all currently selected items, if any.

Specified by:

deselectAll in interface SelectionModel<C extends Component,T>

getSelectedItems

default Set<T> getSelectedItems()

Returns a singleton set of the currently selected item or an empty set if no item is selected.

Specified by:

getSelectedItems in interface SelectionModel<C extends Component,T>

Returns:

a singleton set of the selected item if any, an empty set otherwise

See Also:

getSelectedItem()

getFirstSelectedItem

default Optional<T> getFirstSelectedItem()

Description copied from interface: SelectionModel

Get first selected data item.

This is the same as getSelectedItem() in case of single selection and the first selected item from SelectionModel.getSelectedItems() in case of multiselection.

Specified by:

getFirstSelectedItem in interface SelectionModel<C extends Component,T>

Returns:

the first selected item.

setDeselectAllowed

void setDeselectAllowed(boolean deselectAllowed)

Sets whether it's allowed to deselect the selected row through the UI. Deselection is allowed by default.

Parameters:

deselectAllowed - true if the selected row can be deselected without selecting another row instead; otherwise false.

isDeselectAllowed

boolean isDeselectAllowed()

Gets whether it's allowed to deselect the selected row through the UI.

Returns:

true if deselection is allowed; otherwise false