com.vaadin.ui.components.grid

Class NoSelectionModel<T>

java.lang.Object

com.vaadin.server.AbstractClientConnector

com.vaadin.server.AbstractExtension

com.vaadin.ui.components.grid.NoSelectionModel<T>

Type Parameters:

T - the type of items in the grid

All Implemented Interfaces:

SelectionModel<T>, MethodEventSource, ClientConnector, Extension, Connector, GridSelectionModel<T>, Serializable

public class NoSelectionModel<T>
extends AbstractExtension
implements GridSelectionModel<T>

Selection model that doesn't allow selecting anything from the grid.

Since:

8.0

Author:

Vaadin Ltd

See Also:

Serialized Form

Nested Class Summary

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

SelectionModel.Multi<T>, SelectionModel.Single<T>

Nested classes/interfaces inherited from interface com.vaadin.server.ClientConnector

ClientConnector.AttachEvent, ClientConnector.AttachListener, ClientConnector.ConnectorErrorEvent, ClientConnector.DetachEvent, ClientConnector.DetachListener

Constructor Summary

Constructors

Constructor and Description
NoSelectionModel()

Method Summary

Modifier and Type	Method and Description
Registration	addSelectionListener(SelectionListener<T> listener) Adds a generic listener to this selection model, accepting both single and multiselection events.
void	deselect(T item) Deselects the given item.
void	deselectAll() Deselects all currently selected items, if any.
Optional<T>	getFirstSelectedItem() Get first selected data item.
Set<T>	getSelectedItems() Returns an immutable set of the currently selected items.
boolean	isUserSelectionAllowed() Checks if the user is allowed to change the selection.
void	select(T item) Selects the given item.
void	setUserSelectionAllowed(boolean allowed) Sets whether the user is allowed to change the selection.

Methods inherited from class com.vaadin.server.AbstractExtension

extend, getParent, getSupportedParentType, remove, setParent

Methods inherited from class com.vaadin.server.AbstractClientConnector

addAttachListener, addDetachListener, addExtension, addListener, addListener, addListener, addMethodInvocationToQueue, attach, beforeClientResponse, createState, detach, encodeState, equals, fireEvent, getAllChildrenIterable, getConnectorId, getErrorHandler, getExtensions, getListeners, getResource, getRpcManager, getRpcProxy, getSession, getState, getState, getStateType, getUI, handleConnectorRequest, hashCode, hasListeners, isAttached, isConnectorEnabled, isThis, markAsDirty, markAsDirtyRecursive, registerRpc, registerRpc, removeAttachListener, removeDetachListener, removeExtension, removeListener, removeListener, removeListener, removeListener, requestRepaint, requestRepaintAll, retrievePendingRpcCalls, setErrorHandler, setResource, updateDiffstate

Methods inherited from class java.lang.Object

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

Methods inherited from interface com.vaadin.ui.components.grid.GridSelectionModel

remove

Methods inherited from interface com.vaadin.data.SelectionModel

isSelected

Methods inherited from interface com.vaadin.server.Extension

setParent

Methods inherited from interface com.vaadin.server.ClientConnector

addAttachListener, addDetachListener, attach, beforeClientResponse, detach, encodeState, getErrorHandler, getExtensions, getParent, getRpcManager, getStateType, getUI, handleConnectorRequest, isAttached, isConnectorEnabled, markAsDirty, markAsDirtyRecursive, removeAttachListener, removeDetachListener, removeExtension, requestRepaint, requestRepaintAll, retrievePendingRpcCalls, setErrorHandler

Methods inherited from interface com.vaadin.shared.Connector

getConnectorId

Constructor Detail

NoSelectionModel

public NoSelectionModel()

Method Detail

getSelectedItems

public Set<T> getSelectedItems()

Description copied from interface: SelectionModel

Returns an immutable set of the currently selected items. It is safe to invoke other SelectionModel methods while iterating over the set.

Implementation note: the iteration order of the items in the returned set should be well-defined and documented by the implementing class.

Specified by:

getSelectedItems in interface SelectionModel<T>

Returns:

the items in the current selection, not null

getFirstSelectedItem

public Optional<T> getFirstSelectedItem()

Description copied from interface: SelectionModel

Get first selected data item.

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

Specified by:

getFirstSelectedItem in interface SelectionModel<T>

Returns:

the first selected item.

select

public void select(T item)

Description copied from interface: SelectionModel

Selects the given item. Depending on the implementation, may cause other items to be deselected. If the item is already selected, does nothing.

Specified by:

select in interface SelectionModel<T>

Parameters:

item - the item to select, not null

deselect

public void deselect(T item)

Description copied from interface: SelectionModel

Deselects the given item. If the item is not currently selected, does nothing.

Specified by:

deselect in interface SelectionModel<T>

Parameters:

item - the item to deselect, not null

deselectAll

public void deselectAll()

Description copied from interface: SelectionModel

Deselects all currently selected items, if any.

Specified by:

deselectAll in interface SelectionModel<T>

addSelectionListener

public Registration addSelectionListener(SelectionListener<T> listener)

Description copied from interface: SelectionModel

Adds a generic listener to this selection model, accepting both single and multiselection events.

Specified by:

addSelectionListener in interface SelectionModel<T>

Parameters:

listener - the listener to add

Returns:

a registration handle for removing the listener

setUserSelectionAllowed

public void setUserSelectionAllowed(boolean allowed)

Description copied from interface: GridSelectionModel

Sets whether the user is allowed to change the selection.

The check is done only for the client side actions. It doesn't affect selection requests sent from the server side.

Specified by:

setUserSelectionAllowed in interface GridSelectionModel<T>

Parameters:

allowed - true if the user is allowed to change the selection, false otherwise

isUserSelectionAllowed

public boolean isUserSelectionAllowed()

Description copied from interface: GridSelectionModel

Checks if the user is allowed to change the selection.

The check is done only for the client side actions. It doesn't affect selection requests sent from the server side.

Specified by:

isUserSelectionAllowed in interface GridSelectionModel<T>

Returns:

true if the user is allowed to change the selection, false otherwise