com.vaadin.ui

Class CheckBoxGroup<T>

java.lang.Object

com.vaadin.server.AbstractClientConnector

com.vaadin.ui.AbstractComponent

com.vaadin.ui.AbstractListing<T>

com.vaadin.ui.AbstractMultiSelect<T>

com.vaadin.ui.CheckBoxGroup<T>

Type Parameters:

T - item type

All Implemented Interfaces:

HasDataProvider<T>, HasItems<T>, HasValue<Set<T>>, ContextClickEvent.ContextClickNotifier, FieldEvents.BlurNotifier, FieldEvents.FocusNotifier, MethodEventSource, ClientConnector, Sizeable, Connector, Component, Component.Focusable, MultiSelect<T>, Serializable

public class CheckBoxGroup<T>
extends AbstractMultiSelect<T>
implements FieldEvents.FocusNotifier, FieldEvents.BlurNotifier, HasDataProvider<T>

A group of Checkboxes. Individual checkboxes are made from items supplied by a DataProvider. Checkboxes may have captions and icons.

Since:

8.0

Author:

Vaadin Ltd

See Also:

Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from class com.vaadin.ui.AbstractListing

AbstractListing.AbstractListingExtension<T>

Nested classes/interfaces inherited from interface com.vaadin.ui.Component

Component.ErrorEvent, Component.Event, Component.Focusable, Component.Listener

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

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

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

Sizeable.Unit

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

HasValue.ValueChangeEvent<V>, HasValue.ValueChangeListener<V>

Field Summary

Fields inherited from class com.vaadin.ui.AbstractComponent

DESIGN_ATTR_PLAIN_TEXT

Fields inherited from interface com.vaadin.server.Sizeable

SIZE_UNDEFINED, UNITS_CM, UNITS_EM, UNITS_EX, UNITS_INCH, UNITS_MM, UNITS_PERCENTAGE, UNITS_PICAS, UNITS_PIXELS, UNITS_POINTS

Constructor Summary

Constructors

Constructor and Description
CheckBoxGroup() Constructs a new CheckBoxGroup.
CheckBoxGroup(String caption) Constructs a new CheckBoxGroup with caption.
CheckBoxGroup(String caption, Collection<T> items) Constructs a new CheckBoxGroup with caption and DataProvider containing given items.
CheckBoxGroup(String caption, DataProvider<T,?> dataProvider) Constructs a new CheckBoxGroup with caption and DataProvider.

Method Summary

Modifier and Type	Method and Description
Registration	addBlurListener(FieldEvents.BlurListener listener) Adds a BlurListener to the Component which gets fired when a Field loses keyboard focus.
Registration	addFocusListener(FieldEvents.FocusListener listener) Adds a FocusListener to the Component which gets fired when a Field receives keyboard focus.
DataProvider<T,?>	getDataProvider() Returns the source of data items used by this listing.
DescriptionGenerator<T>	getItemDescriptionGenerator() Gets the item description generator.
SerializablePredicate<T>	getItemEnabledProvider() Returns the item enabled provider for this multiselect.
IconGenerator<T>	getItemIconGenerator() Gets the currently used item icon generator.
protected CheckBoxGroupState	getState() Returns the shared state bean with information to be sent from the server to the client.
protected CheckBoxGroupState	getState(boolean markAsDirty) Returns the shared state for this connector.
boolean	isHtmlContentAllowed() Checks whether captions are interpreted as html or plain text.
protected T	readItem(org.jsoup.nodes.Element child, Set<T> selected, DesignContext context) Reads an Item from a design and inserts it into the data source.
protected void	readItems(org.jsoup.nodes.Element design, DesignContext context) Reads the data source items from the design.
void	setDataProvider(DataProvider<T,?> dataProvider) Sets the data provider for this listing.
void	setHtmlContentAllowed(boolean htmlContentAllowed) Sets whether html is allowed in the item captions.
void	setItemDescriptionGenerator(DescriptionGenerator<T> descriptionGenerator) Sets the description generator that is used for generating descriptions for items.
void	setItemEnabledProvider(SerializablePredicate<T> itemEnabledProvider) Sets the item enabled predicate for this multiselect.
void	setItemIconGenerator(IconGenerator<T> itemIconGenerator) Sets the item icon generator that is used to produce custom icons for shown items.
protected org.jsoup.nodes.Element	writeItem(org.jsoup.nodes.Element design, T item, DesignContext context) Writes a data source Item to a design.

Methods inherited from class com.vaadin.ui.AbstractMultiSelect

addSelectionListener, addValueChangeListener, deselect, deselect, deselectAll, getCustomAttributes, getItemCaptionGenerator, getSelectedItems, getValue, isReadOnly, isRequiredIndicatorVisible, isSelected, select, setItemCaptionGenerator, setReadOnly, setRequiredIndicatorVisible, setValue, updateSelection, updateSelection

Methods inherited from class com.vaadin.ui.AbstractListing

addDataGenerator, deserializeDeclarativeRepresentation, doReadDesign, doWriteDesign, focus, getDataCommunicator, getTabIndex, internalGetDataProvider, internalSetDataProvider, internalSetDataProvider, readDesign, readItem, removeDataGenerator, serializeDeclarativeRepresentation, setTabIndex, writeDesign, writeItems

Methods inherited from class com.vaadin.ui.AbstractComponent

addContextClickListener, addListener, addShortcutListener, addStyleName, attach, beforeClientResponse, detach, findAncestor, fireComponentErrorEvent, fireComponentEvent, getActionManager, getCaption, getComponentError, getData, getDebugId, getDescription, getErrorMessage, getHeight, getHeightUnits, getIcon, getId, getLocale, getParent, getPrimaryStyleName, getStyleName, getWidth, getWidthUnits, isCaptionAsHtml, isConnectorEnabled, isEnabled, isOrHasAncestor, isResponsive, isVisible, removeContextClickListener, removeListener, removeShortcutListener, removeStyleName, setCaption, setCaptionAsHtml, setComponentError, setData, setDebugId, setDescription, setDescription, setEnabled, setHeight, setHeight, setHeightUndefined, setIcon, setId, setLocale, setParent, setPrimaryStyleName, setResponsive, setSizeFull, setSizeUndefined, setStyleName, setVisible, setWidth, setWidth, setWidthUndefined

Methods inherited from class com.vaadin.server.AbstractClientConnector

addAttachListener, addDetachListener, addExtension, addListener, addListener, addListener, addMethodInvocationToQueue, createState, encodeState, equals, fireEvent, getAllChildrenIterable, getConnectorId, getErrorHandler, getExtensions, getListeners, getResource, getRpcManager, getRpcProxy, getSession, getStateType, getUI, handleConnectorRequest, hashCode, hasListeners, isAttached, 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.data.HasDataProvider

setItems

Methods inherited from interface com.vaadin.data.HasItems

setItems, setItems

Methods inherited from interface com.vaadin.ui.Component

addListener, addStyleName, addStyleNames, attach, getCaption, getDescription, getIcon, getId, getLocale, getParent, getPrimaryStyleName, getStyleName, getUI, isEnabled, isVisible, readDesign, removeListener, removeStyleName, removeStyleNames, setCaption, setEnabled, setIcon, setId, setParent, setPrimaryStyleName, setStyleName, setStyleName, setVisible, writeDesign

Methods inherited from interface com.vaadin.server.ClientConnector

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

Methods inherited from interface com.vaadin.shared.Connector

getConnectorId

Methods inherited from interface com.vaadin.server.Sizeable

getHeight, getHeightUnits, getWidth, getWidthUnits, setHeight, setHeight, setHeightUndefined, setSizeFull, setSizeUndefined, setWidth, setWidth, setWidthUndefined

Methods inherited from interface com.vaadin.ui.MultiSelect

deselect, getEmptyValue, select

Methods inherited from interface com.vaadin.data.HasValue

clear, getDefaultValidator, getOptionalValue, isEmpty

Constructor Detail

CheckBoxGroup

public CheckBoxGroup(String caption)

Constructs a new CheckBoxGroup with caption.

Parameters:

caption - caption text

CheckBoxGroup

public CheckBoxGroup(String caption,
                     DataProvider<T,?> dataProvider)

Constructs a new CheckBoxGroup with caption and DataProvider.

Parameters:

caption - the caption text

dataProvider - the data provider, not null

See Also:

HasDataProvider.setDataProvider(DataProvider)

CheckBoxGroup

public CheckBoxGroup(String caption,
                     Collection<T> items)

Constructs a new CheckBoxGroup with caption and DataProvider containing given items.

Parameters:

caption - the caption text

items - the data items to use, not null

See Also:

HasItems.setItems(Collection)

CheckBoxGroup

public CheckBoxGroup()

Constructs a new CheckBoxGroup.

Method Detail

setHtmlContentAllowed

public void setHtmlContentAllowed(boolean htmlContentAllowed)

Sets whether html is allowed in the item captions. If set to true, the captions are passed to the browser as html and the developer is responsible for ensuring no harmful html is used. If set to false, the content is passed to the browser as plain text.

Parameters:

htmlContentAllowed - true if the captions are used as html, false if used as plain text

isHtmlContentAllowed

public boolean isHtmlContentAllowed()

Checks whether captions are interpreted as html or plain text.

Returns:

true if the captions are used as html, false if used as plain text

See Also:

setHtmlContentAllowed(boolean)

getState

protected CheckBoxGroupState getState()

Description copied from class: AbstractComponent

Returns the shared state bean with information to be sent from the server to the client. Subclasses should override this method and set any relevant fields of the state returned by super.getState().

Overrides:

getState in class AbstractMultiSelect<T>

Returns:

updated component shared state

getState

protected CheckBoxGroupState getState(boolean markAsDirty)

Description copied from class: AbstractClientConnector

Returns the shared state for this connector.

Overrides:

getState in class AbstractMultiSelect<T>

Parameters:

markAsDirty - true if the connector should automatically be marked dirty, false otherwise

Returns:

The shared state for this connector. Never null.

See Also:

AbstractClientConnector.getState()

getItemIconGenerator

public IconGenerator<T> getItemIconGenerator()

Description copied from class: AbstractListing

Gets the currently used item icon generator. The default item icon provider returns null for all items, resulting in no icons being used.

Implementations that support item icons make this method public.

Overrides:

getItemIconGenerator in class AbstractListing<T>

Returns:

the currently used item icon generator, not null

See Also:

IconGenerator, AbstractListing.setItemIconGenerator(IconGenerator)

setItemIconGenerator

public void setItemIconGenerator(IconGenerator<T> itemIconGenerator)

Description copied from class: AbstractListing

Sets the item icon generator that is used to produce custom icons for shown items. The generator can return null for items with no icon.

Implementations that support item icons make this method public.

Overrides:

setItemIconGenerator in class AbstractListing<T>

Parameters:

itemIconGenerator - the item icon generator to set, not null

See Also:

IconGenerator

getItemEnabledProvider

public SerializablePredicate<T> getItemEnabledProvider()

Description copied from class: AbstractMultiSelect

Returns the item enabled provider for this multiselect.

Implementation note: Override this method and AbstractMultiSelect.setItemEnabledProvider(SerializablePredicate) as public and invoke super methods to support this feature in the multiselect component.

Overrides:

getItemEnabledProvider in class AbstractMultiSelect<T>

Returns:

the item enabled provider, not null

See Also:

AbstractMultiSelect.setItemEnabledProvider(SerializablePredicate)

setItemEnabledProvider

public void setItemEnabledProvider(SerializablePredicate<T> itemEnabledProvider)

Description copied from class: AbstractMultiSelect

Sets the item enabled predicate for this multiselect. The predicate is applied to each item to determine whether the item should be enabled ( true) or disabled (false). Disabled items are displayed as grayed out and the user cannot select them. The default predicate always returns true (all the items are enabled).

Implementation note: Override this method and AbstractMultiSelect.getItemEnabledProvider() as public and invoke super methods to support this feature in the multiselect component.

Overrides:

setItemEnabledProvider in class AbstractMultiSelect<T>

Parameters:

itemEnabledProvider - the item enabled provider to set, not null

addFocusListener

public Registration addFocusListener(FieldEvents.FocusListener listener)

Description copied from interface: FieldEvents.FocusNotifier

Adds a FocusListener to the Component which gets fired when a Field receives keyboard focus.

Specified by:

addFocusListener in interface FieldEvents.FocusNotifier

Parameters:

listener - the focus listener to add, not null

Returns:

a registration object for removing the listener

See Also:

FieldEvents.FocusListener, Registration

addBlurListener

public Registration addBlurListener(FieldEvents.BlurListener listener)

Description copied from interface: FieldEvents.BlurNotifier

Adds a BlurListener to the Component which gets fired when a Field loses keyboard focus.

Specified by:

addBlurListener in interface FieldEvents.BlurNotifier

Parameters:

listener - the blur listener to add, not null

Returns:

a registration object for removing the listener

See Also:

FieldEvents.BlurListener, Registration

setItemDescriptionGenerator

public void setItemDescriptionGenerator(DescriptionGenerator<T> descriptionGenerator)

Sets the description generator that is used for generating descriptions for items. Description is shown as a tooltip when hovering on corresponding element. If the generator returns null, no tooltip is shown.

Parameters:

descriptionGenerator - the item description generator to set, not null

Since:

8.2

getItemDescriptionGenerator

public DescriptionGenerator<T> getItemDescriptionGenerator()

Gets the item description generator.

Returns:

the item description generator

Since:

8.2

readItems

protected void readItems(org.jsoup.nodes.Element design,
                         DesignContext context)

Description copied from class: AbstractListing

Reads the data source items from the design.

Overrides:

readItems in class AbstractMultiSelect<T>

Parameters:

design - The element to obtain the state from

context - The DesignContext instance used for parsing the design

readItem

protected T readItem(org.jsoup.nodes.Element child,
                     Set<T> selected,
                     DesignContext context)

Description copied from class: AbstractMultiSelect

Reads an Item from a design and inserts it into the data source. Hierarchical select components should override this method to recursively recursively read any child items as well.

Overrides:

readItem in class AbstractMultiSelect<T>

Parameters:

child - a child element representing the item

selected - A set accumulating selected items. If the item that is read is marked as selected, its item id should be added to this set.

context - the DesignContext instance used in parsing

Returns:

the item id of the new item

writeItem

protected org.jsoup.nodes.Element writeItem(org.jsoup.nodes.Element design,
                                            T item,
                                            DesignContext context)

Description copied from class: AbstractListing

Writes a data source Item to a design. Hierarchical select components should override this method to recursively write any child items as well.

Overrides:

writeItem in class AbstractMultiSelect<T>

Parameters:

design - the element into which to insert the item

item - the item to write

context - the DesignContext instance used in writing

Returns:

a JSOUP element representing the item

getDataProvider

public DataProvider<T,?> getDataProvider()

Description copied from interface: HasItems

Returns the source of data items used by this listing.

Specified by:

getDataProvider in interface HasItems<T>

Returns:

the data provider, not null

setDataProvider

public void setDataProvider(DataProvider<T,?> dataProvider)

Description copied from interface: HasDataProvider

Sets the data provider for this listing. The data provider is queried for displayed items as needed.

Specified by:

setDataProvider in interface HasDataProvider<T>

Parameters:

dataProvider - the data provider, not null