com.vaadin.ui.

java.lang.Object
- com.vaadin.server.AbstractClientConnector
- - com.vaadin.ui.AbstractComponent
  - - com.vaadin.ui.AbstractField<Boolean>
    - - com.vaadin.ui.CheckBox

All Implemented Interfaces:

HasValue<Boolean>, ContextClickEvent.ContextClickNotifier, FieldEvents.BlurNotifier, FieldEvents.FocusNotifier, MethodEventSource, ClientConnector, Sizeable, Connector, Component, Component.Focusable, Serializable
```
public class CheckBox
extends AbstractField<Boolean>
implements FieldEvents.BlurNotifier, FieldEvents.FocusNotifier
```
See Also:

Serialized Form

Nested Class Summary

Nested Classes
Modifier and Type	Class	Description
`static class`	`CheckBox.CheckBoxInputElement`	The inner input element of the CheckBox.
`static class`	`CheckBox.CheckBoxLabelElement`	The inner label element of the CheckBox.

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

Nested classes/interfaces inherited from interface com.vaadin.data.HasValue
HasValue.ValueChangeEvent<V>, HasValue.ValueChangeListener<V>

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

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	Description
`CheckBox()`	Creates a new checkbox.
`CheckBox(String caption)`	Creates a new checkbox with a set caption.
`CheckBox(String caption, boolean initialState)`	Creates a new checkbox with a caption and a set initial state.

Method Summary

All Methods
Modifier and Type	Method	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.
`protected void`	`doSetValue(Boolean value)`	Sets the value of this field.
`protected Collection<String>`	`getCustomAttributes()`	Returns a collection of attributes that should not be handled by the basic implementation of the `AbstractComponent.readDesign(Element, DesignContext)` and `AbstractComponent.writeDesign(Element, DesignContext)` methods.
`Boolean`	`getEmptyValue()`	Returns the value that represents an empty value.
`CheckBox.CheckBoxInputElement`	`getInputElement()`	Returns the `CheckBox.CheckBoxInputElement` element to manipulate the style name of the `input` element of the `CheckBox`.
`CheckBox.CheckBoxLabelElement`	`getLabelElement()`	Returns the `CheckBox.CheckBoxLabelElement` element to manipulate the style name of the `label` element of the `CheckBox`.
`protected CheckBoxState`	`getState()`	Returns the shared state bean with information to be sent from the server to the client.
`protected CheckBoxState`	`getState(boolean markAsDirty)`	Returns the shared state for this connector.
`Boolean`	`getValue()`	Returns the current value of this object.
`void`	`readDesign(org.jsoup.nodes.Element design, DesignContext designContext)`	Reads the component state from the given design.
`void`	`setValue(Boolean value)`	Sets the value of this CheckBox.
`protected boolean`	`setValue(Boolean value, boolean userOriginated)`	Sets the value of this CheckBox.
`void`	`writeDesign(org.jsoup.nodes.Element design, DesignContext designContext)`	Writes the component state to the given design.

Methods inherited from class com.vaadin.ui.AbstractField
addValueChangeListener, createValueChange, focus, getTabIndex, isDifferentValue, isReadOnly, isRequiredIndicatorVisible, setReadOnly, setRequiredIndicatorVisible, setTabIndex

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, setHeightFull, setHeightUndefined, setIcon, setId, setLocale, setParent, setPrimaryStyleName, setResponsive, setSizeFull, setSizeUndefined, setStyleName, setVisible, setWidth, setWidth, setWidthFull, setWidthUndefined

Methods inherited from class java.lang.Object
clone, finalize, getClass, notify, notifyAll, toString, wait, wait, wait

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

Methods inherited from interface com.vaadin.shared.Connector
getConnectorId

Methods inherited from interface com.vaadin.data.HasValue
clear, getDefaultValidator, getOptionalValue, isEmpty

Methods inherited from interface com.vaadin.server.Sizeable
getHeight, getHeightUnits, getWidth, getWidthUnits, setHeight, setHeight, setHeightFull, setHeightUndefined, setSizeFull, setSizeUndefined, setWidth, setWidth, setWidthFull, setWidthUndefined

- Constructor Detail
  - CheckBox
```
public CheckBox()
```
    Creates a new checkbox.
  - CheckBox
```
public CheckBox(String caption)
```
    Creates a new checkbox with a set caption.
    
    Parameters:
    
    caption - the Checkbox caption.
  - CheckBox
```
public CheckBox(String caption,
                boolean initialState)
```
    Creates a new checkbox with a caption and a set initial state.
    
    Parameters:
    
    caption - the caption of the checkbox
    
    initialState - the initial state of the checkbox
- Method Detail
  - getValue
```
public Boolean getValue()
```
    Description copied from interface: HasValue
    
    Returns the current value of this object.
    Implementation note: the implementing class should document whether null values may be returned or not.
    
    Specified by:
    
    getValue in interface HasValue<Boolean>
    
    Returns:
    
    the current value
  - setValue
```
public void setValue(Boolean value)
```
    Sets the value of this CheckBox. If the new value is not equal to getValue(), fires a HasValue.ValueChangeEvent. Throws NullPointerException if the value is null.
    
    Specified by:
    
    setValue in interface HasValue<Boolean>
    
    Overrides:
    
    setValue in class AbstractField<Boolean>
    
    Parameters:
    
    value - the new value, not null
    
    Throws:
    
    NullPointerException - if value is null
  - setValue
```
protected boolean setValue(Boolean value,
                           boolean userOriginated)
```
    Sets the value of this CheckBox. If the new value is not equal to getValue(), fires a HasValue.ValueChangeEvent. Throws NullPointerException if the value is null.
    
    Overrides:
    
    setValue in class AbstractField<Boolean>
    
    Parameters:
    
    value - the new value, not null
    
    userOriginated - true if this event originates from the client, false otherwise.
    
    Returns:
    
    true if the value was updated, false otherwise
    
    Throws:
    
    NullPointerException - if value is null
  - getEmptyValue
```
public Boolean getEmptyValue()
```
    Description copied from interface: HasValue
    
    Returns the value that represents an empty value.
    By default HasValue is expected to support null as empty values. Specific implementations might not support this.
    
    Specified by:
    
    getEmptyValue in interface HasValue<Boolean>
    
    Returns:
    
    empty value
    
    See Also:
    
    Binder#bind(HasValue, ValueProvider, Setter)
  - getState
```
protected CheckBoxState 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 AbstractField<Boolean>
    
    Returns:
    
    updated component shared state
  - getState
```
protected CheckBoxState getState(boolean markAsDirty)
```
    Description copied from class: AbstractClientConnector
    
    Returns the shared state for this connector.
    
    Overrides:
    
    getState in class AbstractField<Boolean>
    
    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()
  - doSetValue
```
protected void doSetValue(Boolean value)
```
    Description copied from class: AbstractField
    
    Sets the value of this field. May do sanitization or throw IllegalArgumentException if the value is invalid. Typically saves the value to shared state.
    
    Specified by:
    
    doSetValue in class AbstractField<Boolean>
    
    Parameters:
    
    value - the new value of the field
  - 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
  - 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
  - readDesign
```
public void readDesign(org.jsoup.nodes.Element design,
                       DesignContext designContext)
```
    Description copied from interface: Component
    
    Reads the component state from the given design.
    The component is responsible not only for updating its own state but also for ensuring that its children update their state based on the design.
    It is assumed that the component is in its default state when this method is called. Reading should only take into consideration attributes specified in the design and not reset any unspecified attributes to their defaults.
    This method must not modify the design.
    
    Specified by:
    
    readDesign in interface Component
    
    Overrides:
    
    readDesign in class AbstractField<Boolean>
    
    Parameters:
    
    design - The element to obtain the state from
    
    designContext - The DesignContext instance used for parsing the design
  - getCustomAttributes
```
protected Collection<String> getCustomAttributes()
```
    Description copied from class: AbstractComponent
    
    Returns a collection of attributes that should not be handled by the basic implementation of the AbstractComponent.readDesign(Element, DesignContext) and AbstractComponent.writeDesign(Element, DesignContext) methods. Typically these are handled in a custom way in the overridden versions of the above methods
    
    Overrides:
    
    getCustomAttributes in class AbstractField<Boolean>
    
    Returns:
    
    the collection of attributes that are not handled by the basic implementation
  - writeDesign
```
public void writeDesign(org.jsoup.nodes.Element design,
                        DesignContext designContext)
```
    Description copied from interface: Component
    
    Writes the component state to the given design.
    The component is responsible not only for writing its own state but also for ensuring that its children write their state to the design.
    This method must not modify the component state.
    
    Specified by:
    
    writeDesign in interface Component
    
    Overrides:
    
    writeDesign in class AbstractField<Boolean>
    
    Parameters:
    
    design - The element to write the component state to. Any previous attributes or child nodes are not cleared.
    
    designContext - The DesignContext instance used for writing the design
  - getInputElement
```
public CheckBox.CheckBoxInputElement getInputElement()
```
    Returns the CheckBox.CheckBoxInputElement element to manipulate the style name of the input element of the CheckBox.
    
    Returns:
    
    the current CheckBox.CheckBoxInputElement, not null.
    
    Since:
    
    8.7
  - getLabelElement
```
public CheckBox.CheckBoxLabelElement getLabelElement()
```
    Returns the CheckBox.CheckBoxLabelElement element to manipulate the style name of the label element of the CheckBox.
    
    Returns:
    
    the current CheckBox.CheckBoxLabelElement, not null.
    
    Since:
    
    8.7

com.vaadin.ui.

Class CheckBox

Nested Class Summary

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

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

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

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

Field Summary

Fields inherited from class com.vaadin.ui.AbstractComponent

Fields inherited from interface com.vaadin.server.Sizeable

Constructor Summary

Method Summary

Methods inherited from class com.vaadin.ui.AbstractField

Methods inherited from class com.vaadin.ui.AbstractComponent

Methods inherited from class com.vaadin.server.AbstractClientConnector

Methods inherited from class java.lang.Object

Methods inherited from interface com.vaadin.server.ClientConnector

Methods inherited from interface com.vaadin.ui.Component

Methods inherited from interface com.vaadin.shared.Connector

Methods inherited from interface com.vaadin.data.HasValue

Methods inherited from interface com.vaadin.server.Sizeable

Constructor Detail

CheckBox

CheckBox

CheckBox

Method Detail

getValue

setValue

setValue

getEmptyValue

getState

getState

doSetValue

addBlurListener

addFocusListener

readDesign

getCustomAttributes

writeDesign

getInputElement

getLabelElement