- java.lang.Object
-
- javax.faces.component.UIComponent
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- javax.faces.component.UIComponentBase
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- javax.faces.component.UIOutput
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- javax.faces.component.UIInput
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- javax.faces.component.UISelectOne
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- All Implemented Interfaces:
- EventListener, EditableValueHolder, PartialStateHolder, StateHolder, TransientStateHolder, ValueHolder, ComponentSystemEventListener, FacesListener, SystemEventListenerHolder
- Direct Known Subclasses:
- HtmlSelectOneListbox, HtmlSelectOneMenu, HtmlSelectOneRadio
public class UISelectOne extends UIInput
UISelectOne is a
UIComponent
that represents the user's choice of zero or one items from among a discrete set of available options. The user can modify the selected value. Optionally, the component can be preconfigured with a currently selected item, by storing it as thevalue
property of the component.This component is generally rendered as a select box or a group of radio buttons.
By default, the
rendererType
property is set to "javax.faces.Menu
". This value can be changed by calling thesetRendererType()
method.
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Field Summary
Fields Modifier and Type Field and Description static String
COMPONENT_FAMILY
The standard component family for this component.static String
COMPONENT_TYPE
The standard component type for this component.static String
INVALID_MESSAGE_ID
The message identifier of theFacesMessage
to be created if a value not matching the available options is specified.-
Fields inherited from class javax.faces.component.UIInput
CONVERSION_MESSAGE_ID, REQUIRED_MESSAGE_ID, UPDATE_MESSAGE_ID, VALIDATE_EMPTY_FIELDS_PARAM_NAME
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Fields inherited from class javax.faces.component.UIComponent
ATTRS_WITH_DECLARED_DEFAULT_VALUES, BEANINFO_KEY, bindings, COMPOSITE_COMPONENT_TYPE_KEY, COMPOSITE_FACET_NAME, CURRENT_COMPONENT, CURRENT_COMPOSITE_COMPONENT, FACETS_KEY, HONOR_CURRENT_COMPONENT_ATTRIBUTES_PARAM_NAME, VIEW_LOCATION_KEY
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Constructor Summary
Constructors Constructor and Description UISelectOne()
Create a newUISelectOne
instance with default property values.
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method and Description String
getFamily()
Return the identifier of the component family to which this component belongs.protected void
validateValue(FacesContext context, Object value)
In addition to the standard validation behavior inherited fromUIInput
, ensure that any specified value is equal to one of the available options.-
Methods inherited from class javax.faces.component.UIInput
addValidator, addValueChangeListener, clearInitialState, compareValues, decode, getConvertedValue, getConverterMessage, getRequiredMessage, getSubmittedValue, getValidator, getValidatorMessage, getValidators, getValue, getValueChangeListener, getValueChangeListeners, isEmpty, isImmediate, isLocalValueSet, isRequired, isValid, markInitialState, processDecodes, processUpdates, processValidators, removeValidator, removeValueChangeListener, resetValue, restoreState, saveState, setConverterMessage, setImmediate, setLocalValueSet, setRequired, setRequiredMessage, setSubmittedValue, setValid, setValidator, setValidatorMessage, setValue, setValueChangeListener, updateModel, validate
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Methods inherited from class javax.faces.component.UIOutput
getConverter, getLocalValue, setConverter
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Methods inherited from class javax.faces.component.UIComponentBase
addClientBehavior, addFacesListener, broadcast, encodeBegin, encodeChildren, encodeEnd, findComponent, getAttributes, getChildCount, getChildren, getClientBehaviors, getClientId, getDefaultEventName, getEventNames, getFacesContext, getFacesListeners, getFacet, getFacetCount, getFacets, getFacetsAndChildren, getId, getListenersForEventClass, getParent, getPassThroughAttributes, getRenderer, getRendererType, getRendersChildren, getValueBinding, invokeOnComponent, isRendered, isTransient, processRestoreState, processSaveState, queueEvent, removeFacesListener, restoreAttachedState, saveAttachedState, setId, setParent, setRendered, setRendererType, setTransient, setValueBinding, subscribeToEvent, unsubscribeFromEvent
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Methods inherited from class javax.faces.component.UIComponent
encodeAll, getClientId, getCompositeComponentParent, getContainerClientId, getCurrentComponent, getCurrentCompositeComponent, getNamingContainer, getPassThroughAttributes, getResourceBundleMap, getStateHelper, getStateHelper, getTransientStateHelper, getTransientStateHelper, getValueExpression, initialStateMarked, isCompositeComponent, isInView, isVisitable, popComponentFromEL, processEvent, pushComponentToEL, restoreTransientState, saveTransientState, setInView, setValueExpression, visitTree
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Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
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Methods inherited from interface javax.faces.component.ValueHolder
getConverter, getLocalValue, setConverter
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Field Detail
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COMPONENT_TYPE
public static final String COMPONENT_TYPE
The standard component type for this component.
- See Also:
- Constant Field Values
-
COMPONENT_FAMILY
public static final String COMPONENT_FAMILY
The standard component family for this component.
- See Also:
- Constant Field Values
-
INVALID_MESSAGE_ID
public static final String INVALID_MESSAGE_ID
The message identifier of the
FacesMessage
to be created if a value not matching the available options is specified.- See Also:
- Constant Field Values
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Constructor Detail
-
UISelectOne
public UISelectOne()
Create a new
UISelectOne
instance with default property values.
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Method Detail
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getFamily
public String getFamily()
Description copied from class:UIComponent
Return the identifier of the component family to which this component belongs. This identifier, in conjunction with the value of the
rendererType
property, may be used to select the appropriateRenderer
for this component instance.
-
validateValue
protected void validateValue(FacesContext context, Object value)
In addition to the standard validation behavior inherited from
UIInput
, ensure that any specified value is equal to one of the available options. Before comparing each option, coerce the option value type to the type of this component's value following the Expression Language coercion rules. If the specified value is not equal to any of the options, enqueue an error message and set thevalid
property tofalse
.If
UIInput.isRequired()
returnstrue
, and the current value is equal to the value of an innerUISelectItem
whoseUISelectItem.isNoSelectionOption()
method returnstrue
, enqueue an error message and set thevalid
property tofalse
.- Overrides:
validateValue
in classUIInput
- Parameters:
context
- TheFacesContext
for the current requestvalue
- The converted value to test for membership.- Throws:
NullPointerException
- ifcontext
isnull
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Bij voorbaat dank.
Document heeft de 11/06/2005 gemaakt, de laatste keer de 18/08/2025 gewijzigd
Bron van het afgedrukte document:https://www.gaudry.be/nl/java-api-javaee-rf-javax/faces/component/UISelectOne.html
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