Package jakarta.faces.component

Class UIParameter

java.lang.Object

jakarta.faces.component.UIComponent

jakarta.faces.component.UIComponentBase

jakarta.faces.component.UIParameter

All Implemented Interfaces:

PartialStateHolder, StateHolder, TransientStateHolder, ComponentSystemEventListener, FacesListener, SystemEventListenerHolder, EventListener

public class UIParameter
extends UIComponentBase

UIParameter is a UIComponent that represents an optionally named configuration parameter for a parent component.

Parent components should retrieve the value of a parameter by calling getValue(). In this way, the parameter value can be set directly on the component (via setValue()), or retrieved indirectly via the value binding expression.

In some scenarios, it is necessary to provide a parameter name, in addition to the parameter value that is accessible via the getValue() method. Renderers that support parameter names on their nested UIParameter child components should document their use of this property.

Field Summary

Fields

Modifier and Type	Field	Description
static final String	COMPONENT_FAMILY	The standard component family for this component.
static final String	COMPONENT_TYPE	The standard component type for this component.

Fields inherited from class jakarta.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

Constructor Summary

Constructors

Constructor	Description
UIParameter()	Create a new UIParameter instance with default property values.

Method Summary

Modifier and Type	Method	Description
String	getFamily()	Return the identifier of the component family to which this component belongs.
String	getName()	Return the optional parameter name for this parameter.
Object	getValue()	Returns the value property of the UIParameter.
boolean	isDisable()	Return the value of the disable directive for this component.
void	setDisable(boolean disable)	Sets the disable property of the UIParameter.
void	setName(String name)	Set the optional parameter name for this parameter.
void	setValue(Object value)	Sets the value property of the\ UIParameter.

Methods inherited from class jakarta.faces.component.UIComponentBase

addClientBehavior, addFacesListener, broadcast, clearInitialState, decode, 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, markInitialState, processDecodes, processRestoreState, processSaveState, processUpdates, processValidators, queueEvent, removeFacesListener, restoreAttachedState, restoreState, saveAttachedState, saveState, setId, setParent, setRendered, setRendererType, setTransient, setValueBinding, subscribeToEvent, unsubscribeFromEvent

Methods inherited from class jakarta.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

Methods inherited from class java.lang.Object

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

Field Details

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

Constructor Details

UIParameter

public UIParameter()

Create a new UIParameter instance with default property values.

Method Details

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 appropriate Renderer for this component instance. Note this method should NOT return null

Specified by:

getFamily in class UIComponent

Returns:

the component family (not null).

getName

public String getName()

Return the optional parameter name for this parameter.

Returns:

the name.

setName

public void setName(String name)

Set the optional parameter name for this parameter.

Parameters:

name - The new parameter name, or null for no name

getValue

public Object getValue()

Returns the value property of the UIParameter.

Returns:

the value.

setValue

public void setValue(Object value)

Sets the value property of the\ UIParameter.

Parameters:

value - the new value

isDisable

public boolean isDisable()

Return the value of the disable directive for this component. This directive determines whether the parameter value should be disabled by assigning it a null value. If true, the value set on this component is ignored.

Returns:

true if disabled, false otherwise.

Since:

2.0

setDisable

public void setDisable(boolean disable)

Sets the disable property of the UIParameter.

Parameters:

disable - the value for the disable flag.

Since:

2.0