- java.lang.Object
-
- javax.faces.component.UIComponent
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- javax.faces.component.UIComponentBase
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- javax.faces.component.UIForm
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- All Implemented Interfaces:
- EventListener, NamingContainer, PartialStateHolder, StateHolder, TransientStateHolder, UniqueIdVendor, ComponentSystemEventListener, FacesListener, SystemEventListenerHolder
- Direct Known Subclasses:
- HtmlForm
public class UIForm extends UIComponentBase implements NamingContainer, UniqueIdVendor
UIForm is a
UIComponent
that represents an input form to be presented to the user, and whose child components represent (among other things) the input fields to be included when the form is submitted.By default, the
rendererType
property must be set to "javax.faces.Form
". 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.-
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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Fields inherited from interface javax.faces.component.NamingContainer
SEPARATOR_CHAR
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Constructor Summary
Constructors Constructor and Description UIForm()
Create a newUIForm
instance with default property values.
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method and Description String
createUniqueId(FacesContext context, String seed)
Generate an identifier for a component.
String
getContainerClientId(FacesContext context)
Override theUIComponent.getContainerClientId(javax.faces.context.FacesContext)
to allow users to disable this form from prepending itsclientId
to its descendent'sclientIds
depending on the value of this form'sisPrependId()
property.String
getFamily()
Return the identifier of the component family to which this component belongs.boolean
isPrependId()
The prependId flag.boolean
isSubmitted()
Returns the current value of thesubmitted
property.void
processDecodes(FacesContext context)
OverrideUIComponent.processDecodes(javax.faces.context.FacesContext)
to ensure that the form is decoded before its children.void
processUpdates(FacesContext context)
OverrideUIComponent.processUpdates(javax.faces.context.FacesContext)
to ensure that the children of thisUIForm
instance are only processed ifisSubmitted()
returnstrue
.void
processValidators(FacesContext context)
OverrideUIComponent.processValidators(javax.faces.context.FacesContext)
to ensure that the children of thisUIForm
instance are only processed ifisSubmitted()
returnstrue
.void
setPrependId(boolean prependId)
void
setSubmitted(boolean submitted)
If thisUIForm
instance (as opposed to other forms in the page) is experiencing a submit during this request processing lifecycle, this method must be called, withtrue
as the argument, during theUIComponent.decode(javax.faces.context.FacesContext)
for thisUIForm
instance.boolean
visitTree(VisitContext context, VisitCallback callback)
Perform a tree visit starting at this node in the tree.
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Methods inherited from class javax.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, processRestoreState, processSaveState, queueEvent, removeFacesListener, restoreAttachedState, restoreState, saveAttachedState, saveState, setId, setParent, setRendered, setRendererType, setTransient, setValueBinding, subscribeToEvent, unsubscribeFromEvent
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Methods inherited from class javax.faces.component.UIComponent
encodeAll, getClientId, getCompositeComponentParent, getCurrentComponent, getCurrentCompositeComponent, getNamingContainer, getPassThroughAttributes, getResourceBundleMap, getStateHelper, getStateHelper, getTransientStateHelper, getTransientStateHelper, getValueExpression, initialStateMarked, isCompositeComponent, isInView, isVisitable, popComponentFromEL, processEvent, pushComponentToEL, restoreTransientState, saveTransientState, setInView, setValueExpression
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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
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COMPONENT_FAMILY
public static final String COMPONENT_FAMILY
The standard component family for this component.
- See Also:
- Constant Field Values
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Constructor Detail
-
UIForm
public UIForm()
Create a new
UIForm
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.- Specified by:
getFamily
in classUIComponent
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isSubmitted
public boolean isSubmitted()
Returns the current value of the
submitted
property. The default value isfalse
. SeesetSubmitted(boolean)
for details.This property must be kept as a transient property using the
UIComponent.getTransientStateHelper()
.
-
setSubmitted
public void setSubmitted(boolean submitted)
If this
UIForm
instance (as opposed to other forms in the page) is experiencing a submit during this request processing lifecycle, this method must be called, withtrue
as the argument, during theUIComponent.decode(javax.faces.context.FacesContext)
for thisUIForm
instance. If thisUIForm
instance is not experiencing a submit, this method must be called, withfalse
as the argument, during theUIComponent.decode(javax.faces.context.FacesContext)
for thisUIForm
instance.The value of a
UIForm
's submitted property must not be saved as part of its state.This property must be kept as a transient property using the
UIComponent.getTransientStateHelper()
.
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isPrependId
public boolean isPrependId()
The prependId flag.
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setPrependId
public void setPrependId(boolean prependId)
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processDecodes
public void processDecodes(FacesContext context)
Override
UIComponent.processDecodes(javax.faces.context.FacesContext)
to ensure that the form is decoded before its children. This is necessary to allow thesubmitted
property to be correctly set.- Overrides:
processDecodes
in classUIComponentBase
- Parameters:
context
-FacesContext
for the request we are processing- Throws:
NullPointerException
- ifcontext
isnull
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processValidators
public void processValidators(FacesContext context)
Override
UIComponent.processValidators(javax.faces.context.FacesContext)
to ensure that the children of thisUIForm
instance are only processed ifisSubmitted()
returnstrue
.- Overrides:
processValidators
in classUIComponentBase
- Parameters:
context
-FacesContext
for the request we are processing- Throws:
NullPointerException
- ifcontext
isnull
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processUpdates
public void processUpdates(FacesContext context)
Override
UIComponent.processUpdates(javax.faces.context.FacesContext)
to ensure that the children of thisUIForm
instance are only processed ifisSubmitted()
returnstrue
.- Overrides:
processUpdates
in classUIComponentBase
- Parameters:
context
-FacesContext
for the request we are processing- Throws:
NullPointerException
- ifcontext
isnull
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createUniqueId
public String createUniqueId(FacesContext context, String seed)
Generate an identifier for a component. The identifier will be prefixed with UNIQUE_ID_PREFIX, and will be unique within this component-container. Optionally, a unique seed value can be supplied by component creators which should be included in the generated unique id.
If the
prependId
property has the valuefalse
, this method must callcreateUniqueId
on the next ancestorUniqueIdVendor
.- Specified by:
createUniqueId
in interfaceUniqueIdVendor
- Parameters:
context
- FacesContextseed
- an optional seed value - e.g. based on the position of the component in the VDL-template- Returns:
- a unique-id in this component-container
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getContainerClientId
public String getContainerClientId(FacesContext context)
Override the
UIComponent.getContainerClientId(javax.faces.context.FacesContext)
to allow users to disable this form from prepending itsclientId
to its descendent'sclientIds
depending on the value of this form'sisPrependId()
property.- Overrides:
getContainerClientId
in classUIComponent
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visitTree
public boolean visitTree(VisitContext context, VisitCallback callback)
Description copied from class:UIComponent
Perform a tree visit starting at this node in the tree.
UIComponent.visitTree() implementations do not invoke the
VisitCallback
directly, but instead callVisitContext.invokeVisitCallback(javax.faces.component.UIComponent, javax.faces.component.visit.VisitCallback)
to invoke the callback. This allowsVisitContext
implementations to provide optimized tree traversals, for example by only calling theVisitCallback
for a subset of components.UIComponent.visitTree() implementations must call UIComponent.pushComponentToEL() before performing the visit and UIComponent.popComponentFromEL() after the visit.
- Overrides:
visitTree
in classUIComponent
- Parameters:
context
- theVisitContext
for this visitcallback
- theVisitCallback
instance whosevisit
method will be called for each node visited.- Returns:
- component implementations may return
true
to indicate that the tree visit is complete (eg. all components that need to be visited have been visited). This results in the tree visit being short-circuited such that no more components are visited.
- See Also:
UIComponent.visitTree(javax.faces.component.visit.VisitContext, javax.faces.component.visit.VisitCallback)
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Document créé le 24/12/2007, dernière modification le 18/08/2025
Source du document imprimé : https://www.gaudry.be/java-api-javaee-rf-javax/faces/component/UIForm.html
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