com.sun.faces.component.visit

Class PartialVisitContext

java.lang.Object

javax.faces.component.visit.VisitContext

com.sun.faces.component.visit.PartialVisitContext

public class PartialVisitContext
extends VisitContext

A VisitContext implementation that is used when performing a partial component tree visit.

RELEASE_PENDING

Since:

2.0

Field Summary

Fields inherited from class javax.faces.component.visit.VisitContext

ALL_IDS

Constructor Summary

Constructors

Constructor and Description
PartialVisitContext(FacesContext facesContext, Collection<String> clientIds) Creates a PartialVisitorContext instance.
PartialVisitContext(FacesContext facesContext, Collection<String> clientIds, Set<VisitHint> hints) Creates a PartialVisitorContext instance with the specified hints.

Method Summary

Modifier and Type	Method and Description
FacesContext	getFacesContext() Returns the FacesContext for the current request.
Set<VisitHint>	getHints() Returns hints that influence the behavior of the tree visit.
Collection<String>	getIdsToVisit() Returns the ids of the components to visit.
Collection<String>	getSubtreeIdsToVisit(UIComponent component) Given a NamingContainer component, returns the client ids of any components underneath the NamingContainer that should be visited.
Collection<String>	getUnvisitedClientIds()
VisitResult	invokeVisitCallback(UIComponent component, VisitCallback callback) Called by UIComponent.visitTree() to visit a single component.

Methods inherited from class javax.faces.component.visit.VisitContext

createVisitContext, createVisitContext

Methods inherited from class java.lang.Object

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

Constructor Detail

PartialVisitContext

public PartialVisitContext(FacesContext facesContext,
                           Collection<String> clientIds)

Creates a PartialVisitorContext instance.

Parameters:

facesContext - the FacesContext for the current request

clientIds - the client ids of the components to visit

Throws:

NullPointerException - if facesContext is null

PartialVisitContext

public PartialVisitContext(FacesContext facesContext,
                           Collection<String> clientIds,
                           Set<VisitHint> hints)

Creates a PartialVisitorContext instance with the specified hints.

Parameters:

facesContext - the FacesContext for the current request

clientIds - the client ids of the components to visit

hints - a the VisitHints for this visit

Throws:

NullPointerException - if facesContext is null

Method Detail

getFacesContext

public FacesContext getFacesContext()

Description copied from class: VisitContext

Returns the FacesContext for the current request.

Specified by:

getFacesContext in class VisitContext

Returns:

the FacesContext.

See Also:

VisitContext.getFacesContext()

getHints

public Set<VisitHint> getHints()

Description copied from class: VisitContext

Returns hints that influence the behavior of the tree visit.

Interested parties, such as UIComponent.visitTree() implementations, may check to see whether a particular hint is present by calling VisitContext.getHints().contains(), passing in one of the hints defined by VisitHint.

Specified by:

getHints in class VisitContext

Returns:

a non-empty, unmodifiable collection of VisitHints

See Also:

VisitContext.getHints

getIdsToVisit

public Collection<String> getIdsToVisit()

Description copied from class: VisitContext

Returns the ids of the components to visit.

In the case of a full tree visit, this method returns the ALL_IDS collection. Otherwise, if a partial visit is beign performed, returns a modifiable collection containing the client ids of the components that should be visited.

Specified by:

getIdsToVisit in class VisitContext

Returns:

the ids of the components to visit

See Also:

VisitContext.getIdsToVisit()

getUnvisitedClientIds

public Collection<String> getUnvisitedClientIds()

getSubtreeIdsToVisit

public Collection<String> getSubtreeIdsToVisit(UIComponent component)

Description copied from class: VisitContext

Given a NamingContainer component, returns the client ids of any components underneath the NamingContainer that should be visited.

This method is called by NamingContainer visitTree() implementations to determine whether the NamingContainer contains components to be visited. In the case where no such components exist, the NamingContainer can short-circuit the tree visit and avoid descending into child subtrees.

In addition, iterating components such as UIData may be able to use the returned ids to determine which iterated states (ie. rows) need to be visited. This allows the visit traversal to be contstrained such only those rows that contain visit targets need to be traversed.

Specified by:

getSubtreeIdsToVisit in class VisitContext

Parameters:

component - a NamingContainer component

Returns:

an unmodifiable Collection containing the client ids of any components underneath the NamingContainer that are known to be targets of the tree visit. If no such components exist, returns an empty Collection. If all components underneath the NamingContainer should be visited, returns the VisitContext.ALL_IDS collection.

See Also:

VisitContext.getSubtreeIdsToVisit()

invokeVisitCallback

public VisitResult invokeVisitCallback(UIComponent component,
                                       VisitCallback callback)

Description copied from class: VisitContext

Called by UIComponent.visitTree() to visit a single component.

Specified by:

invokeVisitCallback in class VisitContext

Parameters:

component - the component to visit

callback - the VisitCallback to call

Returns:

a VisitResult value that indicates whether to continue visiting the component's subtree, skip visiting the component's subtree or abort the visit altogether.

See Also:

VisitContext.invokeVisitCallback()