@Override
public boolean visitTree(VisitContext visitContext, VisitCallback callback) {
// First check to see whether we are visitable. If not
// short-circuit out of this subtree, though allow the
// visit to proceed through to other subtrees.
if (!isVisitable(visitContext)) {
return false;
}
// Clear out the row index is one is set so that
// we start from a clean slate.
FacesContext facesContext = visitContext.getFacesContext();
int oldRowIndex = getRowIndex();
setRowIndex(-1);
// Push ourselves to EL
pushComponentToEL(facesContext, null);
try {
// Visit ourselves. Note that we delegate to the
// VisitContext to actually perform the visit.
VisitResult result = visitContext.invokeVisitCallback(this, callback);
// If the visit is complete, short-circuit out and end the visit
if (result == VisitResult.COMPLETE) {
return true;
}
// Visit children, short-circuiting as necessary
if ((result == VisitResult.ACCEPT) && doVisitChildren(visitContext)) {
setRowIndex(-1);
if (visitFixedChildren(visitContext, callback)) {
return true;
}
if (visitDataChildren(visitContext, callback)) {
return true;
}
}
} finally {
// Clean up - pop EL and restore old row index
popComponentFromEL(facesContext);
try {
setRowIndex(oldRowIndex);
} catch (Exception e) {
LOG.error(e.getMessage(), e);
}
}
// Return false to allow the visit to continue
return false;
}
@Override
public boolean visitTree(VisitContext context, VisitCallback callback) {
if (!isVisitable(context)) {
return false;
}
FacesContext facesContext = context.getFacesContext();
pushComponentToEL(facesContext, null);
try {
VisitResult result = context.invokeVisitCallback(this, callback);
if (result == VisitResult.COMPLETE) {
return true;
}
if (result == VisitResult.ACCEPT) {
if (context instanceof ExtendedVisitContext) {
ExtendedVisitContext extendedVisitContext = (ExtendedVisitContext) context;
if (extendedVisitContext.getVisitMode() == ExtendedVisitContextMode.RENDER) {
result =
extendedVisitContext.invokeMetaComponentVisitCallback(
this, callback, ACTIVE_ITEM_META_COMPONENT);
if (result == VisitResult.COMPLETE) {
return true;
}
}
}
}
if (result == VisitResult.ACCEPT) {
Iterator<UIComponent> kids = this.getFacetsAndChildren();
while (kids.hasNext()) {
boolean done = kids.next().visitTree(context, callback);
if (done) {
return true;
}
}
}
} finally {
popComponentFromEL(facesContext);
}
return false;
}
/** @see UIComponent#visitTree */
@Override
public boolean visitTree(VisitContext context, VisitCallback callback) {
// NamingContainers can optimize partial tree visits by taking advantage
// of the fact that it is possible to detect whether any ids to visit
// exist underneath the NamingContainer. If no such ids exist, there
// is no need to visit the subtree under the NamingContainer.
// UIForm is a bit different from other NamingContainers. It only acts
// as a NamingContainer when prependId is true. Note that if it
// weren't for this, we could push this implementation up in to
// UIComponent and share it across all NamingContainers. Instead,
// we currently duplicate this implementation in UIForm and
// UINamingContainer, so that we can check isPrependId() here.
if (!this.isPrependId()) {
return super.visitTree(context, callback);
}
Collection<String> idsToVisit = context.getSubtreeIdsToVisit(this);
assert (idsToVisit != null);
// If we have ids to visit, let the superclass implementation
// handle the visit
if (!idsToVisit.isEmpty()) {
return super.visitTree(context, callback);
}
// If we have no child ids to visit, just visit ourselves, if
// we are visitable.
if (isVisitable(context)) {
FacesContext facesContext = context.getFacesContext();
pushComponentToEL(facesContext, null);
try {
VisitResult result = context.invokeVisitCallback(this, callback);
return (result == VisitResult.COMPLETE);
} finally {
popComponentFromEL(facesContext);
}
}
// Done visiting this subtree. Return false to allow
// visit to continue.
return false;
}
protected boolean visitDataChildren(VisitContext visitContext, VisitCallback callback) {
int rowIndex = 0;
for (setRowIndex(rowIndex); isRowAvailable(); setRowIndex(++rowIndex)) {
VisitResult result = visitContext.invokeVisitCallback(this, callback);
if (result == VisitResult.COMPLETE) {
return true;
}
if (result == VisitResult.REJECT) {
continue;
}
for (UIComponent child : getChildren()) {
if (child.visitTree(visitContext, callback)) {
return true;
}
}
}
return false;
}
