/**
* @param ctx FacesContext.
* @param viewId the view ID to check or null if viewId is unknown.
* @return <code>true</code> if partial state saving should be used for the specified view ID,
* otherwise <code>false</code>
*/
public boolean isPartialStateSaving(FacesContext ctx, String viewId) {
// track UIViewRoot changes
UIViewRoot root = ctx.getViewRoot();
UIViewRoot refRoot = viewRootRef.get();
if (root != refRoot) {
// set weak reference to current viewRoot
this.viewRootRef = new WeakReference<UIViewRoot>(root);
// On first call in restore phase, viewRoot is null, so we treat the first
// change to not null not as a changing viewRoot.
if (refRoot != null) {
// view root changed in request processing - force usage of a
// new AddRemoveListener instance for the new viewId ...
modListener = null;
// ... and also force check for partial state saving for the new viewId
partialLocked = false;
}
}
if (!partialLocked) {
if (viewId == null) {
if (root != null) {
viewId = root.getViewId();
} else {
// View root has not yet been initialized. Check to see whether
// the target view id has been stashed away for us.
viewId = (String) ctx.getAttributes().get(RIConstants.VIEWID_KEY_NAME);
}
}
partial = stateInfo.usePartialStateSaving(viewId);
partialLocked = true;
}
return partial;
}
/**
* @param viewId the view ID to check
* @return <code>true</code> if partial state saving should be used for the specified view ID,
* otherwise <code>false</code>
*/
public boolean partialStateSaving(String viewId) {
// track UIViewRoot changes
UIViewRoot root = ctx.getViewRoot();
UIViewRoot refRoot = viewRootRef.get();
if (root != refRoot) {
// set weak reference to current viewRoot
this.viewRootRef = new WeakReference<UIViewRoot>(root);
// On first call in restore phase, viewRoot is null, so we treat the first
// change to not null not as a changing viewRoot.
if (refRoot != null) {
// view root changed in request processing - force usage of a
// new AddRemoveListener instance for the new viewId ...
modListener = null;
// ... and also force check for partial state saving for the new viewId
partialLocked = false;
}
}
if (!partialLocked) {
partial = stateInfo.usePartialStateSaving(viewId);
partialLocked = true;
}
return partial;
}