/*
* JBoss, Home of Professional Open Source
* Copyright 2013, Red Hat, Inc. and individual contributors
* by the @authors tag. See the copyright.txt in the distribution for a
* full listing of individual contributors.
*
* This is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation; either version 2.1 of
* the License, or (at your option) any later version.
*
* This software is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this software; if not, write to the Free
* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA, or see the FSF site: http://www.fsf.org.
*/
package org.richfaces.context;
import java.util.Collection;
import javax.faces.component.UIComponent;
import javax.faces.component.UIData;
import javax.faces.component.visit.VisitCallback;
import javax.faces.component.visit.VisitContext;
import javax.faces.component.visit.VisitResult;
import javax.faces.context.FacesContext;
import org.richfaces.log.Logger;
import org.richfaces.log.RichfacesLogger;
/**
* @author Nick Belaevski
*
*/
public class AjaxTableComponentImpl extends UIData {
private static final Logger LOG = RichfacesLogger.COMPONENTS.getLogger();
private boolean visitMetaComponent(String name, ExtendedVisitContext visitContext, VisitCallback callback) {
UIComponent facet = getFacet(name);
if (facet != null) {
VisitResult result = visitContext.invokeMetaComponentVisitCallback(this, callback, name);
if (result == VisitResult.ACCEPT) {
if (facet.visitTree(visitContext, callback)) {
result = VisitResult.COMPLETE;
}
}
return result == VisitResult.COMPLETE;
} else {
return false;
}
}
private boolean doVisitChildren(VisitContext context) {
// TODO optimize for returned IDs
Collection<String> idsToVisit = context.getSubtreeIdsToVisit(this);
assert idsToVisit != null;
// All ids or non-empty collection means we need to visit our children.
return !idsToVisit.isEmpty();
}
@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;
}
protected boolean visitFixedChildren(VisitContext visitContext, VisitCallback callback) {
if (visitContext instanceof ExtendedVisitContext) {
ExtendedVisitContext extendedVisitContext = (ExtendedVisitContext) visitContext;
if (visitMetaComponent("header", extendedVisitContext, callback)) {
return true;
}
if (visitMetaComponent("footer", extendedVisitContext, callback)) {
return true;
}
return false;
} else {
for (UIComponent facet : getFacets().values()) {
if (facet.visitTree(visitContext, callback)) {
return true;
}
}
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;
}
}