/*
* 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.text.MessageFormat;
import java.util.Collection;
import java.util.Collections;
import javax.faces.component.UIComponent;
import javax.faces.context.FacesContext;
import org.richfaces.context.IdParser.Node;
import org.richfaces.util.SeparatorChar;
import com.google.common.collect.Lists;
class ClientIdFunctionEvaluator {
private FacesContext context;
private UIComponent functionTarget;
private Node[] parsedId;
private Collection<String> resolvedIds = Lists.newArrayListWithCapacity(1);
public ClientIdFunctionEvaluator(FacesContext context, Node[] parsedId) {
super();
this.context = context;
this.parsedId = parsedId;
}
private void walk(UIComponent component, String baseId, int nodeIdx) {
boolean isLastNode = (nodeIdx == parsedId.length - 1);
Node node = parsedId[nodeIdx];
Collection<String> directSubtreeIds;
UIComponent childComponent;
if (node.getFunction() == null) {
directSubtreeIds = Collections.singleton(node.getImage());
childComponent = component;
} else {
directSubtreeIds = evaluateFunction(component, baseId, node);
// functionTarget is set inside evaluateFunction(...) call!
childComponent = functionTarget;
}
for (String directSubtreeId : directSubtreeIds) {
String clientId = SeparatorChar.JOINER.join(baseId, directSubtreeId);
if (isLastNode) {
resolvedIds.add(clientId);
} else {
walk(childComponent, clientId, nodeIdx + 1);
}
}
}
private Collection<String> evaluateFunction(UIComponent component, String baseId, Node node) {
Collection<String> directSubtreeIds;
String function = node.getFunction();
String image = node.getImage();
if (!"rows".equals(function)) {
throw new IllegalArgumentException(MessageFormat.format("Function {0} is not supported", function));
}
RowsFunctionContextCallback rowsFunctionCallback = new RowsFunctionContextCallback(image);
if (!component.invokeOnComponent(context, baseId, rowsFunctionCallback)) {
throw new IllegalStateException(MessageFormat.format("Failed to visit {0}", baseId));
}
functionTarget = rowsFunctionCallback.getComponent();
directSubtreeIds = rowsFunctionCallback.getConvertedKeys();
return directSubtreeIds;
}
public Collection<String> evaluate(UIComponent component) {
walk(component, null, 0);
return resolvedIds;
}
}