/*
* Copyright 2009-2014 PrimeTek.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.primefaces.metadata.transformer;
import org.primefaces.metadata.transformer.impl.BeanValidationInputMetadataTransformer;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
import javax.faces.FacesException;
import javax.faces.component.UIComponent;
import javax.faces.context.FacesContext;
import javax.faces.event.AbortProcessingException;
import javax.faces.event.PostAddToViewEvent;
import javax.faces.event.SystemEvent;
import javax.faces.event.SystemEventListener;
import org.primefaces.config.ConfigContainer;
import org.primefaces.context.RequestContext;
public class MetadataTransformerExecutor implements SystemEventListener {
private final static List<MetadataTransformer> METADATA_TRANSFORMERS = new ArrayList<MetadataTransformer>();
private final static MetadataTransformer BV_INPUT_METADATA_TRANSFORMER = new BeanValidationInputMetadataTransformer();
static {
}
public void processEvent(SystemEvent event) throws AbortProcessingException {
try {
if (event instanceof PostAddToViewEvent) {
PostAddToViewEvent postAddToViewEvent = (PostAddToViewEvent) event;
FacesContext context = FacesContext.getCurrentInstance();
RequestContext requestContext = RequestContext.getCurrentInstance();
ConfigContainer config = requestContext.getApplicationContext().getConfig();
if (config.isTransformMetadataEnabled() && config.isBeanValidationAvailable()) {
BV_INPUT_METADATA_TRANSFORMER.transform(context, requestContext, postAddToViewEvent.getComponent());
}
if (METADATA_TRANSFORMERS.size() > 0) {
for (int i = 0; i < METADATA_TRANSFORMERS.size(); i++) {
METADATA_TRANSFORMERS.get(i).transform(context, requestContext, postAddToViewEvent.getComponent());
}
}
}
}
catch (IOException e) {
throw new FacesException(e);
}
}
public boolean isListenerForSource(Object source) {
return source instanceof UIComponent;
}
public static void registerMetadataTransformer(final MetadataTransformer metadataTransformer) {
METADATA_TRANSFORMERS.add(metadataTransformer);
}
public static MetadataTransformer removeMetadataTransformer(final Class<? extends MetadataTransformer> clazz) {
Iterator<MetadataTransformer> iterator = METADATA_TRANSFORMERS.iterator();
while (iterator.hasNext()) {
MetadataTransformer metadataTransformer = iterator.next();
if (metadataTransformer.getClass().equals(clazz)) {
iterator.remove();
return metadataTransformer;
}
}
return null;
}
}