/*
* Copyright 2011 <a href="mailto:lincolnbaxter@gmail.com">Lincoln Baxter, III</a>
*
* 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.ocpsoft.rewrite.faces.annotation.handler;
import org.ocpsoft.rewrite.annotation.api.ClassContext;
import org.ocpsoft.rewrite.annotation.api.FieldContext;
import org.ocpsoft.rewrite.annotation.api.HandlerChain;
import org.ocpsoft.rewrite.annotation.api.MethodContext;
import org.ocpsoft.rewrite.annotation.handler.HandlerWeights;
import org.ocpsoft.rewrite.annotation.spi.AnnotationHandler;
import org.ocpsoft.rewrite.bind.Binding;
import org.ocpsoft.rewrite.config.Operation;
import org.ocpsoft.rewrite.faces.annotation.IgnorePostback;
import org.ocpsoft.rewrite.faces.annotation.config.IgnorePostbackBinding;
import org.ocpsoft.rewrite.faces.annotation.config.IgnorePostbackOperation;
/**
* Handler implementation of {@link IgnorePostback} annotation.
*
* @author Christian Kaltepoth
*/
public class IgnorePostbackHandler implements AnnotationHandler<IgnorePostback>
{
@Override
public Class<IgnorePostback> handles()
{
return IgnorePostback.class;
}
@Override
public int priority()
{
/*
* Must be executed after @Deferred but before all others so that the IgnorePostback wrappers
* are deferred but also wrap everything else
*/
return HandlerWeights.WEIGHT_TYPE_ENRICHING + 5;
}
@Override
public void process(ClassContext context, IgnorePostback annotation, HandlerChain chain)
{
if (context instanceof MethodContext) {
Operation operation = (Operation) context.get(Operation.class);
if (operation != null) {
// replace the operation with a wrapped one that ignores postbacks
context.put(Operation.class, new IgnorePostbackOperation(operation));
}
}
if (context instanceof FieldContext) {
Binding binding = (Binding) context.get(Binding.class);
if (binding != null) {
// replace the binding with a wrapped one that ignores postbacks
context.put(Binding.class, new IgnorePostbackBinding(binding));
}
}
// first let subsequent handlers wrap or enrich the binding/operation
chain.proceed();
}
}