/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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.apache.deltaspike.jsf.impl.scope.viewaccess;
import javax.faces.application.NavigationHandler;
import javax.faces.context.FacesContext;
import org.apache.deltaspike.core.api.provider.BeanProvider;
import org.apache.deltaspike.core.impl.scope.DeltaSpikeContextExtension;
import org.apache.deltaspike.core.impl.scope.viewaccess.ViewAccessContext;
import org.apache.deltaspike.core.spi.activation.Deactivatable;
public class ViewAccessScopedAwareNavigationHandler extends NavigationHandler implements Deactivatable
{
private final NavigationHandler navigationHandler;
private volatile Boolean initialized;
private DeltaSpikeContextExtension contextExtension;
public ViewAccessScopedAwareNavigationHandler(NavigationHandler navigationHandler)
{
this.navigationHandler = navigationHandler;
}
@Override
public void handleNavigation(FacesContext context, String fromAction, String outcome)
{
// remember viewId before navigation
String viewId = null;
if (context.getViewRoot() != null)
{
viewId = context.getViewRoot().getViewId();
}
this.navigationHandler.handleNavigation(context, fromAction, outcome);
if (viewId != null && context.isPostback() /*need for supporting view-actions correctly - see DELTASPIKE-795*/)
{
lazyInit();
ViewAccessContext viewAccessContext = contextExtension.getViewAccessScopedContext();
if (viewAccessContext != null)
{
viewAccessContext.onProcessingViewFinished(viewId);
}
}
}
private void lazyInit()
{
if (this.initialized == null)
{
init();
}
}
private synchronized void init()
{
// switch into paranoia mode
if (this.initialized == null)
{
contextExtension = BeanProvider.getContextualReference(DeltaSpikeContextExtension.class, true);
this.initialized = true;
}
}
}