org.apache.deltaspike.jsf.impl.navigation.NavigationHandlerAwareApplication Maven / Gradle / Ivy
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* 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,
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package org.apache.deltaspike.jsf.impl.navigation;
import org.apache.deltaspike.core.spi.activation.Deactivatable;
import org.apache.deltaspike.core.util.ClassUtils;
import org.apache.deltaspike.core.util.ExceptionUtils;
import org.apache.deltaspike.jsf.impl.util.JsfUtils;
import javax.faces.application.Application;
import javax.faces.application.ApplicationWrapper;
import javax.faces.application.ConfigurableNavigationHandler;
import javax.faces.application.NavigationHandler;
import java.lang.reflect.Constructor;
public class NavigationHandlerAwareApplication extends ApplicationWrapper implements Deactivatable
{
private static volatile Boolean manualNavigationHandlerWrapperMode;
private static Class navigationHandlerWrapperClass;
private final Application wrapped;
public NavigationHandlerAwareApplication(Application wrapped)
{
this.wrapped = wrapped;
}
@Override
public NavigationHandler getNavigationHandler()
{
return wrapNavigationHandler(this.wrapped.getNavigationHandler());
}
private NavigationHandler wrapNavigationHandler(NavigationHandler handler)
{
NavigationHandler result = null;
if (manualNavigationHandlerWrapperMode == null)
{
lazyInit();
}
//jsf 2.2+
if (!manualNavigationHandlerWrapperMode)
{
result = wrapNavigationHandlerWithNewWrapper(handler);
}
if (result != null)
{
return result;
}
//jsf 2.0 and 2.1
return new DeltaSpikeNavigationHandler(handler);
}
private static synchronized void lazyInit()
{
if (manualNavigationHandlerWrapperMode != null)
{
return;
}
Class wrapperClass = ClassUtils
.tryToLoadClassForName("javax.faces.application.ConfigurableNavigationHandlerWrapper");
if (wrapperClass != null)
{
navigationHandlerWrapperClass =
ClassUtils.tryToLoadClassForName(
"org.apache.deltaspike.jsf.impl.navigation.DeltaSpikeNavigationHandlerWrapper");
if (navigationHandlerWrapperClass != null)
{
manualNavigationHandlerWrapperMode = false;
}
else
{
JsfUtils.logWrongModuleUsage(NavigationHandlerAwareApplication.class.getName());
manualNavigationHandlerWrapperMode = true;
}
}
else
{
manualNavigationHandlerWrapperMode = true;
}
}
private NavigationHandler wrapNavigationHandlerWithNewWrapper(NavigationHandler handler)
{
if (ConfigurableNavigationHandler.class.isAssignableFrom(handler.getClass()))
{
try
{
Constructor deltaSpikeNavigationHandlerWrapperConstructor =
navigationHandlerWrapperClass.getConstructor(ConfigurableNavigationHandler.class);
NavigationHandler navigationHandlerWrapper =
(NavigationHandler)deltaSpikeNavigationHandlerWrapperConstructor.newInstance(handler);
return navigationHandlerWrapper;
}
catch (Exception e)
{
throw ExceptionUtils.throwAsRuntimeException(e);
}
}
return null;
}
@Override
public Application getWrapped()
{
return wrapped;
}
}
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