/*
* 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.myfaces.trinidadinternal.webapp;
import java.util.Collections;
import java.util.Iterator;
import javax.el.ELContext;
import javax.el.ELResolver;
import javax.el.FunctionMapper;
import javax.el.VariableMapper;
import javax.faces.FactoryFinder;
import javax.faces.application.Application;
import javax.faces.application.ApplicationFactory;
import javax.faces.application.FacesMessage;
import javax.faces.component.UIViewRoot;
import javax.faces.context.ExternalContext;
import javax.faces.context.FacesContext;
import javax.faces.context.PartialViewContext;
import javax.faces.context.PartialViewContextFactory;
import javax.faces.context.ResponseStream;
import javax.faces.context.ResponseWriter;
import javax.faces.render.RenderKit;
/**
* Pseudo FacesContext, vended by the filter for code that
* needs to run before (or after) the FacesServlet, but needs
* access to servlet objects. This object is only available
* inside the filter.
*
*/
class PseudoFacesContext extends FacesContext
{
public PseudoFacesContext(ExternalContext ec)
{
assert ec != null : "External context must not be null";
_external = ec;
}
public void setAsCurrentInstance()
{
FacesContext.setCurrentInstance(this);
}
@Override
public void release()
{
FacesContext.setCurrentInstance(null);
}
@Override
public ResponseWriter getResponseWriter()
{
throw new UnsupportedOperationException();
}
@Override
public void setResponseWriter(ResponseWriter responseWriter)
{
throw new UnsupportedOperationException();
}
@Override
public Iterator<FacesMessage> getMessages()
{
return Collections.<FacesMessage>emptyList().iterator();
}
@Override
public Iterator<FacesMessage> getMessages(String id)
{
return Collections.<FacesMessage>emptyList().iterator();
}
@Override
public void addMessage(String id, FacesMessage message)
{
throw new UnsupportedOperationException();
}
@Override
public FacesMessage.Severity getMaximumSeverity()
{
return null;
}
@Override
public Iterator<String> getClientIdsWithMessages()
{
return Collections.<String>emptyList().iterator();
}
@Override
public UIViewRoot getViewRoot()
{
return null;
}
@Override
public void setViewRoot(UIViewRoot viewRoot)
{
throw new UnsupportedOperationException();
}
@Override
public RenderKit getRenderKit()
{
return null;
}
@Override
public boolean getRenderResponse()
{
return false;
}
@Override
public boolean getResponseComplete()
{
return false;
}
@Override
public ResponseStream getResponseStream()
{
throw new UnsupportedOperationException();
}
@Override
public void setResponseStream(ResponseStream responseStream)
{
throw new UnsupportedOperationException();
}
@Override
public void renderResponse()
{
throw new UnsupportedOperationException();
}
@Override
public void responseComplete()
{
throw new UnsupportedOperationException();
}
@Override
public Application getApplication()
{
if (_application == null)
{
_application = ((ApplicationFactory) FactoryFinder.getFactory(
FactoryFinder.APPLICATION_FACTORY)).getApplication();
}
return _application;
}
@Override
public ELContext getELContext()
{
if (_elContext == null)
{
_elContext = new MockELContext(getApplication());
}
return _elContext;
}
@Override
public ExternalContext getExternalContext()
{
return _external;
}
@Override
public PartialViewContext getPartialViewContext()
{
if (_partialViewContext == null)
{
PartialViewContextFactory f = (PartialViewContextFactory)
FactoryFinder.getFactory(FactoryFinder.PARTIAL_VIEW_CONTEXT_FACTORY);
_partialViewContext = f.getPartialViewContext(this);
}
return _partialViewContext;
}
// This is used to mock up a dummy ELContext to pass into createValueExpression
// if the FacesContext is null and we can't get FacesContext.getELContext.
private static class MockELContext extends ELContext
{
public MockELContext(Application application)
{
_resolver = application.getELResolver();
}
@Override
public ELResolver getELResolver()
{
return _resolver;
}
@Override
public FunctionMapper getFunctionMapper()
{
return null;
}
@Override
public VariableMapper getVariableMapper()
{
return null;
}
private final ELResolver _resolver;
}
private PartialViewContext _partialViewContext;
private final ExternalContext _external;
private ELContext _elContext;
private Application _application;
}