/*
 * Copyright 2004-2011 the Seasar Foundation and the Others.
 *
 * 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.seasar.teeda.core.context;

import javax.faces.FacesException;
import javax.faces.context.FacesContext;
import javax.faces.context.FacesContextFactory;
import javax.faces.lifecycle.Lifecycle;

import org.seasar.framework.util.AssertionUtil;
import org.seasar.teeda.core.context.creator.DispatchableFacesContextCreator;
import org.seasar.teeda.core.context.creator.FacesContextCreator;
import org.seasar.teeda.core.exception.FacesContextNotFoundRuntimeException;

/**
 * @author shot
 */
public class FacesContextFactoryImpl extends FacesContextFactory {

    private FacesContextCreator contextCreator;

    public FacesContextFactoryImpl() {
        contextCreator = new DispatchableFacesContextCreator();
    }

    public FacesContext getFacesContext(Object context, Object request,
            Object response, Lifecycle lifecycle) throws FacesException {
        AssertionUtil.assertNotNull("Context", context);
        AssertionUtil.assertNotNull("Request", request);
        AssertionUtil.assertNotNull("Response", response);
        AssertionUtil.assertNotNull("Lifecycle", lifecycle);
        FacesContext facesContext = contextCreator.create(context, request,
                response, lifecycle);
        if (facesContext == null) {
            throw new FacesContextNotFoundRuntimeException();
        }
        return facesContext;
    }

}
