abstractdelegatingviewbuilder.java

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/*
 * Copyright 2002-2004 the original author or authors.
 *
 * 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 de.mindmatters.faces.application;

import java.io.IOException;
import java.util.Locale;

import javax.faces.application.ViewHandler;
import javax.faces.component.UIViewRoot;
import javax.faces.context.FacesContext;

/**
 * Abstract implementation of a <strong>ViewBuilder</strong> that delegates the
 * behaviour inherited from the {@link ViewHandler} to the original view handler
 * of the underlying JSF implementation.
 * 
 * @author Andreas Kuhrwahl
 */
public abstract class AbstractDelegatingViewBuilder extends ViewBuilder {

    /** The original view handler of the underlying JSF implementation. */
    private final ViewHandler delegate;

    /**
     * Constructor that takes the original {@link ViewHandler}.
     * 
     * @param delegate
     *            the original {@link ViewHandler}
     */
    public AbstractDelegatingViewBuilder(final ViewHandler delegate) {
        super();
        this.delegate = delegate;
    }

    /**
     * {@inheritDoc}
     */
    public final Locale calculateLocale(final FacesContext context) {
        return delegate.calculateLocale(context);
    }

    /**
     * {@inheritDoc}
     */
    public final String calculateRenderKitId(final FacesContext context) {
        return delegate.calculateRenderKitId(context);
    }

    /**
     * {@inheritDoc}
     */
    public final UIViewRoot createView(final FacesContext context,
            final String viewId) {
        return delegate.createView(context, viewId);
    }

    /**
     * {@inheritDoc}
     */
    public final String getActionURL(final FacesContext context,
            final String viewId) {
        return delegate.getActionURL(context, viewId);
    }

    /**
     * {@inheritDoc}
     */
    public final String getResourceURL(final FacesContext context,
            final String path) {
        return delegate.getResourceURL(context, path);
    }

    /**
     * {@inheritDoc}
     */
    public final void renderView(final FacesContext context,
            final UIViewRoot viewToRender) throws IOException {
        delegate.renderView(context, viewToRender);
    }

    /**
     * {@inheritDoc}
     */
    public final UIViewRoot restoreView(final FacesContext context,
            final String viewId) {
        return delegate.restoreView(context, viewId);
    }

    /**
     * @return the original {@link ViewHandler}
     */
    protected final ViewHandler getDelegate() {
        return delegate;
    }

    /**
     * {@inheritDoc}
     */
    protected final void writeStateInClient(final FacesContext context)
            throws IOException {
        delegate.writeState(context);
    }

}