org.apache.myfaces.shared_tomahawk.view.SwitchableOutputStream Maven / Gradle / Ivy

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JSF components and utilities that can be used with any JSF implementation. This library is based on the JSF1.1 version of Tomahawk, but with minor source code and build changes to take advantage of JSF2.1 features. A JSF2.1 implementation is required to use this version of the Tomahawk library.

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/*
 * 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.shared_tomahawk.view;

import java.io.IOException;
import java.io.OutputStream;

import javax.servlet.ServletOutputStream;

/**
 * Delegates the standard OutputStream-methods (close, flush, write)
 * to the given ServletOutputStream, if the ResponseSwitch is enabled
 *  
 * @author Werner Punz (latest modification by $Author: lu4242 $)
 * @author Jakob Korherr 
 * @version $Revision: 1151676 $ $Date: 2011-07-27 19:01:24 -0500 (Wed, 27 Jul 2011) $
 */
class SwitchableOutputStream extends ServletOutputStream
{

    OutputStream _delegate = null;
    ResponseSwitch _responseSwitch = null;

    public SwitchableOutputStream(ServletOutputStream delegate, ResponseSwitch responseSwitch)
    {
        _delegate = delegate;
        _responseSwitch = responseSwitch;
    }

    @Override
    public void close() throws IOException
    {
        if (_responseSwitch.isEnabled())
        {
            _delegate.close();
        }
    }

    @Override
    public void flush() throws IOException
    {
        if (_responseSwitch.isEnabled())
        {
            _delegate.flush();
        }
    }

    @Override
    public void write(byte[] b, int off, int len) throws IOException
    {
        if (_responseSwitch.isEnabled())
        {
            _delegate.write(b, off, len);
        }
    }

    @Override
    public void write(byte[] b) throws IOException
    {
        if (_responseSwitch.isEnabled())
        {
            _delegate.write(b);
        }
    }

    @Override
    public void write(int b) throws IOException
    {
        if (_responseSwitch.isEnabled())
        {
            _delegate.write(b);
        }
    }
    
}