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Ajax4jsf is an open source extension to the JavaServer Faces standard that adds AJAX capability to JSF applications without requiring the writing of any JavaScript.
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/**
 * Licensed under the Common Development and Distribution License,
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * 
 *   http://www.sun.com/cddl/
 *   
 * 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.ajax4jsf.framework.ajax.xmlfilter;

import java.io.IOException;
import java.io.PrintWriter;
import java.io.Writer;

import javax.faces.component.UIComponent;
import javax.faces.context.ResponseWriter;

/**
 * @author shura
 * 
 * Hacked Adapter for HttpServletResponse - handle SAX like events, do
 * unbuffered translation to CocoonResponseWriter
 *  
 */
public class ResponsePrintWriter extends PrintWriter {

    private SAXResponseWriter responseWriter;

    /**
     * @param out
     */
    public ResponsePrintWriter(SAXResponseWriter out) {
        super(out, true);
        this.responseWriter = out;
        // TODO Auto-generated constructor stub
    }

    /**
     * @param writer
     * @return
     */
    public ResponseWriter cloneWithWriter(Writer writer) {
        return this.responseWriter.cloneWithWriter(writer);
    }

    /*
     * (non-Javadoc)
     * 
     * @see java.io.PrintWriter#close()
     */
    public void close() {
        try {
            this.responseWriter.close();
        } catch (IOException e) {
            // TODO Auto-generated catch block
            // e.printStackTrace();
        }
    }

    /**
     * @throws java.io.IOException
     */
    public void endDocument() throws IOException {
        this.responseWriter.endDocument();
    }

    /**
     * @param name
     * @throws java.io.IOException
     */
    public void endElement(String name) throws IOException {
        this.responseWriter.endElement(name);
    }

    /*
     * (non-Javadoc)
     * 
     * @see java.io.PrintWriter#flush()
     */
    public void flush() {
        try {
            this.responseWriter.flush();
        } catch (IOException e) {
            // TODO Auto-generated catch block
            // e.printStackTrace();
        }
    }

    /**
     * @return
     */
    public String getCharacterEncoding() {
        return this.responseWriter.getCharacterEncoding();
    }

    /**
     * @return
     */
    public String getContentType() {
        return this.responseWriter.getContentType();
    }

    /**
     * @throws java.io.IOException
     */
    public void startDocument() throws IOException {
        this.responseWriter.startDocument();
    }

    /**
     * @param name
     * @param component
     * @throws java.io.IOException
     */
    public void startElement(String name, UIComponent component)
            throws IOException {
        this.responseWriter.startElement(name, component);
    }

    /*
     * (non-Javadoc)
     * 
     * @see java.io.PrintWriter#write(char[])
     */
    public void write(char[] cbuf) {
        try {
            this.responseWriter.write(cbuf);
        } catch (IOException e) {
            // TODO Auto-generated catch block
            // e.printStackTrace();
        }
    }

    /*
     * (non-Javadoc)
     * 
     * @see java.io.PrintWriter#write(char[], int, int)
     */
    public void write(char[] cbuf, int off, int len) {
        try {
            this.responseWriter.write(cbuf, off, len);
        } catch (IOException e) {
            // TODO Auto-generated catch block
            // e.printStackTrace();
        }
    }

    /*
     * (non-Javadoc)
     * 
     * @see java.io.PrintWriter#write(int)
     */
    public void write(int c) {
        try {
            this.responseWriter.write(c);
        } catch (IOException e) {
            // TODO Auto-generated catch block
            // e.printStackTrace();
        }
    }

    /*
     * (non-Javadoc)
     * 
     * @see java.io.PrintWriter#write(java.lang.String)
     */
    public void write(String str) {
        try {
            this.responseWriter.write(str);
        } catch (IOException e) {
            // e.printStackTrace();
        }
    }

    /*
     * (non-Javadoc)
     * 
     * @see java.io.PrintWriter#write(java.lang.String, int, int)
     */
    public void write(String str, int off, int len) {
        try {
            this.responseWriter.write(str, off, len);
        } catch (IOException e) {
            //e.printStackTrace();
        }
    }

    /**
     * @param name
     * @param value
     * @param property
     * @throws java.io.IOException
     */
    public void writeAttribute(String name, Object value, String property)
            throws IOException {
        this.responseWriter.writeAttribute(name, value, property);
    }

    /**
     * @param comment
     * @throws java.io.IOException
     */
    public void writeComment(Object comment) throws IOException {
        this.responseWriter.writeComment(comment);
    }

    /**
     * @param text
     * @param off
     * @param len
     * @throws java.io.IOException
     */
    public void writeText(char[] text, int off, int len) throws IOException {
        this.responseWriter.writeText(text, off, len);
    }

    /**
     * @param text
     * @param property
     * @throws java.io.IOException
     */
    public void writeText(Object text, String property) throws IOException {
        this.responseWriter.writeText(text, property);
    }

    /**
     * @param name
     * @param value
     * @param property
     * @throws java.io.IOException
     */
    public void writeURIAttribute(String name, Object value, String property)
            throws IOException {
        this.responseWriter.writeURIAttribute(name, value, property);
    }
}