/*

   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.batik.transcoder;

import java.io.InputStream;
import java.io.Reader;

import org.w3c.dom.Document;
import org.xml.sax.XMLReader;

/**
 * This class represents a generic input of a <tt>Transcoder</tt>.
 *
 * @author <a href="mailto:Thierry.Kormann@sophia.inria.fr">Thierry Kormann</a>
 * @version $Id$
 */
public class TranscoderInput {

    /**
     * The optional XML reader to receive SAX events.
     */
    protected XMLReader xmlReader;

    /**
     * The optional input has a byte stream.
     */
    protected InputStream istream;

    /**
     * The optional input as a character stream.
     */
    protected Reader reader;

    /**
     * The optional input as XML Document.
     */
    protected Document document;

    /**
     * The optional input as a URI.
     */
    protected String uri;

    /**
     * Constructs a new empty <tt>TranscoderInput</tt>.
     */
    public TranscoderInput() {
    }

    /**
     * Constructs a new <tt>TranscoderInput</tt> with the specified
     * XML reader.
     * @param xmlReader the XML reader of this transcoder input
     */
    public TranscoderInput(XMLReader xmlReader) {
        this.xmlReader = xmlReader;
    }

    /**
     * Constructs a new <tt>TranscoderInput</tt> with the specified
     * byte stream input.
     * @param istream the byte stream of this transcoder input
     */
    public TranscoderInput(InputStream istream) {
        this.istream = istream;
    }

    /**
     * Constructs a new <tt>TranscoderInput</tt> with the specified
     * character stream.
     * @param reader the character stream of this transcoder input
     */
    public TranscoderInput(Reader reader) {
        this.reader = reader;
    }

    /**
     * Constructs a new <tt>TranscoderInput</tt> with the specified Document.
     * @param document the Document of this transcoder input
     */
    public TranscoderInput(Document document) {
        this.document = document;
    }

    /**
     * Constructs a new <tt>TranscoderInput</tt> with the specified uri.
     * @param uri the URI of this transcoder input
     */
    public TranscoderInput(String uri) {
        this.uri = uri;
    }

    /**
     * Sets the input of this transcoder input with the specified
     * XML reader.
     * @param xmlReader the XML reader of this transcoder input
     */
    public void setXMLReader(XMLReader xmlReader) {
        this.xmlReader = xmlReader;
    }

    /**
     * Returns the XML reader of this transcoder or null if none was
     * supplied.
     */
    public XMLReader getXMLReader() {
        return xmlReader;
    }

    /**
     * Sets the input of this transcoder input with the specified
     * byte stream.
     * @param istream the byte stream of this transcoder input
     */
    public void setInputStream(InputStream istream) {
        this.istream = istream;
    }

    /**
     * Returns the input of this transcoder as a byte stream or null
     * if none was supplied.
     */
    public InputStream getInputStream() {
        return istream;
    }

    /**
     * Sets the input of this transcoder input with the specified
     * character stream.
     * @param reader the character stream of this transcoder input
     */
    public void setReader(Reader reader) {
        this.reader = reader;
    }

    /**
     * Returns the input of this transcoder as a character stream or null
     * if none was supplied.
     */
    public Reader getReader() {
        return reader;
    }

    /**
     * Sets the input of this transcoder input with the specified
     * document.
     * @param document the document of this transcoder input
     */
    public void setDocument(Document document) {
        this.document = document;
    }

    /**
     * Returns the input of this transcoder as a document or null if
     * none was supplied.
     */
    public Document getDocument() {
        return document;
    }

    /**
     * Sets the input of this transcoder input with the specified URI.
     * @param uri the URI of this transcoder input
     */
    public void setURI(String uri) {
        this.uri = uri;
    }

    /**
     * Returns the input of this transcoder as a URI or null if none
     * was supplied.
     */
    public String getURI() {
        return uri;
    }
}