sources/org/apache/batik/ext/awt/image/spi/ImageWriterRegistry.java

/*

   Copyright 2006  The Apache Software Foundation 

   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.apache.batik.ext.awt.image.spi;

import java.util.HashMap;
import java.util.Iterator;
import java.util.Map;

import org.apache.batik.util.Service;

public class ImageWriterRegistry {

    private static ImageWriterRegistry instance;
    
    private Map imageWriterMap = new HashMap();
    
    private ImageWriterRegistry() {
        setup();
    }
    
    public static ImageWriterRegistry getInstance() {
        if (instance == null) {
            instance = new ImageWriterRegistry();
        }
        return instance;
    }
    
    private void setup() {
        Iterator iter = Service.providers(ImageWriter.class);
        while (iter.hasNext()) {
            ImageWriter writer = (ImageWriter)iter.next();
            // System.out.println("RE: " + writer);
            register(writer);
        }
    }
    
    public void register(ImageWriter writer) {
        imageWriterMap.put(writer.getMIMEType(), writer);
    }
    
    public ImageWriter getWriterFor(String mime) {
        return (ImageWriter)imageWriterMap.get(mime);
    }
    
}