/*
 * 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.pivot.wtk.media;

import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.net.URI;

import org.apache.pivot.serialization.Serializer;

import com.kitfox.svg.SVGCache;
import com.kitfox.svg.SVGDiagram;
import com.kitfox.svg.SVGUniverse;

/**
 * SVG diagram serializer.
 */
public class SVGDiagramSerializer implements Serializer<SVGDiagram> {
    private static int index = 0;

    public static final String MIME_TYPE = "image/svg+xml";
    public static final String SVG_EXTENSION = "svg";

    private static final String NAME_PREFIX = "svgimage_";

    @Override
    public SVGDiagram readObject(InputStream inputStream) throws IOException {
        SVGUniverse universe = SVGCache.getSVGUniverse();
        URI location = universe.loadSVG(inputStream, NAME_PREFIX + (index++));
        return universe.getDiagram(location, true);
    }

    @Override
    public void writeObject(SVGDiagram diagram, OutputStream outputStream) {
        throw new UnsupportedOperationException();
    }

    @Override
    public String getMIMEType(SVGDiagram diagram) {
        return MIME_TYPE;
    }
}
