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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.sanselan.common;

import java.util.ArrayList;

public class ImageMetadata implements IImageMetadata
{

    private final ArrayList items = new ArrayList();

    public void add(String keyword, String text)
    {
        add(new Item(keyword, text));
    }

    public void add(IImageMetadataItem item)
    {
        items.add(item);
    }

    public ArrayList getItems()
    {
        return new ArrayList(items);
    }

    protected static final String newline = System
            .getProperty("line.separator");

    public String toString()
    {
        return toString(null);
    }

    public String toString(String prefix)
    {
        if (null == prefix)
            prefix = "";

        StringBuffer result = new StringBuffer();
        for (int i = 0; i < items.size(); i++)
        {
            if (i > 0)
                result.append(newline);
            //            if (null != prefix)
            //                result.append(prefix);

            ImageMetadata.IImageMetadataItem item = (ImageMetadata.IImageMetadataItem) items
                    .get(i);
            result.append(item.toString(prefix + "\t"));

            //            Debug.debug("prefix", prefix);
            //            Debug.debug("item", items.get(i));
            //            Debug.debug();
        }
        return result.toString();
    }

    public static class Item implements IImageMetadataItem
    {
        private final String keyword, text;

        public Item(String keyword, String text)
        {
            this.keyword = keyword;
            this.text = text;
        }

        public String getKeyword()
        {
            return keyword;
        }

        public String getText()
        {
            return text;
        }

        public String toString()
        {
            return toString(null);
        }

        public String toString(String prefix)
        {
            String result = keyword + ": " + text;
            if (null != prefix)
                result = prefix + result;
            return result;
        }
    }

}