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Parses XML to PDF, with CSS support, using iText
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/*
 *
 * This file is part of the iText (R) project.
    Copyright (c) 1998-2022 iText Group NV
 * Authors: Balder Van Camp, Emiel Ackermann, et al.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License version 3
 * as published by the Free Software Foundation with the addition of the
 * following permission added to Section 15 as permitted in Section 7(a):
 * FOR ANY PART OF THE COVERED WORK IN WHICH THE COPYRIGHT IS OWNED BY
 * ITEXT GROUP. ITEXT GROUP DISCLAIMS THE WARRANTY OF NON INFRINGEMENT
 * OF THIRD PARTY RIGHTS
 *
 * This program is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
 * or FITNESS FOR A PARTICULAR PURPOSE.
 * See the GNU Affero General Public License for more details.
 * You should have received a copy of the GNU Affero General Public License
 * along with this program; if not, see http://www.gnu.org/licenses or write to
 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
 * Boston, MA, 02110-1301 USA, or download the license from the following URL:
 * http://itextpdf.com/terms-of-use/
 *
 * The interactive user interfaces in modified source and object code versions
 * of this program must display Appropriate Legal Notices, as required under
 * Section 5 of the GNU Affero General Public License.
 *
 * In accordance with Section 7(b) of the GNU Affero General Public License,
 * a covered work must retain the producer line in every PDF that is created
 * or manipulated using iText.
 *
 * You can be released from the requirements of the license by purchasing
 * a commercial license. Buying such a license is mandatory as soon as you
 * develop commercial activities involving the iText software without
 * disclosing the source code of your own applications.
 * These activities include: offering paid services to customers as an ASP,
 * serving PDFs on the fly in a web application, shipping iText with a closed
 * source product.
 *
 * For more information, please contact iText Software Corp. at this
 * address: [email protected]
 */
package com.itextpdf.tool.xml.pipeline.html;

import java.util.Map;
import java.util.concurrent.ConcurrentHashMap;

import com.itextpdf.text.Image;

/**
 * @author itextpdf.com
 *
 */
public abstract class AbstractImageProvider implements ImageProvider {

	private final Map map;

	/**
	 *
	 */
	public AbstractImageProvider() {
		this.map = new ConcurrentHashMap();
	}
	/* (non-Javadoc)
	 * @see com.itextpdf.tool.xml.pipeline.html.ImageProvider#retrieve(java.lang.String)
	 */
	public Image retrieve(final String src) {
		return map.get(src);
	}


	/* (non-Javadoc)
	 * @see com.itextpdf.tool.xml.pipeline.html.ImageProvider#store(java.lang.String, com.itextpdf.text.Image)
	 */
	public void store(final String src, final Image img) {
		map.put(src, img);
	}

	/* (non-Javadoc)
	 * @see com.itextpdf.tool.xml.pipeline.html.ImageProvider#reset()
	 */
	public void reset() {
		this.map.clear();
	}

}