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Open HTML to PDF is a CSS 2.1 renderer written in Java. This artifact contains the core rendering and layout code.

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/*
 * {{{ header & license
 * Copyright (c) 2007 Wisconsin Court System
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public License
 * as published by the Free Software Foundation; either version 2.1
 * of the License, or (at your option) any later version.
 *
 * 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 Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
 * }}}
 */
package com.openhtmltopdf.css.sheet;

import java.util.ArrayList;
import java.util.List;
import java.util.Locale;

public class MediaRule implements RulesetContainer {
    private final List _mediaTypes = new ArrayList<>(1);
    private final List _contents = new ArrayList<>();
    private final int _origin;
    
    public MediaRule(int origin) {
        _origin = origin;
    }
    
    public void addMedium(String medium) {
        _mediaTypes.add(medium);
    }
    
    public boolean matches(String medium) {
        if (medium.equalsIgnoreCase("all") || _mediaTypes.contains("all")) {
            return true;
        } else {
            return _mediaTypes.contains(medium.toLowerCase(Locale.US));
        }
    }
    
    @Override
    public void addContent(Ruleset ruleset) {
        _contents.add(ruleset);
    }
    
    public List getContents() {
        return _contents;
    }
    
    @Override
    public int getOrigin() {
        return _origin;
    }
}