001    /*
002     * Jpkg - Java library and tools for operating system package creation.
003     *
004     * Copyright (c) 2007 Three Rings Design, Inc.
005     * All rights reserved.
006     *
007     * Redistribution and use in source and binary forms, with or without
008     * modification, are permitted provided that the following conditions
009     * are met:
010     * 1. Redistributions of source code must retain the above copyright
011     *    notice, this list of conditions and the following disclaimer.
012     * 2. Redistributions in binary form must reproduce the above copyright
013     *    notice, this list of conditions and the following disclaimer in the
014     *    documentation and/or other materials provided with the distribution.
015     * 3. Neither the name of the copyright owner nor the names of contributors
016     *    may be used to endorse or promote products derived from this software
017     *    without specific prior written permission.
018     *
019     * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
020     * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
021     * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
022     * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
023     * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
024     * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
025     * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
026     * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
027     * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
028     * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
029     * POSSIBILITY OF SUCH DAMAGE.
030     */
031    package com.threerings.jpkg.ant.dpkg.info.description;
032    
033    import java.util.Collections;
034    import java.util.List;
035    
036    import com.threerings.antidote.Violation;
037    import com.threerings.antidote.field.BaseField;
038    import com.threerings.jpkg.ant.dpkg.info.Description;
039    import com.threerings.jpkg.debian.PackageDescription;
040    
041    /**
042     * A {@link DescriptionAction} field that inserts a blank line into the {@link Description}.
043     * @see PackageDescription
044     */
045    public class Blank extends BaseField
046        implements DescriptionAction
047    {
048        // from Field
049        public String getFieldName ()
050        {
051            return "blank";
052        }
053    
054        // from DescriptionAction
055        public List<Violation> apply (PackageDescription description)
056        {
057            description.addBlankLine();
058            return Collections.emptyList();
059        }
060    
061        @Override // from BaseComponent
062        protected void validateField ()
063        {
064            // nothing requires validation
065        }
066    }