001    package biweekly.property.marshaller;
002    
003    import java.util.Date;
004    import java.util.List;
005    
006    import biweekly.io.CannotParseException;
007    import biweekly.io.xml.XCalElement;
008    import biweekly.parameter.ICalParameters;
009    import biweekly.parameter.Value;
010    import biweekly.property.Trigger;
011    import biweekly.util.Duration;
012    
013    /*
014     Copyright (c) 2013, Michael Angstadt
015     All rights reserved.
016    
017     Redistribution and use in source and binary forms, with or without
018     modification, are permitted provided that the following conditions are met: 
019    
020     1. Redistributions of source code must retain the above copyright notice, this
021     list of conditions and the following disclaimer. 
022     2. Redistributions in binary form must reproduce the above copyright notice,
023     this list of conditions and the following disclaimer in the documentation
024     and/or other materials provided with the distribution. 
025    
026     THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
027     ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
028     WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
029     DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
030     ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
031     (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
032     LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
033     ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
034     (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
035     SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
036     */
037    
038    /**
039     * Marshals {@link Trigger} properties.
040     * @author Michael Angstadt
041     */
042    public class TriggerMarshaller extends ICalPropertyMarshaller<Trigger> {
043            public TriggerMarshaller() {
044                    super(Trigger.class, "TRIGGER");
045            }
046    
047            @Override
048            protected void _prepareParameters(Trigger property, ICalParameters copy) {
049                    Value value = (property.getDate() == null) ? null : Value.DATE_TIME;
050                    copy.setValue(value);
051            }
052    
053            @Override
054            protected String _writeText(Trigger property) {
055                    if (property.getDate() != null) {
056                            return date(property.getDate()).write();
057                    }
058                    if (property.getDuration() != null) {
059                            return property.getDuration().toString();
060                    }
061                    return "";
062            }
063    
064            @Override
065            protected Trigger _parseText(String value, ICalParameters parameters, List<String> warnings) {
066                    value = unescape(value);
067    
068                    try {
069                            Date date = date(value).tzid(parameters.getTimezoneId(), warnings).parse();
070                            return new Trigger(date);
071                    } catch (IllegalArgumentException e) {
072                            //unable to parse value as date, must be a duration
073                    }
074    
075                    try {
076                            return new Trigger(Duration.parse(value), parameters.getRelated());
077                    } catch (IllegalArgumentException e) {
078                            //unable to parse duration
079                    }
080    
081                    throw new CannotParseException("Could not parse value as a date or duration.");
082            }
083    
084            @Override
085            protected void _writeXml(Trigger property, XCalElement element) {
086                    if (property.getDate() != null) {
087                            element.append(Value.DATE_TIME, date(property.getDate()).extended(true).write());
088                    } else if (property.getDuration() != null) {
089                            element.append(Value.DURATION, property.getDuration().toString());
090                    }
091            }
092    
093            @Override
094            protected Trigger _parseXml(XCalElement element, ICalParameters parameters, List<String> warnings) {
095                    String value = element.first(Value.DATE_TIME);
096                    if (value != null) {
097                            try {
098                                    Date date = date(value).tzid(parameters.getTimezoneId(), warnings).parse();
099                                    return new Trigger(date);
100                            } catch (IllegalArgumentException e) {
101                                    throw new CannotParseException("Could not parse date: " + value);
102                            }
103                    }
104    
105                    value = element.first(Value.DURATION);
106                    try {
107                            return new Trigger(Duration.parse(value), parameters.getRelated());
108                    } catch (IllegalArgumentException e) {
109                            throw new CannotParseException("Could not parse duration: " + value);
110                    }
111            }
112    }