001    package ezvcard.parameter;
002    
003    import java.util.Arrays;
004    import java.util.Collections;
005    import java.util.EnumSet;
006    import java.util.Set;
007    
008    import ezvcard.VCardVersion;
009    
010    /*
011     Copyright (c) 2013, Michael Angstadt
012     All rights reserved.
013    
014     Redistribution and use in source and binary forms, with or without
015     modification, are permitted provided that the following conditions are met: 
016    
017     1. Redistributions of source code must retain the above copyright notice, this
018     list of conditions and the following disclaimer. 
019     2. Redistributions in binary form must reproduce the above copyright notice,
020     this list of conditions and the following disclaimer in the documentation
021     and/or other materials provided with the distribution. 
022    
023     THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
024     ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
025     WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
026     DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
027     ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
028     (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
029     LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
030     ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
031     (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
032     SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
033    
034     The views and conclusions contained in the software and documentation are those
035     of the authors and should not be interpreted as representing official policies, 
036     either expressed or implied, of the FreeBSD Project.
037     */
038    
039    /**
040     * Represents a parameter whose values are supported by a variety of different
041     * vCard versions.
042     * @author Michael Angstadt
043     */
044    public class VersionedVCardParameter extends VCardParameter {
045            protected final Set<VCardVersion> supportedVersions;
046    
047            public VersionedVCardParameter(String value, VCardVersion... supportedVersions) {
048                    super(value);
049                    if (supportedVersions.length == 0) {
050                            supportedVersions = VCardVersion.values();
051                    }
052    
053                    Set<VCardVersion> set = EnumSet.copyOf(Arrays.asList(supportedVersions));
054                    this.supportedVersions = Collections.unmodifiableSet(set);
055            }
056    
057            /**
058             * Determines if the parameter value is supported by the given vCard
059             * version.
060             * @param version the vCard version
061             * @return true if it is supported, false if not
062             */
063            public boolean isSupported(VCardVersion version) {
064                    return supportedVersions.contains(version);
065            }
066    }