001package biweekly.property;
002
003import java.util.ArrayList;
004import java.util.List;
005
006import biweekly.ICalVersion;
007import biweekly.Warning;
008import biweekly.component.ICalComponent;
009
010/*
011 Copyright (c) 2013-2015, 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
035/**
036 * Represents a property whose value is a list of values.
037 * @author Michael Angstadt
038 * @param <T> the value type
039 */
040public class ListProperty<T> extends ICalProperty {
041        private final List<T> values;
042
043        /**
044         * Creates a new list property.
045         */
046        public ListProperty() {
047                values = new ArrayList<T>();
048        }
049
050        /**
051         * Creates a new list property.
052         * @param values the values to initialize the property with
053         */
054        public ListProperty(T... values) {
055                this();
056                for (T value : values) {
057                        this.values.add(value);
058                }
059        }
060
061        /**
062         * Creates a new list property.
063         * @param values the values to initialize the property with
064         */
065        public ListProperty(List<T> values) {
066                this.values = values;
067        }
068
069        /**
070         * Adds a value to this property.
071         * @param value the value to add
072         */
073        public void addValue(T value) {
074                values.add(value);
075        }
076
077        /**
078         * Gets the values of this property.
079         * @return the values
080         */
081        public List<T> getValues() {
082                return values;
083        }
084
085        @Override
086        protected void validate(List<ICalComponent> components, ICalVersion version, List<Warning> warnings) {
087                if (values.isEmpty()) {
088                        warnings.add(Warning.validate(26));
089                }
090        }
091}