001/**
002 *
003 * Copyright 2020-2021 Florian Schmaus
004 *
005 * Licensed under the Apache License, Version 2.0 (the "License");
006 * you may not use this file except in compliance with the License.
007 * You may obtain a copy of the License at
008 *
009 *     http://www.apache.org/licenses/LICENSE-2.0
010 *
011 * Unless required by applicable law or agreed to in writing, software
012 * distributed under the License is distributed on an "AS IS" BASIS,
013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014 * See the License for the specific language governing permissions and
015 * limitations under the License.
016 */
017package org.jivesoftware.smackx.xdata;
018
019import java.util.ArrayList;
020import java.util.Collection;
021import java.util.Date;
022import java.util.List;
023
024import org.jivesoftware.smack.util.CollectionUtil;
025
026import org.jxmpp.util.XmppDateTime;
027
028public class AbstractMultiFormField extends FormField {
029
030    private final List<Value> values;
031
032    protected AbstractMultiFormField(Builder<?, ?> builder) {
033        super(builder);
034        values = CollectionUtil.cloneAndSeal(builder.values);
035    }
036
037    @Override
038    public final List<Value> getRawValues() {
039        return values;
040    }
041
042    public abstract static class Builder<F extends AbstractMultiFormField, B extends FormField.Builder<F, B>>
043                    extends FormField.Builder<F, B> {
044
045        private List<Value> values;
046
047        protected Builder(AbstractMultiFormField formField) {
048            super(formField);
049            values = CollectionUtil.newListWith(formField.getRawValues());
050        }
051
052        protected Builder(String fieldName, FormField.Type type) {
053            super(fieldName, type);
054        }
055
056        private void ensureValuesAreInitialized() {
057            if (values == null) {
058                values = new ArrayList<>();
059            }
060        }
061
062        @Override
063        protected void resetInternal() {
064            values = null;
065        }
066
067        public abstract B addValue(CharSequence value);
068
069        public B addValueVerbatim(CharSequence value) {
070            return addValueVerbatim(new Value(value));
071        }
072
073        public B addValueVerbatim(Value value) {
074            ensureValuesAreInitialized();
075
076            values.add(value);
077            return getThis();
078        }
079
080        public final B addValue(Date date) {
081            String dateString = XmppDateTime.formatXEP0082Date(date);
082            return addValueVerbatim(dateString);
083        }
084
085        public final B addValues(Collection<? extends CharSequence> values) {
086            ensureValuesAreInitialized();
087
088            for (CharSequence value : values) {
089                addValueVerbatim(value);
090            }
091
092            return getThis();
093        }
094    }
095}