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.Collections;
020import java.util.List;
021
022import org.jivesoftware.smack.util.CollectionUtil;
023
024public abstract class SingleValueFormField extends FormField {
025
026    private final Value rawValue;
027
028    protected SingleValueFormField(Builder<?, ?> builder) {
029        super(builder);
030        rawValue = builder.rawValue;
031    }
032
033    @Override
034    public final List<CharSequence> getValues() {
035        CharSequence value = getValue();
036        return CollectionUtil.emptyOrSingletonListFrom(value);
037    }
038
039    public abstract CharSequence getValue();
040
041    public final Value getRawValue() {
042        return rawValue;
043    }
044
045    @Override
046    public final List<Value> getRawValues() {
047        Value rawValue = getRawValue();
048        return CollectionUtil.emptyOrSingletonListFrom(rawValue);
049    }
050
051    @Override
052    protected void populateExtraXmlChildElements() {
053        if (rawValue == null) {
054            return;
055        }
056
057        extraXmlChildElements = Collections.singletonList(rawValue);
058    }
059
060    public abstract static class Builder<F extends SingleValueFormField, B extends Builder<F, B>>
061                    extends FormField.Builder<F, B> {
062
063        protected Builder(String fieldName, Type type) {
064            super(fieldName, type);
065        }
066
067        protected Builder(SingleValueFormField formField) {
068            super(formField);
069            rawValue = formField.getRawValue();
070        }
071
072        protected Value rawValue;
073
074        @Override
075        protected void resetInternal() {
076            rawValue = null;
077        };
078
079    }
080}