1 /**
2 * This file Copyright (c) 2019 Magnolia International
3 * Ltd. (http://www.magnolia-cms.com). All rights reserved.
4 *
5 *
6 * This file is dual-licensed under both the Magnolia
7 * Network Agreement and the GNU General Public License.
8 * You may elect to use one or the other of these licenses.
9 *
10 * This file is distributed in the hope that it will be
11 * useful, but AS-IS and WITHOUT ANY WARRANTY; without even the
12 * implied warranty of MERCHANTABILITY or FITNESS FOR A
13 * PARTICULAR PURPOSE, TITLE, or NONINFRINGEMENT.
14 * Redistribution, except as permitted by whichever of the GPL
15 * or MNA you select, is prohibited.
16 *
17 * 1. For the GPL license (GPL), you can redistribute and/or
18 * modify this file under the terms of the GNU General
19 * Public License, Version 3, as published by the Free Software
20 * Foundation. You should have received a copy of the GNU
21 * General Public License, Version 3 along with this program;
22 * if not, write to the Free Software Foundation, Inc., 51
23 * Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
24 *
25 * 2. For the Magnolia Network Agreement (MNA), this file
26 * and the accompanying materials are made available under the
27 * terms of the MNA which accompanies this distribution, and
28 * is available at http://www.magnolia-cms.com/mna.html
29 *
30 * Any modifications to this file must keep this entire header
31 * intact.
32 *
33 */
34 package info.magnolia.ui.datasource.optionlist;
35
36 import info.magnolia.ui.editor.MultiItemConverter;
37 import info.magnolia.ui.field.FieldDefinition;
38
39 import java.util.Collection;
40 import java.util.Objects;
41 import java.util.Optional;
42
43 import org.apache.commons.beanutils.ConvertUtilsBean;
44
45 import com.vaadin.data.Converter;
46 import com.vaadin.data.Result;
47 import com.vaadin.data.ValueContext;
48
49 /**
50 * Converter which converts {@link Option} value into {@link FieldDefinition#getType()}.
51 *
52 * In case {@link FieldDefinition#getType()} is set to {@link Collection} then no conversion is done
53 * and string {@link Option#getValue()} is returned. This is because {@link FieldDefinition#getType()} is type of
54 * the field (not type of selected element) and converter for multi-select field is by default
55 * automatically wrapped into {@link MultiItemConverter} - see {@link info.magnolia.ui.field.SelectFieldBinder#createConfiguredConverter}.
56 *
57 * @param <MODEL> model type
58 */
59 public class OptionToModelTypeConverter<MODEL> implements Converter<Option, MODEL> {
60
61 private final FieldDefinition fieldDefinition;
62 private final OptionListDefinition optionListDefinition;
63
64 public OptionToModelTypeConverter(FieldDefinition fieldDefinition, OptionListDefinition optionListDefinition) {
65 this.fieldDefinition = fieldDefinition;
66 this.optionListDefinition = optionListDefinition;
67 }
68
69 @Override
70 public Result<MODEL> convertToModel(Option option, ValueContext context) {
71 ConvertUtilsBean converter = new ConvertUtilsBean();
72 return Result.ok(Optional.ofNullable(option)
73 .map(Option::getValue)
74 .map(value -> (MODEL) (!Collection.class.isAssignableFrom(fieldDefinition.getType()) ? converter.convert(value, fieldDefinition.getType()) : value))
75 .orElse(null));
76 }
77
78 @Override
79 public Option convertToPresentation(MODEL value, ValueContext context) {
80 return optionListDefinition.getOptions().stream()
81 .filter(option -> Objects.equals(option.getValue(), String.valueOf(value)))
82 .findFirst()
83 .orElse(null);
84 }
85 }