1 /**
2 * This file Copyright (c) 2021 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.field;
35
36 import info.magnolia.ui.datasource.ItemResolver;
37
38 import java.util.Optional;
39
40 import javax.inject.Inject;
41
42 import com.vaadin.ui.TextField;
43
44
45 /**
46 * A custom field displaying a text field and a button for bringing up a component enabling to choose an item.
47 */
48 public class TextLinkField<T> extends AbstractLinkField<String, T> {
49
50 static final String READ_ONLY = "linkfield-readonly";
51
52 private final ItemResolver<T> itemResolver;
53 private final TextField innerComponent;
54
55 @Inject
56 TextLinkField(ItemResolver<T> itemResolver, TextField innerComponent) {
57 super(innerComponent);
58 this.innerComponent = innerComponent;
59 this.itemResolver = itemResolver;
60 }
61
62 @Override
63 protected void doSetValue(String value) {
64 super.doSetValue(Optional.ofNullable(value).orElseGet(this::getEmptyValue));
65 }
66
67 @Override
68 public Optional<T> getSelectedItem() {
69 return getOptionalValue()
70 .flatMap(itemResolver::getItemById);
71 }
72
73 @Override
74 public void setSelectedItem(T item) {
75 setValue(itemResolver.getId(item));
76 }
77
78 @Override
79 public void setReadOnly(boolean readOnly) {
80 super.setReadOnly(readOnly);
81 innerComponent.setReadOnly(readOnly);
82 handleReadOnlyStyle(readOnly);
83 }
84
85 private void handleReadOnlyStyle(boolean readOnly) {
86 if (readOnly) {
87 innerComponent.addStyleName(READ_ONLY);
88 } else {
89 innerComponent.removeStyleName(READ_ONLY);
90 }
91 }
92 }