1 /**
2 * This file Copyright (c) 2018 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.framework.chooser;
35
36 import static java.util.stream.Collectors.toSet;
37
38 import info.magnolia.ui.contentapp.browser.Workbench;
39 import info.magnolia.ui.framework.chooser.definition.WorkbenchChooserDefinition;
40
41 import java.util.Collections;
42 import java.util.Set;
43 import java.util.function.Consumer;
44
45 import com.vaadin.ui.Component;
46
47 /**
48 * Chooser based on {@link Workbench}, usually corresponding to an app which uses the same workbench.
49 *
50 * @param <DD> type of datasource definition
51 * @param <T> type of items to be selected
52 */
53 public class WorkbenchChooser<DD, T> implements Chooser<Set<T>> {
54
55 private final String title;
56 private final ChooseBrowser<T> browser;
57
58 public WorkbenchChooser(WorkbenchChooserDefinition<DD, T> definition) {
59 this.title = definition.getTitle();
60
61 bindDatasourceDefinition(definition.getDatasource());
62 browser = create(ChooseBrowser.class, definition.getWorkbench());
63 }
64
65 @Override
66 public String getTitle() {
67 return this.title;
68 }
69
70 @Override
71 public Component asVaadinComponent() {
72 return browser;
73 }
74
75 @Override
76 public void onChange(Consumer<Set<T>> callback) {
77 browser.valueContext.observeNullable(items -> callback.accept(items.stream().collect(toSet())));
78 }
79
80 @Override
81 public Set<T> getChoice() {
82 return browser.valueContext.current().value()
83 .map(selectedItems -> selectedItems.stream().collect(toSet()))
84 .orElse(Collections.emptySet());
85 }
86
87 public void setChoice(Set<T> choice) {
88 browser.setSelection(choice);
89 }
90 }