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.contentapp.browser;
35
36 import static java.util.stream.Collectors.toSet;
37
38 import info.magnolia.objectfactory.Components;
39 import info.magnolia.ui.ValueContext;
40 import info.magnolia.ui.contentapp.configuration.TreeViewDefinition;
41 import info.magnolia.ui.filter.DataFilter;
42 import info.magnolia.ui.filter.FilterContext;
43
44 import java.util.Set;
45
46 import javax.inject.Inject;
47
48 import com.vaadin.ui.TreeGrid;
49
50 /**
51 * Tree content view implementation.
52 * @param <T> item type.
53 */
54 public class TreeView<T> extends GridView<T, TreePresenter<T>> implements ContentView {
55
56 @Inject
57 public TreeView(ValueContext<T> valueContext, TreeViewDefinition<T> definition, FilterContext filterContext) {
58 super(valueContext, definition);
59
60 final TreeGrid<T> treeGrid = treeGrid();
61 treeGrid.addCollapseListener(e -> treeGrid.getEditor().cancel());
62 treeGrid.addSelectionListener(e -> expandParents(e.getAllSelectedItems()));
63
64 //make sure items expanded when selected in flat (filtering) mode and returned to tree mode (all filters cleared)
65 filterContext.getFilter().observe(dataFilter -> dataFilter
66 .filter(DataFilter::isEmpty)
67 .ifPresent(any -> expandParents(valueContext.get().collect(toSet())))
68 );
69 }
70
71 /**
72 * @deprecated since 6.2.4. Use {@link #TreeView(info.magnolia.ui.ValueContext, info.magnolia.ui.contentapp.configuration.TreeViewDefinition, info.magnolia.ui.filter.FilterContext)} instead.
73 */
74 @Deprecated
75 public TreeView(ValueContext<T> valueContext, TreeViewDefinition<T> definition) {
76 this(valueContext, definition, Components.getComponent(FilterContext.class));
77 }
78
79 @Override
80 protected TreePresenter<T> createPresenter() {
81 return create(TreePresenter.class, this, this.definition);
82 }
83
84 protected TreeGrid<T> treeGrid() {
85 return (TreeGrid<T>) this.grid;
86 }
87
88 private void expandParents(Set<T> items) {
89 treeGrid().expand(items.stream()
90 .filter(presenter::isItemAvailable)
91 .flatMap(presenter::getParents)
92 .collect(toSet())
93 );
94 }
95 }