1 /**
2 * This file Copyright (c) 2014-2018 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.workbench.tree;
35
36 import info.magnolia.ui.vaadin.grid.MagnoliaTreeTable;
37
38 import com.vaadin.v7.data.Container;
39 import com.vaadin.v7.data.Item;
40 import com.vaadin.v7.ui.TreeTable;
41
42 /**
43 * Just like {@link RowScroller} - brings tree table rows into view and also expands the parent
44 * nodes if needed.
45 */
46 public class TreeRowScroller extends RowScroller {
47
48 public TreeRowScroller(TreeTable table) {
49 super(table);
50 }
51
52 @Override
53 public void bringRowIntoView(Object rowId) {
54 expandTreeToNode(rowId, false);
55 super.bringRowIntoView(rowId);
56 }
57
58 @Override
59 public TreeTable getParent() {
60 return (TreeTable) super.getParent();
61 }
62
63 @Override
64 protected int getItemIndex(Object itemId) {
65 if (getParent() instanceof MagnoliaTreeTable) {
66 return ((MagnoliaTreeTable)getParent()).indexOfId(itemId);
67 }
68 return super.getItemIndex(itemId);
69 }
70
71 public void expandTreeToNode(Object id, boolean expandNode) {
72 Container.Hierarchical container = getParent().getContainerDataSource();
73 Item item = container.getItem(id);
74
75 if (item == null) {
76 return;
77 }
78
79 // Determine node to expand.
80 Object node = null;
81 if (!container.areChildrenAllowed(id)) {
82 node = container.getParent(id);
83 } else {
84 if (expandNode) {
85 node = id;
86 } else {
87 Object parent = container.getParent(id);
88 // Check if item is root.
89 if (parent != null) {
90 node = parent;
91 }
92 }
93 }
94
95 // as long as parent is within the scope of the workbench
96 while (node != null) {
97 getParent().setCollapsed(node, false);
98 node = container.getParent(node);
99 }
100
101 }
102 }