1 /**
2 * This file Copyright (c) 2010-2018 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.vaadin.gwt.client.layout.lazylayout.connector;
35
36 import info.magnolia.ui.vaadin.gwt.shared.Range;
37
38 import java.io.Serializable;
39 import java.util.ArrayList;
40 import java.util.Collections;
41 import java.util.List;
42
43 import com.vaadin.shared.AbstractComponentState;
44
45 /**
46 * ThumbnailLayoutState.
47 */
48 public class ThumbnailLayoutState extends AbstractComponentState {
49
50 public int elementAmount = 0;
51
52 public int offset = 0;
53
54 public float scaleRatio = -1;
55
56 public ThumbnailSize size = new ThumbnailSize();
57
58 public SelectionModel selection = new SelectionModel();
59
60 /**
61 * Is {@code true} only during the first request.
62 */
63 public boolean isFirstUpdate = true;
64
65 /**
66 * ThumbnailSize.
67 */
68 public static class ThumbnailSize implements Serializable {
69
70 public int width = 0;
71
72 public int height = 0;
73 }
74
75 /**
76 * Selection model.
77 */
78 public static class SelectionModel implements Serializable {
79
80 public List<Integer> selectedIndices = new ArrayList<>();
81
82 public int min = -1;
83
84 public int max = -1;
85
86 public void toggleSelection(int index) {
87 int indexToSelect = index;
88 if (selectedIndices.size() == 1 && selectedIndices.contains(index)) {
89 indexToSelect = -1;
90 }
91
92 selectedIndices.clear();
93
94 if (indexToSelect >= 0) {
95 selectedIndices.add(indexToSelect);
96 }
97
98 this.min = indexToSelect;
99 this.max = indexToSelect;
100 }
101
102 public void toggleMultiSelection(int index) {
103 if (index < 0) {
104 throw new IllegalArgumentException("Index must be non-negative");
105 }
106
107 if (!selectedIndices.contains(index)) {
108 selectedIndices.add(index);
109 } else {
110 selectedIndices.remove(Integer.valueOf(index));
111 }
112
113 this.min = Collections.min(selectedIndices);
114 this.max = Collections.max(selectedIndices);
115 }
116
117 public Range getSelectionBoundaries() {
118 if (selectedIndices.isEmpty()) {
119 // return empty
120 return Range.between(0, 0);
121 }
122 return Range.between(min, max + 1);
123 }
124 }
125 }