1 /**
2 * This file Copyright (c) 2013-2018 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.i18nsystem.proxytoys;
35
36 import java.lang.reflect.Method;
37 import java.util.Collection;
38 import java.util.List;
39 import java.util.Map;
40
41 import com.google.common.base.Function;
42 import com.google.common.collect.Collections2;
43 import com.google.common.collect.Lists;
44 import com.google.common.collect.Maps;
45 import com.thoughtworks.proxy.toys.decorate.Decorator;
46
47 /**
48 * A {@link Decorator} which decorates return values by passing them to {@link ProxytoysI18nizer#decorateChild(Object, Object)}.
49 * If the returned value is a Collection, each item in the collection is decorated.
50 *
51 * @param <P> the decorated type
52 */
53 class ChildDecorator<P> extends Decorator<P> {
54 private final ProxytoysI18nizer proxyCreator;
55
56 ChildDecorator(ProxytoysI18nizer proxyCreator) {
57 this.proxyCreator = proxyCreator;
58 }
59
60 @Override
61 public Object decorateResult(P proxy, Method method, Object[] args, Object result) {
62 final P parent = proxy;
63 final Object decoratedReturnValue;
64 if (result instanceof Map) {
65 decoratedReturnValue = Maps.transformValues((Map) result, new ChildDecoratorFunction(parent));
66 } else if (result instanceof Collection) {
67 // We can't use Collections2.transform() or Lists.transform() as these create new immutable collections
68 if (result instanceof List) {
69 //this is wrapped in newArrayList() to make it modifiable since info.magnolia.ui.contentapp.movedialog.MoveDialogPresenterImpl#prepareWorkbenchDefinition relies on it (just for compatibility although it should be fixed there)
70 decoratedReturnValue = Lists.newArrayList(Lists.transform(((List) result), new ChildDecoratorFunction(parent)));
71 } else {
72 decoratedReturnValue = Collections2.transform((Collection) result, new ChildDecoratorFunction(parent));
73 }
74 } else {
75 decoratedReturnValue = proxyCreator.decorateChild(result, parent);
76 }
77 return decoratedReturnValue;
78 }
79
80 private class ChildDecoratorFunction implements Function {
81 private final P parent;
82
83 public ChildDecoratorFunction(P parent) {
84 this.parent = parent;
85 }
86
87 @Override
88 public Object apply(Object element) {
89 return proxyCreator.decorateChild(element, parent);
90 }
91 }
92 }