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1 | /* | |
2 | * See the NOTICE file distributed with this work for additional | |
3 | * information regarding copyright ownership. | |
4 | * | |
5 | * This is free software; you can redistribute it and/or modify it | |
6 | * under the terms of the GNU Lesser General Public License as | |
7 | * published by the Free Software Foundation; either version 2.1 of | |
8 | * the License, or (at your option) any later version. | |
9 | * | |
10 | * This software is distributed in the hope that it will be useful, | |
11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
13 | * Lesser General Public License for more details. | |
14 | * | |
15 | * You should have received a copy of the GNU Lesser General Public | |
16 | * License along with this software; if not, write to the Free | |
17 | * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA | |
18 | * 02110-1301 USA, or see the FSF site: http://www.fsf.org. | |
19 | */ | |
20 | package org.xwiki.rendering.internal.listener.descriptor; | |
21 | ||
22 | import java.lang.reflect.Method; | |
23 | import java.lang.reflect.Type; | |
24 | import java.util.Map; | |
25 | import java.util.concurrent.ConcurrentHashMap; | |
26 | ||
27 | import org.xwiki.component.annotation.Component; | |
28 | import org.xwiki.rendering.listener.Listener; | |
29 | import org.xwiki.rendering.listener.descriptor.ListenerDescriptor; | |
30 | import org.xwiki.rendering.listener.descriptor.ListenerDescriptorManager; | |
31 | import org.xwiki.rendering.listener.descriptor.ListenerElement; | |
32 | ||
33 | /** | |
34 | * Default implementation of {@link ListenerDescriptorManager}. | |
35 | * | |
36 | * @version $Id: 8f200e0e9a602b2dca5c6e61ac4f8251cddf242b $ | |
37 | * @since 3.3M1 | |
38 | */ | |
39 | @Component | |
40 | public class DefaultListenerDescriptorManager implements ListenerDescriptorManager | |
41 | { | |
42 | /** | |
43 | * The prefix of the begin events. | |
44 | */ | |
45 | private static final String PREFIX_BEGIN = "begin"; | |
46 | ||
47 | /** | |
48 | * The prefix of the end events. | |
49 | */ | |
50 | private static final String PREFIX_END = "end"; | |
51 | ||
52 | /** | |
53 | * The prefix of the on events. | |
54 | */ | |
55 | private static final String PREFIX_ON = "on"; | |
56 | ||
57 | /** | |
58 | * The descriptors. | |
59 | */ | |
60 | private Map<Class< ? >, ListenerDescriptor> descriptors = new ConcurrentHashMap<Class< ? >, ListenerDescriptor>(); | |
61 | ||
62 | 120 |
![]() |
63 | public ListenerDescriptor getListenerDescriptor(Class< ? > type) | |
64 | { | |
65 | 120 | ListenerDescriptor descriptor = this.descriptors.get(type); |
66 | 120 | if (descriptor == null) { |
67 | 12 | descriptor = createDescriptor(type); |
68 | 12 | this.descriptors.put(type, descriptor); |
69 | } | |
70 | ||
71 | 120 | return descriptor; |
72 | } | |
73 | ||
74 | /** | |
75 | * @param type the class of the listener | |
76 | * @return the descriptor of the listener | |
77 | */ | |
78 | 12 |
![]() |
79 | { | |
80 | 12 | ListenerDescriptor descriptor = new ListenerDescriptor(); |
81 | ||
82 | 12 | for (Method method : Listener.class.getMethods()) { |
83 | 612 | String methodName = method.getName(); |
84 | ||
85 | 612 | String elementName; |
86 | 612 | if (methodName.startsWith(PREFIX_BEGIN)) { |
87 | 240 | elementName = methodName.substring(PREFIX_BEGIN.length(), methodName.length()); |
88 | 372 | } else if (methodName.startsWith(PREFIX_END)) { |
89 | 240 | elementName = methodName.substring(PREFIX_END.length(), methodName.length()); |
90 | 132 | } else if (methodName.startsWith(PREFIX_ON)) { |
91 | 132 | elementName = methodName.substring(PREFIX_ON.length(), methodName.length()); |
92 | } else { | |
93 | 0 | elementName = null; |
94 | } | |
95 | ||
96 | 612 | if (elementName != null) { |
97 | 612 | elementName = |
98 | Character.toLowerCase(elementName.charAt(0)) + elementName.substring(1, elementName.length()); | |
99 | ||
100 | 612 | ListenerElement element = descriptor.getElements().get(elementName.toLowerCase()); |
101 | ||
102 | 612 | if (element == null) { |
103 | 372 | element = new ListenerElement(elementName); |
104 | ||
105 | 372 | for (Type parameterType : method.getGenericParameterTypes()) { |
106 | 504 | element.getParameters().add(parameterType); |
107 | } | |
108 | ||
109 | 372 | descriptor.getElements().put(elementName.toLowerCase(), element); |
110 | } | |
111 | ||
112 | 612 | if (methodName.startsWith(PREFIX_BEGIN)) { |
113 | 240 | element.setBeginMethod(method); |
114 | 372 | } else if (methodName.startsWith(PREFIX_END)) { |
115 | 240 | element.setEndMethod(method); |
116 | } else { | |
117 | 132 | element.setOnMethod(method); |
118 | } | |
119 | } | |
120 | ||
121 | } | |
122 | ||
123 | 12 | return descriptor; |
124 | } | |
125 | } |
|