01: /*
02: * $Id: PropertiesVocabSource.java 471756 2006-11-06 15:01:43Z husted $
03: *
04: * Licensed to the Apache Software Foundation (ASF) under one
05: * or more contributor license agreements. See the NOTICE file
06: * distributed with this work for additional information
07: * regarding copyright ownership. The ASF licenses this file
08: * to you under the Apache License, Version 2.0 (the
09: * "License"); you may not use this file except in compliance
10: * with the License. You may obtain a copy of the License at
11: *
12: * http://www.apache.org/licenses/LICENSE-2.0
13: *
14: * Unless required by applicable law or agreed to in writing,
15: * software distributed under the License is distributed on an
16: * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
17: * KIND, either express or implied. See the License for the
18: * specific language governing permissions and limitations
19: * under the License.
20: */
21: package org.apache.struts2.showcase.hangman;
22:
23: import java.util.ArrayList;
24: import java.util.List;
25: import java.util.Map;
26: import java.util.Properties;
27:
28: public class PropertiesVocabSource implements VocabSource {
29:
30: private Properties prop;
31: private List<Vocab> vocabs;
32:
33: public PropertiesVocabSource() {
34: }
35:
36: public PropertiesVocabSource(Properties prop) {
37: assert (prop != null);
38: this .prop = prop;
39: vocabs = readVocab(prop);
40: }
41:
42: public void setVocabProperties(Properties prop) {
43: assert (prop != null);
44: this .prop = prop;
45: vocabs = readVocab(prop);
46: }
47:
48: public Vocab getRandomVocab() {
49: if (vocabs == null) {
50: throw new HangmanException(HangmanException.Type
51: .valueOf("NO_VOCAB_SOURCE"), "No vocab source");
52: }
53: if (vocabs.size() <= 0) {
54: throw new HangmanException(HangmanException.Type
55: .valueOf("NO_VOCAB"), "No vocab");
56: }
57: long vocabIndex = Math.round((Math.random() * (double) prop
58: .size()));
59: vocabIndex = vocabIndex == vocabs.size() ? vocabs.size() - 1
60: : vocabIndex;
61: return vocabs.get((int) vocabIndex);
62: }
63:
64: protected List<Vocab> readVocab(Properties prop) {
65: List<Vocab> vocabList = new ArrayList<Vocab>();
66:
67: for (Map.Entry e : prop.entrySet()) {
68: String vocab = (String) e.getKey();
69: String hint = (String) e.getValue();
70:
71: vocabList.add(new Vocab(vocab, hint));
72: }
73: return vocabList;
74: }
75: }
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