001    package org.apache.myfaces.tobago.context;
002    
003    /*
004     * Licensed to the Apache Software Foundation (ASF) under one or more
005     * contributor license agreements.  See the NOTICE file distributed with
006     * this work for additional information regarding copyright ownership.
007     * The ASF licenses this file to You under the Apache License, Version 2.0
008     * (the "License"); you may not use this file except in compliance with
009     * the License.  You may obtain a copy of the License at
010     *
011     *      http://www.apache.org/licenses/LICENSE-2.0
012     *
013     * Unless required by applicable law or agreed to in writing, software
014     * distributed under the License is distributed on an "AS IS" BASIS,
015     * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
016     * See the License for the specific language governing permissions and
017     * limitations under the License.
018     */
019    
020    import java.io.Serializable;
021    import java.util.ArrayList;
022    import java.util.Collections;
023    import java.util.List;
024    import java.util.Locale;
025    
026    public class UserAgent implements Serializable {
027    
028      private static final long serialVersionUID = -3138810465122379395L;
029    
030      public static final String DEFAULT_NAME = "standard";
031    
032      public static final UserAgent DEFAULT = new UserAgent(null, null);
033    
034    
035      public static final UserAgent MSIE = new UserAgent("msie", null);
036    
037      public static final UserAgent MSIE_5_0 = new UserAgent("msie", "5_0");
038    
039      public static final UserAgent MSIE_5_5 = new UserAgent("msie", "5_5");
040    
041      public static final UserAgent MSIE_6_0 = new UserAgent("msie", "6_0");
042    
043      public static final UserAgent MSIE_7_O = new UserAgent("msie", "7_0");
044    
045      public static final UserAgent MSIE_5_0_MAC = new UserAgent("msie", "5_0_mac");
046    
047      public static final UserAgent MSIE_6_0_MAC = new UserAgent("msie", "6_0_mac");
048    
049    
050      public static final UserAgent OPERA = new UserAgent("opera", null);
051    
052      public static final UserAgent OPERA_5_0 = new UserAgent("opera", "5_0");
053    
054      public static final UserAgent OPERA_6_0 = new UserAgent("opera", "6_0");
055    
056      public static final UserAgent OPERA_7_11 = new UserAgent("opera", "7_11");
057    
058    
059      public static final UserAgent MOZILLA = new UserAgent("mozilla", null);
060    
061      public static final UserAgent MOZILLA_4_7 = new UserAgent("mozilla", "4_7");
062    
063      public static final UserAgent MOZILLA_5_0 = new UserAgent("mozilla", "5_0");
064    
065      public static final UserAgent MOZILLA_5_0_R1_6 = new UserAgent("mozilla", "5_0_r1_6");
066    
067    
068      private String name;
069    
070      private String version;
071    
072    
073      private UserAgent(String name, String version) {
074        this.name = name;
075        this.version = version;
076      }
077    
078    
079      public boolean isMsie() {
080        return MSIE.name.equals(name);
081      }
082    
083      public boolean isMozilla() {
084        return MOZILLA.name.equals(name);
085      }
086    
087      public List<String> getFallbackList() {
088        return getFallbackList(false);
089      }
090    
091      private List<String> getFallbackList(boolean reverseOrder) {
092        List<String> list = new ArrayList<String>(3);
093        if (version != null) {
094          list.add(name + '_' + version);
095        }
096        if (name != null) {
097          list.add(name);
098        }
099        list.add(DEFAULT_NAME);
100        if (reverseOrder) {
101          Collections.reverse(list);
102        }
103        return list;
104      }
105    
106      public static UserAgent getInstance(String header) {
107        if (header == null) {
108          return DEFAULT;
109        }
110    
111        header = header.toLowerCase(Locale.ENGLISH).replace('/', ' ');
112        if (header.indexOf("opera") > -1) {
113          if (header.indexOf("opera 5.0") > -1) {
114            return OPERA_5_0;
115          } else if (header.indexOf("opera 6.0") > -1) {
116            return OPERA_6_0;
117          } else if (header.indexOf("opera 7.11") > -1) {
118            return OPERA_7_11;
119          } else {
120            return OPERA;
121          }
122        } else if (header.indexOf("msie") > -1) {
123          if (header.indexOf("msie 5.0") > -1) {
124            if (header.indexOf("mac") > -1) {
125              return MSIE_5_0_MAC;
126            } else {
127              return MSIE_5_0;
128            }
129          } else if (header.indexOf("msie 5.5") > -1) {
130            return MSIE_5_5;
131          } else if (header.indexOf("msie 6.0") > -1) {
132            if (header.indexOf("mac") > -1) {
133              return MSIE_6_0_MAC;
134            } else {
135              return MSIE_6_0;
136            }
137          } else if (header.indexOf("msie 7.0") > -1) {
138            return MSIE_7_O;
139          } else {
140            return MSIE;
141          }
142        } else if (header.indexOf("mozilla") > -1) {
143          if (header.indexOf("mozilla 4.7") > -1) {
144            return MOZILLA_4_7;
145          } else if (header.indexOf("mozilla 5.0") > -1) {
146            if (header.indexOf("rv:1.6") > -1) {
147              return MOZILLA_5_0_R1_6;
148            } else {
149              return MOZILLA_5_0;
150            }
151          } else {
152            return MOZILLA;
153          }
154        }
155    
156        return DEFAULT;
157      }
158    
159      public static UserAgent getInstanceForId(String id) {
160        if (id == null) {
161          return DEFAULT;
162        }
163    
164        if (id.indexOf("opera") == 0) {
165          if (id.equals("opera_5_0")) {
166            return OPERA_5_0;
167          } else if (id.equals("opera_6_0")) {
168            return OPERA_6_0;
169          } else if (id.equals("opera_7_11")) {
170            return OPERA_7_11;
171          } else {
172            return OPERA;
173          }
174        } else if (id.indexOf("msie") == 0) {
175          if (id.equals("msie_5_0")) {
176            return MSIE_5_0;
177          } else if (id.equals("msie_5_0_mac")) {
178            return MSIE_5_0_MAC;
179          } else if (id.equals("msie_5_5")) {
180            return MSIE_5_5;
181          } else if (id.equals("msie_6_0")) {
182            return MSIE_6_0;
183          } else if (id.equals("msie_6_0_mac")) {
184            return MSIE_6_0_MAC;
185          } else if (id.equals("msie_7_0")) {
186            return MSIE_7_O;
187          } else {
188            return MSIE;
189          }
190        } else if (id.indexOf("mozilla") == 0) {
191          if (id.equals("mozilla_4_7")) {
192            return MOZILLA_4_7;
193          } else if (id.equals("mozilla_5_0")) {
194            return MOZILLA_5_0;
195          } else if (id.equals("mozilla_5_0_r1_6")) {
196            return MOZILLA_5_0_R1_6;
197          } else {
198            return MOZILLA;
199          }
200        }
201    
202        return DEFAULT;
203      }
204    
205    
206      /**
207       * @deprecated don't use toString() functionallity!
208       */
209      public String toString() {
210        return version != null
211            ? name + '_' + version
212            : name;
213      }
214    }
215