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16 package org.apache.cocoon.faces.taglib;
17
18 import org.apache.cocoon.taglib.TagSupport;
19 import org.apache.cocoon.util.ClassUtils;
20
21 import org.apache.cocoon.faces.FacesUtils;
22 import org.xml.sax.Attributes  ;
23 import org.xml.sax.SAXException ;
24
25 import javax.faces.FacesException;
26 import javax.faces.context.FacesContext;
27 import java.util.ArrayList ;
28 import java.util.Collection ;
29 import java.util.Enumeration ;
30 import java.util.HashMap ;
31 import java.util.HashSet ;
32 import java.util.Map ;
33 import java.util.ResourceBundle ;
34 import java.util.Set ;
35
36
39 public class LoadBundleTag extends TagSupport {
40
41 private String basename;
42 private String var;
43
44 public void setBasename(String basename) {
45 this.basename = basename;
46 }
47
48 public void setVar(String var) {
49 this.var = var;
50 }
51
52 public int doStartTag(String namespaceURI, String localName, String qName, Attributes atts) throws SAXException {
53 final FacesContext context = FacesUtils.getFacesContext(this, objectModel);
54
55 final String basename = (String ) FacesUtils.evaluate(context, this.basename);
56
57 final ResourceBundle bundle = ResourceBundle.getBundle(basename,
58 context.getViewRoot().getLocale(),
59 ClassUtils.getClassLoader());
60
61 if (bundle == null) {
62 throw new FacesException("Tag <" + getClass().getName() + "> " +
63 "could not find ResourceBundle for <" + basename + ">");
64 }
65
66 context.getExternalContext().getRequestMap().put(this.var, new BundleMap(bundle));
67
68 return SKIP_BODY;
69 }
70
71 public void recycle() {
72 super.recycle();
73 this.basename = null;
74 this.var = null;
75 }
76 }
77
78 class BundleMap implements Map {
79 private ResourceBundle bundle;
80
81 public BundleMap (ResourceBundle bundle) {
82 this.bundle = bundle;
83 }
84
85 public void clear() {
86 throw new UnsupportedOperationException ("BundleMap does not support clear()");
87 }
88
89 public boolean containsKey(Object key) {
90 if (key == null) {
91 return false;
92 }
93
94 try {
95 this.bundle.getObject(key.toString());
96 return true;
97 } catch (Exception e) {
98 return false;
99 }
100 }
101
102 public boolean containsValue(Object value) {
103 if (value == null) {
104 return false;
105 }
106
107 for (Enumeration i = this.bundle.getKeys(); i.hasMoreElements();) {
108 Object obj = bundle.getObject((String ) i.nextElement());
109 if (value == obj || value.equals(obj)) {
110 return true;
111 }
112 }
113
114 return false;
115 }
116
117 public Set entrySet() {
118 final HashMap entries = new HashMap ();
119 for (Enumeration i = this.bundle.getKeys(); i.hasMoreElements();) {
120 String key = (String ) i.nextElement();
121 entries.put(key, this.bundle.getObject(key));
122 }
123
124 return entries.entrySet();
125 }
126
127 public boolean equals(Object obj) {
128 if (obj == null || !(obj instanceof Map )) {
129 return false;
130 }
131
132 return entrySet().equals(((Map ) obj).entrySet());
133 }
134
135 public Object get(Object key) {
136 if (key == null) {
137 return null;
138 }
139
140 return bundle.getObject(key.toString());
141 }
142
143 public int hashCode() {
144 return this.bundle.hashCode();
145 }
146
147 public boolean isEmpty() {
148 return !this.bundle.getKeys().hasMoreElements();
149 }
150
151 public Set keySet() {
152 final Set keys = new HashSet ();
153 for (Enumeration i = this.bundle.getKeys(); i.hasMoreElements();) {
154 keys.add(i.nextElement());
155 }
156 return keys;
157 }
158
159 public Object put(Object k, Object v) {
160 throw new UnsupportedOperationException ("BundleMap does not support put()");
161 }
162
163 public void putAll(Map t) {
164 throw new UnsupportedOperationException ("BundleMap does not support putAll()");
165 }
166
167 public Object remove(Object k) {
168 throw new UnsupportedOperationException ("BundleMap does not support remove()");
169 }
170
171 public int size() {
172 int result = 0;
173 for (Enumeration i = this.bundle.getKeys(); i.hasMoreElements();) {
174 i.nextElement();
175 result ++;
176 }
177
178 return result;
179 }
180
181 public Collection values() {
182 ArrayList values = new ArrayList ();
183 for (Enumeration i = this.bundle.getKeys(); i.hasMoreElements();) {
184 values.add(this.bundle.getObject((String ) i.nextElement()));
185 }
186 return values;
187 }
188 }
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