|
1
14
15 package com.sun.facelets.tag.jsf.core;
16
17 import java.io.IOException  ;
18 import java.util.Collection ;
19 import java.util.Enumeration ;
20 import java.util.HashSet ;
21 import java.util.Locale ;
22 import java.util.Map ;
23 import java.util.MissingResourceException ;
24 import java.util.ResourceBundle ;
25 import java.util.Set ;
26
27 import javax.el.ELException;
28 import javax.faces.FacesException;
29 import javax.faces.component.UIComponent;
30 import javax.faces.component.UIViewRoot;
31 import javax.faces.context.FacesContext;
32
33 import com.sun.facelets.FaceletContext;
34 import com.sun.facelets.FaceletException;
35 import com.sun.facelets.tag.TagAttribute;
36 import com.sun.facelets.tag.TagAttributeException;
37 import com.sun.facelets.tag.TagConfig;
38 import com.sun.facelets.tag.TagHandler;
39 import com.sun.facelets.tag.jsf.ComponentSupport;
40
41
51 public final class LoadBundleHandler extends TagHandler {
52
53 private final static class ResourceBundleMap implements Map {
54 private final static class ResourceEntry implements Map.Entry {
55
56 protected final String key;
57
58 protected final String value;
59
60 public ResourceEntry(String key, String value) {
61 this.key = key;
62 this.value = value;
63 }
64
65 public Object getKey() {
66 return this.key;
67 }
68
69 public Object getValue() {
70 return this.value;
71 }
72
73 public Object setValue(Object value) {
74 throw new UnsupportedOperationException ();
75 }
76
77 public int hashCode() {
78 return this.key.hashCode();
79 }
80
81 public boolean equals(Object obj) {
82 return (obj instanceof ResourceEntry && this.hashCode() == obj
83 .hashCode());
84 }
85 }
86
87 protected final ResourceBundle bundle;
88
89 public ResourceBundleMap(ResourceBundle bundle) {
90 this.bundle = bundle;
91 }
92
93 public void clear() {
94 throw new UnsupportedOperationException ();
95 }
96
97 public boolean containsKey(Object key) {
98 try {
99 bundle.getString(key.toString());
100 return true;
101 } catch (MissingResourceException e) {
102 return false;
103 }
104 }
105
106 public boolean containsValue(Object value) {
107 throw new UnsupportedOperationException ();
108 }
109
110 public Set entrySet() {
111 Enumeration e = this.bundle.getKeys();
112 Set s = new HashSet ();
113 String k;
114 while (e.hasMoreElements()) {
115 k = (String ) e.nextElement();
116 s.add(new ResourceEntry(k, this.bundle.getString(k)));
117 }
118 return s;
119 }
120
121 public Object get(Object key) {
122 return this.bundle.getObject((String ) key);
123 }
124
125 public boolean isEmpty() {
126 return false;
127 }
128
129 public Set keySet() {
130 Enumeration e = this.bundle.getKeys();
131 Set s = new HashSet ();
132 while (e.hasMoreElements()) {
133 s.add(e.nextElement());
134 }
135 return s;
136 }
137
138 public Object put(Object key, Object value) {
139 throw new UnsupportedOperationException ();
140 }
141
142 public void putAll(Map t) {
143 throw new UnsupportedOperationException ();
144 }
145
146 public Object remove(Object key) {
147 throw new UnsupportedOperationException ();
148 }
149
150 public int size() {
151 return this.keySet().size();
152 }
153
154 public Collection values() {
155 Enumeration e = this.bundle.getKeys();
156 Set s = new HashSet ();
157 while (e.hasMoreElements()) {
158 s.add(this.bundle.getObject((String ) e.nextElement()));
159 }
160 return s;
161 }
162 }
163
164 private final TagAttribute basename;
165
166 private final TagAttribute var;
167
168
171 public LoadBundleHandler(TagConfig config) {
172 super(config);
173 this.basename = this.getRequiredAttribute("basename");
174 this.var = this.getRequiredAttribute("var");
175 }
176
177
183 public void apply(FaceletContext ctx, UIComponent parent)
184 throws IOException , FacesException, FaceletException, ELException {
185 UIViewRoot root = ComponentSupport.getViewRoot(ctx, parent);
186 ResourceBundle bundle = null;
187 try {
188 String name = this.basename.getValue(ctx);
189 ClassLoader cl = Thread.currentThread().getContextClassLoader();
190 if (root != null && root.getLocale() != null) {
191 bundle = ResourceBundle.getBundle(name, root.getLocale(), cl);
192 } else {
193 bundle = ResourceBundle
194 .getBundle(name, Locale.getDefault(), cl);
195 }
196 } catch (Exception e) {
197 throw new TagAttributeException(this.tag, this.basename, e);
198 }
199 ResourceBundleMap map = new ResourceBundleMap(bundle);
200 FacesContext faces = ctx.getFacesContext();
201 faces.getExternalContext().getRequestMap().put(this.var.getValue(ctx),
202 map);
203 }
204 }
205 |
Popular Tags |
Java API By Example, From Geeks To Geeks.