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1
22
23 package org.meshcms.taglib;
24
25 import java.io.*;
26 import java.util.*;
27 import javax.servlet.http.*;
28 import javax.servlet.jsp.*;
29 import org.meshcms.core.*;
30 import org.meshcms.util.*;
31
32
36 public final class SetLocale extends AbstractTag {
37 public static final String  REDIRECT_ATTRIBUTE = "meshcms-redirect";
38
39 private String value;
40 private String defaultValue;
41 private String redirectRoot;
42
43 public void writeTag() throws IOException {
44 if (Utils.isTrue(redirectRoot) &&
45 webSite.getSiteMap().getPathInMenu(pagePath).isRoot()) {
46 if (setRedirectToLanguage(request,
47 (HttpServletResponse) pageContext.getResponse())) {
48 return;
49 }
50 }
51
52 Locale locale = null;
53
54 if (value != null) {
55 locale = Utils.getLocale(value);
56 } else if (!pagePath.isRoot()) {
57 for (int i = pagePath.getElementCount() - 1; locale == null && i >= 0; i--) {
58 locale = Utils.getLocale(pagePath.getElementAt(i));
59 }
60 }
61
62 if (locale == null) {
63 locale = Utils.getLocale(defaultValue);
64 }
65
66 if (locale != null) {
67 pageContext.setAttribute(HitFilter.LOCALE_ATTRIBUTE, locale,
68 PageContext.REQUEST_SCOPE);
69 }
70 }
71
72 public String getValue() {
73 return value;
74 }
75
76 public void setValue(String value) {
77 this.value = value;
78 }
79
80 public String getDefaultValue() {
81 return defaultValue;
82 }
83
84 public void setDefaultValue(String defaultValue) {
85 this.defaultValue = defaultValue;
86 }
87
88 public String getRedirectRoot() {
89 return redirectRoot;
90 }
91
92 public void setRedirectRoot(String redirectRoot) {
93 this.redirectRoot = redirectRoot;
94 }
95
96 public static boolean setRedirectToLanguage(HttpServletRequest request,
97 HttpServletResponse response) throws IOException {
98 if (response.isCommitted()) {
99 return false;
100 }
101
102 WebSite webSite = (WebSite) request.getAttribute(HitFilter.WEBSITE_ATTRIBUTE);
103 List available = webSite.getSiteMap().getLangList();
104 String [] accepted = WebUtils.getAcceptedLanguages(request);
105 SiteMap.CodeLocalePair chosen = null;
106
107 if (available != null && available.size() > 0) {
108 for (int i = 0; chosen == null && i < accepted.length; i++) {
109 Iterator iter = available.iterator();
110
111 while (chosen == null && iter.hasNext()) {
112 SiteMap.CodeLocalePair clp = (SiteMap.CodeLocalePair) iter.next();
113
114 if (clp.getCode().equalsIgnoreCase(accepted[i])) {
115 chosen = clp;
116 }
117 }
118 }
119
120 if (chosen == null) {
121 chosen = (SiteMap.CodeLocalePair) available.get(0);
122 }
123
124 WebUtils.setBlockCache(request);
125 request.setAttribute(REDIRECT_ATTRIBUTE, request.getContextPath() + '/' +
126 chosen.getCode() + '/');
127 return true;
128 }
129
130 return false;
131 }
132 }
133
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