dion 2003/01/17 22:25:15
Modified: jelly/jelly-tags/fmt/src/java/org/apache/commons/jelly/tags/fmt
SetLocaleTag.java
Log:
Applied patch from Willie Vu
Revision Changes Path
1.2 +152 -7
jakarta-commons-sandbox/jelly/jelly-tags/fmt/src/java/org/apache/commons/jelly/tags/fmt/SetLocaleTag.java
Index: SetLocaleTag.java
===================================================================
RCS file:
/home/cvs/jakarta-commons-sandbox/jelly/jelly-tags/fmt/src/java/org/apache/commons/jelly/tags/fmt/SetLocaleTag.java,v
retrieving revision 1.1
retrieving revision 1.2
diff -u -r1.1 -r1.2
--- SetLocaleTag.java 16 Jan 2003 16:21:46 -0000 1.1
+++ SetLocaleTag.java 18 Jan 2003 06:25:15 -0000 1.2
@@ -1,7 +1,7 @@
/*
- * $Header$
- * $Revision$
- * $Date$
+ *
/home/cvs/jakarta-commons-sandbox/jelly/jelly-tags/fmt/src/java/org/apache/commons/jelly/tags/fmt/SetLocaleTag.java,v
1.1 2003/01/16 16:21:46 jstrachan Exp
+ * 1.1
+ * 2003/01/16 16:21:46
*
* ====================================================================
*
@@ -57,10 +57,11 @@
* information on the Apache Software Foundation, please see
* <http://www.apache.org/>.
*
- * $Id$
+ * SetLocaleTag.java,v 1.1 2003/01/16 16:21:46 jstrachan Exp
*/
package org.apache.commons.jelly.tags.fmt;
+import org.apache.commons.jelly.JellyContext;
import org.apache.commons.jelly.JellyException;
import org.apache.commons.jelly.XMLOutput;
import org.apache.commons.jelly.Tag;
@@ -79,7 +80,7 @@
public class SetLocaleTag extends TagSupport {
private static final char HYPHEN = '-';
- private static final char UNDERSCORE = '_';
+ private static final char UNDERSCORE = '_';
private Expression value;
@@ -125,7 +126,7 @@
else {
context.setVariable(Config.FMT_LOCALE, locale);
}
- //setResponseLocale(pageContext, locale);
+ //setResponseLocale(jc, locale);
}
public void setValue(Expression value) {
@@ -200,5 +201,149 @@
}
return ret;
+ }
+
+ /**
+ * Returns the locale specified by the named scoped attribute or context
+ * configuration parameter.
+ *
+ * <p> The named scoped attribute is searched in the page, request,
+ * session (if valid), and application scope(s) (in this order). If no such
+ * attribute exists in any of the scopes, the locale is taken from the
+ * named context configuration parameter.
+ *
+ * @param jc the page in which to search for the named scoped
+ * attribute or context configuration parameter
+ * @param name the name of the scoped attribute or context configuration
+ * parameter
+ *
+ * @return the locale specified by the named scoped attribute or context
+ * configuration parameter, or <tt>null</tt> if no scoped attribute or
+ * configuration parameter with the given name exists
+ */
+ static Locale getLocale(JellyContext jc, String name) {
+ Locale loc = null;
+
+ Object obj = jc.getVariable(name);
+ if (obj != null) {
+ if (obj instanceof Locale) {
+ loc = (Locale) obj;
+ } else {
+ loc = parseLocale((String) obj);
+ }
+ }
+
+ return loc;
+ }
+
+ /*
+ * Returns the formatting locale to use with the given formatting action
+ * in the given page.
+ *
+ * @param jc The context containing the formatting action
+ * @param fromTag The formatting action
+ * @param format <tt>true</tt> if the formatting action is of type
+ * <formatXXX> (as opposed to <parseXXX>), and <tt>false</tt> otherwise
+ * (if set to <tt>true</tt>, the formatting locale that is returned by
+ * this method is used to set the response locale).
+ *
+ * @param avail the array of available locales
+ *
+ * @return the formatting locale to use
+ */
+ static Locale getFormattingLocale(JellyContext jc,
+ Tag fromTag,
+ boolean format,
+ Locale[] avail) {
+
+ LocalizationContext locCtxt = null;
+
+ // Get formatting locale from enclosing <fmt:bundle>
+ Tag parent = findAncestorWithClass(fromTag, BundleTag.class);
+ if (parent != null) {
+ /*
+ * use locale from localization context established by parent
+ * <fmt:bundle> action, unless that locale is null
+ */
+ locCtxt = ((BundleTag) parent).getLocalizationContext();
+ if (locCtxt.getLocale() != null) {
+ if (format) {
+ //setResponseLocale(jc, locCtxt.getLocale());
+ }
+ return locCtxt.getLocale();
+ }
+ }
+
+ // Use locale from default I18N localization context, unless it is null
+ if ((locCtxt = BundleTag.getLocalizationContext(jc)) != null) {
+ if (locCtxt.getLocale() != null) {
+ if (format) {
+ //setResponseLocale(jc, locCtxt.getLocale());
+ }
+ return locCtxt.getLocale();
+ }
+ }
+
+ /*
+ * Establish formatting locale by comparing the preferred locales
+ * (in order of preference) against the available formatting
+ * locales, and determining the best matching locale.
+ */
+ Locale match = null;
+ Locale pref = getLocale(jc, Config.FMT_LOCALE);
+ if (pref != null) {
+ // Preferred locale is application-based
+ match = findFormattingMatch(pref, avail);
+ }
+ if (match == null) {
+ //Use fallback locale.
+ pref = getLocale(jc, Config.FMT_FALLBACK_LOCALE);
+ if (pref != null) {
+ match = findFormattingMatch(pref, avail);
+ }
+ }
+ if (format && (match != null)) {
+ //setResponseLocale(jc, match);
+ }
+
+ return match;
+ }
+
+ /*
+ * Returns the best match between the given preferred locale and the
+ * given available locales.
+ *
+ * The best match is given as the first available locale that exactly
+ * matches the given preferred locale ("exact match"). If no exact match
+ * exists, the best match is given as the first available locale that
+ * matches the preferred locale's language component and does not have any
+ * country component ("language match").
+ *
+ * @param pref the preferred locale
+ * @param avail the available formatting locales
+ *
+ * @return Available locale that best matches the given preferred locale,
+ * or <tt>null</tt> if no match exists
+ */
+ private static Locale findFormattingMatch(Locale pref, Locale[] avail) {
+ Locale match = null;
+
+ for (int i=0; i<avail.length; i++) {
+ if (pref.equals(avail[i])) {
+ // Exact match
+ match = avail[i];
+ break;
+ } else {
+ if (pref.getLanguage().equals(avail[i].getLanguage())
+ && ("".equals(avail[i].getCountry()))) {
+ // Language match
+ if (match == null) {
+ match = avail[i];
+ }
+ }
+ }
+ }
+
+ return match;
}
}
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