X-Git-Url: http://www2.svjatoslav.eu/gitweb/?a=blobdiff_plain;f=src%2Fmain%2Fjava%2Feu%2Fsvjatoslav%2Fcommons%2Fnetwork%2FLocaleConfiguration.java;fp=src%2Fmain%2Fjava%2Feu%2Fsvjatoslav%2Fcommons%2Fnetwork%2FLocaleConfiguration.java;h=2230885078fcc3ae95bf09d1bac0bf93d558e699;hb=869bf9eeef97f5364d46b76f64c94cec67846c28;hp=0000000000000000000000000000000000000000;hpb=aa03fa52face6f13f8da2e9b89e798671653a074;p=svjatoslav_commons.git

diff --git a/src/main/java/eu/svjatoslav/commons/network/LocaleConfiguration.java b/src/main/java/eu/svjatoslav/commons/network/LocaleConfiguration.java
new file mode 100755
index 0000000..2230885
--- /dev/null
+++ b/src/main/java/eu/svjatoslav/commons/network/LocaleConfiguration.java
@@ -0,0 +1,63 @@
+/*
+ * Svjatoslav Commons - shared library of common functionality.
+ * Copyright ©2012-2014, Svjatoslav Agejenko, svjatoslav@svjatoslav.eu
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of version 3 of the GNU Lesser General Public License
+ * or later as published by the Free Software Foundation.
+ */
+
+package eu.svjatoslav.commons.network;
+
+import java.util.ArrayList;
+import java.util.List;
+
+import javax.servlet.http.HttpServletRequest;
+
+public class LocaleConfiguration {
+
+	Locale defaultLocale;
+
+	private final List<Locale> allowedLocales = new ArrayList<Locale>();
+
+	public LocaleConfiguration(final Locale defaultLocale,
+			final Locale... allowedLocales) {
+
+		this.defaultLocale = defaultLocale;
+
+		for (final Locale locale : allowedLocales)
+			this.getAllowedLocales().add(locale);
+	}
+
+	public Locale detectCurrentLocale(final HttpServletRequest request) {
+
+		final String sessionLocaleString = (String) request.getSession()
+				.getAttribute("locale");
+
+		Locale result = localeFromString(sessionLocaleString);
+		if (result == null)
+			result = defaultLocale;
+
+		final Locale requestLocale = localeFromString(request
+				.getParameter("locale"));
+		if (requestLocale != null)
+			result = requestLocale;
+
+		request.getSession().setAttribute("locale", result.asString());
+
+		return result;
+	}
+
+	private Locale localeFromString(final String localeString) {
+		for (final Locale locale : getAllowedLocales())
+			if (locale.asString().equals(localeString))
+				return locale;
+
+		return null;
+	}
+
+	public List<Locale> getAllowedLocales() {
+		return allowedLocales;
+	}
+
+}