Split CMS and CMS UI

[lgpl/argeo-commons.git] / org.argeo.cms.ui / src / org / argeo / cms / widgets / auth / LocaleChoice.java

diff --git a/org.argeo.cms.ui/src/org/argeo/cms/widgets/auth/LocaleChoice.java b/org.argeo.cms.ui/src/org/argeo/cms/widgets/auth/LocaleChoice.java
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+/*
+ * Copyright (C) 2007-2012 Argeo GmbH
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *         http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.argeo.cms.widgets.auth;
+
+import java.util.Collections;
+import java.util.List;
+import java.util.Locale;
+
+import javax.security.auth.callback.LanguageCallback;
+
+import org.argeo.cms.CmsException;
+import org.argeo.cms.i18n.LocaleUtils;
+
+/** Choose in a list of locales. TODO: replace with {@link LanguageCallback} */
+public class LocaleChoice {
+       private final List<Locale> locales;
+
+       private Integer selectedIndex = null;
+       private final Integer defaultIndex;
+
+       public LocaleChoice(List<Locale> locales, Locale defaultLocale) {
+               Integer defaultIndex = null;
+               this.locales = Collections.unmodifiableList(locales);
+               for (int i = 0; i < locales.size(); i++)
+                       if (locales.get(i).equals(defaultLocale))
+                               defaultIndex = i;
+
+               // based on language only
+               if (defaultIndex == null)
+                       for (int i = 0; i < locales.size(); i++)
+                               if (locales.get(i).getLanguage().equals(defaultLocale.getLanguage()))
+                                       defaultIndex = i;
+
+               if (defaultIndex == null)
+                       throw new CmsException("Default locale " + defaultLocale + " is not in available locales " + locales);
+               this.defaultIndex = defaultIndex;
+
+               this.selectedIndex = defaultIndex;
+       }
+
+       /**
+        * Convenience constructor based on a comma separated list of iso codes (en,
+        * en_US, fr_CA, etc.). Default selection is default locale.
+        */
+       public LocaleChoice(String locales, Locale defaultLocale) {
+               this(LocaleUtils.asLocaleList(locales), defaultLocale);
+       }
+
+       public String[] getSupportedLocalesLabels() {
+               String[] labels = new String[locales.size()];
+               for (int i = 0; i < locales.size(); i++) {
+                       Locale locale = locales.get(i);
+                       if (locale.getCountry().equals(""))
+                               labels[i] = locale.getDisplayLanguage(locale) + " [" + locale.getLanguage() + "]";
+                       else
+                               labels[i] = locale.getDisplayLanguage(locale) + " (" + locale.getDisplayCountry(locale) + ") ["
+                                               + locale.getLanguage() + "_" + locale.getCountry() + "]";
+
+               }
+               return labels;
+       }
+
+       public Locale getSelectedLocale() {
+               if (selectedIndex == null)
+                       return null;
+               return locales.get(selectedIndex);
+       }
+
+       public void setSelectedIndex(Integer selectedIndex) {
+               this.selectedIndex = selectedIndex;
+       }
+
+       public Integer getSelectedIndex() {
+               return selectedIndex;
+       }
+
+       public Integer getDefaultIndex() {
+               return defaultIndex;
+       }
+
+       public List<Locale> getLocales() {
+               return locales;
+       }
+
+       public Locale getDefaultLocale() {
+               return locales.get(getDefaultIndex());
+       }
+}