User options to change UI language as well as content filter language.

Some small rationalizing of common code for above.


git-svn-id: https://svn.alfresco.com/repos/alfresco-enterprise/alfresco/HEAD/root@4754 c4b6b30b-aa2e-2d43-bbcb-ca4b014f7261

source/java/org/alfresco/web/bean/UserPreferencesBean.java

@@ -16,13 +16,20 @@
  */
 package org.alfresco.web.bean;
 
+import java.util.ArrayList;
+import java.util.List;
+import java.util.Locale;
 import java.util.ResourceBundle;
 
 import javax.faces.context.FacesContext;
 import javax.faces.model.SelectItem;
 
+import org.alfresco.config.Config;
+import org.alfresco.error.AlfrescoRuntimeException;
+import org.alfresco.i18n.I18NUtil;
 import org.alfresco.web.app.Application;
 import org.alfresco.web.bean.repository.PreferencesService;
+import org.alfresco.web.config.LanguagesConfigElement;
 
 /**
  * Simple bean backing the user preferences settings.
@@ -37,6 +44,131 @@ public class UserPreferencesBean
    private static final String MSG_COMPANYHOME = "company_home";
    private static final String MSG_GUESTHOME = "guest_home";
    
+   private static final String PREF_CONTENTFILTERLANGUAGE = "content-filter-language";
+   private static final String MSG_CONTENTALLLANGUAGES = "content_all_languages";
+
+   /** language locale selection */
+   private String language = null;
+   
+   /** content language locale selection */
+   private String contentFilterLanguage = null;
+   
+   private SelectItem[] getLanguageItems(boolean includeAllLanguages)
+   {
+       Config config = Application.getConfigService(FacesContext.getCurrentInstance()).getConfig("Languages");
+       LanguagesConfigElement langConfig = (LanguagesConfigElement)config.getConfigElement(
+             LanguagesConfigElement.CONFIG_ELEMENT_ID);
+       
+       List<String> languages = langConfig.getLanguages();
+       List<SelectItem> items = new ArrayList<SelectItem>(20);
+       if (includeAllLanguages)
+       {
+           ResourceBundle msg = Application.getBundle(FacesContext.getCurrentInstance());
+           String allLanguagesStr = msg.getString(MSG_CONTENTALLLANGUAGES);
+           items.add(new SelectItem(MSG_CONTENTALLLANGUAGES, allLanguagesStr));
+       }
+       for (String locale : languages)
+       {
+          // get label associated to the locale
+          String label = langConfig.getLabelForLanguage(locale);
+          items.add(new SelectItem(locale, label));
+       }
+       
+       SelectItem[] result = new SelectItem[items.size()];
+       return items.toArray(result);
+   }
+
+   /**
+    * @return the available languages
+    */
+   public SelectItem[] getLanguages()
+   {
+       // Get the item selection list
+       SelectItem[] items = getLanguageItems(false);
+       // Change the current language
+       if (this.language == null)
+       {
+           // first try to get the language that the current user is using
+           Locale lastLocale = Application.getLanguage(FacesContext.getCurrentInstance());
+           if (lastLocale != null)
+           {
+              this.language = lastLocale.toString();
+           }
+           // else we default to the first item in the list
+           else if (items.length > 0)
+           {
+              this.language = (String) items[0].getValue();
+           }
+           else
+           {
+               throw new AlfrescoRuntimeException("The language list is empty");
+           }
+       }
+       return items;
+   }
+
+   /**
+    * @return Returns the language selection.
+    */
+   public String getLanguage()
+   {
+      return this.language;
+   }
+
+   /**
+    * @param language       The language selection to set.
+    */
+   public void setLanguage(String language)
+   {
+      this.language = language;
+      Application.setLanguage(FacesContext.getCurrentInstance(), this.language);
+   }
+   
+   public String getContentFilterLanguage()
+   {
+      if (this.contentFilterLanguage == null)
+      {
+          Locale locale = (Locale) PreferencesService.getPreferences().getValue(PREF_CONTENTFILTERLANGUAGE);
+          // Null means All Languages
+          if (locale == null)
+          {
+              this.contentFilterLanguage = MSG_CONTENTALLLANGUAGES;
+          }
+          else
+          {
+              this.contentFilterLanguage = locale.toString();
+          }
+      }
+      return contentFilterLanguage;
+   }
+   
+   /**
+    * @param languageStr A valid locale string or {@link #MSG_CONTENTALLLANGUAGES}
+    */
+   public void setContentFilterLanguage(String languageStr)
+   {
+       this.contentFilterLanguage = languageStr;
+       Locale language = null;
+       if (languageStr.equals(MSG_CONTENTALLLANGUAGES))
+       {
+           // The generic "All Languages" was selected - persist this as a null
+       }
+       else
+       {
+           // It should be a proper locale string
+           language = I18NUtil.parseLocale(languageStr);
+       }
+       PreferencesService.getPreferences().setValue(PREF_CONTENTFILTERLANGUAGE, language);
+   }
+   
+   public SelectItem[] getContentFilterLanguages()
+   {
+       // Get the item selection list
+       SelectItem[] items = getLanguageItems(true);
+
+       return items;
+   }
+   
    
    public String getStartLocation()
    {