/// <summary>
///
/// </summary>
/// <param name="langItem"></param>
/// <param name="cookieAlias">Cookie name used for persist Language</param>
/// <param name="switcher"></param>
internal static void SetCurrentLanguage(LanguageCultureItem langItem, string cookieAlias,
LanguageSwitcher switcher)
{
Thread.CurrentThread.CurrentUICulture = langItem.UICulture;
Thread.CurrentThread.CurrentCulture = langItem.Culture;
//Persists choice
InternalSetViewState(langItem, switcher);
InternalSetCookie(langItem, cookieAlias);
}
/// <summary>
/// Examines/combines all the variables involved and sets
/// CurrentUICulture and CurrentCulture
/// </summary>
/// <param name="langList">Languages list. Something like it=it-IT;en=en-US</param>
/// <param name="cookieAlias">Alias used to make this cookie unique. Use null is you do not want cookies.</param>
/// <param name="switcher">A referenct to a Switcher control for accessing viewstate</param>
internal static void ProcessCultures(string langList, string cookieAlias, LanguageSwitcher switcher)
{
LanguageCultureCollection myLanguagesCultureList = (LanguageCultureCollection)langList;
//Verify that at least on language is provided
if (myLanguagesCultureList.Count <= 0)
{
throw new ArgumentException("Please provide at least one language in the list.", "langList");
}
// Language Item
LanguageCultureItem langItem;
// Querystring
langItem = InternalGetQuerystring(myLanguagesCultureList);
//Trace.WriteLine("Evaluated InternalGetQuerystring: '" + (langItem == null ? "null" : langItem) + "'");
if (langItem != null)
{
goto setLanguage;
}
// Viewstate
langItem = InternalGetViewState(myLanguagesCultureList, switcher);
//Trace.WriteLine("Evaluated InternalGetViewState: '" + (langItem == null ? "null" : langItem) + "'");
if (langItem != null)
{
goto setLanguage;
}
// Cookie
langItem = InternalGetCookie(myLanguagesCultureList, cookieAlias);
//Trace.WriteLine("Evaluated InternalGetCookie: '" + (langItem == null ? "null" : langItem) + "'");
if (langItem != null)
{
goto setLanguage;
}
// UserLanguageList
langItem = InternalGetUserLanguages(myLanguagesCultureList);
//Trace.WriteLine("Evaluated InternalGetUserLanguages: '" + (langItem == null ? "null" : langItem) + "'");
if (langItem != null)
{
goto setLanguage;
}
// Default
langItem = InternalGetDefault(myLanguagesCultureList);
//Trace.WriteLine("Evaluated InternalGetDefault: '" + (langItem == null ? "null" : langItem) + "'");
setLanguage:
// Updates current cultures
SetCurrentLanguage(langItem, cookieAlias);
}
/// <summary>
/// Get current Language from ViewState
/// </summary>
/// <param name="myLanguagesCultureList"></param>
/// <returns></returns>
private static LanguageCultureItem InternalGetViewState(LanguageCultureCollection myLanguagesCultureList,
LanguageSwitcher switcher)
{
if (switcher != null && switcher.ViewState["RB_Language_CurrentUICulture"] != null &&
switcher.ViewState["RB_Language_CurrentCulture"] != null)
{
return
(new LanguageCultureItem((CultureInfo)switcher.ViewState["RB_Language_CurrentUICulture"],
(CultureInfo)switcher.ViewState["RB_Language_CurrentCulture"]));
}
else
{
return(null);
}
}
/// <summary>
/// Component is the instance of the component or control that
/// this designer object is associated with. This property is
/// inherited from System.ComponentModel.ComponentDesigner.
/// </summary>
/// <returns></returns>
public override string GetDesignTimeHtml()
{
try
{
LanguageSwitcher langSwitcher = (LanguageSwitcher)Component;
StringWriter sw = new StringWriter(CultureInfo.CurrentUICulture); //IFormatProvider should be passed
HtmlTextWriter tw = new HtmlTextWriter(sw);
langSwitcher.RenderControl(tw);
return(sw.ToString());
}
catch (Exception ex)
{
Debug.WriteLine("Exception occurred rendering Language Switcher at design time: ");
Debug.WriteLine(ex.Message);
throw;
}
}
/// <summary>
/// Get current Language from ViewState
/// </summary>
/// <param name="myLanguageCultureItem"></param>
/// <returns></returns>
private static void InternalSetViewState(LanguageCultureItem myLanguageCultureItem, LanguageSwitcher switcher)
{
if (switcher != null)
{
//Trace.WriteLine("Persisting in viewstate");
switcher.ViewState["RB_Language_CurrentUICulture"] = myLanguageCultureItem.UICulture;
switcher.ViewState["RB_Language_CurrentCulture"] = myLanguageCultureItem.Culture;
}
}
