/// <summary>
/// Checks whether a localized file for the given resource type is
/// available. Caches the result for the current culture as the
/// operation relies on expensive reflections.
/// </summary>
/// <param name="type">The type to check for a localized copy.</param>
/// <returns>True if a localized version of the associated resource file exists.</returns>
private static bool IsResourceTypeLocalized(L10nResourceType type)
{
int index = (int)type;
// We cache the result to improve the overall performance.
if (!_isLocalized[index].HasValue)
{
// For the default language all strings should be available
if (IsDefaultLanguage)
{
_isLocalized[index] = true;
return true;
}
// Try to load the satelite assembly for the current culture and
// check if a resource file for the current culture is embedded.
Assembly satellite = null;
if (_currentAssembly.TryGetSatelliteAssembly(_uiCulture, out satellite))
{
string resourceBaseName = _l10nResources[index].BaseName;
_isLocalized[index] = satellite.ContainsResource(resourceBaseName, _uiCulture);
}
else
{
_isLocalized[index] = false;
}
}
return _isLocalized[index].Value;
}
/// <summary>
/// Tries to retrieve a translated string with respect the currently active
/// application language.
/// </summary>
/// <param name="key">The unique identifier of the string to lookup.</param>
/// <param name="type">The resource file to use for the lookup process.</param>
/// <returns>The translated string, or null if no tranlation available.</returns>
public static string LookUpLocalizedString(string key, L10nResourceType type)
{
// Handle: No key value given
if (string.IsNullOrWhiteSpace(key))
return string.Empty;
ResourceManager resx = _l10nResources[(int)type];
string value = string.Empty;
if (resx != null)
value = resx.GetString(key, _uiCulture);
return !string.IsNullOrWhiteSpace(value) ? value : null;
}
