/// <summary>
/// <paramref name="value"/> has to contain value of <see cref="CultureInfo"/> type
/// </summary>
public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
{
string key = KeyProvider.ProvideKey(new[] { value });
var cultureInfo = value as CultureInfo;
object localizedObject = ResManager.Instance.GetResourceObject(key, cultureInfo);
return(localizedObject ?? ResExtension.GetDefaultValue(key));
}
/// <summary>
/// Returns localized string (object) by composite key.
/// Key parts are in <paramref name="values"/> except last member of array.
/// Last member is <see cref="CultureInfo"/>
/// Firstly <see cref="KeyProvider"/> makes key from it's BaseKey and key parts from <paramref name="values"/>.
/// Then localized object returned from resources depending on this key
/// </summary>
public object Convert(object[] values, Type targetType, object parameter, CultureInfo culture)
{
if (Parameters.Count + 1 != values.Length)
{
throw new ArgumentException(string.Format("ResConverter - parameters count error. Parameters.Count = {0}, values.Count = {1}", Parameters.Count, values.Length));
}
// values are the mix from ResKeyParts and ResParams. And culture in last parameter.
// Separate them as Cinderella to different heaps.
var resKeyParts = new List <object>();
var resParams = new List <object>();
for (int i = 0; i < Parameters.Count; i++)
{
object value = values[i];
BindingBase param = Parameters[i];
if (param is ResKeyPart)
{
if (value == DependencyProperty.UnsetValue && param.FallbackValue != null)
{
value = param.FallbackValue;
}
if (value != null)
{
resKeyParts.Add(value);
}
}
else if (param is ResParam)
{
resParams.Add(value);
}
}
CultureInfo cultureInfo = values[values.Length - 1] as CultureInfo;
string key = KeyProvider.ProvideKey(resKeyParts);
object localizedObject = ResManager.Instance.GetResourceObject(key, cultureInfo) ??
ResManager.Instance.GetResourceObject(ResExtension.Key, cultureInfo);
if (localizedObject == null)
{
localizedObject = ResExtension.GetDefaultValue(key);
}
else
{
try
{
if (resParams.Count > 0)
{
localizedObject = string.Format(localizedObject.ToString(), resParams.Cast <object>().ToArray());
}
}
catch (FormatException)
{
}
}
return(localizedObject);
}
public static void BindExtension(DependencyObject element, DependencyProperty property, string key, IEnumerable <ResParamBase> resParams)
{
if (element == null || property == null || key == null)
{
return;
}
var res = new ResExtension(key, string.Empty)
{
innerElement = new WeakReference(element),
innerProperty = property
};
if (resParams != null)
{
res.Parameters.AddRange(resParams);
}
element.SetValue(property, res.ProvideValue(res));
}
