/// <summary>
/// This method tries to find the assembly of resources and the strongly
/// typed Resource class in a project so the designer works properly.
///
/// It's recommended your application ALWAYS explicitly initializes the
/// DefaultResourceAssembly and DefaultResourceManager in LocalizationSettings.
///
/// When running in the designer this code tries to find
/// </summary>
/// <returns></returns>
internal bool FindDefaultResourceAssembly()
{
Assembly asm = null;
if (this.Assembly != null)
{
asm = LocalizationSettings.AssemblyList[this.Assembly] as Assembly;
if (asm == null)
{
asm = LocalizationSettings.AddAssembly(this.Assembly);
}
return(true);
}
try
{
if (DesignerProperties.GetIsInDesignMode(new DependencyObject()))
{
// in designer find the Windows.Application instance
// NOTE: will not work in control projects but better than nothing
asm = (
from a in AppDomain.CurrentDomain.GetAssemblies()
where a.EntryPoint != null &&
a.GetTypes().Any(t => t.IsSubclassOf(typeof(System.Windows.Application)))
select a
).FirstOrDefault();
}
else
{
// Do Private reflection on FrameworkElement
FrameworkElement element = _targetObject as FrameworkElement;
if (element != null)
{
object root = element.GetType().GetProperty("InheritanceParent", BindingFlags.Instance | BindingFlags.NonPublic).GetValue(element, null);
asm = root.GetType().Assembly;
}
}
}
catch
{ /* eat any exceptions here; */ }
// Assume the Document we're called is in the same assembly as resources
if (asm == null)
{
asm = System.Reflection.Assembly.GetExecutingAssembly();
}
// Search for Properties.Resources in the Exported Types (has to be public!)
Type ResType = asm.GetExportedTypes().Where(type => type.FullName.Contains(".Properties.Resources")).FirstOrDefault();
if (ResType == null)
{
return(false);
}
ResourceManager resMan = ResType.GetProperty("ResourceManager").GetValue(ResType, null) as ResourceManager;
LocalizationSettings.Current.DefaultResourceAssembly = asm;
LocalizationSettings.Current.DefaultResourceManager = resMan;
return(true);
}
/// <summary>
/// Internal value retrieval
/// </summary>
/// <returns></returns>
private object ProvideValueInternal()
{
object localized = null;
if (Static == null)
{
// Get a cached resource manager for this resource set
ResourceManager resMan = LocalizationSettings.GetResourceManager(this.ResourceSet, this.Assembly);
// Get the localized value
if (resMan != null)
{
try
{
localized = resMan.GetObject(this.Id);
}
catch { /* eat exception here so we can still display default value */ }
}
}
else
{
try
{
// Parse Static=properties:Resources.HelloWorld like static resource
int index = this.Static.IndexOf('.');
if (index == -1)
{
throw new ArgumentException(Resources.InvalidStaticBindingSyntax + ": "
+ this.Static);
}
if (this._propertyInfo == null)
{
// resolve properties:Resources
string typeName = this.Static.Substring(0, index);
IXamlTypeResolver service = _serviceProvider.GetService(typeof(IXamlTypeResolver))
as IXamlTypeResolver;
Type memberType = service.Resolve(typeName);
string propName = this.Static.Substring(index + 1);
this._propertyInfo = memberType.GetProperty(propName,
BindingFlags.Public | BindingFlags.Static |
BindingFlags.FlattenHierarchy);
}
localized = _propertyInfo.GetValue(null, null);
}
catch
{
// in Blend this will always fail and fall through to use the Default
// values
// Since this is a static property lets throw here
//This way you'll see it - in the designer as an error.
//throw new ArgumentException(Resources.InvalidStaticBindingSyntax + ": " +
// this.Static + "\r\n" + ex.Message);
}
}
// If the value is null, use the Default value if available
if (localized == null && this.Default != null)
{
localized = this.Default;
}
// fail type conversions silently and write to trace output
try
{
// Convert if a type converter is availalbe
if (localized != null &&
this.Converter == null &&
_typeConverter != null &&
_typeConverter.CanConvertFrom(localized.GetType()))
{
localized = _typeConverter.ConvertFrom(localized);
}
// Apply a type converter if one was specified
if (Converter != null)
{
localized = this.Converter.Convert(localized, _targetProperty.PropertyType,
null, CultureInfo.CurrentCulture);
}
}
catch (Exception ex)
{
Trace.WriteLine(string.Format(Resources.ConversionErrorMessageFormatString,
Id, ex.Message));
//Trace.WriteLine(string.Format("ResExtension Type conversion failed. Id: {0},
// Error: {1}", Id, ex.Message));
localized = null;
}
// If no fallback value is available, return the key
if (localized == null)
{
if (_targetProperty != null &&
_targetProperty.PropertyType == typeof(string))
{
// Return the key surrounded by question marks for string type properties
localized = string.Concat("?", Id, "?");
}
else
{
// Return the UnsetValue for all other types of dependency properties
return(DependencyProperty.UnsetValue);
}
}
// Format if a format string was provided
if (this.Format != null)
{
localized = string.Format(CultureInfo.CurrentUICulture,
this.Format, localized);
}
return(localized);
}
