private LocalizationContextFactoryBase FindContextFactoryFromAssembly(Assembly assembly)
{
LocalizationContextFactoryBase result = null;
var attributes = assembly.GetCustomAttributes <LocalizationContextFactoryAttribute>().ToList();
if (attributes.Count > 0)
{
if (attributes.Count > 1)
{
throw new InvalidOperationException(
$"Assembly '{assembly.FullName}' contains multiple [{nameof(LocalizationContextFactoryAttribute)}(...)] definitions. " +
"Only one attribute can be specified for assembly!");
}
var contextFactoryAttribute = attributes.First();
if (!string.IsNullOrEmpty(contextFactoryAttribute.TypeName))
{
var factoryType = Type.GetType(contextFactoryAttribute.TypeName, false);
if (factoryType == null)
{
throw new InvalidOperationException(
$"Could not found type '{contextFactoryAttribute.TypeName}' specified in '{typeof(LocalizationContextFactoryAttribute).FullName}' " +
$"in assembly '{assembly.FullName}'!");
}
try
{
var localizationContextFactory =
Activator.CreateInstance(factoryType) as LocalizationContextFactoryBase;
_contextFactoryProvider = localizationContextFactory ?? throw new InvalidOperationException(
$"Type '{factoryType.FullName}' does not implement abstract class '{TypeLocalizationContextFactory.FullName}' !");
result = localizationContextFactory;
}
catch (Exception e)
{
throw new InvalidOperationException(
$"Error creating instance of type '{factoryType.FullName}' !",
e);
}
}
}
return(result);
}
private IFormattable FindContextFromAssemblyFactory(object targetObject)
{
IFormattable result = null;
LocalizationContextFactoryBase localizationContextFactory = _contextFactoryProvider;
if (localizationContextFactory == null)
{
Type factoryType = _contextFactoryType;
if (factoryType == null && targetObject != null)
{
localizationContextFactory = FindContextFactoryFromAssembly(targetObject.GetType().Assembly);
}
if (factoryType != null && localizationContextFactory == null)
{
try
{
localizationContextFactory = Activator.CreateInstance(factoryType) as LocalizationContextFactoryBase;
_contextFactoryProvider = localizationContextFactory ?? throw new InvalidOperationException(
$"Type '{factoryType.FullName}' does not implement abstract class '{TypeLocalizationContextFactory.FullName}' !");
}
catch (Exception e)
{
throw new InvalidOperationException(
$"Error creating instance of type '{factoryType.FullName}' !",
e);
}
}
}
if (localizationContextFactory != null)
{
result = localizationContextFactory.GetSingleton();
}
return(result);
}
/// <summary>
/// Initializes localization extension with specified context factory provider.
/// </summary>
/// <param name="contextFactoryProvider">The context factory provider.</param>
public static void Initialize(LocalizationContextFactoryBase contextFactoryProvider)
{
_contextFactoryProvider = contextFactoryProvider ?? throw new ArgumentNullException(nameof(contextFactoryProvider));
}
