public void DualContainers()
{
var container1 = new CompositionContainer();
TypeDescriptorServices dat1 = new TypeDescriptorServices();
CompositionBatch batch = new CompositionBatch();
batch.AddPart(dat1);
container1.Compose(batch);
MetadataStore.AddAttribute(
typeof(DynamicMetadataTestClass),
(type, attributes) =>
Enumerable.Concat(
attributes,
new Attribute[] { new TypeConverterAttribute(typeof(DynamicMetadataTestClassConverter)) }
),
container1
);
var container2 = new CompositionContainer();
CompositionBatch batch2 = new CompositionBatch();
TypeDescriptorServices dat2 = new TypeDescriptorServices();
batch2.AddPart(dat2);
container2.Compose(batch2);
DynamicMetadataTestClass val = DynamicMetadataTestClass.Get("42");
var attached1 = dat1.GetConverter(val.GetType());
Assert.True(attached1.CanConvertFrom(typeof(string)), "The new type converter for DynamicMetadataTestClass should support round tripping");
var attached2 = dat2.GetConverter(val.GetType());
Assert.False(attached2.CanConvertFrom(typeof(string)), "The default type converter for DynamicMetadataTestClass shouldn't support round tripping");
}
public void DualContainers()
{
var container1 = new CompositionContainer();
TypeDescriptorServices dat1 = new TypeDescriptorServices();
CompositionBatch batch = new CompositionBatch();
batch.AddPart(dat1);
container1.Compose(batch);
MetadataStore.AddAttribute(
typeof(DynamicMetadataTestClass),
( type, attributes) =>
Enumerable.Concat(
attributes,
new Attribute[] { new TypeConverterAttribute(typeof(DynamicMetadataTestClassConverter)) }
),
container1
);
var container2 = new CompositionContainer();
CompositionBatch batch2 = new CompositionBatch();
TypeDescriptorServices dat2 = new TypeDescriptorServices();
batch2.AddPart(dat2);
container2.Compose(batch2);
DynamicMetadataTestClass val = DynamicMetadataTestClass.Get("42");
var attached1 = dat1.GetConverter(val.GetType());
Assert.IsTrue(attached1.CanConvertFrom(typeof(string)), "The new type converter for DynamicMetadataTestClass should support round tripping");
var attached2 = dat2.GetConverter(val.GetType());
Assert.IsFalse(attached2.CanConvertFrom(typeof(string)), "The default type converter for DynamicMetadataTestClass shouldn't support round tripping");
}
public static TypeDescriptorServices GetTypeDescriptorServicesForContainer(CompositionContainer container)
{
if (container != null)
{
var result = container.GetExportedValueOrDefault <TypeDescriptorServices>();
if (result == null)
{
var v = new TypeDescriptorServices();
CompositionBatch batch = new CompositionBatch();
batch.AddPart(v);
container.Compose(batch);
return(v);
}
return(result);
}
return(null);
}
internal static Dictionary <Type, TypeDescriptionProvider> GetRedirect(CompositionContainer container)
{
TypeDescriptorServices v = GetTypeDescriptorServicesForContainer(container);
return(v != null ? v.Providers : null);
}
public static TypeDescriptorServices GetTypeDescriptorServicesForContainer(CompositionContainer container)
{
if (container != null)
{
var result = container.GetExportedValueOrDefault<TypeDescriptorServices>();
if (result == null)
{
var v = new TypeDescriptorServices();
CompositionBatch batch = new CompositionBatch();
batch.AddPart(v);
container.Compose(batch);
return v;
}
return result;
}
return null;
}
