public Export GetServiceByContract(Type serviceType)
{
if (_container == null)
{
// try getting the container again
_container = LocatorBootstrapper.EnsureLocatorBootstrapper();
}
var serviceTypeIdentity = AttributedModelServices.GetTypeIdentity(serviceType);
var requiredMetadata = new Dictionary <string, Type>();
requiredMetadata[ExportService.IsDesignTimeServiceProperty] = typeof(ServiceType);
requiredMetadata[ExportService.ServiceContractProperty] = typeof(Type);
var definition = new ContractBasedImportDefinition(serviceTypeIdentity, serviceTypeIdentity,
requiredMetadata, ImportCardinality.ZeroOrMore, false,
false, CreationPolicy.NonShared);
var vmExport = _container.GetExports(definition).FirstOrDefault();
if (vmExport != null)
{
return(vmExport);
}
return(null);
}
/// <summary>
/// Gets teh ViewModel export
/// </summary>
/// <param name="vmContractName">The contract for the view model to get</param>
/// <returns></returns>
public Export GetViewModelByContract(string vmContractName)
{
if (_container == null)
{
// try getting the container again
_container = LocatorBootstrapper.EnsureLocatorBootstrapper();
}
var viewModelTypeIdentity = AttributedModelServices.GetTypeIdentity(typeof(object));
var requiredMetadata = new Dictionary <string, Type>();
requiredMetadata[ExportViewModel.NameProperty] = typeof(string);
requiredMetadata[ExportViewModel.ContextAwareServicesProperty] = typeof(IEnumerable <Type>);
requiredMetadata[ExportViewModel.IsDataContextAwareProperty] = typeof(bool);
var definition = new ContractBasedImportDefinition(ExportViewModel.Contract, viewModelTypeIdentity,
requiredMetadata, ImportCardinality.ZeroOrMore, false,
false, CreationPolicy.NonShared);
var vmExports = _container.GetExports(definition);
var vmExport = vmExports.Single(e => e.Metadata[ExportViewModel.NameProperty].Equals(vmContractName));
if (vmExport != null)
{
return(vmExport);
}
return(null);
}
//tries to satisfy the imports
private void TrySatisyImports()
{
try
{
var tempContainer = LocatorBootstrapper.EnsureLocatorBootstrapper();
if (tempContainer != null)
{
_container = tempContainer;
Debug.WriteLine("MEFedMVVM Composition Container is changing.");
}
resolver = new MEFedMVVMResolver(_container);
basicVMInitializer = new BasicViewModelInitializer(Resolver);
dataContextAwareVMInitializer = new DataContextAwareViewModelInitializer(Resolver);
}
catch (Exception ex)
{
Debug.WriteLine("MEFEdMVVM: ViewModelRepoistory. Unable to satisfy imports. " + ex);
}
}
