private async Task <object> CreateInstanceAsync(Type interfaceType, ComponentDescriptor componentDescriptor, Action <string> progressCallback, ComponentDescriptor[] resolveStack)
{
ComponentDescriptor[] ResolveStack = this.CheckPreventRecursion(resolveStack, componentDescriptor);
ComponentInstance ComponentInstance = this.instances[componentDescriptor];
Func <Func <Task <object> >, Task <object> > RunCreate = componentDescriptor.MustCreateOnUiThread ? this.Repository.RunOnUiThread : Task.Run;
object Instance = await RunCreate(async() => await ComponentInstance.CreateInstanceAsync(interfaceType, this, progressCallback, ResolveStack));
return(Instance);
}
internal ComponentDescriptor(ComponentRepository componentRepository, Type type, object config, ComponentRepository privateRepository)
{
this.Repository = componentRepository;
this.Type = type;
this.Name = ComponentDescriptor.GetComponentName(type);
this.Config = config;
this.ConfigType = config?.GetType();
this.PrivateRepository = privateRepository;
this.MustCreateOnUiThread = ComponentDescriptor.GetComponentUiThreadAffinity(type, this.Repository);
}
private object CreateInstance(Type interfaceType, ComponentDescriptor componentDescriptor, Action <string> progressCallback, ComponentDescriptor[] resolveStack)
{
ComponentDescriptor[] ResolveStack = this.CheckPreventRecursion(resolveStack, componentDescriptor);
ComponentInstance ComponentInstance = this.instances[componentDescriptor];
if (componentDescriptor.MustCreateOnUiThread && this.Repository.IsUiThread() == false)
{
throw new ArgumentException(@"Attempting to synchronously create a compontent instance that needs to be created on the UI thread from a non-ui thread.\nEither marshal the creation to the UI Thread, or use the async creation method that implicitly marshals if needed");
}
object Instance = ComponentInstance.CreateInstance(interfaceType, this, progressCallback, ResolveStack);
return(Instance);
}
public ComponentInstance this[ComponentDescriptor componentDescriptor]
{
get
{
foreach (ComponentInstance ComponentInstance in this.innerList)
{
if (ComponentInstance.Descriptor == componentDescriptor)
{
return(ComponentInstance);
}
}
ComponentInstance NewComponentInstance = componentDescriptor.CreateComponentInstance();
this.innerList.Add(NewComponentInstance);
this.InvokeComponentInstanceAdded(NewComponentInstance);
return(NewComponentInstance);
}
}
internal SharedComponentInstance(ComponentDescriptor componentDescriptor)
: base(componentDescriptor)
{
}
internal SingletonComponentInstance(ComponentDescriptor componentDescriptor)
: base(componentDescriptor)
{
}
private ComponentDescriptor[] CheckPreventRecursion(ComponentDescriptor[] resolveStack, ComponentDescriptor descriptor)
{
if (resolveStack.Contains(descriptor))
{
string Message = $"Recursion during creation of component '{descriptor.Name}':\n{string.Join(" -> ", resolveStack.Reverse().ConvertTo(value => value.ToString()).ToArray())}";
throw new InvalidOperationException(Message);
}
else
{
return(resolveStack.Union(new[] { descriptor }).ToArray());
}
}
internal SimpleComponentInstance(ComponentDescriptor componentDescriptor)
: base(componentDescriptor)
{
}
internal ComponentInstance(ComponentDescriptor componentDescriptor)
{
this.Descriptor = componentDescriptor;
}