private IPresentable CreatePresentable(IPresentable parent, Type controllerType, PresentOptions presentOptions, PresentArgs args)
{
Debug.Assert(controllerType != null);
Debug.Assert(!_disposed);
var resultType = typeof(int);
var attrs = (ViewControllerAttribute[])controllerType.GetCustomAttributes(typeof(ViewControllerAttribute), false);
var presentContext = new PresentResultArgs()
{
Id = ++_idCounter,
ServiceProvider = _serviceProvider,
ControllerFactory = _controllerFactory,
ViewFactory = _viewFactory,
ControllerType = controllerType,
Parent = parent,
PresentOptions = presentOptions,
PresentArgs = args ?? PresentArgs.Default
};
if (attrs != null && attrs.Length > 0)
{
var controllerAttr = attrs[0];
presentContext.PresentOptions |= controllerAttr.PresentOptions;
presentContext.Layer = controllerAttr.Layer;
presentContext.Tag = controllerAttr.Tag;
presentContext.PrefabPath = controllerAttr.PrefabPath;
}
// Types inherited from IViewControllerResult<> use specific result values.
if (IsAssignableToGenericType(controllerType, typeof(IViewControllerResult<>), out var t))
{
resultType = t.GenericTypeArguments[0];
}
// If parent is going to be dismissed, use its parent instead.
if ((presentOptions & PresentOptions.Child) == 0)
{
presentContext.Parent = null;
}
else if ((presentOptions & PresentOptions.DismissAll) != 0)
{
presentContext.Parent = null;
}
else if ((presentOptions & PresentOptions.DismissCurrent) != 0)
{
presentContext.Parent = parent?.Parent;
}
// Instantiate the presentable.
// https://docs.microsoft.com/en-us/dotnet/framework/reflection-and-codedom/how-to-examine-and-instantiate-generic-types-with-reflection
var presentResultType = typeof(PresentResult<,>).MakeGenericType(controllerType, resultType);
var c = (IPresentable)Activator.CreateInstance(presentResultType, this, presentContext);
AddPresentable(c);
return c;
}
public PresentResult(IPresenterInternal presenter, PresentResultArgs context)
{
Debug.Assert(presenter != null);
Debug.Assert(context != null);
_presenter = presenter;
_id = context.Id;
_tag = context.Tag;
_layer = context.Layer;
_parent = context.Parent;
_serviceProvider = context.ServiceProvider;
_controllerFactory = context.ControllerFactory;
_controllerType = context.ControllerType;
_presentArgs = context.PresentArgs;
_presentOptions = context.PresentOptions;
_deeplinkId = GetDeeplinkId(_controllerType);
_prefabPath = string.IsNullOrEmpty(context.PrefabPath) ? GetDefaultPrefabName(_controllerType) : context.PrefabPath;
}