/// <summary>
/// Retrieves a new instance of the type stored in the given <see cref="ActivationParams"/>.
/// </summary>
/// <param name="parameters">The parameters that describe the type that should be instantiated.</param>
/// <returns>Returns the new object.</returns>
public static object CreateObject(ActivationParams parameters)
{
var obj = Locator.Current.GetService(parameters.Type);
if (obj == null)
{
throw new InvalidOperationException($"Could not resolve an object of type: {parameters.Type} because Locator.Current.GetService({parameters.Type}) returned null. Make sure you have registered a factory for the type using Locator.CurrentMutable.Register(factory, {parameters.Type})");
}
return(obj);
}
private async Task <Transition> BuildViewModelAsync(ActivationParams activationParams)
{
var vm = await ActivationHelpers.CreateAndInitObjectAsync(activationParams);
var transition = new Transition()
{
ViewModel = vm
};
return(transition);
}
/// <summary>
/// Instantiates and initializes the object described by the given <see cref="ActivationParams"/>.
/// </summary>
/// <param name="parameters">The parameters that should be used to initialize the object.</param>
/// <returns>Returns the created object.</returns>
public static async Task <object> CreateAndInitObjectAsync(ActivationParams parameters)
{
if (parameters == null)
{
throw new ArgumentNullException(nameof(parameters));
}
var obj = CreateObject(parameters);
await InitObjectAsync(obj, parameters.Params);
return(obj);
}
/// <summary>
/// Instantiates and initializes the object described by the given <see cref="ActivationParams"/>.
/// </summary>
/// <param name="parameters">The parameters that should be used to initialize the object.</param>
/// <returns>Returns the created object.</returns>
public static async Task <T> CreateAndInitObjectAsync <T, TParams>(TParams parameters)
where T : IActivatable <TParams>
where TParams : new()
{
if (parameters == null)
{
throw new ArgumentNullException(nameof(parameters));
}
var activationParams = new ActivationParams()
{
Type = typeof(T),
Params = parameters
};
return((T) await CreateAndInitObjectAsync(activationParams));
}
