/// <summary>
/// Registers the known services with the ServiceLocator type.
/// </summary>
/// <param name="defaultLocator">ServiceLocator, if null, DependencyService is used.</param>
/// <param name="registerBehavior">Registration behavior</param>
/// <returns>IDependencyService</returns>
public static IDependencyService Init(IDependencyService defaultLocator, RegisterBehavior registerBehavior)
{
// If the ServiceLocator has already been set, then something used it before
// Init was called. This is not allowed if they are going to change the locator.
if (defaultLocator != null &&
serviceLocator != null)
{
throw new InvalidOperationException(
$"Must call {nameof(XamUInfrastructure.Init)} before using any library features; " +
"ServiceLocator has already been set.");
}
// Assign the locator; either use the supplied one, or the default
// DependencyService version if not supplied.
if (defaultLocator == null)
{
defaultLocator = ServiceLocator;
}
else
{
Debug.Assert(serviceLocator == null);
serviceLocator = defaultLocator;
}
// Register the services
if ((registerBehavior & RegisterBehavior.MessageVisualizer) != 0)
{
defaultLocator.Register <IMessageVisualizerService, FormsMessageVisualizerService>();
}
if ((registerBehavior & RegisterBehavior.Navigation) != 0)
{
// Use a single instance for the navigation service and
// register both interfaces against it.
var navService = new FormsNavigationPageService();
defaultLocator.Register <INavigationPageService>(navService);
defaultLocator.Register <INavigationService>(navService);
}
defaultLocator.Register <IDependencyService>(defaultLocator);
return(defaultLocator);
}
/// <summary>
/// Registers the known services with the ServiceLocator type.
/// </summary>
/// <param name="defaultLocator">ServiceLocator, if null, DependencyService is used.</param>
/// <param name="registerBehavior">Registration behavior</param>
/// <returns>IDependencyService</returns>
public static IDependencyService Init(IDependencyService defaultLocator, RegisterBehavior registerBehavior)
{
// If the ServiceLocator has already been set, then something used it before
// Init was called. This is not allowed if they are going to change the locator.
if (defaultLocator != null &&
serviceLocator != null)
{
throw new InvalidOperationException(
$"Must call {nameof(XamUInfrastructure.Init)} before using any library features; " +
"ServiceLocator has already been set.");
}
// Can call Init multiple times as long as you don't change the locator.
if (initialized)
{
Debug.Assert(serviceLocator != null);
return(ServiceLocator);
}
// Only do the remaining logic once or we get duplicate key exceptions.
initialized = true;
// Assign the locator; either use the supplied one, or the default
// DependencyService version if not supplied.
if (defaultLocator == null)
{
defaultLocator = ServiceLocator;
}
else
{
Debug.Assert(serviceLocator == null);
serviceLocator = defaultLocator;
}
// Register the services
if ((registerBehavior & RegisterBehavior.MessageVisualizer) == RegisterBehavior.MessageVisualizer)
{
try
{
defaultLocator.Register <IMessageVisualizerService, FormsMessageVisualizerService>();
}
catch (ArgumentException)
{
}
}
if ((registerBehavior & RegisterBehavior.Navigation) == RegisterBehavior.Navigation)
{
// Use a single instance for the navigation service and
// register both interfaces against it.
var navService = new FormsNavigationPageService();
try
{
defaultLocator.Register <INavigationPageService>(navService);
defaultLocator.Register <INavigationService>(navService);
}
catch (ArgumentException)
{
}
}
try
{
defaultLocator.Register <IDependencyService>(defaultLocator);
}
catch (ArgumentException)
{
}
return(defaultLocator);
}