Exemple #1
0
        /// <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);
        }