110 lines
4 KiB
C#
110 lines
4 KiB
C#
#region Apache License 2.0
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/*
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Nuclex Foundation libraries for .NET
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Copyright (C) 2002-2025 Markus Ewald / Nuclex Development Labs
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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#endregion // Apache License 2.0
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using System;
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using Microsoft.Extensions.DependencyInjection;
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using Nuclex.Avalonia.AutoBinding;
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namespace Nuclex.Avalonia.DependencyInjection {
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/// <summary>
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/// Window manager that is using Microsoft's dependency injection interfaces
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/// </summary>
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public class DependencyInjectedWindowManager : WindowManager {
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#region class WindowScope
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/// <summary>Manages a window-specific service scope</summary>
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private class WindowScope : IWindowScope, IDisposable {
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/// <summary>Initializes a new service scope for the window</summary>
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/// <param name="serviceProvider">
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/// Service provider in which to create a scope
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/// </param>
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public WindowScope(IServiceProvider serviceProvider) {
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this.serviceScope = serviceProvider.CreateScope();
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}
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/// <summary>Creates an instance of the specified type in the scope</summary>
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/// <param name="type">Type an instance will be created of</param>
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/// <returns>The created instance</returns>
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/// <remarks>
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/// Use this to wire up your dependency injection container. By default,
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/// the Activator class will be used to create instances which only works
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/// if all of your view models are concrete classes.
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/// </remarks>
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public object CreateInstance(Type type) {
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return this.serviceScope.ServiceProvider.GetRequiredService(type);
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}
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/// <summary>Immediately destroys all services owned by the scope</summary>
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public void Dispose() {
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if(this.serviceScope != null) {
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this.serviceScope.Dispose();
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this.serviceScope = null;
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}
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}
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/// <summary>Service scope that will be used to create instances</summary>
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private IServiceScope serviceScope;
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}
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#endregion // class WindowScope
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/// <summary>Initializes a new window manager</summary>
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/// <param name="serviceProvider">
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/// Dependency injector the window manager uses to construct view models
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/// </param>
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/// <param name="autoBinder">
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/// View model binder that will be used to bind all created views to their models
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/// </param>
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public DependencyInjectedWindowManager(
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IServiceProvider serviceProvider, IAutoBinder autoBinder = null
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) :
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base(autoBinder) {
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this.serviceProvider = serviceProvider;
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}
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/// <summary>Creates an instance of the specified type</summary>
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/// <param name="type">Type an instance will be created of</param>
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/// <returns>The created instance</returns>
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/// <remarks>
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/// Use this to wire up your dependency injection container. By default,
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/// the Activator class will be used to create instances which only works
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/// if all of your view models are concrete classes.
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/// </remarks>
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protected override object CreateInstance(Type type) {
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return this.serviceProvider.GetRequiredService(type);
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}
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/// <summary>Creates a new scope in which window-specific services will live</summary>
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/// <returns>The new scope managing the lifetime of window-specific services</returns>
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protected override IWindowScope CreateWindowScope() {
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return new WindowScope(this.serviceProvider);
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}
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/// <summary>The service provider used to create new instances</summary>
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private readonly IServiceProvider serviceProvider;
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}
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} // namespace Nuclex.Avalonia.DependencyInjection
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