Quick Dependency Injection

Writing a constructor for every new service gets repetitive. [Autowired] and [CheckAutowired] can generate that code for you.

Declare the class as public partial and import ShadowPluginLoader.Attributes.

Add Autowired to a property

For example, this ViewModel needs a logger:

using Serilog;
using ShadowPluginLoader.Attributes;

namespace ShadowExample.ViewModels;

public partial class StatusViewModel
{
    [Autowired]
    public ILogger Logger { get; }

    partial void ConstructorInit()
    {
        Logger.Information("StatusViewModel initialized");
    }
}

The build generates a constructor like this:

public StatusViewModel(ILogger logger)
{
    Logger = logger;
    ConstructorInit();
}

After assigning Logger, it calls ConstructorInit(). Put any extra setup there instead of writing another constructor.

What if the base class needs parameters too?

Add [CheckAutowired] to the derived class. The generator will pass along the parameters its base class needs. For the earlier main plugin class, the constructor looks like this:

public EmojiPlugin(ExampleMetaData meta, ILogger logger,
    PluginEventService pluginEventService)
    : base(meta, logger, pluginEventService)
{
    ConstructorInit();
}

This code is generated for you. You don't need to paste it into the plugin class.

Register your services

DryIoc still needs to know where each service comes from. Register your own services first with methods such as DiFactory.Services.Register<TService, TImplementation>().

The loader registers plugin main classes and supported configuration classes for you.

Controls can receive dependencies this way too. Put this.LoadComponent(ref _contentLoaded) in ConstructorInit() to load XAML once the dependencies are ready; see Custom Controls.