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MvxApplication.cs
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MvxApplication.cs
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// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MS-PL license.
// See the LICENSE file in the project root for more information.
using System;
using System.Collections.Generic;
using System.Reflection;
using System.Threading.Tasks;
using Microsoft.Extensions.Logging;
using MvvmCross.IoC;
using MvvmCross.Logging;
using MvvmCross.Plugin;
namespace MvvmCross.ViewModels
{
#nullable enable
public abstract class MvxApplication : IMvxApplication
{
private IMvxViewModelLocator? _defaultLocator;
private IMvxViewModelLocator DefaultLocator
{
get
{
_defaultLocator ??= CreateDefaultViewModelLocator();
return _defaultLocator;
}
}
protected virtual IMvxViewModelLocator CreateDefaultViewModelLocator()
{
return new MvxDefaultViewModelLocator();
}
public virtual void LoadPlugins(IMvxPluginManager pluginManager)
{
// do nothing
}
/// <summary>
/// Any initialization steps that can be done in the background
/// </summary>
public virtual void Initialize()
{
// do nothing
}
/// <summary>
/// Any initialization steps that need to be done on the UI thread
/// </summary>
public virtual Task Startup()
{
MvxLogHost.Default?.Log(LogLevel.Trace, "AppStart: Application Startup - On UI thread");
return Task.CompletedTask;
}
/// <summary>
/// If the application is restarted (eg primary activity on Android
/// can be restarted) this method will be called before Startup
/// is called again
/// </summary>
public virtual void Reset()
{
// do nothing
}
public IMvxViewModelLocator FindViewModelLocator(MvxViewModelRequest request)
{
return DefaultLocator;
}
protected void RegisterCustomAppStart<TMvxAppStart>()
where TMvxAppStart : class, IMvxAppStart
{
Mvx.IoCProvider.ConstructAndRegisterSingleton<IMvxAppStart, TMvxAppStart>();
}
protected void RegisterAppStart<TViewModel>()
where TViewModel : IMvxViewModel
{
Mvx.IoCProvider.ConstructAndRegisterSingleton<IMvxAppStart, MvxAppStart<TViewModel>>();
}
protected void RegisterAppStart(IMvxAppStart appStart)
{
Mvx.IoCProvider.RegisterSingleton(appStart);
}
protected virtual void RegisterAppStart<TViewModel, TParameter>()
where TViewModel : IMvxViewModel<TParameter> where TParameter : class
{
Mvx.IoCProvider.ConstructAndRegisterSingleton<IMvxAppStart, MvxAppStart<TViewModel, TParameter>>();
}
protected IEnumerable<Type> CreatableTypes()
{
return CreatableTypes(GetType().GetTypeInfo().Assembly);
}
protected IEnumerable<Type> CreatableTypes(Assembly assembly)
{
return assembly.CreatableTypes();
}
}
public class MvxApplication<TParameter> : MvxApplication, IMvxApplication<TParameter>
{
public virtual Task<TParameter> Startup(TParameter hint)
{
return Task.FromResult(hint);
}
}
#nullable restore
}