public static IMvxViewModel ReflectionGetViewModel(this IMvxView view)
{
if (view == null)
{
return(null);
}
#if NETFX_CORE
var propertyInfo = view.GetType().GetTypeInfo().RecursiveGetDeclaredProperty("ViewModel");
if (propertyInfo == null)
{
return(null);
}
return((IMvxViewModel)propertyInfo.GetValue(view, new object[] { }));
#else
var propertyInfo = view.GetType().GetProperty("ViewModel");
if (propertyInfo == null)
{
return(null);
}
return((IMvxViewModel)propertyInfo.GetGetMethod().Invoke(view, new object[] {}));
#endif
}
internal static Type GetViewModelType(this IMvxView view)
{
var viewType = view.GetType();
var props = viewType.GetProperties(BindingFlags.Public | BindingFlags.Instance);
var prop = props.Where(p => p.Name == "ViewModel").FirstOrDefault();
return(prop?.PropertyType);
}
public static IMvxViewModel ReflectionGetViewModel(this IMvxView view)
{
if (view == null)
{
return(null);
}
var propertyInfo = view.GetType().GetProperty("ViewModel");
if (propertyInfo == null)
{
return(null);
}
return((IMvxViewModel)propertyInfo.GetGetMethod().Invoke(view, new object[] {}));
}
public static Type FindAssociatedViewModelTypeOrNull(this IMvxView view)
{
if (view == null)
{
return(null);
}
IMvxViewModelTypeFinder associatedTypeFinder;
if (!Mvx.TryResolve(out associatedTypeFinder))
{
MvxTrace.Trace(
"No view model type finder available - assuming we are looking for a splash screen - returning null");
return(typeof(MvxNullViewModel));
}
return(associatedTypeFinder.FindTypeOrNull(view.GetType()));
}
public static Type?FindAssociatedViewModelTypeOrNull(this IMvxView view)
{
if (view == null)
{
throw new ArgumentNullException(nameof(view));
}
IMvxViewModelTypeFinder associatedTypeFinder;
if (!Mvx.IoCProvider.TryResolve(out associatedTypeFinder))
{
MvxLogHost.Default?.Log(LogLevel.Trace,
"No view model type finder available - assuming we are looking for a splash screen - returning null");
return(typeof(MvxNullViewModel));
}
return(associatedTypeFinder.FindTypeOrNull(view.GetType()));
}
private static IMvxViewModel LoadViewModel(IMvxView androidView)
{
var viewModelType = androidView.GetType()
.GetProperties()
.Where(p => p.Name == nameof(androidView.ViewModel))
.First(vmp => vmp.PropertyType != typeof(IMvxViewModel))
.PropertyType;
var request = new MvxViewModelRequest(viewModelType);
var loader = Mvx.Resolve <IMvxViewModelLoader>();
var viewModel = loader.LoadViewModel(request, null);
if (viewModel == null)
{
Mvx.Resolve <IMvxLog>().Warn("ViewModel not loaded for {0}", request.ViewModelType.FullName);
}
return(viewModel);
}
public static void OnViewCreate(this IMvxView view, Func <IMvxViewModel> viewModelLoader)
{
// note - we check the DataContent before the ViewModel to avoid casting errors
// in the case of 'simple' binding code
if (view.DataContext != null)
{
return;
}
if (view.ViewModel != null)
{
return;
}
var viewModel = viewModelLoader();
if (viewModel == null)
{
MvxTrace.Warning("ViewModel not loaded for view {0}", view.GetType().Name);
return;
}
view.ViewModel = viewModel;
}
public static async ValueTask OnViewCreate(this IMvxView view, Func <ValueTask <IMvxViewModel?> > viewModelLoader)
{
// note - we check the DataContent before the ViewModel to avoid casting errors
// in the case of 'simple' binding code
if (view.DataContext != null)
{
return;
}
if (view.ViewModel != null)
{
return;
}
var viewModel = await viewModelLoader().ConfigureAwait(false);
if (viewModel == null)
{
MvxLog.Instance.Warn("ViewModel not loaded for view {0}", view.GetType().Name);
return;
}
view.ViewModel = viewModel;
}
public static IMvxViewModel ReflectionGetViewModel(this IMvxView view)
{
var propertyInfo = view?.GetType().GetProperty("ViewModel");
return((IMvxViewModel)propertyInfo?.GetGetMethod().Invoke(view, new object[] { }));
}
public static IMvxViewModel?ReflectionGetViewModel(this IMvxView view)
{
var propertyInfo = view?.GetType().GetProperty("ViewModel");
return(propertyInfo?.GetGetMethod().Invoke(view, Array.Empty <object>()) as IMvxViewModel);
}