ViewModel <-> View mapping feature

I would like to be able to tell Stylet which View should be created for which ViewModel.

I have a specific use-case where I would like to create multiple VMs but have them all use a single View.

I understand this could be done by subclassing the ViewManager. However, having a simple dictionary that can tell Stylet to create MyView for both MyViewModel and MyOtherViewModel would be a nice feature.

EDIT: Someone pointed this from samples, which seems to be what I need, but I don’t know how I would use that?

EDIT 2: I see the Attribute in there but there’s a couple of issues with it

1. You have to apply it to a View (rather than a ViewModel)
2. AllowMultiple = false suggests that only 1 ViewModel can be mapped to a single View

Wouldn’t it be better if this attribute was applied to VMs, specifying the View that goes with them?

[canton7]

Yes, you could do exactly that, although it’s mapping from ViewModel -> View of course, not ViewModel -> ViewModel (I’d use TryGetValue instead of doing two lookups, but the result is the same). You’ll need the fully-qualified names (including namespace).

NamespaceTransformations are only for transforming namespaces – they map e.g. SomeLibrary.SomeViewModel to SomeApplication.SomeView. You can see that they match the start of the ViewModel’s type name, and end at a .. This can be needed for the convention-based mapping that Stylet does out of the box.

[vgist1]

@canton7 excuse my ignorance are you saying I could technically do something like this:

public class MyViewManager : ViewManager
{
    public Dictionary<string, string> Map { get; set; }
    
    protected override string ViewTypeNameForModelTypeName(string modelTypeName)
    {
        if (Map.ContainsKey(modelTypeName))
        {
            return base.ViewTypeNameForModelTypeName(Map[modelTypeName]);
        }
        return base.ViewTypeNameForModelTypeName(modelTypeName);
    }
}

Where map would be say

Map = new Dictionary<string, string>
{
    { "CustomerReportViewModel", "ReportViewModel" },
    { "CompanyReportViewModel", "ReportViewModel" },
    { "AccountReportViewModel", "ReportViewModel" },
};

Is that not what this technically does if I understood it right? https://github.com/canton7/Stylet/blob/master/Stylet/ViewManager.cs#L107