public DataModelInputViewModel GetDataModelInputViewModel(Type propertyType, DataModelPropertyAttribute description, object initialValue, Action <object, bool> updateCallback)
{
lock (_registeredDataModelEditors)
{
// Prefer a VM that natively supports the type
DataModelVisualizationRegistration match = _registeredDataModelEditors.FirstOrDefault(d => d.SupportedType == propertyType);
// Fall back on a VM that supports the type through conversion
if (match == null)
{
match = _registeredDataModelEditors.FirstOrDefault(d => d.CompatibleConversionTypes.Contains(propertyType));
}
// Lastly try getting an enum VM if the provided type is an enum
if (match == null && propertyType.IsEnum)
{
match = _registeredDataModelEditors.FirstOrDefault(d => d.SupportedType == typeof(Enum));
}
if (match != null)
{
DataModelInputViewModel viewModel = InstantiateDataModelInputViewModel(match, description, initialValue);
viewModel.UpdateCallback = updateCallback;
return(viewModel);
}
return(null);
}
}
private DataModelInputViewModel InstantiateDataModelInputViewModel(DataModelVisualizationRegistration registration, DataModelPropertyAttribute description, object initialValue)
{
// The view models expecting value types shouldn't be given null, avoid that
if (registration.SupportedType.IsValueType)
{
if (initialValue == null)
{
initialValue = Activator.CreateInstance(registration.SupportedType);
}
}
// This assumes the type can be converted, that has been checked when the VM was created
if (initialValue != null && initialValue.GetType() != registration.SupportedType)
{
initialValue = Convert.ChangeType(initialValue, registration.SupportedType);
}
IParameter[] parameters = new IParameter[]
{
new ConstructorArgument("targetDescription", description),
new ConstructorArgument("initialValue", initialValue)
};
DataModelInputViewModel viewModel = (DataModelInputViewModel)registration.PluginInfo.Kernel.Get(registration.ViewModelType, parameters);
viewModel.CompatibleConversionTypes = registration.CompatibleConversionTypes;
return(viewModel);
}
private DataModelInputViewModel InstantiateDataModelInputViewModel(DataModelVisualizationRegistration registration, DataModelPropertyAttribute?description, object?initialValue)
{
// This assumes the type can be converted, that has been checked when the VM was created
if (initialValue != null && initialValue.GetType() != registration.SupportedType)
{
initialValue = Convert.ChangeType(initialValue, registration.SupportedType);
}
IParameter[] parameters =
{
new ConstructorArgument("targetDescription", description),
new ConstructorArgument("initialValue", initialValue)
};
// If this ever happens something is likely wrong with the plugin unload detection
if (registration.Plugin.Kernel == null)
{
throw new ArtemisSharedUIException("Cannot InstantiateDataModelInputViewModel for a registration by an uninitialized plugin");
}
DataModelInputViewModel viewModel = (DataModelInputViewModel)registration.Plugin.Kernel.Get(registration.ViewModelType, parameters);
viewModel.CompatibleConversionTypes = registration.CompatibleConversionTypes;
return(viewModel);
}
