protected async Task <Maybe <IModelNode> > TryAddCurrentSymbolToDiagramAsync()
{
var maybeSymbol = await RoslynWorkspaceProvider.TryGetCurrentSymbolAsync();
if (!maybeSymbol.HasValue)
{
return(Maybe <IModelNode> .Nothing);
}
var modelNode = RoslynBasedModelService.GetOrAddNode(maybeSymbol.Value);
DiagramService.AddNode(modelNode.Id);
return(Maybe.Create(modelNode));
}
public override async Task <bool> IsEnabledAsync()
{
var maybeSymbol = await RoslynWorkspaceProvider.TryGetCurrentSymbolAsync();
return(maybeSymbol.Select(RoslynBasedModelService.CanAddSymbol).Match(i => i, () => false));
}
public override async Task <bool> IsEnabledAsync() => (await RoslynWorkspaceProvider.TryGetCurrentSymbolAsync()).HasValue;