public override bool CanView(IRValueInfo value)
{
// We can only view collections that have elements.
var length = value?.Length ?? 0;
if (length == 0)
{
return(false);
}
// We can only view atomic vectors or lists.
// Note that data.frame is always a list, and matrix and array can be either vector or list.
if (!value.IsAtomic() && value.TypeName != "list")
{
return(false);
}
// We can only view dimensionless (treated as 1D), 1D, or 2D collections.
// For 1D collections, only view if there's more than one element (for 2D, we still want
// to enable grid in that case to expose row & column names).
var dimCount = value.Dim?.Count ?? 1;
if (dimCount > 2 || (dimCount == 1 && length == 1))
{
return(false);
}
return(true);
}
public override bool CanView(IRValueInfo value)
{
// We can only view collections that have elements.
var length = value?.Length ?? 0;
if (length == 0)
{
return(false);
}
// We can only view atomic vectors or lists.
// Note that data.frame is always a list, and matrix and array can be either vector or list.
if (!value.IsAtomic() && value.TypeName != "list")
{
return(false);
}
// We can only view dimensionless (treated as 1D), 1D, or 2D collections.
// For 1D collections, only view if there's more than one element (for 2D, we still want
// to enable grid in that case to expose row & column names).
var dimCount = value.Dim?.Count ?? 1;
if (dimCount > 2 || (dimCount == 1 && length == 1))
{
return(false);
}
// Grid viewer allocates arrays of doubles of the size of each dimension, to precompute cell coordinates.
// If a given dimension is too large, the corresponding array can easily OOM on allocation. So, restrict
// dimensions to reasonable sizes.
foreach (var dim in value.Dim ?? new[] { length })
{
if (dim > MaxDim)
{
return(false);
}
}
return(true);
}
