From d5a54125f7d0ddfabebd547c00043b30e431fc3f Mon Sep 17 00:00:00 2001
From: mcflugen <mcflugen@gmail.com>
Date: Thu, 1 Apr 2021 22:46:23 -0600
Subject: [PATCH] add ListParameter

---
 model_metadata/model_parameter.py | 23 +++++++++++++++++++++++
 1 file changed, 23 insertions(+)

diff --git a/model_metadata/model_parameter.py b/model_metadata/model_parameter.py
index 897ef50..8d1b2f3 100644
--- a/model_metadata/model_parameter.py
+++ b/model_metadata/model_parameter.py
@@ -208,6 +208,8 @@ def parameter_from_dict(d):
         return FileParameter(value, **kwds)
     elif dtype in ("bool", "boolean"):
         return BooleanParameter(value, **kwds)
+    elif dtype in ("list",):
+        return ListParameter(value, **kwds)
     else:
         raise ValueError("{dtype}: unknown parameter type".format(dtype=dtype))
 
@@ -266,6 +268,23 @@ def value(self):
         return self._value
 
 
+class ListParameter(ModelParameterMixIn):
+
+    _dtype = "list"
+
+    def __init__(self, value, **kwds):
+        self._value = list(value)
+        self._desc = kwds.get("desc", None)
+
+    @property
+    def desc(self):
+        return self._desc
+
+    @property
+    def value(self):
+        return self._value
+
+
 class NumberParameter(StringParameter, ModelParameterMixIn):
 
     _kwds = ("units", "range")
@@ -425,6 +444,8 @@ def dtype_str(self):
             return "float"
         elif self.dtype is str:
             return "str"
+        elif self.dtype is list:
+            return "list"
         else:
             return self.dtype
 
@@ -459,6 +480,8 @@ def norm(param):
             dtype = float
         elif dtype in ("str", "string", "file", "choice"):
             dtype = str
+        elif dtype in ("list",):
+            dtype = list
 
         if isinstance(range, dict):
             range = (range["min"], range["max"])