Rework handling of unknown kwargs in datatype classes

kwargs may now be handled after the constructor is called, this
is needed to fix a bug with specifying the first axis args as
xaxis1 (rather than xaxis).

codegen/datatypes.py

@@ -190,7 +190,7 @@ def __init__(self""")
     add_docstring(buffer, node, header=header)
 
     buffer.write(f"""
-        super().__init__('{node.name_property}', **kwargs)
+        super().__init__('{node.name_property}')
 
         # Import validators
         # -----------------
@@ -227,6 +227,13 @@ def __init__(self""")
             buffer.write(f"""
         self._props['{lit_name}'] = '{lit_val}'""")
 
+    buffer.write(f"""
+    
+        # Process unknown kwargs
+        # ----------------------
+        self._process_kwargs(**kwargs)    
+    """)
+
     # Return source string
     # --------------------
     return buffer.getvalue()

plotly/basedatatypes.py

@@ -2063,7 +2063,7 @@ def __init__(self, plotly_name, **kwargs):
         """
         # Validate inputs
         # ---------------
-        self._raise_on_invalid_property_error(*kwargs.keys())
+        self._process_kwargs(**kwargs)
 
         # Store params
         # ------------
@@ -2107,6 +2107,12 @@ def __init__(self, plotly_name, **kwargs):
         # type: Dict[Tuple[Tuple[Union[str, int]]], List[Callable]]
         self._change_callbacks = {}
 
+    def _process_kwargs(self, **kwargs):
+        """
+        Process any extra kwargs that are not predefined as constructor params
+        """
+        self._raise_on_invalid_property_error(*kwargs.keys())
+
     @property
     def plotly_name(self):
         """
@@ -3145,26 +3151,38 @@ def __init__(self, plotly_name, **kwargs):
         # ---------------
         assert plotly_name == 'layout'
 
-        # Compute invalid kwargs
-        # ----------------------
-        # Pass to parent for error handling
-        invalid_kwargs = {
-            k: v
-            for k, v in kwargs.items()
-            if not self._subplotid_prop_re.fullmatch(k)
-        }
-        super().__init__(plotly_name, **invalid_kwargs)
+        # Call superclass constructor
+        # ---------------------------
+        super().__init__(plotly_name)
 
         # Initialize _subplotid_props
         # ---------------------------
         # This is a set storing the names of the layout's dynamic subplot
         # properties
         self._subplotid_props = set()
 
-        # Process subplot properties
-        # --------------------------
-        # The remaining kwargs are valid subplot properties
-        for prop, value in kwargs.items():
+        # Process kwargs
+        # --------------
+        self._process_kwargs(**kwargs)
+
+    def _process_kwargs(self, **kwargs):
+        """
+        Process any extra kwargs that are not predefined as constructor params
+        """
+        unknown_kwargs = {
+            k: v
+            for k, v in kwargs.items()
+            if not self._subplotid_prop_re.fullmatch(k)
+        }
+        super()._process_kwargs(**unknown_kwargs)
+
+        subplot_kwargs = {
+            k: v
+            for k, v in kwargs.items()
+            if self._subplotid_prop_re.fullmatch(k)
+        }
+
+        for prop, value in subplot_kwargs.items():
             self._set_subplotid_prop(prop, value)
 
     def _set_subplotid_prop(self, prop, value):