Fix for enthought#302 part 2

Make sure ignore, first, last are propagated to nested set() calls

apptools/persistence/state_pickler.py

@@ -694,7 +694,31 @@ class StateSetter:
     that when it sets the state.
     """
 
-    def __init__(self):
+    def __init__(self, ignore=None, first=None, last=None):
+        """Sets the state of the object.
+
+        Parameters
+        ----------
+
+        - ignore : `list(str)`
+
+          The list of attributes specified in this list are ignored
+          and the state of these attributes are not set (this excludes
+          the ones specified in `first` and `last`).  If one specifies
+          a '*' then all attributes are ignored except the ones
+          specified in `first` and `last`.
+
+        - first : `list(str)`
+
+          The list of attributes specified in this list are set first (in
+          order), before any other attributes are set.
+
+        - last : `list(str)`
+
+          The list of attributes specified in this list are set last (in
+          order), after all other attributes are set.
+
+        """
         # Stores the ids of instances already done.
         self._instance_ids = []
         self.type_map = {
@@ -703,6 +727,9 @@ def __init__(self):
             StateList: self._do_list,
             StateDict: self._do_dict,
         }
+        self.ignore = ignore
+        self.first = first
+        self.last = last
 
     def set(self, obj, state, ignore=None, first=None, last=None):
         """Sets the state of the object.
@@ -757,15 +784,15 @@ def set(self, obj, state, ignore=None, first=None, last=None):
 
         self._register(obj)
 
-        # This wierdness is needed since the state's own `keys` might
+        # This weirdness is needed since the state's own `keys` might
         # be set to something else.
         state_keys = list(dict.keys(state))
         state_keys.remove("__metadata__")
 
-        if first is None:
-            first = []
-        if last is None:
-            last = []
+        # fallback to instance default
+        first = first or self.first or []
+        last = last or self.last or []
+        ignore = ignore or self.ignore or []
 
         # Remove all the ignored keys.
         if ignore:
@@ -998,7 +1025,7 @@ def get_state(obj):
 
 
 def set_state(obj, state, ignore=None, first=None, last=None):
-    StateSetter().set(obj, state, ignore, first, last)
+    StateSetter(ignore, first, last).set(obj, state, ignore, first, last)
 
 
 set_state.__doc__ = StateSetter.set.__doc__