Split installation properties into namespaces

apps/installation/classes.py

@@ -0,0 +1,75 @@
+from django.utils.simplejson import dumps
+
+
+class PropertyNamespace(object):
+    _registry = {}
+
+    @classmethod
+    def get(cls, name):
+        return cls._registry[name]
+
+    @classmethod
+    def get_all(cls):
+        return cls._registry.values()
+
+    def __init__(self, name, label):
+        self.name = name
+        self.label = label
+        self.properties = {}
+        self.__class__._registry[name] = self
+
+    def __unicode__(self):
+        return unicode(self.label)
+
+    def __str__(self):
+        return str(self.label)
+
+    def add_property(self, *args, **kwargs):
+        prop = Property(*args, **kwargs)
+        self.properties[prop.name] = prop
+
+    def get_properties(self):
+        return self.properties.values()
+
+    @property
+    def id(self):
+        return self.name
+
+
+class Property(object):
+    _registry = {}
+
+    @classmethod
+    def get_all(cls):
+        return cls._registry.values()
+
+    @classmethod
+    def get(cls, name):
+        return cls._registry[name]
+
+    @classmethod
+    def get_reportable(cls, as_dict=False, as_json=False):
+        if as_json:
+            return dumps(cls.get_reportable(as_dict=True))
+
+        if not as_dict:
+            return [prop for prop in cls.get_all() if prop.report]
+        else:
+            result = {}
+            for prop in cls.get_all():
+                if prop.report:
+                    result[prop.name] = unicode(prop.value)
+            return result
+
+    def __init__(self, name, label, value, report=False):
+        self.name = name
+        self.label = label
+        self.value = value
+        self.report = report
+        self.__class__._registry[name] = self
+
+    def __unicode__(self):
+        return unicode(self.value)
+
+    def __str__(self):
+        return str(self.value)