Add visible attribute to properties. (#1)

Author: Mike Stegeman

gateway_addon/property.py

@@ -16,6 +16,10 @@ def __init__(self, device, name, description):
         self.name = name
         self.value = None
         self.description = {}
+        self.visible = True
+
+        if 'visible' in description:
+            self.visible = description['visible']
 
         fields = ['type', 'unit', 'description', 'min', 'max']
         for field in fields:
@@ -31,6 +35,7 @@ def as_dict(self):
         prop = {
             'name': self.name,
             'value': self.value,
+            'visible': self.visible,
         }
         prop.update(self.description)
         return prop
@@ -43,6 +48,10 @@ def as_property_description(self):
         """
         return self.description
 
+    def is_visible(self):
+        """Return whether or not this property is visible."""
+        return self.visible
+
     def set_cached_value(self, value):
         """
         Set the cached value of the property, making adjustments as necessary.