lib/configurable/delegate.rb in configurable-0.1.0 vs lib/configurable/delegate.rb in configurable-0.3.0

@@ -20,13 +20,13 @@
     attr_reader :reader
 
     # The writer method, by default key=
     attr_reader :writer
 
-    # An array of metadata for self, used to present the 
+    # An hash of metadata for self, used to present the 
     # delegate in different contexts (ex on the command
-    # line or web).
+    # line, in a web form, or a desktop app).
     attr_reader :attributes
 
     # Initializes a new Delegate with the specified key 
     # and default value.
     def initialize(reader, writer="#{reader}=", default=nil, attributes={})
@@ -34,10 +34,21 @@
       self.reader = reader
       self.writer = writer
   
       @attributes = attributes
     end
+    
+    # Sets the value of an attribute.
+    def []=(key, value)
+      attributes[key] = value
+    end
+    
+    # Returns the value for the specified attribute, or
+    # default, if the attribute is unspecified.
+    def [](key, default=nil)
+      attributes.has_key?(key) ? attributes[key] : default
+    end
 
     # Sets the default value for self.
     def default=(value)
       @duplicable = Delegate.duplicable_value?(value)
       @default = value.freeze
@@ -58,9 +69,14 @@
 
     # Sets the writer for self.  The writer is symbolized,
     # but may also be set to nil.
     def writer=(value)
       @writer = value == nil ? value : value.to_sym
+    end
+    
+    # Returns true if the default value is a kind of DelegateHash.
+    def is_nest?
+      @default.kind_of?(DelegateHash)
     end
 
     # True if another is a kind of Delegate with the same
     # reader, writer, and default value.  Attributes are
     # not considered.
\ No newline at end of file