lib/interactive/options.rb in interactive-0.2.0 vs lib/interactive/options.rb in interactive-0.3.0

@@ -1,24 +1,29 @@
 require 'delegate'
+require 'interactive'
 
 module Interactive
-  class Options < SimpleDelegator
-    include Interactive
-    attr_accessor :options
+  module_function
+  def Options(options=[])
+    options.empty? ? EmptyOptions.new([]) : NonEmptyOptions.new(options)
+  end
 
+  class NonEmptyOptions < SimpleDelegator
+    include Interactive
     def initialize(options)
-      flatten_ranges(options)
+      @options = options
+      flatten_ranges(@options)
       wrap_each_option
       super(@options)
     end
 
     def shortcuts_string
       "[#{first_chars_without_last_slash(first_chars)}]"
     end
 
     def shortcuts_meanings
-      options.inject("") { |accum, opt| "#{accum}  #{opt.shortcut_value} -- #{opt.value}\n"}
+      @options.inject("") { |accum, opt| "#{accum}  #{opt.shortcut_value} -- #{opt.value}\n"}
     end
 
     def has_hash?
       @options.any? {|opt| opt.respond_to?(:to_hash) }
     end
@@ -40,13 +45,33 @@
     def wrap_each_option
       @options.map! {|option| Option(option) }
     end
 
     def first_chars
-      options.inject("") { |accum, opt| "#{accum}#{ opt.shortcut_value}/" }
+      @options.inject("") { |accum, opt| "#{accum}#{ opt.shortcut_value}/" }
     end
 
     def first_chars_without_last_slash(first_chars)
       first_chars[0..first_chars.length-2]
+    end
+  end
+
+
+  class EmptyOptions < SimpleDelegator
+    def initialize(options)
+      @options = options
+      super(@options)
+    end
+
+    def shortcuts_string
+      ''
+    end
+
+    def shortcuts_meanings
+      ''
+    end
+
+    def has_hash?
+      false
     end
   end
 end