Contents

module React
  
  class Observable

    def initialize(value, on_change = nil, &block)
      @value = value
      @on_change = on_change || block
    end

    def method_missing(method_sym, *args, &block)
      @value.send(method_sym, *args, &block).tap { |result| @on_change.call result }
    end

    def respond_to?(method, *args)
      if [:call, :to_proc].include? method
        true
      else
        @value.respond_to? method, *args
      end
    end
  
    def call(new_value)
      @on_change.call new_value
      @value = new_value
    end
    
    def to_proc
      lambda { |arg = @value| @on_change.call arg }
    end
  
  end
  
end

Version data entries

21 entries across 21 versions & 1 rubygems

Version	Path
reactive-ruby-0.7.24	lib/reactive-ruby/observable.rb
reactive-ruby-0.7.23	lib/reactive-ruby/observable.rb
reactive-ruby-0.7.22	lib/reactive-ruby/observable.rb
reactive-ruby-0.7.21	lib/reactive-ruby/observable.rb
reactive-ruby-0.7.20	lib/reactive-ruby/observable.rb
reactive-ruby-0.7.19	lib/reactive-ruby/observable.rb
reactive-ruby-0.7.18	lib/reactive-ruby/observable.rb
reactive-ruby-0.7.17	lib/reactive-ruby/observable.rb
reactive-ruby-0.7.16	lib/reactive-ruby/observable.rb
reactive-ruby-0.7.15	lib/reactive-ruby/observable.rb
reactive-ruby-0.7.14	lib/reactive-ruby/observable.rb
reactive-ruby-0.7.13	lib/reactive-ruby/observable.rb
reactive-ruby-0.7.12	lib/reactive-ruby/observable.rb
reactive-ruby-0.7.11	lib/reactive-ruby/observable.rb
reactive-ruby-0.7.10	lib/reactive-ruby/observable.rb
reactive-ruby-0.7.8	lib/reactive-ruby/observable.rb
reactive-ruby-0.7.7	lib/reactive-ruby/observable.rb
reactive-ruby-0.7.6	lib/reactive-ruby/observable.rb
reactive-ruby-0.7.5	lib/reactive-ruby/observable.rb
reactive-ruby-0.7.4	lib/reactive-ruby/observable.rb