Class: Microkit::Group

Inherits:
Object
  • Object
show all
Defined in:
lib/microkit/group.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(type, values) ⇒ Group

Returns a new instance of Group.



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# File 'lib/microkit/group.rb', line 6

def initialize(type, values)
     if !['config', 'features'].include? type then 
        raise Error('Group type is not valid')
     end
     @change = Publisher.new
     @group = {}
     @type = type
     @updated = false
     @initialized = false
     self.update(values)
end

Instance Attribute Details

#change ⇒ Object (readonly)

Returns the value of attribute change.



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# File 'lib/microkit/group.rb', line 5

def change
  @change
end

Instance Method Details

#update(values) ⇒ Object 



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# File 'lib/microkit/group.rb', line 18

def update (values)
  prev_value = self.value
  values.each do |key, item|
      if @group.key?(key) then
          @group[key].update(item)
      else
          if @initialized then
              @updated = true
          end
          if item.key?("value") and item["value"].class != Hash then
            if @type == "config" then
              @group[key] = ConfigItem.new(item, key)
            elsif @type == "features" then
              @group[key] = FeatureItem.new(item, key)
            end
            published = Proc.new do |current_val, prev_val|
              @updated = true
            end
            
            @group[key].change.subscribe(published)
          else
              @group[key] =  Group.new(@type, item)
              published = Proc.new do |current_val, prev_val|
                @updated = true
              end
              @group[key].change.subscribe(published)
          end
      end
      var_name = "@#{key}"  # the '@' is required
      self.instance_variable_set(var_name, @group[key])
      self.class.module_eval { attr_accessor key}
      
  end
  if !@initialized then
      @initialized = true 
  end
  if @updated then
      @change.publish(self.value ,prev_value)
      @updated = false 
  end  
end

#value ⇒ Object 



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# File 'lib/microkit/group.rb', line 59

def value
  @group.reduce({}) {|a, (key, item)| a[key] = item.value; return a}
end