Class: Media::Filter

Inherits:
Object
  • Object
show all
Defined in:
lib/media/filter.rb,
lib/media/filter/chain.rb,
lib/media/filter/graph.rb,
lib/media/filter/argument.rb

Defined Under Namespace

Classes: Argument, Chain, Graph

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(args, &block) ⇒ Filter

Returns a new instance of Filter.



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# File 'lib/media/filter.rb', line 10

def initialize(args, &block)
  @name        = args.fetch(:name)
  @expressions = Array args.fetch(:expressions, [])
  @arguments   = Array args.fetch(:arguments, [])
  @inputs      = Array args.fetch(:inputs, [])
  @outputs     = Array args.fetch(:outputs, [])
  
  block.arity < 1 ? instance_eval(&block) : block.call(self) if block_given?
end

Instance Attribute Details

#name ⇒ Object (readonly)

Returns the value of attribute name.



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# File 'lib/media/filter.rb', line 8

def name
  @name
end

Instance Method Details

#arguments(value = nil) ⇒ Object Also known as: arguments= 



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# File 'lib/media/filter.rb', line 38

def arguments(value=nil)
  return @arguments unless value
  
  @arguments = value.map {|k,v| Argument.new(key: k, value: v)}
end

#expressions(*value) ⇒ Object Also known as: expressions= 



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# File 'lib/media/filter.rb', line 45

def expressions(*value)
  return @expressions if value.empty?
  
  @expressions = value
end

#inputs(*value) ⇒ Object Also known as: inputs= 



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# File 'lib/media/filter.rb', line 24

def inputs(*value)
  return @inputs if value.empty?
    
  @inputs = value.map {|name| Helper::Label.new(name: name)}
end

#outputs(*value) ⇒ Object Also known as: outputs= 



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# File 'lib/media/filter.rb', line 31

def outputs(*value)
  return @outputs if value.empty?
  
  @outputs = value.map {|name| Helper::Label.new(name: name)}
end

#to_s ⇒ Object 



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# File 'lib/media/filter.rb', line 20

def to_s      
  [inputs, filter, outputs].reject(&:empty?).join(' ')
end