Class: Nuklear::DSL

Inherits:
Object
  • Object
show all
Defined in:
lib/nuklear/dsl.rb

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(ctx, &block) ⇒ DSL

Returns a new instance of DSL.



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# File 'lib/nuklear/dsl.rb', line 5

def initialize(ctx, &block)
  @ctx = ctx
  instance_eval(&block) if block_given?
end

Dynamic Method Handling

This class handles dynamic methods through the method_missing method

#method_missing(name, *args, **kw, &block) ⇒ Object 



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# File 'lib/nuklear/dsl.rb', line 24

def method_missing(name, *args, **kw, &block)
  @ctx.send(name, *args, **kw, &block)
end

Class Method Details

.prepare! ⇒ Object

Scans all descendants of Nuklear::UI::Base and defines DSL method names based on each component name. This happens once automatically at startup but if you are having trouble with a new custom UI component, then you can call this method to make sure it’s been defined.



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# File 'lib/nuklear/dsl.rb', line 36

def self.prepare!
  Nuklear::UI::Base.descendants.each do |descendant|
    define_method descendant.dsl_method_name do |*args, **kw, &block|
      add_component(descendant, *args, **kw, &block)
    end
  end
end

Instance Method Details

#add_component(klass, *args, **kw, &block) ⇒ Object 



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# File 'lib/nuklear/dsl.rb', line 10

def add_component(klass, *args, **kw, &block)
  # if klass initialize accepts a block, pass the block into that. The
  # caller must call .dsl on the result if they want a nested DSL.
  if block_given? && klass.instance_method(:initialize).parameters.last[0] == :block
    instance = klass.new(*args, **kw, &block)
    @ctx << instance
  else # assume block is for a nested DSL
    instance = klass.new(*args, **kw)
    @ctx << instance
    instance.dsl(&block) if block_given?
  end
  instance
end

#respond_to?(name) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/nuklear/dsl.rb', line 28

def respond_to?(name)
  super || @ctx.respond_to?(name)
end