Module: Btk

Included in:
Gtk::Widget
Defined in:
lib/btk.rb

Class Method Summary collapse

Instance Method Summary collapse

Dynamic Method Handling

This class handles dynamic methods through the method_missing method

#method_missing(name, *argv, &block) ⇒ Object 



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# File 'lib/btk.rb', line 54

def method_missing(name,*argv,&block)
  if name.to_s =~ /^sig_(.*)$/
    return self.signal_connect($1,&block)
  else
    ob=eval("Btk.#{name}(*argv,&block)")
    if self.respond_to? 'pack_start'
      opts=Array(Btk.get_options(argv)[:pack])
      default_opts=[true,true,0]
      opts.each_index{|idx|
        default_opts[idx]=opts[idx] unless opts[idx].nil?
      }
      opts=default_opts
      self.pack_start(ob,opts[0],opts[1],opts[2])
    elsif self.respond_to? 'add'
      self.add(ob)
    end
    return ob
  end
end

Class Method Details

.get_options(argv) ⇒ Object 



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# File 'lib/btk.rb', line 8

def self.get_options(argv)
  options={}
  if argv.last.is_a? Hash
    options=argv.pop
  end
  options
end

.method_missing(name, *argv, &block) ⇒ Object 



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# File 'lib/btk.rb', line 16

def self.method_missing(name,*argv,&block)
  real_name=nil
  [Gtk,Object].each{|t|
    if t.const_defined?(name.to_sym)
      real_name="#{t.name}::#{name}"
    end
  }
  raise "undefined class #{name}" unless real_name
  name=real_name
  options=get_options(argv)

  #create object
  ob=eval("#{name}.new(#{parse_params(:argv,argv)})")

  #parse options
  options.each{|key,value|
    #ignore :pack
    next if key==:pack
    ob_method=nil

    #two methods supported
    methods=["#{key}=".to_s,"set_#{key}".to_s]
    methods.each{|method|
      if ob.respond_to?(method)
        ob_method=method
        break
      end
    }
    ob_method or raise "cannot find method in #{methods.join(',')}"
    value=Array(value)
    eval("ob.send(ob_method,#{parse_params(:value,value)})")
  }
  if block_given?
    yield(ob)
  end
  ob
end

.parse_params(name, argv) ⇒ Object 



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# File 'lib/btk.rb', line 4

def self.parse_params(name,argv)
  (0..Array(argv).size-1).collect{|idx| "#{name}[#{idx}]"}.join(',')
end