Glade DSL

Readme.md

Run test_glade.rb
Run basic.rb

basic.rb

require 'gtk3'

class MyApp
  
  def initialize (glade_path)
    @builder = Gtk::Builder.new
    @builder.add_from_file(glade_path)
    @builder.connect_signals { |handler| method (handler) }
    @main_window = @builder.get_object('window1')
  end

  def run
    @main_window.show
    Gtk.main
  end

  # signal handler for main window destory event
  def quit
    Gtk.main_quit
  end

end

MyApp.new('glade.glade').run

test_glade.rb

require './xmldsl'

xml = XML.generate do
	interface do
		requires lib: "gtk+", version:"3.12"
		object class: "GtkWindow", id: "window1" do
		    property name:"can_focus" do
			content ["False"]
		    end
		    child do
		      placeholder
		    end
		end
	end
end

open('glade.glade', 'w') {|f| f.puts xml}
puts xml

xmldsl.rb

# DSL to generate XML from Ruby
# Fork of https://gist.github.com/kimjoar/2773597
class XML
  def self.generate &block
    XML.new.xml_generate &block
  end

  def xml_generate &block
    instance_eval(&block).join
  end

  def xml
    @xml or @xml = ["<?xml version=\"1.0\" encoding=\"UTF-8\"?> \n"]
  end

  def method_missing name, args = {}    
    xml << "#{indent}<#{name} #{attributes(args)}"
    if block_given?
      xml << ">\n"
      indent do
        yield
      end
      xml << "#{indent}</#{name}>\n"
    else
      xml << "/>\n"
    end
  end

  def indent
    @indent or @indent = 0

    if block_given?
      @indent += 3
      yield
      @indent -= 3
    else
      " "*@indent
    end
  end

  def attributes args
    args.map { |key, value| "#{key}='#{value}'"}.join(" ")
  end

  def content txt
    xml << "#{indent}#{[txt].join}\n"
  end
end