Error when doing an eval

nested.rb

#!/usr/bin/ruby
puts 'Welcome to Sensible Cinema...'

require 'java'
module SensibleSwing 
 include_package 'javax.swing'
 [JButton, JFrame, JLabel, JPanel, JOptionPane,
   JFileChooser, JComboBox, JDialog] # grab these constants (http://jira.codehaus.org/browse/JRUBY-5107)
 include_package 'java.awt'
 [FlowLayout, Font]
 include_class 'java.awt.event.ActionListener'
 JFile = java.io.File
 
 class JButton
   def initialize *args
    super *args
    set_font Font.new("Tahoma", Font::PLAIN, 11)
   end
  
   def on_clicked &block
     raise unless block
     add_action_listener do |e|
       block.call
     end
     self
   end
  
 end

 class JFrame
   def close
     dispose # sigh
   end
  end
  
  class JFileChooser
    # returns nil on failure...
    def execute
      success = show_open_dialog nil
      raise "did not choose one" unless success == Java::javax::swing::JFileChooser::APPROVE_OPTION
      get_selected_file.get_absolute_path
    end
  end

end

module SensibleSwing
 class MainWindow < JFrame
   def initialize
     super
     setDefaultCloseOperation JFrame::EXIT_ON_CLOSE
     panel = JPanel.new
     panel.set_layout nil
     setSize 350,400
     add panel # why can't I just slap these down?
 
     jlabel = JLabel.new 'Welcome to Sensible Cinema'
     happy = Font.new("Tahoma", Font::PLAIN, 11)
     jlabel.setFont(happy)
     jlabel.set_bounds(44,44,136,14)
     panel.add jlabel
    
     c=JButton.new( "Save local copy of an edited DVD" )
     c.on_clicked {
      drive = get_disk_name
=begin
      fc = JFileChooser.new 
      fc.setFileSelectionMode(nil)
      fc.set_dialog_title "Please pick a DVD descriptor file"
      fc.set_current_directory(JFile.new( __dir__  + "/../zamples/scene_lists/dvds"))
      descriptor = fc.execute
      fc = JFileChooser.new 
      # TODO allow for spaces in save to file
      fc.set_dialog_title "Pick a location to save it to (like 'my_dvd')"
      fc.setCurrentDirectory(JFile.new("c:\\"))
      save_to = fc.execute
      p [drive, descriptor, save_to]
      descriptors = YAML.load_file descriptor
      bat_file = VLCProgrammer.convert_to_full_xspf(descriptors, save_to, drive)
      temp_dir = Dir.tmpdir
      temp_file = temp_dir + '/' + 'convert_it.bat'
      File.write(temp_file, bat_file)
      p 'running', temp_file
      p 'got', system(temp_file)
      JOptionPane.showMessageDialog(nil, " Done--you may now watch file #{save_to}.ps in VLC player", "Done!", JOptionPane::ERROR_MESSAGE)
      self.close
=end
     }
     c.set_bounds(44,180,200,23)
     panel.add c
    
     reload = JButton.new( "reload code" ).on_clicked {
      eval File.read(__FILE__), nil, __FILE__
      p 're-evaled it'
     }
     reload.set_bounds(44,280,200,23)
     panel.add reload # if ARGV.find{|a| a == '--test'}
    
   end
  
   def exit_and_close
    JOptionPane.showMessageDialog(nil, "exiting", "exiting", JOptionPane::ERROR_MESSAGE)
    close
    exit
   end
  
   def get_disk_name
    disks = WMI::Win32_LogicalDisk.find(:all)

    opticals = disks.select{|d| d.Description =~ /CD-ROM/}

    opticals.map!{|d| [d.Name + "\\", d.VolumeName]}
    p opticals
    p 'showing dialog'
    dialog = GetDisk.new(self, opticals)
    p 'done showing dialog'
      
    return opticals[0][0]
   end

  
 end

 class GetDisk < JDialog
   def initialize parent, options_array
     super parent, true
     
     box = JComboBox.new
     box.add_action_listener do |e|
       p 'chosen perhaps?', e, box.get_selected_index, e.get_source, get_selected_item
       #dispose if
     end
     box.add_item "Select DVD drive"
     box.add_item "halloo"
     
     add box
     pack
    end
 end
 
end

SensibleSwing::MainWindow.new.set_visible true

puts 'Please see the Sensible Cinema window'

output

C:\dev\ruby\sensible-cinema\bin\isolate>C:\installs\jruby-1.5.5\bin\jruby sensible-cinema-hit-reload-twice-then-save-copy-of-for-death-take-2
Welcome to Sensible Cinema...
Please see the Sensible Cinema window
Welcome to Sensible Cinema...
Exception in thread "AWT-EventQueue-0" sensible-cinema-hit-reload-twice-then-save-copy-of-for-death-take-2:51:in `initialize': uninitialized constant SensibleSwing::MainWindow::SensibleSwing::JFrame::EXIT_ON_CLOSE (NameError)
        from sensible-cinema-hit-reload-twice-then-save-copy-of-for-death-take-2:143:in `new'
        ...internal jruby stack elided...
        from SensibleSwing::MainWindow::SensibleSwing::MainWindow.initialize(sensible-cinema-hit-reload-twice-then-save-copy-of-for-death-take-2:143)
        from (unknown).new(sensible-cinema-hit-reload-twice-then-save-copy-of-for-death-take-2:143)
        from SensibleSwing::MainWindow.initialize(sensible-cinema-hit-reload-twice-then-save-copy-of-for-death-take-2:23)
        from Kernel.eval(sensible-cinema-hit-reload-twice-then-save-copy-of-for-death-take-2:93)
        from SensibleSwing::MainWindow.initialize(sensible-cinema-hit-reload-twice-then-save-copy-of-for-death-take-2:23)
        from Proc.call(sensible-cinema-hit-reload-twice-then-save-copy-of-for-death-take-2:23)
        from Java::JavaxSwing::JButton.on_clicked(:1)
        from (unknown).(unknown)(:1)

Anybody know if this is a bug:

https://gist.github.com/706548 (to reproduce run the code, then hit "reload code" button)

Basically it's

module S
include_package 'javax.swing'
[JButton, JFrame, JLabel, JPanel, JOptionPane,
JFileChooser, JComboBox, JDialog]

...
jframe.add JButton.new.on_clicked {
eval(File.read(FILE))
}
end

and running that block results in
uninitialized constant SensibleSwing::MainWindow::SensibleSwing::JFrame::EXIT_ON_CLOSE

like it's nested...is the nesting expected? Shouldn't it use the

Turns out this is expected. You don't pass in a binding, but I guess it still preserved the context for defining new modules, et al