gistfile1.txt

require 'java'

java_import java.awt.BorderLayout
java_import java.awt.Container
java_import java.awt.GridLayout
java_import java.awt.event.ActionEvent
java_import java.awt.event.ActionListener

java_import javax.swing.JButton
java_import javax.swing.JFileChooser
java_import javax.swing.JFrame
java_import javax.swing.JPanel
java_import javax.swing.JTextField

#### Could use some OO love but it should show basics of using closures
#### to define action listeners and other handy Ruby short-hand syntax
frame = JFrame.new
panel = JPanel.new
open = JButton.new "Open"
save = JButton.new "Save"
filename = JTextField.new
dir = JTextField.new

open.addActionListener do |event|
  c = JFileChooser.new
  # Demonstrate "Open" dialog:
  rVal = c.showOpenDialog frame
  if rVal == JFileChooser::APPROVE_OPTION
    filename.text = c.selected_file.name
    dir.text = c.current_directory.to_string
  end
  if rVal == JFileChooser::CANCEL_OPTION
    filename.text = "You pressed cancel"
    dir.text = ""
  end
end
panel.add open

save.addActionListener do |event|
  c = JFileChooser.new
  # Demonstrate "Save" dialog:
  rVal = c.showSaveDialog frame
  if rVal == JFileChooser::APPROVE_OPTION
    filename.text = c.selected_file.name
    dir.text = c.current_directory.to_string
  end
  if rVal == JFileChooser::CANCEL_OPTION
    filename.text = "You pressed cancel"
    dir.text = ""
  end
end
panel.add save

cp = frame.content_pane
cp.add panel, BorderLayout::SOUTH
dir.editable = false
filename.editable = false
button_panel = JPanel.new
button_panel.layout = GridLayout.new(2, 1)
button_panel.add filename
button_panel.add dir
cp.add button_panel, BorderLayout::NORTH


frame.default_close_operation = JFrame::EXIT_ON_CLOSE
frame.set_size 250, 110
frame.visible = true