/usr/lib/ruby/2.0.0/tk/menubar.rb is in ruby2.0-tcltk 2.0.0.484-1ubuntu2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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# tk/menubar.rb
#
# Original version:
# Copyright (C) 1998 maeda shugo. All rights reserved.
# This file can be distributed under the terms of the Ruby.
# Usage:
#
# menu_spec = [
# [['File', 0],
# ['Open', proc{puts('Open clicked')}, 0],
# '---',
# ['Quit', proc{exit}, 0]],
# [['Edit', 0],
# ['Cut', proc{puts('Cut clicked')}, 2],
# ['Copy', proc{puts('Copy clicked')}, 0],
# ['Paste', proc{puts('Paste clicked')}, 0]]
# ]
# menubar = TkMenubar.new(nil, menu_spec,
# 'tearoff'=>false,
# 'foreground'=>'grey40',
# 'activeforeground'=>'red',
# 'font'=>'-adobe-helvetica-bold-r-*--12-*-iso8859-1')
# menubar.pack('side'=>'top', 'fill'=>'x')
#
#
# OR
#
#
# menubar = TkMenubar.new
# menubar.add_menu([['File', 0],
# ['Open', proc{puts('Open clicked')}, 0],
# '---',
# ['Quit', proc{exit}, 0]])
# menubar.add_menu([['Edit', 0],
# ['Cut', proc{puts('Cut clicked')}, 2],
# ['Copy', proc{puts('Copy clicked')}, 0],
# ['Paste', proc{puts('Paste clicked')}, 0]])
# menubar.configure('tearoff', false)
# menubar.configure('foreground', 'grey40')
# menubar.configure('activeforeground', 'red')
# menubar.configure('font', '-adobe-helvetica-bold-r-*--12-*-iso8859-1')
# menubar.pack('side'=>'top', 'fill'=>'x')
#
#
# OR
#
# radio_var = TkVariable.new('y')
# menu_spec = [
# [['File', 0],
# {:label=>'Open', :command=>proc{puts('Open clicked')}, :underline=>0},
# '---',
# ['Check_A', TkVariable.new(true), 6],
# {:type=>'checkbutton', :label=>'Check_B',
# :variable=>TkVariable.new, :underline=>6},
# '---',
# ['Radio_X', [radio_var, 'x'], 6],
# ['Radio_Y', [radio_var, 'y'], 6],
# ['Radio_Z', [radio_var, 'z'], 6],
# '---',
# ['cascade', [
# ['sss', proc{p 'sss'}, 0],
# ['ttt', proc{p 'ttt'}, 0],
# ['uuu', proc{p 'uuu'}, 0],
# ['vvv', proc{p 'vvv'}, 0],
# ], 0],
# '---',
# ['Quit', proc{exit}, 0]],
# [['Edit', 0],
# ['Cut', proc{puts('Cut clicked')}, 2],
# ['Copy', proc{puts('Copy clicked')}, 0],
# ['Paste', proc{puts('Paste clicked')}, 0]]
# ]
# menubar = TkMenubar.new(nil, menu_spec,
# 'tearoff'=>false,
# 'foreground'=>'grey40',
# 'activeforeground'=>'red',
# 'font'=>'Helvetia 12 bold')
# menubar.pack('side'=>'top', 'fill'=>'x')
# See tk/menuspce.rb about the format of the menu_spec
# To use add_menu, configuration must be done by calling configure after
# adding all menus by add_menu, not by the constructor arguments.
require 'tk'
require 'tk/frame'
require 'tk/composite'
require 'tk/menuspec'
class TkMenubar<Tk::Frame
include TkComposite
include TkMenuSpec
def initialize(parent = nil, spec = nil, options = {})
if parent.kind_of? Hash
options = parent
parent = nil
spec = (options.has_key?('spec'))? options.delete('spec'): nil
end
_symbolkey2str(options)
menuspec_opt = {}
TkMenuSpec::MENUSPEC_OPTKEYS.each{|key|
menuspec_opt[key] = options.delete(key) if options.has_key?(key)
}
super(parent, options)
@menus = []
spec.each{|info| add_menu(info, menuspec_opt)} if spec
options.each{|key, value| configure(key, value)} if options
end
def add_menu(menu_info, menuspec_opt={})
mbtn, menu = _create_menubutton(@frame, menu_info, menuspec_opt)
submenus = _get_cascade_menus(menu).flatten
@menus.push([mbtn, menu])
delegate('tearoff', menu, *submenus)
delegate('foreground', mbtn, menu, *submenus)
delegate('background', mbtn, menu, *submenus)
delegate('disabledforeground', mbtn, menu, *submenus)
delegate('activeforeground', mbtn, menu, *submenus)
delegate('activebackground', mbtn, menu, *submenus)
delegate('font', mbtn, menu, *submenus)
delegate('kanjifont', mbtn, menu, *submenus)
end
def [](index)
return @menus[index]
end
end
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