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# frozen_string_literal: false
#
# menubar sample 3 : vertical layout menubar; use frame and menubuttons
#
require 'tk'
radio_var = TkVariable.new('y')
menu_spec = [
[['&File', true], # when underline option is true, '&' index is the position
{: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'], /[XYZ]/, '', {:foreground=>'black'}],
['Radio_Y', [radio_var, 'y'], /[XYZ]/],
['Radio_Z', [radio_var, 'z'], /[XYZ]/], # use Regexp for underline position
'---',
['cascade', [
['sss', proc{p 'sss'}, 0],
['ttt', proc{p 'ttt'}, 0],
['uuu', proc{p 'uuu'}, 0],
['vvv', proc{p 'vvv'}, 0],
],
0, '',
{:font=>'Courier 16 italic',
:menu_config=>{:font=>'Times -18 bold', :foreground=>'black'}}],
'---',
['Quit', proc{exit}, 0]],
[['Edit', 0],
['Cut', proc{puts('Cut clicked')}, 2],
['Copy', proc{puts('Copy clicked')}, 0],
['Paste', proc{puts('Paste clicked')}, 0]],
[['Help', 0, {:menu_name=>'help'}],
['About This', proc{puts('Ruby/Tk menubar sample 3')}, "This"]]
# use string index for underline position
]
layout_proc = 'vertical'
# The following procedure is same to 'layout_proc'=>'vertical'
=begin
layout_proc = proc{|parent, mbtn|
mbtn.direction :right
mbtn.pack(:side=>:top, :fill=>:x)
menu = mbtn.menu
cmd = proc{|m, dir|
Tk::Menu::TkInternalFunction.next_menu(m, dir) rescue nil
# ignore error when the internal function doesn't exist
}
menu.bind('Tab', cmd, :widget, 'forward')
menu.bind('Alt-Tab', cmd, :widget, 'backward')
}
=end
menubar = TkMenubar.new(nil, menu_spec,
'layout_proc'=>layout_proc,
'tearoff'=>false,
'foreground'=>'grey40',
'activeforeground'=>'red',
'font'=>'Helvetica 12 bold')
menubar.pack('side'=>'left', 'fill'=>'y')
TkText.new(:wrap=>'word').pack.insert('1.0', 'This sample script generates "Menu Sidebar".
If "::tk::MenuNextMenuon" function is available your Tcl/Tk library, you will be able to move to the next menu by Tab key on the posted menu, or the previous menu by Alt + Tab key.
Please read the sample source, and check how to override default configure options of menu entries on a menu_spec. Maybe, on windows, this menubar does not work properly about keyboard shortcuts. Then, please use "menu" option of root/toplevel widget (see sample/menubar3.rb).')
Tk.mainloop
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