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4c3328f547
* (bug fix) some widget demos * support <TkVariable object> == <Symbol> ( "coerce TkVariable" add to the TODO list :-) ) * freeze some object for security reason git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@4282 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
82 lines
2.2 KiB
Ruby
82 lines
2.2 KiB
Ruby
#!/usr/bin/env ruby
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# browse --
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# This script generates a directory browser, which lists the working
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# directory and allow you to open files or subdirectories by
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# double-clicking.
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require 'tk'
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class Browse
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BROWSE_WIN_COUNTER = TkVariable.new(0)
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def initialize(dir)
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BROWSE_WIN_COUNTER.value = BROWSE_WIN_COUNTER.to_i + 1
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# create base frame
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base = TkToplevel.new {
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minsize(1,1)
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title('Browse : ' + dir)
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}
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# Create a scrollbar on the right side of the main window and a listbox
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# on the left side.
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list = TkListbox.new(base, 'relief'=>'sunken',
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'width'=>20, 'height'=>20, 'setgrid'=>'yes') {|l|
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TkScrollbar.new(base, 'command'=>proc{|*args| l.yview *args}) {|s|
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pack('side'=>'right', 'fill'=>'y')
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l.yscrollcommand(proc{|first,last| s.set(first,last)})
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}
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pack('side'=>'left', 'fill'=>'both', 'expand'=>'yes')
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# Fill the listbox with a list of all the files in the directory (run
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# the "ls" command to get that information).
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open("|ls -a #{dir}", 'r'){|fid| fid.readlines}.each{|fname|
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l.insert('end', fname.chomp)
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}
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}
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# Set up bindings for the browser.
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base.bind('Control-c',
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proc{
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base.destroy
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Browse::BROWSE_WIN_COUNTER.value = \
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Browse::BROWSE_WIN_COUNTER.to_i - 1})
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list.bind('Double-Button-1',
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proc{TkSelection.get.each{|f| self.browse dir, f}})
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end
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# The method below is invoked to open a browser on a given file; if the
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# file is a directory then another instance of this program is invoked; if
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# the file is a regular file then the Mx editor is invoked to display
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# the file.
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def browse (dir, file)
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file = dir + File::Separator + file if dir != '.'
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type = File.ftype(file)
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if type == 'directory'
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Browse.new(file)
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else
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if type == 'file'
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if ENV['EDITOR']
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system(ENV['EDITOR'] + ' ' + file + ' &')
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else
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system('xedit ' + file + ' &')
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end
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else
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STDOUT.print "\"#{file}\" isn't a directory or regular file"
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end
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end
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end
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end
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Browse.new(ARGV[0] ? ARGV[0] : '.')
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TkRoot.new {
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withdraw
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Browse::BROWSE_WIN_COUNTER.trace('w', proc{exit if Browse::BROWSE_WIN_COUNTER.to_i == 0})
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}
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Tk.mainloop
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