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Diffstat (limited to 'ext/tk/sample/demos-en/browse2')
-rw-r--r-- | ext/tk/sample/demos-en/browse2 | 82 |
1 files changed, 82 insertions, 0 deletions
diff --git a/ext/tk/sample/demos-en/browse2 b/ext/tk/sample/demos-en/browse2 new file mode 100644 index 0000000000..304a5f547e --- /dev/null +++ b/ext/tk/sample/demos-en/browse2 @@ -0,0 +1,82 @@ +#!/usr/bin/env ruby + +# browse -- +# This script generates a directory browser, which lists the working +# directory and allow you to open files or subdirectories by +# double-clicking. + +require 'tk' + +class Browse + BROWSE_WIN_COUNTER = TkVariable.new(0) + + def initialize(dir) + BROWSE_WIN_COUNTER.value = BROWSE_WIN_COUNTER.to_i + 1 + + # create base frame + base = TkToplevel.new { + minsize(1,1) + title('Browse : ' + dir) + } + + # Create a scrollbar on the right side of the main window and a listbox + # on the left side. + list = TkListbox.new(base, 'relief'=>'sunken', + 'width'=>20, 'height'=>20, 'setgrid'=>'yes') {|l| + TkScrollbar.new(base, 'command'=>proc{|*args| l.yview *args}) {|s| + pack('side'=>'right', 'fill'=>'y') + l.yscrollcommand(proc{|first,last| s.set(first,last)}) + } + + pack('side'=>'left', 'fill'=>'both', 'expand'=>'yes') + + # Fill the listbox with a list of all the files in the directory (run + # the "ls" command to get that information). + open("|ls -a #{dir}", 'r'){|fid| fid.readlines}.each{|fname| + l.insert('end', fname.chomp) + } + + } + + # Set up bindings for the browser. + base.bind('Control-c', + proc{ + base.destroy + Browse::BROWSE_WIN_COUNTER.value = \ + Browse::BROWSE_WIN_COUNTER.to_i - 1}) + list.bind('Double-Button-1', + proc{TkSelection.get.each{|f| self.browse dir, f}}) + end + + # The method below is invoked to open a browser on a given file; if the + # file is a directory then another instance of this program is invoked; if + # the file is a regular file then the Mx editor is invoked to display + # the file. + def browse (dir, file) + file = dir + File::Separator + file if dir != '.' + type = File.ftype(file) + if type == 'directory' + Browse.new(file) + else + if type == 'file' + if ENV['EDITOR'] + system(ENV['EDITOR'] + ' ' + file + ' &') + else + system('xedit ' + file + ' &') + end + else + STDOUT.print "\"#{file}\" isn't a directory or regular file" + end + end + end + +end + +Browse.new(ARGV[0] ? ARGV[0] : '.') + +TkRoot.new { + withdraw + Browse::BROWSE_WIN_COUNTER.trace('w', proc{exit if Browse::BROWSE_WIN_COUNTER.to_i == 0}) +} + +Tk.mainloop |